The mean longitudinal magnetic field and its uses in radial-velocity surveys

Article


Rescigno, F., Mortier, A., Dumusque, X., Lakeland, B. S., Haywood, R., Piskunov, N., Nicholson, B. A., Lopez-Morales, M., Dalal, S., Cretignier, M., Klein, B., Collier Cameron, A., Ghedina, A., Gonzalez, M., Cosentino, R., Sozzetti, A. and Saar, S. H.. 2024. "The mean longitudinal magnetic field and its uses in radial-velocity surveys." Monthly Notices of the Royal Astronomical Society. 532 (2), pp. 2741-2762. https://doi.org/10.1093/mnras/stae1634
Article Title

The mean longitudinal magnetic field and its uses in radial-velocity surveys

ERA Journal ID1074
Article CategoryArticle
AuthorsRescigno, F., Mortier, A., Dumusque, X., Lakeland, B. S., Haywood, R., Piskunov, N., Nicholson, B. A., Lopez-Morales, M., Dalal, S., Cretignier, M., Klein, B., Collier Cameron, A., Ghedina, A., Gonzalez, M., Cosentino, R., Sozzetti, A. and Saar, S. H.
Journal TitleMonthly Notices of the Royal Astronomical Society
Journal Citation532 (2), pp. 2741-2762
Number of Pages22
Year2024
PublisherOxford University Press
Place of PublicationUnited Kingdom
ISSN0035-8711
1365-2966
Digital Object Identifier (DOI)https://doi.org/10.1093/mnras/stae1634
Web Address (URL)https://academic.oup.com/mnras/article/532/2/2741/7710767
AbstractThis work focuses on the analysis of the mean longitudinal magnetic field as a stellar activity tracer in the context of small exoplanet detection and characterization in radial-velocity (RV) surveys. We use Solar Dynamics Observatory/Helioseismic and Magnetic Imager filtergrams to derive Sun-as-a-star magnetic field measurements, and show that the mean longitudinal magnetic field is an excellent rotational period detector and a useful tracer of the solar magnetic cycle. To put these results into context, we compare the mean longitudinal magnetic field to three common activity proxies derived from HARPS-N Sun-as-a-star data: the full width at half-maximum, the bisector span, and the S-index. The mean longitudinal magnetic field does not correlate with the RVs and therefore cannot be used as a one-to-one proxy. However, with high cadence and a long baseline, the mean longitudinal magnetic field outperforms all other considered proxies as a solar rotational period detector, and can be used to inform our understanding of the physical processes happening on the surface of the Sun. We also test the mean longitudinal magnetic field as a ‘stellar proxy’ on a reduced solar data set to simulate stellar-like observational sampling. With a Gaussian Process regression analysis, we confirm that the solar mean longitudinal magnetic field is the most effective of the considered indicators, and is the most efficient rotational period indicator over different levels of stellar activity. This work highlights the need for polarimetric time series observations of stars. © 2024 The Author(s).
Keywordsmethods: data analysis; techniques: radial velocitie; Sun: activity; Sun: magnetic fiel; planets and satellites: detectio; stars: activity
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20205101. Astronomical sciences
Byline AffiliationsUniversity of Exeter, United Kingdom
University of Birmingham, United Kingdom
University of Geneva, Switzerland
Uppsala University, Sweden
Centre for Astrophysics
Center for Astrophysics Harvard and Smithsonian, United States
University of Oxford, United Kingdom
University of St Andrews, United Kingdom
Galileo Galilei Foundation - INAF, Spain
INAF - Astrophysical Observatory of Turin, Italy
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Exoplanetary atmospheric sodium revealed by orbital motion: Narrow-band transmission spectroscopy of HD 189733b with UVES
Khalafinejad, S., von Essen, C., Hoeijmakers, H. J., Zhou, G., Klocova, T., Schmitt, J. H. M. M., Dreizler, S., Lopez-Morales, M., Husser, T. -O., Schmidt, T. O. B. and Collet, R.. 2017. "Exoplanetary atmospheric sodium revealed by orbital motion: Narrow-band transmission spectroscopy of HD 189733b with UVES." Astronomy and Astrophysics: a European journal. 598, pp. 1-12. https://doi.org/10.1051/0004-6361/201629473
The atmosphere of WASP-17b: Optical high-resolution transmission spectroscopy
Khalafinejad, Sara, Salz, Michael, Cubillos, Patricio E., Zhou, George, von Essen, Carolina, Husser, Tim-Oliver, Bayliss, Daniel D. R., Lopez-Morales, Mercedes, Dreizler, Stefan, Schmitt, Jurgen H. M. M. and Luftinger, Theresa. 2018. "The atmosphere of WASP-17b: Optical high-resolution transmission spectroscopy." Astronomy and Astrophysics: a European journal. 618, pp. 1-13. https://doi.org/10.1051/0004-6361/201732029
TOI-1431b/MASCARA-5b: A Highly Irradiated Ultrahot Jupiter Orbiting One of the Hottest and Brightest Known Exoplanet Host Stars
Addison, Brett C., Knudstrup, Emil, Wong, Ian, Hebrard, Guillaume, Dorval, Patrick, Snellen, Ignas, Albrecht, Simon, Bello-Arufe, Aaron, Almenara, Jose-Manuel, Boisse, Isabelle, Bonfils, Xavier, Dalal, Shweta, Demangeon, Olivier D. S., Hoyer, Sergio, Kiefer, Flavien, Santos, N. C., Nowak, Grzegorz, Luque, Rafael, Stangret, Monika, ..., McLean, Brian. 2021. "TOI-1431b/MASCARA-5b: A Highly Irradiated Ultrahot Jupiter Orbiting One of the Hottest and Brightest Known Exoplanet Host Stars." The Astronomical Journal. 162 (6), pp. 1-29. https://doi.org/10.3847/1538-3881/ac224e
EPIC 201702477b: A Transiting Brown Dwarf from K2 in a 41 day Orbit
Bayliss, D., Hojjatpanah, S., Santerne, A., Dragomir, D., Zhou, G., Shporer, A., Colon, K. D., Almenara, J., Armstrong, D. J., Barrado, D., Barros, S. C. C., Bento, J., Boisse, I., Bouchy, F., Brown, D. J. A., Brown, T., Cameron, A., Cochran, W. D., Demangeon, O., ..., Tsantaki, M.. 2016. "EPIC 201702477b: A Transiting Brown Dwarf from K2 in a 41 day Orbit." The Astronomical Journal. 153 (1), pp. 1-10. https://doi.org/10.3847/1538-3881/153/1/15
TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet
Osborn, Ares, Armstrong, David J., Cale, Bryson, Brahm, Rafael, Wittenmyer, Robert A., Dai, Fei, Crossfield, Ian J. M., Bryant, Edward M., Adibekyan, Vardan, Cloutier, Ryan, Collins, Karen A., Mena, E. Delgado, Fridlund, Malcolm, Hellier, Coel, Howell, Steve B., King, George W., Lillo-Box, Jorge, Otegi, Jon, Sousa, S., ..., Zohrabi, F.. 2021. "TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet." Monthly Notices of the Royal Astronomical Society. 507 (2), pp. 2782-2803. https://doi.org/10.1093/mnras/stab2313
The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b
Addison, Brett C., Horner, Jonathan, Wittenmyer, Robert A., Heitzmann, Alexis, Plavchan, Peter, Wright, Duncan J., Nicholson, Belinda A., Marshall, Jonathan P., Clark, Jake T., Gunther, Maximilian N., Kane, Stephen R., Hirano, Teruyuki, Wang, Songhu, Kielkopf, John, Shporer, Avi, Tinney, C. G., Zhang, Hui, Ballard, Sarah, Bedding, Timothy, ..., Wang, Xian-Yu. 2021. "The Youngest Planet to Have a Spin-Orbit Alignment Measurement AU Mic b." The Astronomical Journal. 162 (4), pp. 1-12. https://doi.org/10.3847/1538-3881/ac1685
The surface magnetic activity of the weak-line T Tauri stars TWA 7 and TWA 25
Nicholson, B. A., Hussain, G., Donati, J.-F., Wright, D., Folsom, C.P., Wittenmyer, R., Okumura, J. and Carter, B.D.. 2021. "The surface magnetic activity of the weak-line T Tauri stars TWA 7 and TWA 25." Monthly Notices of the Royal Astronomical Society. 504 (2), pp. 2461-2473. https://doi.org/10.1093/mnras/stab879
Spectral Line Depth Variability in Radial Velocity Spectra
Wise, Alexander, Plavchan, Peter, Dumusque, Xavier, Cegla, Heather and Wright, Duncan. 2022. "Spectral Line Depth Variability in Radial Velocity Spectra." The Astrophysical Journal: an international review of astronomy and astronomical physics. 930 (2). https://doi.org/10.3847/1538-4357/ac649b
HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star
Heidari, N., Boisse, I., Orell-Miquel, J., Hebrard, G., Acuna, L., Hara, N. C., Lillo-Box, J., Eastman, J. D., Arnold, L., Astudillo-Defru, N., Adibekyan, V., Bieryla, A., Bonfils, X., Bouchy, F., Barclay, T., Brasseur, C. E., Borgniet, S., Bourrier, V., Buchhave, L., ..., Weiss, L. M.. 2022. "HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star." Astronomy and Astrophysics: a European journal. 658. https://doi.org/10.1051/0004-6361/202141429
The HD 93963 A transiting system: A 1.04 d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS
Serrano, L. M., Gandolfi, D., Hoyer, S., Brandeker, A., Hooton, M. J., Sousa, S., Murgas, F., Ciardi, D. R., Howell, S. B., Benz, W., Billot, N., Floren, H.-G., Bekkelien, A., Bonfanti, A., Krenn, A., Mustill, A. J., Wilson, T. G., Osborn, H., Parviainen, H., ..., Walton, N.. 2022. "The HD 93963 A transiting system: A 1.04 d super-Earth and a 3.65 d sub-Neptune discovered by TESS and CHEOPS." Astronomy and Astrophysics. 667, p. A1. https://doi.org/10.1051/0004-6361/202243093
One year of AU Mic with HARPS: I-measuring the masses of the two transiting planets
Zicher, Norbert, Barragan, Oscar, Klein, Baptiste, Aigrain, Suzanne, Owen, James E., Gandolfi, Davide, Lagrange, Anne-Marie, Serrano, Luisa Maria, Kaye, Laurel, Nielsen, Louise Dyregaard, Rajpaul, Vinesh Maguire, Grandjean, Antoine, Goffo, Elisa and Nicholson, Belinda. 2022. "One year of AU Mic with HARPS: I-measuring the masses of the two transiting planets." Monthly Notices of the Royal Astronomical Society. 512 (2), pp. 3060-3078. https://doi.org/10.1093/mnras/stac614
One year of AU Mic with HARPS - II. Stellar activity and star-planet interaction
Klein, Baptiste, Zicher, Norbert, Kavanagh, Robert D., Nielsen, Louise D, Aigrain, Suzanne, Vidotto, Aline A., Barragan, Oscar, Strugarek, Antoine, Nicholson, Belinda, Donati, Jean-Francois and Bouvier, Jerome. 2022. "One year of AU Mic with HARPS - II. Stellar activity and star-planet interaction." Monthly Notices of the Royal Astronomical Society. 512 (4), pp. 5067-5084. https://doi.org/10.1093/mnras/stac761
Quasi-periodic Gaussian processes for stellar activity: From physical to kernel parameters
Nicholson, B. A. and Aigrain, S. 2022. "Quasi-periodic Gaussian processes for stellar activity: From physical to kernel parameters." Monthly Notices of the Royal Astronomical Society. 515 (4), pp. 5251-5266. https://doi.org/10.1093/mnras/stac2097
The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions
Stangret, M., Palle, E., Casasayas-Barris, N., Oshagh, M., Bello-Arufe, A., Luque, R., Nascimbeni, V., Yan, F., Orell-Miquel, J., Sicilia, D., Malavolta, L., Addison, B. C., Buchhave, L. A., Bonomo, A. S., Borsa, F., Cabot, S. H. C., Cecconi, M., Fischer, D. A., Harutyunyan, A., ..., Tronsgaard, R.. 2021. "The obliquity and atmosphere of the ultra-hot Jupiter TOI-1431b (MASCARA-5b): A misaligned orbit and no signs of atomic or molecular absorptions." Astronomy and Astrophysics: a European journal. 654, pp. 1-13. https://doi.org/10.1051/0004-6361/202040100
TOI-257b (HD 19916b): a warm sub-saturn orbiting an evolved F-type star
Addison, Brett C., Wright, Duncan J., Nicholson, Belinda A., Cale, Bryson, Mocnik, Teo, Huber, Daniel, Plavchan, Peter, Wittenmyer, Robert A., Vanderburg, Andrew, Chaplin, William J., Chontos, Ashley, Clark, Jake T., Eastman, Jason D., Ziegler, Carl, Brahm, Rafael, Carter, Bradley D., Clerte, Mathieu, Espinoza, Nestor, Horner, Jonathan, ..., Themeßl, Nathalie. 2021. "TOI-257b (HD 19916b): a warm sub-saturn orbiting an evolved F-type star." Monthly Notices of the Royal Astronomical Society. 502 (3), pp. 3704-3722. https://doi.org/10.1093/mnras/staa3960
Planet Hunters TESS II: findings from the first two years of TESS
Eisner, N. L., Barragan, O., Lintott, C., Aigrain, S., Nicholson, B., Boyajian, T. S., Howells, S., Johnston, C., Lakeland, B., Miller, G., McMaster, A., Parviainen, H., Safron, E. J., Schwamb, M. E., Trouille, L., Vaughan, S., Zicher, N., Allen, C., Allen, S., ..., Hoffman, T.. 2021. "Planet Hunters TESS II: findings from the first two years of TESS." Monthly Notices of the Royal Astronomical Society. 501 (4), pp. 4669-4690. https://doi.org/10.1093/mnras/staa3739
Planet Hunters TESS III: two transiting planets around the bright G dwarf HD 152843
Eisner, N. L., Nicholson, B. A., Barragan, O., Aigrain, S., Lintott, C., Kaye, L., Klein, B., Miller, G., Taylor, J., Zicher, N., Buchhave, L. A., Caldwell, D. A., Horner, J., Llama, J., Mortier, A., Rajpaul, V. M., Stassun, K., Sporer, A., Tkachenko, A., ..., Wilson, G. M.. 2021. "Planet Hunters TESS III: two transiting planets around the bright G dwarf HD 152843." Monthly Notices of the Royal Astronomical Society. 505 (2), pp. 1827-1840. https://doi.org/10.1093/mnras/stab1253
Transits of Known Planets Orbiting a Naked-eye Star
Kane, Stephen R., Yalcinkaya, Selcuk, Osborn, Hugh P., Dalba, Paul A., Nielsen, Louise D., Vanderburg, Andrew, Mocnik, Teo, Hinkel, Natalie R., Ostberg, Colby, Esmer, Ekrem Murat, Udry, Stephane, Fetherolf, Tara, Basturk, Ozgur, Ricker, George R., Vanderspek, Roland, Latham, David W., Seager, Sara, Winn, Joshua N., Jenkins, Jon M., ..., Wright, Jason T.. 2020. "Transits of Known Planets Orbiting a Naked-eye Star." The Astronomical Journal. 160 (3), pp. 1-10. https://doi.org/10.3847/1538-3881/aba835
Fungal Planet description sheets: 1042-1111
Crous, P. W., Wingfield, M. J., Chooi, Y.-H., Gilchrist, C. L. M., Lacey, E., Pitt, J. I., Roets, F., Swart, W. J., Cano-Lira, J. F., Valenzuela-Lopez, N., Hubka, V., Shivas, R. G., Stchigel, A. M., Holdom, D. G., Jurjevic, Z., Kachalkin, A. V., Lebel, T., Lock, C., Martin, M. P., ..., Groenewald, J. Z.. 2020. "Fungal Planet description sheets: 1042-1111." Persoonia. 44, pp. 301-459. https://doi.org/10.3767/persoonia.2020.44.11
MINERVA-Australis. I. Design, Commissioning, and First Photometric Results
Addison, Brett, Wright, Duncan J., Wittenmyer, Robert A., Horner, Jonathan, Mengel, Matthew W., Johns, Daniel, Marti, Connor, Nicholson, Belinda, Okumura, Jack, Bowler, Brendan, Crossfield, Ian, Kane, Stephen R., Kielkopf, John, Plavchan, Peter, Tinney, C.G., Zhang, Hui, Clark, Jake T., Clerte, Mathieu, Eastman, Jason D., ..., Carter, Bradley D.. 2019. "MINERVA-Australis. I. Design, Commissioning, and First Photometric Results." Publications of the Astronomical Society of the Pacific. 131 (1005), pp. 1-15. https://doi.org/10.1088/1538-3873/ab03aa
Supernova Hunters Discovery of 24 Optical Transients with Pan-STARRS
Fulton, M., Smith, K. W., Wright, D. E., Simmons, B., Krawczyk, C., Huber, M., Srivastav, S., Lintott, C., Nicholson, B., Miller, G., Galbany, L., Smartt, S. J., Chambers, K. C., Ince, Robin, Burton, Trent, Burton, Melinda, Gostling, Joanna, McBrien, O. R., Young, D. R., ..., Wals, Jennifer S. 2020. "Supernova Hunters Discovery of 24 Optical Transients with Pan-STARRS." Transient Name Server AstroNote.
The gender balance of the Australian space research community: a snapshot from the 16th ASRC, 2016
Horner, Jonathan, Nicholson, Belinda, Cairns, Ann, Short, Wayne and Gorman, Alice. 2017. "The gender balance of the Australian space research community: a snapshot from the 16th ASRC, 2016." Short, Wayne and Cairns, Iver (ed.) 16th Australian Space Research Conference (ASRC 2016). Melbourne, Australia 26 - 28 Sep 2016 Sydney, Australia.
The surface magnetic activity of the weak-line T Tauri stars TWA 9Aand V1095 Sco
Nicholson, B. A., Hussain, G. A. J., Donati, J.-F., Folsom, C. P., Mengel, M., Carter, B. D. and Wright, D.. 2018. "The surface magnetic activity of the weak-line T Tauri stars TWA 9Aand V1095 Sco." Monthly Notices of the Royal Astronomical Society. 480 (2), pp. 1754-1766. https://doi.org/10.1093/mnras/sty1965
The magnetic activity, winds and planets of young, cool stars
Nicholson, Belinda A.. 2018. The magnetic activity, winds and planets of young, cool stars. PhD Thesis Doctor of Philosophy. University of Southern Queensland. https://doi.org/10.26192/5f643970ce22a
Rotation in the Pleiades with K2. III. Speculations on origins and evolution
Stauffer, John, Rebull, Luisa, Bouvier, Jerome, Hillenbrand, Lynne A., Collier-Cameron, Andrew, Pinsonneault, Marc, Aigrain, Suzanne, Barrado, David, Bouy, Herve, Ciardi, David, Cody, Ann Marie, David, Trevor, Micela, Giusi, Soderblom, David, Somers, Garrett, Stassun, Keivan G., Valenti, Jeff and Vrba, Frederick J.. 2016. "Rotation in the Pleiades with K2. III. Speculations on origins and evolution." The Astronomical Journal. 152 (5), pp. 1-22. https://doi.org/10.3847/0004-6256/152/5/115
Observations of transiting exoplanets with the James Webb Space Telescope (JWST)
Beichman, Charles, Benneke, Bjoern, Knutson, Heather, Smith, Roger, Lagage, Pierre Olivier, Dressing, Courtney, Latham, David, Lunine, Jonathan, Birkmann, Stephan, Ferruit, Pierre, Giardino, Giovanna, Kempton, Eliza, Carey, Sean, Krick, Jessica, Deroo, Pieter D., Mandell, Avi, Ressler, Michael E., Shporer, Avi, Swain, Mark, ..., Sing, David. 2014. "Observations of transiting exoplanets with the James Webb Space Telescope (JWST)." Publications of the Astronomical Society of the Pacific. 126 (946), pp. 1134-1173. https://doi.org/10.1086/679566
Rotation in the Pleiades with K2. II. Multiperiod stars
Rebull, L. M., Stauffer, J. R., Bouvier, J., Cody, A. M., Hillenbrand, L. A., Soderblom, D. R., Valenti, J., Barrado, D., Bouy, H., Ciardi, D., Pinsonneault, M., Stassun, K., Micela, G., Aigrain, S., Vrba, F., Somers, G., Gillen, E. and Collier Cameron, A.. 2016. "Rotation in the Pleiades with K2. II. Multiperiod stars." The Astronomical Journal. 152 (5), pp. 114-133. https://doi.org/10.3847/0004-6256/152/5/114
Astrophysical parameters and habitable zone of the exoplanet hosting star GJ 581
von Braun, Kaspar, Boyajian, Tabetha S., Kane, Stephen R., van Belle, Gerard T., Ciardi, David R., Lopez-Morales, Mercedes, McAlister, Harold A., Henry, Todd J., Jao, Wei Chun, Riedel, Adric R., Subasavage, John P., Schaefer, Gail, ten Brummelaar, Theo A., Ridgway, Stephen, Sturmann, Laszlo, Sturmann, Judit, Mazingue, Jude, Turner, Nils H., Farrington, Chris, ..., Boden, Andrew F.. 2011. "Astrophysical parameters and habitable zone of the exoplanet hosting star GJ 581." The Astrophysical Journal Letters. 729 (2), pp. L26-L30. https://doi.org/10.1088/2041-8205/729/2/L26
55 Cancri: stellar astrophysical parameters, a planet in the habitable zone, and implications for the radius of a transiting super-earth
von Braun, Kaspar, Boyajian, Tabetha S., ten Brummelaar, Theo A., Kane, Stephen R., van Belle, Gerard T., Ciardi, David R., Raymond, Sean N., Lopez-Morales, Mercedes, McAlister, Harold A., Schaefer, Gail, Ridgway, Stephen T., Sturmann, Laszlo, Sturmann, Judit, White, Russel, Turner, Nils H., Farrington, Chris and Goldfinger, P. J.. 2011. "55 Cancri: stellar astrophysical parameters, a planet in the habitable zone, and implications for the radius of a transiting super-earth." The Astrophysical Journal: an international review of astronomy and astronomical physics. 740 (1), pp. 49-54. https://doi.org/10.1088/0004-637X/740/1/49
The GJ436 system: directly determined astrophysical parameters of an M dwarf and implications for the transiting hot Neptune
von Braun, Kaspar, Boyajian, Tabetha S., Kane, Stephen R., Hebb, Leslie, van Belle, Gerard T., Farrington, Chris, Ciardi, David R., Knutson, Heather A., ten Brummelaar, Theo A., Lopez-Morales, Mercedes, McAlister, Harold A., Schaefer, Gail, Ridgway, Stephen, Cameron, Andrew Collier, Goldfinger, P. J., Turner, Nils H., Sturmann, Laszlo and Sturmann, Judit. 2012. "The GJ436 system: directly determined astrophysical parameters of an M dwarf and implications for the transiting hot Neptune." The Astrophysical Journal: an international review of astronomy and astronomical physics. 753 (2), pp. 171-179. https://doi.org/10.1088/0004-637X/753/2/171
Stellar diameters and temperatures. II. Main-sequence K- and M-stars
Boyajian, Tabetha S., von Braun, Kaspar, van Belle, Gerard, McAlister, Harold A., ten Brummelaar, Theo A., Kane, Stephen R., Muirhead, Philip S., Jones, Jeremy, White, Russel, Schaefer, Gail, Ciardi, David, Henry, Todd, Lopez-Morales, Mercedes, Ridgway, Stephen, Gies, Douglas, Jao, Wei Chun, Rojas-Ayala, Barbara, Parks, J. Robert, Sturmann, Laszlo, ..., Berger, David H.. 2012. "Stellar diameters and temperatures. II. Main-sequence K- and M-stars." The Astrophysical Journal: an international review of astronomy and astronomical physics. 757 (2), pp. 112-142. https://doi.org/10.1088/0004-637X/757/2/112
Stellar diameters and temperatures - V. 11. Newly characterized exoplanet host stars
von Braun, Kaspar, Boyajian, Tabetha S., van Belle, Gerard T., Kane, Stephen R., Jones, Jeremy, Farrington, Chris, Schaefer, Gail, Vargas, Norm, Scott, Nic, ten Brummelaar, Theo A., Kephart, Miranda, Gies, Douglas R., Ciardi, David R., Lopez-Morales, Mercedes, Mazingue, Cassidy, McAlister, Harold A., Ridgway, Stephen, Goldfinger, P. J., Turner, Nils H. and Sturmann, Laszlo. 2014. "Stellar diameters and temperatures - V. 11. Newly characterized exoplanet host stars." Monthly Notices of the Royal Astronomical Society. 438 (3), pp. 2413-2425. https://doi.org/10.1093/mnras/stt2360
Stellar diameters and temperatures. VI. High angular resolution measurements of the transiting exoplanet host stars HD 189733 and HD 209458 and implications for models of cool dwarfs
Boyajian, Tabetha, von Braun, Kaspar, Feiden, Gregory A., Huber, Daniel, Basu, Sarbani, Demarque, Pierre, Fischer, Debra A., Schaefer, Gail, Mann, Andrew W., White, Timothy R., Maestro, Vicente, Brewer, John, Lamell, C. Brooke, Spada, Federico, Lopez-Morales, Mercedes, Ireland, Michael, Farrington, Chris, van Belle, Gerard T., Kane, Stephen R., ..., Sturmann, Laszlo. 2015. "Stellar diameters and temperatures. VI. High angular resolution measurements of the transiting exoplanet host stars HD 189733 and HD 209458 and implications for models of cool dwarfs." Monthly Notices of the Royal Astronomical Society. 447 (1), pp. 846-857. https://doi.org/10.1093/mnras/stu2502
Rotation in the Pleiades with K2. I. Data and first results
Rebull, L. M., Stauffer, J. R., Bouvier, J., Cody, A. M., Hillenbrand, L. A., Soderblom, D. R., Valenti, J., Barrado, D., Bouy, H., Ciardi, D., Pinsonneault, M., Stassun, K., Micela, G., Aigrain, S., Vrba, F., Somers, G., Christiansen, J., Gillen, E. and Collier Cameron, A.. 2016. "Rotation in the Pleiades with K2. I. Data and first results." The Astronomical Journal. 152 (5), pp. 113-131. https://doi.org/10.3847/0004-6256/152/5/113
State of the Field: Extreme Precision Radial Velocities
Fischer, Debra A., Anglada-Escude, Guillem, Arriagada, Pamela, Baluev, Roman V., Bean, Jacob L., Bouchy, Francois, Buchave, Lars A., Carroll, Thorsten, Chakraborty, Abhijit, Crepp, Justin R., Dawson, Rebekah I., Diddams, Scott A., Dumusque, Xavier, Eastman, Jason D., Endl, Michael, Figueira, Pedro, Ford, Eric B., Foreman-Mackey, Daniel, Fournier, Paul, ..., Wright, Jason T.. 2016. "State of the Field: Extreme Precision Radial Velocities." Publications of the Astronomical Society of the Pacific. 128 (964), pp. 1-43. https://doi.org/10.1088/1538-3873/128/964/066001
Temporal variability of the wind from the star τ Boötis
Nicholson, B. A., Vidotto, A. A., Mengel, M., Brookshaw, L., Carter, B., Petit, P., Marsden, S. C., Jeffers, S. V. and Fares, R.. 2016. "Temporal variability of the wind from the star τ Boötis." Monthly Notices of the Royal Astronomical Society. 459 (2), pp. 1907-1915. https://doi.org/10.1093/mnras/stw731
Winds of planet hosting stars
Nicholson, B. A., Mengel, M. W., Brookshaw, L., Vidotto, A. A., Carter, B. D., Marsden, S. C., Soutter, J., Waite, I. A. and Horner, J.. 2015. "Winds of planet hosting stars." Short, Wayne and Cairns, Iver (ed.) 14th Australian Space Research Conference (ASRC 2014). Adelaide, Australia 29 Sep - 01 Oct 2014 Sydney, Australia.
Characterizing the cross dispersion reflection gratings of CRIRES+
Follert, Roman, Taubert, Dieter, Hollandt, Joerg, Monte, Christian, Oliva, Ernesto, Seemann, Ulf, Loewinger, Tom, Anwand-Heerwart, Heiko, Schmidt, Christof, Dorn, Reinhold J., Bristow, Paul, Hatzes, Artie, Reiners, Ansgar, Piskunov, Nikolai, Heiter, Ulrike, Stempels, Eric, Marquart, Thomas, Lavail, Alexis, Cumani, Claudio, ..., Tordo, Sebastien. 2016. "Characterizing the cross dispersion reflection gratings of CRIRES+." SPIE - Ground-based and Airborne Instrumentation for Astronomy. United States. SPIE. https://doi.org/10.1117/12.2232569
The "+" for CRIRES: enabling better science at infrared wavelength and high spectral resolution at the ESO VLT
Dorn, Reinhold J, Follert, Roman, Bristow, Paul, Cumani, Claudio, Eschbaumer, Siegfried, Grunhut, Jason, Haimerl, Andreas, Hatzes, Artie, Heiter, Ulrike, Hinterschuster, Renate, Ives, Derek J, Jung, Yves, Kerber, Florian, Klein, Barbara, Lavaila, Alexis, Lizon, Jean Louis, Löwinger, Tom, Molina-Condea, Ignacio, Nicholson, Belinda, ..., Tordo, Sebastien. 2016. "The "+" for CRIRES: enabling better science at infrared wavelength and high spectral resolution at the ESO VLT ." Ground-based and Airborne Instrumentation for Astronomy IV. Edinburgh, United Kingdom 26 Jun - 01 Jul 2016 United States. SPIE. https://doi.org/10.1117/12.2232837
Alignment in star-debris disc systems seen by Herschel
Greaves, J. S., Kennedy, G. M., Thureau, N., Eiroa, C., Marshall, J. P., Maldonado, J., Matthews, B. C., Olofsson, G., Barlow, M. J., Moro-Martin, A., Sibthorpe, B., Absil, O., Ardila, D. R., Booth, M., Broekhoven-Fiene, H., Brown, D. J. A., Collier Cameron, A., Del Burgo, C., Di Francesco, J., ..., Wyatt, M. C.. 2014. "Alignment in star-debris disc systems seen by Herschel." Monthly Notices of the Royal Astronomical Society: Letters. 438 (1), pp. L31-L35. https://doi.org/10.1093/mnrasl/slt153
Stellar magnetism: empirical trends with age and rotation
Vidotto, A. A., Gregory, S. G., Jardine, M., Donati, J. -F., Petit, P., Morin, J., Folsom, C. P., Bouvier, J., Cameron, A. C., Hussain, G., Marsden, S., Waite, I. A., Fares, R., Jeffers, S. and do Nascimento Jr., J.-D.. 2014. "Stellar magnetism: empirical trends with age and rotation." Monthly Notices of the Royal Astronomical Society. 441 (3), pp. 2361-2374. https://doi.org/10.1093/mnras/stu728
Magnetospheric accretion on the T Tauri star BP Tauri
Donati, J. -F., Jardine, M. M., Gregory, S. G., Petit, P., Paletou, F., Bouvier, J., Dougados, C., Menard, F., Cameron, A. C., Harries, T. J., Hussain, G. A. J., Unruh, Y., Morin, J., Marsden, S. C., Manset, N., Auriere, M., Catala, C. and Alecian, E.. 2008. "Magnetospheric accretion on the T Tauri star BP Tauri." Monthly Notices of the Royal Astronomical Society. 386 (3), pp. 1234-1251. https://doi.org/10.1111/j.1365-2966.2008.13111.x
The first magnetic maps of a pre-main-sequence binary star system - HD 155555
Dunstone, N. J., Hussain, G. A. J., Collier Cameron, A., Marsden, S. C., Jardine, M., Stempels, H. C., Ramirez Velez, J. C. and Donati, J. -F.. 2008. "The first magnetic maps of a pre-main-sequence binary star system - HD 155555." Monthly Notices of the Royal Astronomical Society. 387 (2), pp. 481-496. https://doi.org/10.1111/j.1365-2966.2008.13196.x
Differential rotation on both components of the pre-main-sequence binary system HD 155555
Dunstone, N. J., Hussain, G. A. J., Collier Cameron, A., Marsden, S. C., Jardine, M., Barnes, J. R., Ramirez Velez, J. C. and Donati, J. -F.. 2008. "Differential rotation on both components of the pre-main-sequence binary system HD 155555." Monthly Notices of the Royal Astronomical Society. 387 (4), pp. 1525-1536. https://doi.org/10.1111/j.1365-2966.2008.13338.x
Long-term magnetic field monitoring of the Sun-like star ksi Bootis A
Morgenthaler, A., Petit, P., Saar, S., Solanki, S. K., Morin, J., Marsden, S. C., Auriere, M., Dintrans, B., Fares, R., Gastine, T., Lanoux, J., Lignieres, F., Paletou, F., Ramirez Velez, J. C., Theado, S. and Van Grootel, V.. 2012. "Long-term magnetic field monitoring of the Sun-like star ksi Bootis A." Astronomy and Astrophysics: a European journal. 540, pp. 1-15. https://doi.org/10.1051/0004-6361/201118139
Spectropolarimetric observations of active stars
Donati, J. -F., Semel, M., Carter, B. D., Rees, D. E. and Cameron, A. C.. 1997. "Spectropolarimetric observations of active stars." Monthly Notices of the Royal Astronomical Society. 291 (4), pp. 658-682. https://doi.org/10.1093/mnras/291.4.658
Dynamo processes and activity cycles of the active stars AB Doradus, LQ Hydrae and HR 1099
Donati, J.-F., Collier Cameron, A., Semel, M., Hussain, G. A. J., Petit, P., Carter, B. D., Marsden, S. C., Mengel, M., Lopez Ariste, A., Jeffers, S. V. and Rees, D. E.. 2003. "Dynamo processes and activity cycles of the active stars AB Doradus, LQ Hydrae and HR 1099." Monthly Notices of the Royal Astronomical Society. 345 (4), pp. 1145-1186. https://doi.org/10.1046/j.1365-2966.2003.07031.x
Surface magnetic fields on two accreting T Tauri stars: CV Cha and CR Cha
Hussain, G. A. J., Collier Cameron, A., Jardine, M. M., Dunstone, N., Ramirez Velez, J., Stempels, H. C., Donati, J.-F., Semel, M., Aulanier, G., Harries, T., Bouvier, J., Dougados, C., Ferreira, J., Carter, B. D. and Lawson, W. A.. 2009. "Surface magnetic fields on two accreting T Tauri stars: CV Cha and CR Cha." Monthly Notices of the Royal Astronomical Society. 398 (1), pp. 189-200. https://doi.org/10.1111/j.1365-2966.2009.14881.x
Doppler images and chromospheric variability of TWA 6
Skelly, M. B., Unruh, Y. C., Cameron, A. Collier, Barnes, J. R., Donati, J.-F., Lawson, W. A. and Carter, B. D.. 2008. "Doppler images and chromospheric variability of TWA 6." Monthly Notices of the Royal Astronomical Society. 385 (2), pp. 708-718. https://doi.org/10.1111/j.1365-2966.2008.12917.x
The Kepler characterization of the variability among A- and F-type stars I. General overview
Uytterhoeven, K., Moya, A., Grigahcene, A., Guzik, J. A., Gutierrez-Soto, J., Smalley, B., Handler, G., Balona, L. A., Niemczura, E., Fox Machado, L., Benatti, S., Chapellier, E., Tkachenko, A., Szabo, R., Suarez, J. C., Ripepi, V., Pascual, J., Mathias, P., Martin-Ruiz, S., ..., Van Cleve, J.. 2011. "The Kepler characterization of the variability among A- and F-type stars I. General overview." Astronomy and Astrophysics: a European journal. 534. https://doi.org/10.1051/0004-6361/201117368
A multi-site campaign to measure solar-like oscillations in Procyon. II. mode frequencies
Bedding, Timothy R., Kjeldsen, Hans, Campante, Tiago L., Appourchaux, Thierry, Bonanno, Alfio, Chaplin, William J., Garcia, Rafael A., Martić, Milena, Mosser, Benoit, Butler, R. Paul, Bruntt, Hans, Kiss, László L., O'Toole, Simon J., Kambe, Eiji, Ando, Hiroyasu, Izumiura, Hideyuki, Sato, Bun'ei, Hartmann, Michael, Hatzes, Artie, ..., Reffert, Sabine. 2010. "A multi-site campaign to measure solar-like oscillations in Procyon. II. mode frequencies." The Astrophysical Journal: an international review of astronomy and astronomical physics. 713 (2), pp. 935-949. https://doi.org/10.1088/0004-637X/713/2/935
Surface differential rotation and prominences of the Lupus post T Tauri star RX J1508.6-4423
Donati, J.-F., Mengel, M., Carter, B. D., Marsden, S., Collier Cameron, A. and Wichmann, R.. 2000. "Surface differential rotation and prominences of the Lupus post T Tauri star RX J1508.6-4423." Monthly Notices of the Royal Astronomical Society. 316 (3), pp. 699-715. https://doi.org/10.1046/j.1365-8711.2000.03570.x