One year of AU Mic with HARPS: I-measuring the masses of the two transiting planets

Article


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
Article Title

One year of AU Mic with HARPS: I-measuring the masses of the two transiting planets

ERA Journal ID1074
Article CategoryArticle
AuthorsZicher, 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
Journal TitleMonthly Notices of the Royal Astronomical Society
Journal Citation512 (2), pp. 3060-3078
Number of Pages19
Year02 May 2022
PublisherOxford University Press
Place of PublicationUnited Kingdom
ISSN0035-8711
1365-2966
Digital Object Identifier (DOI)https://doi.org/10.1093/mnras/stac614
Web Address (URL)https://academic.oup.com/mnras/article/512/2/3060/6547782
Abstract

The system of two transiting Neptune-sized planets around the bright, young M-dwarf AU Mic provides a unique opportunity to test models of planet formation, early evolution, and star–planet interaction. However, the intense magnetic activity of the hoststar makes measuring the masses of the planets via the radial velocity (RV) method very challenging. We report on a 1-yr, intensive monitoring campaign of the system using 91 observations with the HARPS spectrograph, allowing for detailed modelling of the ∼600 m s−1 peak-to-peak activity-induced RV variations. We used a multidimensional Gaussian Process framework to model these and the planetary signals simultaneously. We detect the latter with semi-amplitudes of Kb = 5.8 ± 2.5 m s−1 and Kc = 8.5 ± 2.5 m s−1, respectively. The resulting mass estimates, Mb = 11.7 ± 5.0 M⊕ and Mc = 22.2 ± 6.7 M⊕, suggest that planet b might be less dense, and planet c considerably denser than previously thought. These results are in tension with the current standard models of core-accretion. They suggest that both planets accreted a H/He envelope that is smaller than expected, and the trend between the two planets’ envelope fractions is the opposite of what is predicted by theory.

Keywordstechniques: radial velocities; techniques: spectroscopic; stars: individual: AU Microscopii; planets and satellites: fundamental parameters; stars: activity; stars: starspots
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020510109. Stellar astronomy and planetary systems
Public Notes

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © The Author(s) 2022. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

TitleOne year of AU Mic with HARPS: I-measuring the masses of the two transiting planets
Byline AffiliationsUniversity of Oxford, United Kingdom
Imperial College London, United Kingdom
University of Turin, Italy
Grenoble Alpes University, France
University of Geneva, Switzerland
University of Cambridge, United Kingdom
Karl Schwarzschild Observatory, Germany
School of Mathematics, Physics and Computing
Centre for Astrophysics
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Petigura, Erik A., Rogers, James G., Isaacson, Howard, Owen, James E., Kraus, Adam L., Winn, Joshua N., MacDougall, Mason G., Howard, Andrew W., Fulton, Benjamin J., Kosiarek, Molly R., Weiss, Lauren M., Behmard, Aida and Blunt, Sarah. 2022. "The California-Kepler Survey. X. the Radius Gap as a Function of Stellar Mass, Metallicity, and Age." The Astronomical Journal. 163 (4). https://doi.org/10.3847/1538-3881/ac51e3
Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographs
Knudstrup, Emil, Serrano, Luisa M., Gandolfi, David, Albrecht, Simon H., Cochran, William D., Endl, Michael, MacQueen, Phillip J., Tronsgaard, Rene, Bieryla, Allyson, Buchhave, Lars A., Stassun, Kievan G., Collins, Karen A., Nowak, Grzegorz, Deeg, Hans J., Barkaoui, Khalid, Safonov, Boris S., Strakhov, Ivan A., Belinski, Alexandre A., Twicken, Joseph D., ..., Watanabe, David. 2022. "Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographs." Astronomy and Astrophysics: a European journal. 667. https://doi.org/10.1051/0004-6361/202243656
TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to Have Originated from High-eccentricity Migration
Tran, Quang H., Bowler, Brendan P., Endl, Michael, Cochran, William D., MacQueen, Phillip J., Gandolfi, Davide, Persson, Carina M., Fridlund, Malcolm, Palle, Enric, Nowak, Grzegorz, Deeg, Hans J., Luque, Rafael, Livingston, John H., Kabath, Petr, Skarka, Marek, Subjak, Ján, Howell, Steve B., Albrecht, Simon H., Collins, Karen A., ..., Winn, Joshua N.. 2022. "TOI-1670 b and c: An Inner Sub-Neptune with an Outer Warm Jupiter Unlikely to Have Originated from High-eccentricity Migration." The Astronomical Journal. 163 (5). https://doi.org/10.3847/1538-3881/ac5c4f
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
HD 28109 hosts a trio of transiting Neptunian planets including a near-resonant pair, confirmed by ASTEP from Antarctica Get access Arrow
Dransfield, Georgina, Triaud, Amaury H M J, Guillot, Tristan, Mekarnia, Djamel, Nesvorny, David, Crouzet, Nicolas, Abe, Lyu, Agabi, Karim, Buttu, Marco, Cabrera, Juan, Gandolfi, Davide, Gunther, Maximilian N, Rodler, Florian, Schmider, Francois-Xavier, Stee, Philippe, Suarez, Olga, Collins, Karen A, Dévora-Pajares, Martín, Howell, Steve B, ..., Zhou, George. 2022. "HD 28109 hosts a trio of transiting Neptunian planets including a near-resonant pair, confirmed by ASTEP from Antarctica Get access Arrow." Monthly Notices of the Royal Astronomical Society. 515 (1), pp. 1328-1345. https://doi.org/10.1093/mnras/stac1383
TOI-954 b and K2-329 b: short-period Saturn-mass planets that test whether irradiation leads to inflation
Sha, Lizhou, Huang, Chelsea X., Shporer, Avi, Rodriguez, Joseph E., Vanderburg, Andrew, Brahm, Rafael, Hagelberg, Janis, Matthews, Elisabeth C., Ziegler, Carl, Livingston, John H., Stassun, Keivan G., Wright, Duncan J., Crane, Jeffrey D., Espinoza, Nestor, Bouchy, Francois, Bakos, Gaspar A., Collins, Karen A., Zhou, George, Bieryla, Allyson, ..., Villanueva, Steven. 2021. "TOI-954 b and K2-329 b: short-period Saturn-mass planets that test whether irradiation leads to inflation." The Astronomical Journal. 161 (2). https://doi.org/10.3847/1538-3881/abd187
A transiting warm giant planet around the young active star TOI-201
Hobson, Melissa J., Brahm, Rafael, Jordan, Andres, Espinoza, Nestor, Kossakowski, Diana, Henning, Thomas, Rojas, Felipe, Schlecker, Martin, Sarkis, Paula, Trifonov, Trifon, Thorngren, Daniel, Binnenfeld, Avraham, Shahaf, Sahar, Zucker, Shay, Ricker, George R., Latham, David W., Seager, S., Winn, Joshua N., Jenkins, Jon M., ..., Wright, Duncan J.. 2021. "A transiting warm giant planet around the young active star TOI-201." The Astronomical Journal. 161 (5). https://doi.org/10.3847/1538-3881/abeaa1
TESS delivers five new hot giant planets orbiting bright stars from the full-frame images
Rodriguez, Joseph E., Quinn, Samuel N., Zhou, George, Vanderburg, Andrew, Nielsen, Louise D., Wittenmyer, Robert A., Brahm, Rafael, Reed, Phillip A., Huang, Chelsea X., Vach, Sydney, Ciardi, David R., Oelkers, Ryan J., Stassun, Keivan G., Hellier, Coel, Gaudi, B. Scott, Eastman, Jason D., Collins, Karen A., Bieryla, Allyson, Christian, Sam, ..., Zhang, Hui. 2021. "TESS delivers five new hot giant planets orbiting bright stars from the full-frame images." The Astronomical Journal. 161 (4). https://doi.org/10.3847/1538-3881/abe38a
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
TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite
Brahm, Rafael, Nielsen, Louise D., Wittenmyer, Robert A., Wang, Songhu, Rodriguez, Joseph E., Espinoza, Nestor, Jones, Matias I., Jordan, Andres, Henning, Thomas, Hobson, Melissa, Kossakowski, Diana, Rojas, Felipe, Sarkis, Paula, Schlecker, Martin, Trifonov, Trifon, Shahaf, Sahar, Ricker, George, Vanderspek, Roland, Latham, David W., ..., Ziegler, Carl. 2020. "TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite." The Astronomical Journal. 160 (5), pp. 1-14. https://doi.org/10.3847/1538-3881/abba3b
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
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
TOI-222: a single-transit TESS candidate revealed to be a 34-d eclipsing binary with CORALIE, EulerCam, and NGTS
Lendl, Monika, Bouchy, Francois, Gill, Samuel, Nielsen, Louise D., Turner, Oliver, Stassun, Keivan, Acton, Jack S., Anderson, David R., Armstrong, David J., Bayliss, Daniel, Belardi, Claudia, Bryant, Edward M., Burleigh, Matthew R., Chaushev, Alexander, Casewell, Sarah L., Cooke, Benjamin F., Eigmuller, Philipp, Gillen, Edward, Goad, Michael R., ..., Ziegler, Carl. 2019. "TOI-222: a single-transit TESS candidate revealed to be a 34-d eclipsing binary with CORALIE, EulerCam, and NGTS." Monthly Notices of the Royal Astronomical Society. 492 (2), pp. 1761-1769. https://doi.org/10.1093/mnras/stz3545
Near-resonance in a System of Sub-Neptunes from TESS
Quinn, Samuel N., Becker, Juliette C., Rodriguez, Joseph E., Hadden, Sam, Huang, Chelsea X., Morton, Timothy D., Adams, Fred C., Armstrong, David, Eastman, Jason D., Horner, Jonathan, Kane, Stephen R., Lissauer, Jack J., Twicken, Joseph D., Vanderburg, Andrew, Wittenmyer, Rob, Ricker, George R., Vanderspek, Roland K., Latham, David W., Seager, Sara, ..., Ziegler, Carl. 2019. "Near-resonance in a System of Sub-Neptunes from TESS." The Astronomical Journal. 158 (5), pp. 1-16. https://doi.org/10.3847/1538-3881/ab3f2b
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.
A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS
Nielsen, L. D., Bouchy, F., Turner, O., Giles, H., Suarez Mascareno, A., Lovis, C., Marmier, M., Pepe, F., Segransan, D., Udry, S., Otegi, J. F., Ottoni, G., Staport, M., Ricker, G., Vanderspek, R., Latham, D. W., Seager, S., Winn, J. N., Jenkins, J. M., ..., Schlieder, J.. 2019. "A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS." Astronomy and Astrophysics: a European journal. 623, pp. 1-8. https://doi.org/10.1051/0004-6361/201834577
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
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
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
The K2-Esprint Project. V. A short-period giant planet orbiting a subgiant star
Van Eylen, Vincent, Albrecht, Simon, Gandolfi, Davide, Dai, Fei, Winn, Joshua, Hirano, Teriyuki, Narita, Norio, Bruntt, Hans, Prieto-Arranz, Jorge, Bejar, Víctor, Nowak, Grzegorz, Lund, Mikkel, Palle, Enric, Ribas, Ignasi, Sanchis-Ojeda, Roberto, Yu, Liang, Arriagada, Pamela, Butler, R. Paul, Crane, Jeffrey D., ..., Wittenmyer, Robert. 2016. "The K2-Esprint Project. V. A short-period giant planet orbiting a subgiant star." The Astronomical Journal. 152 (5), pp. 1-11. https://doi.org/10.3847/0004-6256/152/5/143
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
The Discovery and Mass Measurement of a New Ultra-short-period Planet: K2-131b
Dai, Fei, Winn, Joshua N., Gandolfi, Davide, Wang, Sharon X., Teske, Johanna K., Burt, Jennifer, Albrecht, Simon, Barragan, Oscar, Cochran, William D., Endl, Michael, Fridlund, Malcolm, Hatzes, Artie P., Hirano, Teruyuki, Hirsch, Lea A., Johnson, Marshall C., Justesen, Anders Bo, Livingston, John, Persson, Carina M., Prieto-Arranz, Jorge, ..., Wittenmyer, Robert A.. 2017. "The Discovery and Mass Measurement of a New Ultra-short-period Planet: K2-131b." The Astronomical Journal. 154 (6), pp. 1-17. https://doi.org/10.3847/1538-3881/aa9065
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
Photometry of very bright stars with Kepler and K2 smear data
Pope, B. J. S., White, T. R., Huber, D., Murphy, S. J., Bedding, T. R., Caldwell, D. A., Sarai, A., Aigrain, S. and Barclay, T.. 2015. "Photometry of very bright stars with Kepler and K2 smear data." Monthly Notices of the Royal Astronomical Society. 455 (1), pp. L36-L40. https://doi.org/10.1093/mnrasl/slv143