JWST 1.5 μm and 4.8 μm Photometry of Y Dwarfs

Article

Albert, Loic, Leggett, Sandy K., Calissendorff, Per, Vandal, Thomas, Kirkpatrick, J. Davy, Bardalez Gagliuffi, Daniella C., Furio, Matthew, Meyer, Michael, Beichman, Charles A., Burgasser, Adam J., Cushing, Michael C., Faherty, Jacqueline Kelly, Fontanive, Clemence, Gelino, Christopher R., Gizis, John E., Greenbaum, Alexandra, Martinache, Frantz, N'Diaye, Mamadou, Pope, Benjamin J. S., ..., Ygouf, Marie. 2025. "JWST 1.5 μm and 4.8 μm Photometry of Y Dwarfs ." The Astronomical Journal. 169 (3). https://doi.org/10.3847/1538-3881/adadf9
Article Title

JWST 1.5 μm and 4.8 μm Photometry of Y Dwarfs

ERA Journal ID1048
Article CategoryArticle
AuthorsAlbert, Loic, Leggett, Sandy K., Calissendorff, Per, Vandal, Thomas, Kirkpatrick, J. Davy, Bardalez Gagliuffi, Daniella C., Furio, Matthew, Meyer, Michael, Beichman, Charles A., Burgasser, Adam J., Cushing, Michael C., Faherty, Jacqueline Kelly, Fontanive, Clemence, Gelino, Christopher R., Gizis, John E., Greenbaum, Alexandra, Martinache, Frantz, N'Diaye, Mamadou, Pope, Benjamin J. S., Roellig, Thomas L., Sahlmann, Johannes, Sivaramakrishnan, Anand and Ygouf, Marie
Journal TitleThe Astronomical Journal
Journal Citation169 (3)
Number of Pages10
Year2025
PublisherIOP Publishing
ISSN0004-6256
1538-3881
Digital Object Identifier (DOI)https://doi.org/10.3847/1538-3881/adadf9
Web Address (URL)https://163
AbstractBrown dwarfs lack nuclear fusion and cool with time; the coldest known have an effective temperature below 500 K, and are known as Y dwarfs. We present a James Webb Space Telescope (JWST) photometric data set of Y dwarfs: 23 were imaged in wide-field mode, 20 using NIRCam with the F150W and F480M filters, and three using NIRISS with the F480M filter. We present an F480M versus F150W - F480M color-magnitude diagram for our sample, and other brown dwarfs with F150W and F480M colors synthesized from JWST spectra by S. A. Beiler et al. For one target, WISEA J083011.95+283716.0, its detection in the near-infrared confirms it as one of the reddest Y dwarfs known, with F150W - F480M = 9.62 mag. We provide its updated parallax and proper motion. One of the Beiler et al. Y dwarfs, CWISEP J104756.81+545741.6, is unusually blue, consistent with strong CO absorption seen in its spectrum, which the F480M filter is particularly sensitive to. The strong CO and the kinematics of the object suggest it may be very low mass and young. We update the resolved photometry for the close binary system WISE J033605.05-014350.4 AB, and find that the secondary is almost as cold as WISE 085510.83-071442.5, with Teff less than or similar to 300 K, however the F150W - F480M color is significantly bluer, possibly suggesting the presence of water clouds. Astrometry is measured at the JWST epoch for the sample which is consistent with parallax and proper motion values reported by J. D. Kirkpatrick et al. and F. Marocco et al.
KeywordsStellar atmospheres; Space astrometry; Infrared photometry; Brown dwarfs
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20205101. Astronomical sciences
Byline AffiliationsUniversity of Montreal, Canada
NSF's National Optical Infrared Astronomy Research Laboratory (NOIRLab), United States
University of Michigan, United States
California Institute of Technology (Caltech), United States
Amherst College, United States
American Museum of Natural History, United States
University of Texas at Austin, United States
University of California San Diego, United States
University of Toledo, United States
University of Delaware, United States
Infrared Processing and Analysis Center (IPAC), United States
Côte d’Azur University, France
Centre for Astrophysics
School of Mathematics, Physics and Computing
NASA Ames Research Center, United States
European Space Astronomy Centre, Spain
Space Telescope Science Institute, United States
Johns Hopkins University, United States
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197 candidates and 104 validated planets in K2's first five fields
Crossfield, Ian J., Ciardi, David R., Petigura, Erik A., Sinukoff, Evan, Schlieder, Joshua E., Howard, Andrew W., Beichman, Charles A., Isaacson, Howard, Dressing, Courtney D., Christiansen, Jessie L., Fulton, Benjamin J., Lepine, Sebastien, Weiss, Lauren, Hirsch, Lea, Livingston, John, Baranec, Christoph, Law, Nicholas M., Riddle, Reed, Ziegler, Carl, ..., Defrere, Denis. 2016. "197 candidates and 104 validated planets in K2's first five fields." Astrophysical Journal Supplement Series. 226 (1), pp. 1-20. https://doi.org/10.3847/0067-0049/226/1/7
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
Two small temperate planets transiting nearby M dwarfs in K2 campaigns 0 and 1
Schlieder, Joshua E., Crossfield, Ian J M, Petigura, Erik A., Howard, Andrew W., Aller, Kimberly M., Sinukoff, Evan, Isaacson, Howard T., Fulton, Benjamin J., Ciardi, David R., Bonnefoy, Mickael, Ziegler, Carl, Morton, Timothy D., Lepine, Sebastien, Obermeier, Christian, Liu, Michael C., Bailey, Vanessa P., Baranec, Christoph, Beichman, Charles A., Defrere, Denis, ..., Skemer, Andrew. 2016. "Two small temperate planets transiting nearby M dwarfs in K2 campaigns 0 and 1." The Astrophysical Journal: an international review of astronomy and astronomical physics. 818 (1), pp. 87-101. https://doi.org/10.3847/0004-637X/818/1/87
Two transiting low density sub-Saturns from K2
Petigura, Erik A., Howard, Andrew W., Lopez, Eric D., Deck, Katherine M., Fulton, Benjamin J., Crossfield, Ian J. M., Ciardi, David R., Chiang, Eugene, Lee, Eve J., Isaacson, Howard, Beichman, Charles A., Hansen, Brad M. S., Schlieder, Joshua E. and Sinukoff, Evan. 2016. "Two transiting low density sub-Saturns from K2." The Astrophysical Journal: an international review of astronomy and astronomical physics. 818 (1), pp. 36-46. https://doi.org/10.3847/0004-637X/818/1/36
Campaign 9 of the K2 mission: observational parameters, scientific drivers, and community involvement for a simultaneous space-and ground-based microlensing survey
Henderson, Calen B., Poleski, Radosław, Penny, Matthew, Street, Rachel A., Bennett, David P., Hogg, David W., Gaudi, Scott, Zhu, W., Barclay, T., Barentsen, G., Howell, S. B., Mullally, F., Udalski, A., Szymanski, M. K., Skowron, J., Mroz, P., Kozlowski, S., Wyrzykowski, L., Pietrukowicz, P., ..., Wang, D.. 2016. "Campaign 9 of the K2 mission: observational parameters, scientific drivers, and community involvement for a simultaneous space-and ground-based microlensing survey." Publications of the Astronomical Society of the Pacific. 128 (970). https://doi.org/10.1088/1538-3873/128/970/124401
The palomar transient factory orion project: eclipsing binaries and young stellar objects
van Eyken, Julian C., Ciardi, David R., Rebull, Luisa M., Stauffer, John R., Akeson, Rachel L., Beichman, Charles A., Boden, Andrew F., von Braun, Kaspar, Gelino, Dawn M., Hoard, D. W., Howell, Steve B., Kane, Stephen R., Plavchan, Peter, Ramirez, Solange V., Bloom, Joshua S., Cenko, S. Bradley, Kasliwal, Mansi M., Kulkarni, Shrinivas R., Law, Nicholas M., ..., Surace, Jason A.. 2011. "The palomar transient factory orion project: eclipsing binaries and young stellar objects." The Astronomical Journal. 142 (2), pp. 60-94. https://doi.org/10.1088/0004-6256/142/2/60
Multi-epoch observations of HD 69830: high-resolution spectroscopy and limits to variability
Beichman, C. A., Lisse, C. M., Tanner, A. M., Bryden, G., Akeson, R. L., Ciardi, D. R., Boden, A. F., Dodson-Robinson, S. E., Salyk, C. and Wyatt, M. C.. 2011. "Multi-epoch observations of HD 69830: high-resolution spectroscopy and limits to variability." The Astrophysical Journal: an international review of astronomy and astronomical physics. 743 (1), pp. 85-100. https://doi.org/10.1088/0004-637X/743/1/85
THE PTF orion project: a possible planet transiting a T-Tauri star
van Eyken, Julian C., Ciardi, David R., von Braun, Kaspar, Kane, Stephen R., Plavchan, Peter, Bender, Chad F., Brown, Timothy M., Crepp, Justin R., Fulton, Benjamin J., Howard, Andrew W., Howell, Steve B., Mahadevan, Suvrath, Marcy, Geoffrey W., Shporer, Avi, Szkody, Paula, Akeson, Rachel L., Beichman, Charles A., Boden, Andrew F., Gelino, Dawn M., ..., Surace, Jason A.. 2012. "THE PTF orion project: a possible planet transiting a T-Tauri star." The Astrophysical Journal: an international review of astronomy and astronomical physics. 755 (1), pp. 42-55. https://doi.org/10.1088/0004-637X/755/1/42
Follow-up observations of PTFO 8-8695: a 3 MYR old T Tauri star hosting a Jupiter-mass planetary candidate
Ciardi, David R., van Eyken, Julian C., Barnes, Jason W., Beichman, Charles A., Carey, Sean J., Crockett, Christopher J., Eastman, Jason, Johns-Krull, Christopher M., Howell, Steve B., Kane, Stephen R., McLane, Jacob N., Plavchan, Peter, Prato, L., Stauffer, John, van Belle, Gerard T. and von Braun, Kaspar. 2015. "Follow-up observations of PTFO 8-8695: a 3 MYR old T Tauri star hosting a Jupiter-mass planetary candidate." The Astrophysical Journal: an international review of astronomy and astronomical physics. 809 (1), pp. 42-52. https://doi.org/10.1088/0004-637X/809/1/42
Two transiting earth-size planets near resonance orbiting a nearby cool star
Petigura, Erik A., Schlieder, Joshua E., Crossfield, Ian J M, Howard, Andrew W., Deck, Katherine M., Ciardi, David R., Sinukoff, Evan, Allers, Katelyn N., Best, William M. J., Liu, Michael C., Beichman, Charles A., Isaacson, Howard, Hansen, Brad M. S. and Lepine, Sebastien. 2015. "Two transiting earth-size planets near resonance orbiting a nearby cool star." The Astrophysical Journal: an international review of astronomy and astronomical physics. 811 (2), pp. 102-110. https://doi.org/10.1088/0004-637X/811/2/102
A high-precision near-infrared survey for radial velocity variable low-mass stars using CSHELL and a methane gas cell
Gagne, Jonathan, Plavchan, Peter, Gao, Peter, Anglada-Escude, Guillem, Furlan, Elise, Davison, Cassy, Tanner, Angelle, Henry, Todd J., Riedel, Adric R., Brinkworth, Carolyn, Latham, David, Bottom, Michael, White, Russel, Mills, Sean, Beichman, Chas, Johnson, John A., Ciardi, David R., Wallace, Kent, Mennesson, Bertrand, ..., Catanzarite, Joseph. 2016. "A high-precision near-infrared survey for radial velocity variable low-mass stars using CSHELL and a methane gas cell." The Astrophysical Journal: an international review of astronomy and astronomical physics. 822 (1), pp. 40-63. https://doi.org/10.3847/0004-637X/822/1/40
Spitzer observations of exoplanets discovered with the Kepler K2 mission
Beichman, Charles, Livingston, John, Werner, Michael, Gorjian, Varoujan, Krick, Jessica, Deck, Katherine, Knutson, Heather, Wong, Ian, Petigura, Erik, Christiansen, Jessie, Ciardi, David, Greene, Thomas P., Schlieder, Joshua E., Line, Mike, Crossfield, Ian, Howard, Andrew and Sinukoff, Evan. 2016. "Spitzer observations of exoplanets discovered with the Kepler K2 mission." The Astrophysical Journal: an international review of astronomy and astronomical physics. 822 (1), pp. 39-47. https://doi.org/10.3847/0004-637X/822/1/39
Eleven multiplanet systems from K2 campaigns 1 and 2 and the masses of two hot super-Earths
Sinukoff, Evan, Howard, Andrew W., Petigura, Erik A., Schlieder, Joshua E., Crossfield, Ian J. M., Ciardi, David R., Fulton, Benjamin J., Isaacson, Howard, Aller, Kimberly M., Baranec, Christoph, Beichman, Charles A., Hansen, Brad M S, Knutson, Heather A., Law, Nicholas M., Liu, Michael C., Riddle, Reed and Dressing, Courtney D.. 2016. "Eleven multiplanet systems from K2 campaigns 1 and 2 and the masses of two hot super-Earths." The Astrophysical Journal: an international review of astronomy and astronomical physics. 827 (1), pp. 78-104. https://doi.org/10.3847/0004-637X/827/1/78
Hα Variability in PTFO 8-8695 and the possible direct detection of emission from a 2 million year old evaporating hot Jupiter
Johns-Krull, Christopher M., Prato, Lisa, McLane, Jacob N., Ciardi, David R., van Eyken, Julian C., Chen, Wei, Stauffer, John R., Beichman, Charles A., Frazier, Sarah A., Boden, Andrew F., Morales-Calderon, Maria and Rebull, Luisa M.. 2016. "Hα Variability in PTFO 8-8695 and the possible direct detection of emission from a 2 million year old evaporating hot Jupiter." The Astrophysical Journal: an international review of astronomy and astronomical physics. 830 (1), pp. 14-28. https://doi.org/10.3847/0004-637X/830/1/15
K2 discovers a busy bee: an unusual transiting Neptune found in the beehive cluster
Obermeier, Christian, Henning, Thomas, Schlieder, Joshua E., Crossfield, Ian J. M., Petigura, Erik A., Howard, Andrew W., Sinukoff, Evan, Isaacson, Howard, Ciardi, David R., David, Trevor J., Hillenbrand, Lynne A., Beichman, Charles A., Howell, Steve B., Horch, Elliott, Everett, Mark, Hirsch, Lea, Teske, Johanna, Christiansen, Jessie L., Lepine, Sebastien, ..., Kluge, Matthias. 2016. "K2 discovers a busy bee: an unusual transiting Neptune found in the beehive cluster." The Astronomical Journal. 152 (6), pp. 223-234. https://doi.org/10.3847/1538-3881/152/6/223
The spitzer microlensing program as a probe for globular cluster planets: analysis of OGLE-2015-BLG-0448
Poleski, Radoslaw, Zhu, Wei, Christie, Grant W., Udalski, Andrzej, Gould, Andrew, Bachelet, Etienne, Skottfelt, Jesper, Calchi Novati, Sebastiano, Szymanski, M. K., Soszynski, L., Pietrzynski, G., Wyrzykowski, L., Ulaczyk, K., Pietrukowicz, P., Kozlowski, Szymon, Skowron, J., Mroz, P., Pawlak, M., Beichman, C., ..., Wertz, O.. 2016. "The spitzer microlensing program as a probe for globular cluster planets: analysis of OGLE-2015-BLG-0448." The Astrophysical Journal: an international review of astronomy and astronomical physics. 823 (1). https://doi.org/10.3847/0004-637X/823/1/63
MagAO imaging of long-period objects (MILO). II. A puzzling white dwarf around the sun-like star HD 11112
Rodigas, Timothy J., Bergeron, P., Simon, Amelie, Arriagada, Pamela, Faherty, Jacqueline K., Anglada-Escude, Guillem, Mamajak, Eric E., Weinberger, Alycia, Butler, R. Paul, Males, Jared R., Morzinski, Katie, Close, Laird M., Hinz, Philip M., Bailey, Jeremy, Carter, Brad, Jenkins, James S., Jones, Hugh, O'Toole, Simon, Tinney, C. G., ..., Debes, John. 2016. "MagAO imaging of long-period objects (MILO). II. A puzzling white dwarf around the sun-like star HD 11112." The Astrophysical Journal: an international review of astronomy and astronomical physics. 831 (2). https://doi.org/10.3847/0004-637X/831/2/177
Design and construction of absorption cells for precision radial velocities in the K band using methane isotopologues
Anglada-Escude, Guillem, Plavchan, Peter, Mills, Sean, Gao, Peter, Garcia-Berrios, Edgardo, Lewis, Nathan S., Sung, Keeyoon, Ciardi, David, Beichman, Chas, Brinkworth, Carolyn, Johnson, John, Davison, Cassy, White, Russel and Prato, Lisa. 2012. "Design and construction of absorption cells for precision radial velocities in the K band using methane isotopologues." Publications of the Astronomical Society of the Pacific. 124 (916), pp. 586-597. https://doi.org/10.1086/666489
The NASA exoplanet archive: data and tools for exoplanet research
Akeson, R. L., Chen, X., Ciardi, D., Crane, M., Good, J., Harbut, M., Jackson, E., Kane, S. R., Laity, A. C., Leifer, S., Lynn, M., McElroy, D. L., Papin, M., Plavchan, P., Ramirez, S. V., Rey, R., von Braun, K., Wittman, M., Abajian, M., ..., Zhang, A.. 2013. "The NASA exoplanet archive: data and tools for exoplanet research." Publications of the Astronomical Society of the Pacific. 125 (930), pp. 989-999. https://doi.org/10.1086/672273
A Neptune-sized transiting planet closely orbiting a 5-10-million-year-old star
David, Trevor J., Hillenbrand, Lynne A., Petigura, Erik A., Carpenter, John M., Crossfield, Ian J. M., Hinkley, Sasha, Ciardi, David R., Howard, Andrew W., Isaacson, Howard T., Cody, Ann Marie, Schlieder, Joshua E., Beichman, Charles A. and Barenfeld, Scott A.. 2016. "A Neptune-sized transiting planet closely orbiting a 5-10-million-year-old star ." Nature. 534 (7609), pp. 658-661. https://doi.org/10.1038/nature18293
A disintegrating minor planet transiting a white dwarf
Vanderburg, Andrew, Johnson, John Asher, Rappaport, Saul, Bieryla, Allyson, Irwin, Jonathan, Lewis, John Arban, Kipping, David, Brown, Warren R., Dufour, Patrick, Ciardi, David R., Angus, Ruth, Schaefer, Laura, Latham, David W., Charbonneau, David, Beichman, Charles, Eastman, Jason, McCrady, Nate, Wittenmyer, Robert A. and Wright, Jason T.. 2015. "A disintegrating minor planet transiting a white dwarf ." Nature. 526 (7574), pp. 546-549. https://doi.org/10.1038/nature15527
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