An Ultra-Hot Neptune in the Neptune desert
| Autor: | Todd C. Klaus, Jose I. Vines, Ruth Titz-Weider, Motohide Tamura, Jessie L. Christiansen, Samuel N. Quinn, M. G. Soto, J. Villasenor, Pablo Rojas, George R. Ricker, Simon R. Walker, Maximiliano Moyano, Nicolás T. Kurtovic, Sara Seager, Sean McCauliff, Maximilian N. Günther, Andrés Jordán, Juan Cabrera, Pascal Torres, Michael R. Goad, Jerome de Leon, Giovanni Isopi, David R. Ciardi, Daniel Bayliss, K. I. Collins, Peter J. Wheatley, Jack J. Lissauer, Norio Narita, David W. Latham, François Bouchy, Sarah L. Casewell, Oliver Turner, Mayuko Mori, Andrea Ercolino, Cristobal Petrovich, Richard G. West, E. Foxell, Claudia Belardi, Philipp Eigmüller, James McCormac, Tom Louden, Eric D. Lopez, Liam Raynard, Benjamin F. Cooke, Edward Gillen, George W. King, Allyson Bieryla, Karen A. Collins, Matias Diaz, Heike Rauer, David J. Armstrong, Jack S. Acton, James A. G. Jackman, Don Pollacco, Anders Erikson, Néstor Espinoza, Michael Vezie, Samuel Gill, Nicholas M. Law, Carl Ziegler, Jon M. Jenkins, Edward M. Bryant, Rafael Brahm, Alexis M. S. Smith, Charles Beichman, Boris T. Gänsicke, Roland Vanderspek, Andrew W. Mann, Taku Nishiumi, Pía Cortés-Zuleta, Didier Queloz, Rosanna H. Tilbrook, Matthew J. Hooton, Louise D. Nielsen, Joshua N. Winn, Christopher J. Burke, Alexander Chaushev, Matthew R. Burleigh, Enric Palle, James S. Jenkins, Christopher E. Henze, Stéphane Udry, F. Mallia, Christopher A. Watson |
|---|---|
| Přispěvatelé: | Jenkins, JS [0000-0003-2733-8725], Espinoza, N [0000-0001-9513-1449], Brahm, R [0000-0002-9158-7315], Cortés-Zuleta, P [0000-0002-6174-4666], Wheatley, PJ [0000-0003-1452-2240], Winn, JN [0000-0002-4265-047X], Seager, S [0000-0002-6892-6948], Jenkins, JM [0000-0002-4715-9460], Bieryla, A [0000-0001-6637-5401], Christiansen, JL [0000-0002-8035-4778], Mori, M [0000-0003-1368-6593], Narita, N [0000-0001-8511-2981], Nishiumi, T [0000-0003-1510-8981], Tamura, M [0000-0002-6510-0681], Lissauer, JJ [0000-0001-6513-1659], Collins, KA [0000-0001-6588-9574], Collins, KI [0000-0003-2781-3207], Armstrong, DJ [0000-0002-5080-4117], Bayliss, D [0000-0001-6023-1335], Cabrera, J [0000-0001-6653-5487], Casewell, SL [0000-0003-2478-0120], Eigmüller, P [0000-0003-4096-0594], Günther, MN [0000-0002-3164-9086], Hooton, MJ [0000-0003-0030-332X], Queloz, D [0000-0002-3012-0316], Smith, AMS [0000-0002-2386-4341], Udry, S [0000-0001-7576-6236], Watson, CA [0000-0002-9718-3266], West, RG [0000-0001-6604-5533], Apollo - University of Cambridge Repository |
| Rok vydání: | 2020 |
| Předmět: |
Extrasolare Planeten und Atmosphären
Earth and Planetary Astrophysics (astro-ph.EP) astro-ph.SR 010504 meteorology & atmospheric sciences Leitungsbereich PF Library science FOS: Physical sciences Astronomy and Astrophysics Northern ireland 01 natural sciences Astrophysics - Solar and Stellar Astrophysics 13. Climate action Political science 0103 physical sciences astro-ph.EP Astrophysics::Solar and Stellar Astrophysics Christian ministry Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Research center Solar and Stellar Astrophysics (astro-ph.SR) 0105 earth and related environmental sciences QB Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Jenkins, J S, Díaz, M R, Kurtovic, N T, Espinoza, N, Vines, J I, Rojas, P A P, Brahm, R, Torres, P, Cortés-Zuleta, P, Soto, M G, Lopez, E D, King, G W, Wheatley, P J, Winn, J N, Ciardi, D R, Ricker, G, Vanderspek, R, Latham, D W, Seager, S, Jenkins, J M, Beichman, C A, Bieryla, A, Burke, C J, Christiansen, J L, Henze, C E, Klaus, T C, McCauliff, S, Mori, M, Narita, N, Nishiumi, T, Tamura, M, Leon, J P D, Quinn, S N, Villaseñor, J N, Vezie, M, Lissauer, J J, Collins, K A, Collins, K I, Isopi, G, Mallia, F, Ercolino, A, Petrovich, C, Jordán, A, Acton, J S, Armstrong, D J, Bayliss, D, Bouchy, F, Claudia~Belardi, Bryant, E M, Burleigh, M R, Cabrera, J, Casewell, S L, Chaushev, A, Cooke, B F, Eigmüller, P, Erikson, A, Foxell, E, Gänsicke, B T, Gill, S, Gillen, E, Günther, M N, Goad, M R, Hooton, M J, Jackman, J A G, Louden, T, McCormac, J, Moyano, M, Nielsen, L D, Pollacco, D, Queloz, D, Rauer, H, Raynard, L, Smith, A M S, Tilbrook, R H, Titz-Weider, R, Turner, O, Udry, S, Walker, S R, Watson, C A, West, R G, Palle, E, Ziegler, C, Law, N & Mann, A W 2020, ' An Ultra-Hot Neptune in the Neptune desert ', Nature Astronomy . https://doi.org/10.1038/s41550-020-1142-z |
| ISSN: | 2397-3366 |
| DOI: | 10.48550/arxiv.2009.12832 |
| Popis: | About one out of 200 Sun-like stars has a planet with an orbital period shorter than one day: an ultra-short-period planet (Sanchis-ojeda et al. 2014; Winn et al. 2018). All of the previously known ultra-short-period planets are either hot Jupiters, with sizes above 10 Earth radii (Re), or apparently rocky planets smaller than 2 Re. Such lack of planets of intermediate size (the "hot Neptune desert") has been interpreted as the inability of low-mass planets to retain any hydrogen/helium (H/He) envelope in the face of strong stellar irradiation. Here, we report the discovery of an ultra-short-period planet with a radius of 4.6 Re and a mass of 29 Me, firmly in the hot Neptune desert. Data from the Transiting Exoplanet Survey Satellite (Ricker et al. 2015) revealed transits of the bright Sun-like star \starname\, every 0.79 days. The planet's mean density is similar to that of Neptune, and according to thermal evolution models, it has a H/He-rich envelope constituting 9.0^(+2.7)_(-2.9)% of the total mass. With an equilibrium temperature around 2000 K, it is unclear how this "ultra-hot Neptune" managed to retain such an envelope. Follow-up observations of the planet's atmosphere to better understand its origin and physical nature will be facilitated by the star's brightness (Vmag=9.8). Comment: 26 pages, 10 figures, 3 tables. Published in Nature Astronomy (21/09/2020) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink