A sub-Neptune transiting the young field star HD 18599 at 40 pc

de Leon, J. P. and Livingston, J. H. and Jenkins, J. S. and Vines, J. I. and Wittenmyer, R. A. and Clark, J. T. and Winn, J. I. M. and Addison, B. and Ballard, S. and Bayliss, D. and Beichman, C. and Benneke, B. and Berardo, D. A. and Bowler, B. P. and Brown, T. and Bryant, E. M. and Christiansen, J. and Ciardi, D. and Collins, K. A. and Collins, K. I. and Crossfield, I.J.M. and Deming, D. and Dragomir, D. and Dressing, C. D. and Fukui, A. and Gan, T. and Giacalone, S. and Gill, S. and Gorjian, V. and González Alvarez, E. and Hesse, K. and Horner, J. and Howell, S. B. and Jenkins, J. M. and Kane, S. R. and Kendall, A. and Kielkopf, J. F. and Kreidberg, L. and Latham, D. W. and Liu, H. and Lund, M. B. and Matson, R. and Matthews, E. and Mengel, M. W. and Morales, F. and Mori, M. and Narita, N. and Nishiumi, T. and Okumura, J. and Plavchan, P. and Quinn, S. and Rabus, M. and Ricker, G. and Rudat, A. and Schlieder, J. and Schwarz, R. P. and Seager, S. and Shporer, A. and Smith, A. M. S. and Stassun, K. and Tamura, M. and Tan, T. G. and Tinney, C. and Vanderspek, R. and Werner, M. W. and West, R. G. and Wright, D. and Zhang, H. and Zhou, G. (2023) A sub-Neptune transiting the young field star HD 18599 at 40 pc. Monthly Notices of the Royal Astronomical Society, 522 (1), pp. 750-766. Oxford University Press. doi: 10.1093/mnras/stad894. ISSN 0035-8711.

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Abstract

Transiting exoplanets orbiting young nearby stars are ideal laboratories for testing theories of planet formation and evolution. However, to date only a handful of stars with age <1 Gyr have been found to host transiting exoplanets. Here we present the discovery and validation of a sub-Neptune around HD 18599 , a young (300 Myr), nearby (d = 40 pc) K star. We validate the transiting planet candidate as a bona fide planet using data from the TESS , Spitzer , and Gaia missions, ground-based photometry from IRSF , LCO , PEST , and NGTS , speckle imaging from Gemini, and spectroscopy from CHIRON , NRES , FEROS , and MINERVA-Australis . The planet has an orbital period of 4.13 d , and a radius of 2.7 R⊕ . The RV data yields a 3-σ mass upper limit of 30.5 M⊕ which is explained by either a massive companion or the large observed jitter typical for a young star. The brightness of the host star (V~9 mag) makes it conducive to detailed characterization via Doppler mass measurement which will provide a rare view into the interior structure of young planets.

Item URL in elib:

https://elib.dlr.de/194937/

Document Type:

Article

Title:

A sub-Neptune transiting the young field star HD 18599 at 40 pc

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
de Leon, J. P.	Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan	UNSPECIFIED	UNSPECIFIED
Livingston, J. H.	Department of Astronomy, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan	UNSPECIFIED	UNSPECIFIED
Jenkins, J. S.	Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejército 441, Santiago, Chile Centro de Astrofísica y Tecnologías Afines (CATA), Casilla 36-D, Santiago, Chile	UNSPECIFIED	UNSPECIFIED
Vines, J. I.	Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile	UNSPECIFIED	UNSPECIFIED
Wittenmyer, R. A.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Clark, J. T.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Winn, J. I. M.	Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA	UNSPECIFIED	UNSPECIFIED
Addison, B.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Ballard, S.	Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611, USA	UNSPECIFIED	UNSPECIFIED
Bayliss, D.	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Beichman, C.	NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA 91106, USA	UNSPECIFIED	UNSPECIFIED
Benneke, B.	Department of Physics and Institute for Research on Exoplanets, Universit' e de Montr' eal, Montr' eal, QC, PO Box 6128, Canada	UNSPECIFIED	UNSPECIFIED
Berardo, D. A.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Bowler, B. P.	Department of Astronomy, The University of Texas at Austin, TX 78712, USA	UNSPECIFIED	UNSPECIFIED
Brown, T.	CASA, University of Colorado, Boulder, CO 80309, USA; Las Cumbres Observatory, Goleta, CA 93117, USA	UNSPECIFIED	UNSPECIFIED
Bryant, E. M.	Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK	UNSPECIFIED	UNSPECIFIED
Christiansen, J.	NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA 91106, USA	UNSPECIFIED	UNSPECIFIED
Ciardi, D.	NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA 91106, USA	UNSPECIFIED	UNSPECIFIED
Collins, K. A.	Center for Astrophysics \| Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA	UNSPECIFIED	UNSPECIFIED
Collins, K. I.	George Mason University, 4400 University Drive, Fairfax, VA, 22030, USA	UNSPECIFIED	UNSPECIFIED
Crossfield, I.J.M.	Department of Physics and Astronomy, University of Kansas,Lawrence, KS, USA	UNSPECIFIED	UNSPECIFIED
Deming, D.	NASA Astrobiology Institute's Virtual Planetary Laboratory, Box 351580 Seattle, WA 98195, USA; Department of Astronomy, University of Maryland, College Park, MD 20742, USA	UNSPECIFIED	UNSPECIFIED
Dragomir, D.	Department of Physics and Astronomy, University of New Mexico, 1919 Lomas Blvd NE, Albuquerque, NM 87131, USA	UNSPECIFIED	UNSPECIFIED
Dressing, C. D.	Department of Astronomy, University of California, Berkeley, Berkeley, CA 94720, USA	UNSPECIFIED	UNSPECIFIED
Fukui, A.	Komaba Institute for Science, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan; Instituto de Astrof' isica de Canarias, V' ia L' actea s/n, E-38205 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Gan, T.	Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University, Beijing 100084, China	UNSPECIFIED	UNSPECIFIED
Giacalone, S.	Department of Astronomy, University of California, Berkeley, Berkeley, CA 94720, USA	UNSPECIFIED	UNSPECIFIED
Gill, S.	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK	UNSPECIFIED	UNSPECIFIED
Gorjian, V.	NASA Jet Propulsion Laboratory, Pasadena, CA 91109, USA	UNSPECIFIED	UNSPECIFIED
González Alvarez, E.	Centro de Astrobiolog' ia (CSIC-INTA), Carretera de Ajalvir km 4, Torrej' on de Ardoz, E-28850 Madrid, Spain	UNSPECIFIED	UNSPECIFIED
Hesse, K.	Department of Astronomy, Wesleyan University, Middletown, CT 06459, USA	UNSPECIFIED	UNSPECIFIED
Horner, J.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Howell, S. B.	NASA Ames Research Center, Moffett Field, CA, 94035, USA	UNSPECIFIED	UNSPECIFIED
Jenkins, J. M.	NASA Ames Research Center, Moffett Field, CA, 94035, USA	UNSPECIFIED	UNSPECIFIED
Kane, S. R.	Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA	UNSPECIFIED	UNSPECIFIED
Kendall, A.	School of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK	UNSPECIFIED	UNSPECIFIED
Kielkopf, J. F.	Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292, USA	UNSPECIFIED	UNSPECIFIED
Kreidberg, L.	Center for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA	UNSPECIFIED	UNSPECIFIED
Latham, D. W.	Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA	UNSPECIFIED	UNSPECIFIED
Liu, H.	School of Astronomy and Space Science, Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210046, Jiangsu, China	UNSPECIFIED	UNSPECIFIED
Lund, M. B.	NASA Exoplanet Science Institute, California Institute of Technology, Pasadena, CA 91106, USA	UNSPECIFIED	UNSPECIFIED
Matson, R.	NASA Ames Research Center, Moffett Field, CA 94035, USA	UNSPECIFIED	UNSPECIFIED
Matthews, E.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Observatoire de Gen' eve, Chemin Pegasi 51, CH-1290 Versoix, Switzerland	UNSPECIFIED	UNSPECIFIED
Mengel, M. W.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Morales, F.	NASA Jet Propulsion Laboratory, Pasadena, CA 91109, USA	UNSPECIFIED	UNSPECIFIED
Mori, M.	Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan	UNSPECIFIED	UNSPECIFIED
Narita, N.	Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan; National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan; Instituto de Astrofisica de Canarias (IAC), 38205, La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Nishiumi, T.	Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, 2-21-1, Osawa, Mitaka, Tokyo 181-8588, Japan; Department of Multi-Disciplinary Sciences, Graduate	UNSPECIFIED	UNSPECIFIED
Okumura, J.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Plavchan, P.	Department of Physics and Astronomy, George Mason University,4400 University Drive, Fairfax, VA 22030, USA	UNSPECIFIED	UNSPECIFIED
Quinn, S.	Center for Astrophysics, Harvard & Smithsonian, 60 Garden Street, Cambridge, MA, 02138, USA	UNSPECIFIED	UNSPECIFIED
Rabus, M.	Las Cumbres Observatory Global Telescope, 6740 Cortona Dr, Suite 102, Goleta, CA 93111, USA; Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA; Departamento de Matem' atica y F' isica Aplicadas, Universidad Cat' olica de l	UNSPECIFIED	UNSPECIFIED
Ricker, G.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Rudat, A.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Schlieder, J.	NASA Goddard Space Flight Center, 8800 Greenbelt Rd, Greenbelt, MD 20771, USA	UNSPECIFIED	UNSPECIFIED
Schwarz, R. P.	Center for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA	UNSPECIFIED	UNSPECIFIED
Seager, S.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 0	UNSPECIFIED	UNSPECIFIED
Shporer, A.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Smith, A. M. S.	UNSPECIFIED	https://orcid.org/0000-0002-2386-4341	UNSPECIFIED
Stassun, K.	Department of Physics and Astronomy, Vanderbilt University, VU Station 1807, Nashville, TN 37235, USA; Department of Physics, Fisk University, Nashville, TN 37208, USA	UNSPECIFIED	UNSPECIFIED
Tamura, M.	Department of Astronomy, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Astrobiology Center, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka	UNSPECIFIED	UNSPECIFIED
Tan, T. G.	Perth Exoplanet Survey Telescope, Perth, Western Australia	UNSPECIFIED	UNSPECIFIED
Tinney, C.	Exoplanetary Science at UNSW, School of Physics, UNSW Sydney, NSW 2052, Australia	UNSPECIFIED	UNSPECIFIED
Vanderspek, R.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA	UNSPECIFIED	UNSPECIFIED
Werner, M. W.	NASA Jet Propulsion Laboratory, Pasadena, CA 91109, USA	UNSPECIFIED	UNSPECIFIED
West, R. G.	Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL; Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL	UNSPECIFIED	UNSPECIFIED
Wright, D.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia	UNSPECIFIED	UNSPECIFIED
Zhang, H.	Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China	UNSPECIFIED	UNSPECIFIED
Zhou, G.	University of Southern Queensland, Centre for Astrophysics, West Street, Toowoomba, QLD 4350, Australia; Center for Astrophysics, Harvard and Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA	UNSPECIFIED	UNSPECIFIED

Date:

27 March 2023

Journal or Publication Title:

Monthly Notices of the Royal Astronomical Society

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

522

DOI:

10.1093/mnras/stad894

Page Range:

pp. 750-766

Publisher:

Oxford University Press

ISSN:

0035-8711

Status:

Published

Keywords:

techniques: radial velocities, techniques: spectroscopic, planets and satellites: detection, stars: individual: TOI-179, Astrophysics - Earth and Planetary Astrophysics

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Space

HGF - Program Themes:

Space Exploration

DLR - Research area:

Raumfahrt

DLR - Program:

R EW - Space Exploration

DLR - Research theme (Project):

R - Project PLATO - PMC and Science

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Planetary Research > Extrasolar Planets and Atmospheres

Deposited By:

Smith, Dr Alexis M S

Deposited On:

04 May 2023 10:41

Last Modified:

28 Nov 2023 13:16

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