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

J. P. de Leon; J. H. Livingston; J. S. Jenkins; J. I. Vines; R. A. Wittenmyer; J. T. Clark; J. I.M. Winn; B. Addison; S. Ballard; D. Bayliss; C. Beichman; B. Benneke; D. A. Berardo; B. P. Bowler; T. Brown; E. M. Bryant; J. Christiansen; D. Ciardi; K. A. Collins; K. I. Collins; I. Crossfield; D. Deming; D. Dragomir; C. D. Dressing; A. Fukui; T. Gan; S. Giacalone; S. Gill; V. Gorjian; E. González Alvarez; K. Hesse; J. Horner; S. B. Howell; J. M. Jenkins; S. R. Kane; A. Kendall; J. F. Kielkopf; L. Kreidberg; D. W. Latham; H. Liu; M. B. Lund; R. Matson; E. Matthews; M. W. Mengel; F. Morales; M. Mori; N. Narita; T. Nishiumi; J. Okumura; P. Plavchan; S. Quinn; M. Rabus; G. Ricker; A. Rudat; J. Schlieder; R. P. Schwarz; S. Seager; A. Shporer; A. M.S. Smith; K. Stassun; M. Tamura; T. G. Tan; C. Tinney; R. Vanderspek; M. W. Werner; R. G. West; D. Wright; H. Zhang; G. Zhou

doi:10.1093/mnras/stad894

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

J. P. de Leon, J. H. Livingston, J. S. Jenkins, J. I. Vines, R. A. Wittenmyer, J. T. Clark, J. I.M. Winn, B. Addison, S. Ballard, D. Bayliss, C. Beichman, B. Benneke, D. A. Berardo, B. P. Bowler, T. Brown, E. M. Bryant, J. Christiansen, D. Ciardi, K. A. Collins, K. I. CollinsI. Crossfield, D. Deming, D. Dragomir, C. D. Dressing, A. Fukui, T. Gan, S. Giacalone, S. Gill, V. Gorjian, E. González Alvarez, K. Hesse, J. Horner, S. B. Howell, J. M. Jenkins, S. R. Kane, A. Kendall, J. F. Kielkopf, L. Kreidberg, D. W. Latham, H. Liu, M. B. Lund, R. Matson, E. Matthews, M. W. Mengel, F. Morales, M. Mori, N. Narita, T. Nishiumi, J. Okumura, P. Plavchan, S. Quinn, M. Rabus, G. Ricker, A. Rudat, J. Schlieder, R. P. Schwarz, S. Seager, A. Shporer, A. M.S. Smith, K. Stassun, M. Tamura, T. G. Tan, C. Tinney, R. Vanderspek, M. W. Werner, R. G. West, D. Wright, H. Zhang, G. Zhou

Astrophysical Sciences

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3 Scopus citations

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.

Original language	English (US)
Pages (from-to)	750-766
Number of pages	17
Journal	Monthly Notices of the Royal Astronomical Society
Volume	522
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stad894
State	Published - Jun 1 2023

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

planets and satellites: detection
stars: individual: TOI-179
techniques: radial velocities
techniques: spectroscopic

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10.1093/mnras/stad894

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de Leon, J. P., Livingston, J. H., Jenkins, J. S., Vines, J. I., Wittenmyer, R. A., Clark, J. T., Winn, J. I. M., Addison, B., Ballard, S., Bayliss, D., Beichman, C., Benneke, B., Berardo, D. A., Bowler, B. P., Brown, T., Bryant, E. M., Christiansen, J., Ciardi, D., Collins, K. A., ... 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), 750-766. https://doi.org/10.1093/mnras/stad894

@article{657164f9d3bf43f5aeb8c1c2ee6e3e62,

title = "A sub-Neptune transiting the young field star HD 18599 at 40 pc",

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.",

keywords = "planets and satellites: detection, stars: individual: TOI-179, techniques: radial velocities, techniques: spectroscopic",

author = "{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 B. Addison and S. Ballard and D. Bayliss and C. Beichman and B. Benneke and Berardo, {D. A.} and Bowler, {B. P.} and T. Brown and Bryant, {E. M.} and J. Christiansen and D. Ciardi and Collins, {K. A.} and Collins, {K. I.} and I. Crossfield and D. Deming and D. Dragomir and Dressing, {C. D.} and A. Fukui and T. Gan and S. Giacalone and S. Gill and V. Gorjian and Alvarez, {E. Gonz{\'a}lez} and K. Hesse and J. Horner and Howell, {S. B.} and Jenkins, {J. M.} and Kane, {S. R.} and A. Kendall and Kielkopf, {J. F.} and L. Kreidberg and Latham, {D. W.} and H. Liu and Lund, {M. B.} and R. Matson and E. Matthews and Mengel, {M. W.} and F. Morales and M. Mori and N. Narita and T. Nishiumi and J. Okumura and P. Plavchan and S. Quinn and M. Rabus and G. Ricker and A. Rudat and J. Schlieder and Schwarz, {R. P.} and S. Seager and A. Shporer and Smith, {A. M.S.} and K. Stassun and M. Tamura and Tan, {T. G.} and C. Tinney and R. Vanderspek and Werner, {M. W.} and West, {R. G.} and D. Wright and H. Zhang and G. Zhou",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s).",

year = "2023",

month = jun,

day = "1",

doi = "10.1093/mnras/stad894",

language = "English (US)",

volume = "522",

pages = "750--766",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

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de Leon, JP, Livingston, JH, Jenkins, JS, Vines, JI, Wittenmyer, RA, Clark, JT, Winn, JIM, Addison, B, Ballard, S, Bayliss, D, Beichman, C, Benneke, B, Berardo, DA, Bowler, BP, Brown, T, Bryant, EM, Christiansen, J, Ciardi, D, Collins, KA, Collins, KI, Crossfield, I, Deming, D, Dragomir, D, Dressing, CD, Fukui, A, Gan, T, Giacalone, S, Gill, S, Gorjian, V, Alvarez, EG, Hesse, K, Horner, J, Howell, SB, Jenkins, JM, Kane, SR, Kendall, A, Kielkopf, JF, Kreidberg, L, Latham, DW, Liu, H, Lund, MB, Matson, R, Matthews, E, Mengel, MW, Morales, F, Mori, M, Narita, N, Nishiumi, T, Okumura, J, Plavchan, P, Quinn, S, Rabus, M, Ricker, G, Rudat, A, Schlieder, J, Schwarz, RP, Seager, S, Shporer, A, Smith, AMS, Stassun, K, Tamura, M, Tan, TG, Tinney, C, Vanderspek, R, Werner, MW, West, RG, Wright, D, Zhang, H & Zhou, G 2023, 'A sub-Neptune transiting the young field star HD 18599 at 40 pc', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 1, pp. 750-766. https://doi.org/10.1093/mnras/stad894

TY - JOUR

T1 - A sub-Neptune transiting the young field star HD 18599 at 40 pc

AU - de Leon, J. P.

AU - Livingston, J. H.

AU - Jenkins, J. S.

AU - Vines, J. I.

AU - Wittenmyer, R. A.

AU - Clark, J. T.

AU - Winn, J. I.M.

AU - Addison, B.

AU - Ballard, S.

AU - Bayliss, D.

AU - Beichman, C.

AU - Benneke, B.

AU - Berardo, D. A.

AU - Bowler, B. P.

AU - Brown, T.

AU - Bryant, E. M.

AU - Christiansen, J.

AU - Ciardi, D.

AU - Collins, K. A.

AU - Collins, K. I.

AU - Crossfield, I.

AU - Deming, D.

AU - Dragomir, D.

AU - Dressing, C. D.

AU - Fukui, A.

AU - Gan, T.

AU - Giacalone, S.

AU - Gill, S.

AU - Gorjian, V.

AU - Alvarez, E. González

AU - Hesse, K.

AU - Horner, J.

AU - Howell, S. B.

AU - Jenkins, J. M.

AU - Kane, S. R.

AU - Kendall, A.

AU - Kielkopf, J. F.

AU - Kreidberg, L.

AU - Latham, D. W.

AU - Liu, H.

AU - Lund, M. B.

AU - Matson, R.

AU - Matthews, E.

AU - Mengel, M. W.

AU - Morales, F.

AU - Mori, M.

AU - Narita, N.

AU - Nishiumi, T.

AU - Okumura, J.

AU - Plavchan, P.

AU - Quinn, S.

AU - Rabus, M.

AU - Ricker, G.

AU - Rudat, A.

AU - Schlieder, J.

AU - Schwarz, R. P.

AU - Seager, S.

AU - Shporer, A.

AU - Smith, A. M.S.

AU - Stassun, K.

AU - Tamura, M.

AU - Tan, T. G.

AU - Tinney, C.

AU - Vanderspek, R.

AU - Werner, M. W.

AU - West, R. G.

AU - Wright, D.

AU - Zhang, H.

AU - Zhou, G.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - 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.

AB - 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.

KW - planets and satellites: detection

KW - stars: individual: TOI-179

KW - techniques: radial velocities

KW - techniques: spectroscopic

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UR - http://www.scopus.com/inward/citedby.url?scp=85160438647&partnerID=8YFLogxK

U2 - 10.1093/mnras/stad894

DO - 10.1093/mnras/stad894

M3 - Article

AN - SCOPUS:85160438647

SN - 0035-8711

VL - 522

SP - 750

EP - 766

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

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

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