A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS

L. D. Nielsen; F. Bouchy; O. Turner; H. Giles; A. Suárez Mascareño; C. Lovis; M. Marmier; F. Pepe; D. Ségransan; S. Udry; J. F. Otegi; G. Ottoni; M. Stalport; G. Ricker; R. Vanderspek; D. W. Latham; S. Seager; J. N. Winn; J. M. Jenkins; S. R. Kane; R. A. Wittenmyer; B. Bowler; I. Crossfield; J. Horner; J. Kielkopf; T. Morton; P. Plavchan; C. G. Tinney; Hui Zhang; D. J. Wright; M. W. Mengel; J. T. Clark; J. Okumura; B. Addison; D. A. Caldwell; S. M. Cartwright; K. A. Collins; J. Francis; N. Guerrero; C. X. Huang; E. C. Matthews; J. Pepper; M. Rose; J. Villaseñor; B. Wohler; K. Stassun; S. Howell; D. Ciardi; E. Gonzales; R. Matson; C. Beichman; J. Schlieder

doi:10.1051/0004-6361/201834577

A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS

L. D. Nielsen, F. Bouchy, O. Turner, H. Giles, A. Suárez Mascareño, C. Lovis, M. Marmier, F. Pepe, D. Ségransan, S. Udry, J. F. Otegi, G. Ottoni, M. Stalport, G. Ricker, R. Vanderspek, D. W. Latham, S. Seager, J. N. Winn, J. M. Jenkins, S. R. KaneR. A. Wittenmyer, B. Bowler, I. Crossfield, J. Horner, J. Kielkopf, T. Morton, P. Plavchan, C. G. Tinney, Hui Zhang, D. J. Wright, M. W. Mengel, J. T. Clark, J. Okumura, B. Addison, D. A. Caldwell, S. M. Cartwright, K. A. Collins, J. Francis, N. Guerrero, C. X. Huang, E. C. Matthews, J. Pepper, M. Rose, J. Villaseñor, B. Wohler, K. Stassun, S. Howell, D. Ciardi, E. Gonzales, R. Matson, C. Beichman, J. Schlieder

Astrophysical Sciences

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Abstract

The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant planet in an 11.54-day eccentric orbit around a bright (V = 7.9) G-type subgiant. We estimate both host star and planetary parameters consistently using EXOFASTv2 based on TESS time-series photometry of transits and radial velocity measurements with CORALIE and MINERVA-Australis. We also present high angular resolution imaging with NaCo to rule out any nearby eclipsing binaries. We find that HD 1397b is a Jovian planet, with a mass of 0.415 ± 0.020 M_J and a radius of 1.026 ± 0.026 R_J. Characterising giant planets in short-period eccentric orbits, such as HD 1397b, is important for understanding and testing theories for the formation and migration of giant planets as well as planet-star interactions.

Original language	English (US)
Article number	A100
Journal	Astronomy and Astrophysics
Volume	623
DOIs	https://doi.org/10.1051/0004-6361/201834577
State	Published - Mar 1 2019

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Planets and satellites: detection
Planets and satellites: individual: 394137592
Planets and satellites: individual: HD 1397b
Planets and satellites: individual: TOI-120

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10.1051/0004-6361/201834577

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Nielsen, L. D., Bouchy, F., Turner, O., Giles, H., Suárez Mascareño, A., Lovis, C., Marmier, M., Pepe, F., Ségransan, D., Udry, S., Otegi, J. F., Ottoni, G., Stalport, 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, 623, Article A100. https://doi.org/10.1051/0004-6361/201834577

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title = "A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS",

abstract = "The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant planet in an 11.54-day eccentric orbit around a bright (V = 7.9) G-type subgiant. We estimate both host star and planetary parameters consistently using EXOFASTv2 based on TESS time-series photometry of transits and radial velocity measurements with CORALIE and MINERVA-Australis. We also present high angular resolution imaging with NaCo to rule out any nearby eclipsing binaries. We find that HD 1397b is a Jovian planet, with a mass of 0.415 ± 0.020 MJ and a radius of 1.026 ± 0.026 RJ. Characterising giant planets in short-period eccentric orbits, such as HD 1397b, is important for understanding and testing theories for the formation and migration of giant planets as well as planet-star interactions.",

keywords = "Planets and satellites: detection, Planets and satellites: individual: 394137592, Planets and satellites: individual: HD 1397b, Planets and satellites: individual: TOI-120",

author = "Nielsen, {L. D.} and F. Bouchy and O. Turner and H. Giles and {Su{\'a}rez Mascare{\~n}o}, A. and C. Lovis and M. Marmier and F. Pepe and D. S{\'e}gransan and S. Udry and Otegi, {J. F.} and G. Ottoni and M. Stalport and G. Ricker and R. Vanderspek and Latham, {D. W.} and S. Seager and Winn, {J. N.} and Jenkins, {J. M.} and Kane, {S. R.} and Wittenmyer, {R. A.} and B. Bowler and I. Crossfield and J. Horner and J. Kielkopf and T. Morton and P. Plavchan and Tinney, {C. G.} and Hui Zhang and Wright, {D. J.} and Mengel, {M. W.} and Clark, {J. T.} and J. Okumura and B. Addison and Caldwell, {D. A.} and Cartwright, {S. M.} and Collins, {K. A.} and J. Francis and N. Guerrero and Huang, {C. X.} and Matthews, {E. C.} and J. Pepper and M. Rose and J. Villase{\~n}or and B. Wohler and K. Stassun and S. Howell and D. Ciardi and E. Gonzales and R. Matson and C. Beichman and J. Schlieder",

note = "Publisher Copyright: {\textcopyright} 2019 ESO.",

year = "2019",

month = mar,

day = "1",

doi = "10.1051/0004-6361/201834577",

language = "English (US)",

volume = "623",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

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Nielsen, LD, Bouchy, F, Turner, O, Giles, H, Suárez Mascareño, A, Lovis, C, Marmier, M, Pepe, F, Ségransan, D, Udry, S, Otegi, JF, Ottoni, G, Stalport, M, Ricker, G, Vanderspek, R, Latham, DW, Seager, S, Winn, JN, Jenkins, JM, Kane, SR, Wittenmyer, RA, Bowler, B, Crossfield, I, Horner, J, Kielkopf, J, Morton, T, Plavchan, P, Tinney, CG, Zhang, H, Wright, DJ, Mengel, MW, Clark, JT, Okumura, J, Addison, B, Caldwell, DA, Cartwright, SM, Collins, KA, Francis, J, Guerrero, N, Huang, CX, Matthews, EC, Pepper, J, Rose, M, Villaseñor, J, Wohler, B, Stassun, K, Howell, S, Ciardi, D, Gonzales, E, Matson, R, Beichman, C & Schlieder, J 2019, 'A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS', Astronomy and Astrophysics, vol. 623, A100. https://doi.org/10.1051/0004-6361/201834577

TY - JOUR

T1 - A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS

AU - Nielsen, L. D.

AU - Bouchy, F.

AU - Turner, O.

AU - Giles, H.

AU - Suárez Mascareño, A.

AU - Lovis, C.

AU - Marmier, M.

AU - Pepe, F.

AU - Ségransan, D.

AU - Udry, S.

AU - Otegi, J. F.

AU - Ottoni, G.

AU - Stalport, M.

AU - Ricker, G.

AU - Vanderspek, R.

AU - Latham, D. W.

AU - Seager, S.

AU - Winn, J. N.

AU - Jenkins, J. M.

AU - Kane, S. R.

AU - Wittenmyer, R. A.

AU - Bowler, B.

AU - Crossfield, I.

AU - Horner, J.

AU - Kielkopf, J.

AU - Morton, T.

AU - Plavchan, P.

AU - Tinney, C. G.

AU - Zhang, Hui

AU - Wright, D. J.

AU - Mengel, M. W.

AU - Clark, J. T.

AU - Okumura, J.

AU - Addison, B.

AU - Caldwell, D. A.

AU - Cartwright, S. M.

AU - Collins, K. A.

AU - Francis, J.

AU - Guerrero, N.

AU - Huang, C. X.

AU - Matthews, E. C.

AU - Pepper, J.

AU - Rose, M.

AU - Villaseñor, J.

AU - Wohler, B.

AU - Stassun, K.

AU - Howell, S.

AU - Ciardi, D.

AU - Gonzales, E.

AU - Matson, R.

AU - Beichman, C.

AU - Schlieder, J.

PY - 2019/3/1

Y1 - 2019/3/1

N2 - The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant planet in an 11.54-day eccentric orbit around a bright (V = 7.9) G-type subgiant. We estimate both host star and planetary parameters consistently using EXOFASTv2 based on TESS time-series photometry of transits and radial velocity measurements with CORALIE and MINERVA-Australis. We also present high angular resolution imaging with NaCo to rule out any nearby eclipsing binaries. We find that HD 1397b is a Jovian planet, with a mass of 0.415 ± 0.020 MJ and a radius of 1.026 ± 0.026 RJ. Characterising giant planets in short-period eccentric orbits, such as HD 1397b, is important for understanding and testing theories for the formation and migration of giant planets as well as planet-star interactions.

AB - The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant planet in an 11.54-day eccentric orbit around a bright (V = 7.9) G-type subgiant. We estimate both host star and planetary parameters consistently using EXOFASTv2 based on TESS time-series photometry of transits and radial velocity measurements with CORALIE and MINERVA-Australis. We also present high angular resolution imaging with NaCo to rule out any nearby eclipsing binaries. We find that HD 1397b is a Jovian planet, with a mass of 0.415 ± 0.020 MJ and a radius of 1.026 ± 0.026 RJ. Characterising giant planets in short-period eccentric orbits, such as HD 1397b, is important for understanding and testing theories for the formation and migration of giant planets as well as planet-star interactions.

KW - Planets and satellites: detection

KW - Planets and satellites: individual: 394137592

KW - Planets and satellites: individual: HD 1397b

KW - Planets and satellites: individual: TOI-120

UR - http://www.scopus.com/inward/record.url?scp=85062784325&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062784325&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201834577

DO - 10.1051/0004-6361/201834577

M3 - Article

AN - SCOPUS:85062784325

SN - 0004-6361

VL - 623

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A100

ER -

A Jovian planet in an eccentric 11.5 day orbit around HD 1397 discovered by TESS

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Keywords

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