Old, rich, and eccentric: Two jovian planets orbiting evolved metal-rich stars

Kathryn M.G. Peek; John Asher Johnson; Debra A. Fischer; Geoffrey W. Marcy; Gregory W. Henry; Andrew W. Howard; Jason T. Wright; Thomas B. Lowe; Sabine Reffert; Christian Schwab; Peter K.G. Williams; Howard Isaacson; Matthew J. Giguere

doi:10.1086/599862

Old, rich, and eccentric: Two jovian planets orbiting evolved metal-rich stars

Kathryn M.G. Peek, John Asher Johnson, Debra A. Fischer, Geoffrey W. Marcy, Gregory W. Henry, Andrew W. Howard, Jason T. Wright, Thomas B. Lowe, Sabine Reffert, Christian Schwab, Peter K.G. Williams, Howard Isaacson, Matthew J. Giguere

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars reveal the presence of Jupiter-mass exoplanets in highly eccentric orbits. HD 16175 is a G0 subgiant from the Lick Subgiants Planet Search, orbited by a planet having a minimum mass of 4:4 M _Jup, in an eccentric (e= 0:59), 2.71 yr orbit. HD 96167 is a G5 subgiant from the N2K ("Next 2000") program at Keck Observatory, orbited by a planet having a minimum mass of 0:68 M _Jup, in an eccentric (e=0:71), 1.366 yr orbit. Both stars are relatively massive (M _z.ast; = 1:3 M⊙) and are very metal rich ([Fe/H]> +0:3). We describe our methods for measuring the stars' radial velocity variations and photometric stability.

Original language	English (US)
Pages (from-to)	613-620
Number of pages	8
Journal	Publications of the Astronomical Society of the Pacific
Volume	121
Issue number	880
DOIs	https://doi.org/10.1086/599862
State	Published - Jun 2009

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/599862

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Peek, K. M. G., Johnson, J. A., Fischer, D. A., Marcy, G. W., Henry, G. W., Howard, A. W., Wright, J. T., Lowe, T. B., Reffert, S., Schwab, C., Williams, P. K. G., Isaacson, H., & Giguere, M. J. (2009). Old, rich, and eccentric: Two jovian planets orbiting evolved metal-rich stars. Publications of the Astronomical Society of the Pacific, 121(880), 613-620. https://doi.org/10.1086/599862

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title = "Old, rich, and eccentric: Two jovian planets orbiting evolved metal-rich stars",

abstract = "We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars reveal the presence of Jupiter-mass exoplanets in highly eccentric orbits. HD 16175 is a G0 subgiant from the Lick Subgiants Planet Search, orbited by a planet having a minimum mass of 4:4 M Jup, in an eccentric (e= 0:59), 2.71 yr orbit. HD 96167 is a G5 subgiant from the N2K ({"}Next 2000{"}) program at Keck Observatory, orbited by a planet having a minimum mass of 0:68 M Jup, in an eccentric (e=0:71), 1.366 yr orbit. Both stars are relatively massive (M z.ast; = 1:3 M⊙) and are very metal rich ([Fe/H]> +0:3). We describe our methods for measuring the stars' radial velocity variations and photometric stability.",

author = "Peek, {Kathryn M.G.} and Johnson, {John Asher} and Fischer, {Debra A.} and Marcy, {Geoffrey W.} and Henry, {Gregory W.} and Howard, {Andrew W.} and Wright, {Jason T.} and Lowe, {Thomas B.} and Sabine Reffert and Christian Schwab and Williams, {Peter K.G.} and Howard Isaacson and Giguere, {Matthew J.}",

year = "2009",

month = jun,

doi = "10.1086/599862",

language = "English (US)",

volume = "121",

pages = "613--620",

journal = "Publications of the Astronomical Society of the Pacific",

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publisher = "Institute of Physics Publishing",

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T2 - Two jovian planets orbiting evolved metal-rich stars

AU - Peek, Kathryn M.G.

AU - Johnson, John Asher

AU - Fischer, Debra A.

AU - Marcy, Geoffrey W.

AU - Henry, Gregory W.

AU - Howard, Andrew W.

AU - Wright, Jason T.

AU - Lowe, Thomas B.

AU - Reffert, Sabine

AU - Schwab, Christian

AU - Williams, Peter K.G.

AU - Isaacson, Howard

AU - Giguere, Matthew J.

PY - 2009/6

Y1 - 2009/6

N2 - We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars reveal the presence of Jupiter-mass exoplanets in highly eccentric orbits. HD 16175 is a G0 subgiant from the Lick Subgiants Planet Search, orbited by a planet having a minimum mass of 4:4 M Jup, in an eccentric (e= 0:59), 2.71 yr orbit. HD 96167 is a G5 subgiant from the N2K ("Next 2000") program at Keck Observatory, orbited by a planet having a minimum mass of 0:68 M Jup, in an eccentric (e=0:71), 1.366 yr orbit. Both stars are relatively massive (M z.ast; = 1:3 M⊙) and are very metal rich ([Fe/H]> +0:3). We describe our methods for measuring the stars' radial velocity variations and photometric stability.

AB - We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars reveal the presence of Jupiter-mass exoplanets in highly eccentric orbits. HD 16175 is a G0 subgiant from the Lick Subgiants Planet Search, orbited by a planet having a minimum mass of 4:4 M Jup, in an eccentric (e= 0:59), 2.71 yr orbit. HD 96167 is a G5 subgiant from the N2K ("Next 2000") program at Keck Observatory, orbited by a planet having a minimum mass of 0:68 M Jup, in an eccentric (e=0:71), 1.366 yr orbit. Both stars are relatively massive (M z.ast; = 1:3 M⊙) and are very metal rich ([Fe/H]> +0:3). We describe our methods for measuring the stars' radial velocity variations and photometric stability.

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Old, rich, and eccentric: Two jovian planets orbiting evolved metal-rich stars

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