Seven new Keck planets orbiting G and K dwarfs

R. Paul Butler; Geoffrey W. Marcy; Steven S. Vogt; Debra A. Fischer; Gregory W. Henry; Gregory Laughlin; Jason T. Wright

doi:10.1086/344570

Seven new Keck planets orbiting G and K dwarfs

R. Paul Butler, Geoffrey W. Marcy, Steven S. Vogt, Debra A. Fischer, Gregory W. Henry, Gregory Laughlin, Jason T. Wright

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

110 Scopus citations

Abstract

Planetary mass companions orbiting seven nearby G and K dwarfs have been found from the Keck Precision Doppler Survey. A "51 Peg-like" planet orbiting HD 49674 has the smallest mass yet found, M sin i = 0.12 M _J. This system does not transit. A double-planet system orbits HD 37124, with periods of 153 days and 6 yr and minimum masses of 0.91 and 1.70 M_J. Single companions with moderate eccentricity have been found orbiting HD 108874, HD 72659, HD 114729, and HD 145675 with orbital periods ranging from 1.09 to 5.98 yr, yielding minimum masses ranging from 0.90 to 4.87 M_J. Periodic Doppler velocity variations, consistent with a mildly eccentric planet in a 1 AU orbit, are reported for the chromospherically active K0 dwarf HD 128311. It remains plausible that these velocity variations are due to stellar photospheric "jitter".

Original language	English (US)
Pages (from-to)	455-466
Number of pages	12
Journal	Astrophysical Journal
Volume	582
Issue number	1 I
DOIs	https://doi.org/10.1086/344570
State	Published - Jan 1 2003

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/344570

Cite this

@article{7c9d3967e4824da8b2444f4807121640,

title = "Seven new Keck planets orbiting G and K dwarfs",

abstract = "Planetary mass companions orbiting seven nearby G and K dwarfs have been found from the Keck Precision Doppler Survey. A {"}51 Peg-like{"} planet orbiting HD 49674 has the smallest mass yet found, M sin i = 0.12 M J. This system does not transit. A double-planet system orbits HD 37124, with periods of 153 days and 6 yr and minimum masses of 0.91 and 1.70 MJ. Single companions with moderate eccentricity have been found orbiting HD 108874, HD 72659, HD 114729, and HD 145675 with orbital periods ranging from 1.09 to 5.98 yr, yielding minimum masses ranging from 0.90 to 4.87 MJ. Periodic Doppler velocity variations, consistent with a mildly eccentric planet in a 1 AU orbit, are reported for the chromospherically active K0 dwarf HD 128311. It remains plausible that these velocity variations are due to stellar photospheric {"}jitter{"}.",

author = "Butler, {R. Paul} and Marcy, {Geoffrey W.} and Vogt, {Steven S.} and Fischer, {Debra A.} and Henry, {Gregory W.} and Gregory Laughlin and Wright, {Jason T.}",

year = "2003",

month = jan,

day = "1",

doi = "10.1086/344570",

language = "English (US)",

volume = "582",

pages = "455--466",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1 I",

}

TY - JOUR

T1 - Seven new Keck planets orbiting G and K dwarfs

AU - Butler, R. Paul

AU - Marcy, Geoffrey W.

AU - Vogt, Steven S.

AU - Fischer, Debra A.

AU - Henry, Gregory W.

AU - Laughlin, Gregory

AU - Wright, Jason T.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - Planetary mass companions orbiting seven nearby G and K dwarfs have been found from the Keck Precision Doppler Survey. A "51 Peg-like" planet orbiting HD 49674 has the smallest mass yet found, M sin i = 0.12 M J. This system does not transit. A double-planet system orbits HD 37124, with periods of 153 days and 6 yr and minimum masses of 0.91 and 1.70 MJ. Single companions with moderate eccentricity have been found orbiting HD 108874, HD 72659, HD 114729, and HD 145675 with orbital periods ranging from 1.09 to 5.98 yr, yielding minimum masses ranging from 0.90 to 4.87 MJ. Periodic Doppler velocity variations, consistent with a mildly eccentric planet in a 1 AU orbit, are reported for the chromospherically active K0 dwarf HD 128311. It remains plausible that these velocity variations are due to stellar photospheric "jitter".

AB - Planetary mass companions orbiting seven nearby G and K dwarfs have been found from the Keck Precision Doppler Survey. A "51 Peg-like" planet orbiting HD 49674 has the smallest mass yet found, M sin i = 0.12 M J. This system does not transit. A double-planet system orbits HD 37124, with periods of 153 days and 6 yr and minimum masses of 0.91 and 1.70 MJ. Single companions with moderate eccentricity have been found orbiting HD 108874, HD 72659, HD 114729, and HD 145675 with orbital periods ranging from 1.09 to 5.98 yr, yielding minimum masses ranging from 0.90 to 4.87 MJ. Periodic Doppler velocity variations, consistent with a mildly eccentric planet in a 1 AU orbit, are reported for the chromospherically active K0 dwarf HD 128311. It remains plausible that these velocity variations are due to stellar photospheric "jitter".

UR - http://www.scopus.com/inward/record.url?scp=0038193220&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038193220&partnerID=8YFLogxK

U2 - 10.1086/344570

DO - 10.1086/344570

M3 - Article

AN - SCOPUS:0038193220

SN - 0004-637X

VL - 582

SP - 455

EP - 466

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 I

ER -

Seven new Keck planets orbiting G and K dwarfs

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Cite this