Spitzer planet limits around the pulsating white dwarf GD66

Fergal Mullally; William T. Reach; Steven Degennaro; Adam S. Burrows

doi:10.1088/0004-637X/694/1/327

Spitzer planet limits around the pulsating white dwarf GD66

Fergal Mullally, William T. Reach, Steven Degennaro, Adam S. Burrows

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

20 Scopus citations

Abstract

We present infrared observations in search of a planet around the white dwarf, GD66. Time-series photometry of GD66 shows a variation in the arrival time of stellar pulsations consistent with the presence of a planet with mass ≥2.4M _J. Any such planet is too close to the star to be resolved, but the planet's light can be directly detected as an excess flux at 4.5μm. We observed GD66 with the two shorter wavelength channels of the Infrared Array Camera on Spitzer but did not find strong evidence of a companion, placing an upper limit of 5-7M _J on the mass of the companion, assuming an age of 1.2-1.7 Gyr.

Original language	English (US)
Pages (from-to)	327-331
Number of pages	5
Journal	Astrophysical Journal
Volume	694
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/694/1/327
State	Published - 2009

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Infrared: stars
Planetary systems
Stars: oscillations
White dwarfs

Access to Document

10.1088/0004-637X/694/1/327

Cite this

@article{fa2a8998575b425ab66c61a3faa0224f,

title = "Spitzer planet limits around the pulsating white dwarf GD66",

abstract = "We present infrared observations in search of a planet around the white dwarf, GD66. Time-series photometry of GD66 shows a variation in the arrival time of stellar pulsations consistent with the presence of a planet with mass ≥2.4M J. Any such planet is too close to the star to be resolved, but the planet's light can be directly detected as an excess flux at 4.5μm. We observed GD66 with the two shorter wavelength channels of the Infrared Array Camera on Spitzer but did not find strong evidence of a companion, placing an upper limit of 5-7M J on the mass of the companion, assuming an age of 1.2-1.7 Gyr.",

keywords = "Infrared: stars, Planetary systems, Stars: oscillations, White dwarfs",

author = "Fergal Mullally and Reach, {William T.} and Steven Degennaro and Burrows, {Adam S.}",

year = "2009",

doi = "10.1088/0004-637X/694/1/327",

language = "English (US)",

volume = "694",

pages = "327--331",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Spitzer planet limits around the pulsating white dwarf GD66

AU - Mullally, Fergal

AU - Reach, William T.

AU - Degennaro, Steven

AU - Burrows, Adam S.

PY - 2009

Y1 - 2009

N2 - We present infrared observations in search of a planet around the white dwarf, GD66. Time-series photometry of GD66 shows a variation in the arrival time of stellar pulsations consistent with the presence of a planet with mass ≥2.4M J. Any such planet is too close to the star to be resolved, but the planet's light can be directly detected as an excess flux at 4.5μm. We observed GD66 with the two shorter wavelength channels of the Infrared Array Camera on Spitzer but did not find strong evidence of a companion, placing an upper limit of 5-7M J on the mass of the companion, assuming an age of 1.2-1.7 Gyr.

AB - We present infrared observations in search of a planet around the white dwarf, GD66. Time-series photometry of GD66 shows a variation in the arrival time of stellar pulsations consistent with the presence of a planet with mass ≥2.4M J. Any such planet is too close to the star to be resolved, but the planet's light can be directly detected as an excess flux at 4.5μm. We observed GD66 with the two shorter wavelength channels of the Infrared Array Camera on Spitzer but did not find strong evidence of a companion, placing an upper limit of 5-7M J on the mass of the companion, assuming an age of 1.2-1.7 Gyr.

KW - Infrared: stars

KW - Planetary systems

KW - Stars: oscillations

KW - White dwarfs

UR - http://www.scopus.com/inward/record.url?scp=70450133156&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70450133156&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/694/1/327

DO - 10.1088/0004-637X/694/1/327

M3 - Article

AN - SCOPUS:70450133156

SN - 0004-637X

VL - 694

SP - 327

EP - 331

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Spitzer planet limits around the pulsating white dwarf GD66

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this