Brown dwarf companions to white dwarfs

Matt R. Burleigh; Paul R. Steele; Paul D. Dobbie; Jay Farihi; Ralf Napiwotzki; Pierre F. L. Maxted; Martin A. Barstow; Richard F. Jameson; Sarah L. Casewell; Boris T. Gaensicke; Tom R. Marsh

doi:10.1063/1.3556209

Brown dwarf companions to white dwarfs

Matt R. Burleigh, Paul R. Steele, Paul D. Dobbie, Jay Farihi, Ralf Napiwotzki, Pierre F. L. Maxted, Martin A. Barstow, Richard F. Jameson, Sarah L. Casewell, Boris T. Gaensicke, Tom R. Marsh

Centre for Astrophysics Research (CAR)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

10 Citations (Scopus)

47 Downloads (Pure)

Abstract

Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly revealing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the approximate to 0.05M(circle dot) secondary, and new observations of GD 1400 which show that it too is a close, post-common envelope system. We also present the latest results in a near-infrared photometric search for unresolved ultra-cool companions and to white dwarfs with UKIDSS. Twenty five DA white dwarfs were identified as having photometric excesses indicative of a low mass companion, with 8-10 of these having a predicted mass in the range associated with brown dwarfs. The results of this survey show that the unresolved (< 2 '') brown dwarf companion fraction to DA white dwarfs is 0.3 <= f(WD+BD) <= 1.3%.

Original language	English
Title of host publication	Planetary systems beyond the main sequence
Editors	S Schuh, H Drechsel, U Heber
Place of Publication	Meville
Publisher	American Institute of Physics (AIP)
Pages	262-270
Number of pages	9
ISBN (Print)	978-0-7354-0886-9
DOIs	https://doi.org/10.1063/1.3556209
Publication status	Published - 2011

Keywords

White Dwarfs
Brown Dwarfs
Binaries

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10.1063/1.3556209

905431
"Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics."
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Burleigh, M. R., Steele, P. R., Dobbie, P. D., Farihi, J., Napiwotzki, R., Maxted, P. F. L., Barstow, M. A., Jameson, R. F., Casewell, S. L., Gaensicke, B. T., & Marsh, T. R. (2011). Brown dwarf companions to white dwarfs. In S. Schuh, H. Drechsel, & U. Heber (Eds.), Planetary systems beyond the main sequence (pp. 262-270). American Institute of Physics (AIP). https://doi.org/10.1063/1.3556209

@inproceedings{dd495bd890bb439e9a56770a8cf25d2c,

title = "Brown dwarf companions to white dwarfs",

abstract = "Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly revealing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the approximate to 0.05M(circle dot) secondary, and new observations of GD 1400 which show that it too is a close, post-common envelope system. We also present the latest results in a near-infrared photometric search for unresolved ultra-cool companions and to white dwarfs with UKIDSS. Twenty five DA white dwarfs were identified as having photometric excesses indicative of a low mass companion, with 8-10 of these having a predicted mass in the range associated with brown dwarfs. The results of this survey show that the unresolved (< 2 '') brown dwarf companion fraction to DA white dwarfs is 0.3 <= f(WD+BD) <= 1.3%.",

keywords = "White Dwarfs, Brown Dwarfs, Binaries",

author = "Burleigh, {Matt R.} and Steele, {Paul R.} and Dobbie, {Paul D.} and Jay Farihi and Ralf Napiwotzki and Maxted, {Pierre F. L.} and Barstow, {Martin A.} and Jameson, {Richard F.} and Casewell, {Sarah L.} and Gaensicke, {Boris T.} and Marsh, {Tom R.}",

note = "{"}Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.{"}",

year = "2011",

doi = "10.1063/1.3556209",

language = "English",

isbn = "978-0-7354-0886-9",

pages = "262--270",

editor = "S Schuh and H Drechsel and U Heber",

booktitle = "Planetary systems beyond the main sequence",

publisher = "American Institute of Physics (AIP)",

address = "United States",

}

TY - GEN

T1 - Brown dwarf companions to white dwarfs

AU - Burleigh, Matt R.

AU - Steele, Paul R.

AU - Dobbie, Paul D.

AU - Farihi, Jay

AU - Napiwotzki, Ralf

AU - Maxted, Pierre F. L.

AU - Barstow, Martin A.

AU - Jameson, Richard F.

AU - Casewell, Sarah L.

AU - Gaensicke, Boris T.

AU - Marsh, Tom R.

PY - 2011

Y1 - 2011

N2 - Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly revealing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the approximate to 0.05M(circle dot) secondary, and new observations of GD 1400 which show that it too is a close, post-common envelope system. We also present the latest results in a near-infrared photometric search for unresolved ultra-cool companions and to white dwarfs with UKIDSS. Twenty five DA white dwarfs were identified as having photometric excesses indicative of a low mass companion, with 8-10 of these having a predicted mass in the range associated with brown dwarfs. The results of this survey show that the unresolved (< 2 '') brown dwarf companion fraction to DA white dwarfs is 0.3 <= f(WD+BD) <= 1.3%.

AB - Brown dwarf companions to white dwarfs are rare, but recent infra-red surveys are slowly revealing examples. We present new observations of the post-common envelope binary WD0137-349, which reveals the effects of irradiation on the approximate to 0.05M(circle dot) secondary, and new observations of GD 1400 which show that it too is a close, post-common envelope system. We also present the latest results in a near-infrared photometric search for unresolved ultra-cool companions and to white dwarfs with UKIDSS. Twenty five DA white dwarfs were identified as having photometric excesses indicative of a low mass companion, with 8-10 of these having a predicted mass in the range associated with brown dwarfs. The results of this survey show that the unresolved (< 2 '') brown dwarf companion fraction to DA white dwarfs is 0.3 <= f(WD+BD) <= 1.3%.

KW - White Dwarfs

KW - Brown Dwarfs

KW - Binaries

U2 - 10.1063/1.3556209

DO - 10.1063/1.3556209

M3 - Conference contribution

SN - 978-0-7354-0886-9

SP - 262

EP - 270

BT - Planetary systems beyond the main sequence

A2 - Schuh, S

A2 - Drechsel, H

A2 - Heber, U

PB - American Institute of Physics (AIP)

CY - Meville

ER -

Brown dwarf companions to white dwarfs

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Keywords

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