A candidate substellar companion to HR 7329

Patrick J. Lowrance; Glenn Schneider; J. Davy Kirkpatrick; E. E. Becklin; Alycia J. Weinberger; B. Zuckerman; Phil Plait; Eliot M. Malmuth; Sara R. Heap; A. Schultz; Bradford A. Smith; Richard J. Terrile; Dean C. Hines

doi:10.1086/309437

A candidate substellar companion to HR 7329

Patrick J. Lowrance, Glenn Schneider, J. Davy Kirkpatrick, E. E. Becklin, Alycia J. Weinberger, B. Zuckerman, Phil Plait, Eliot M. Malmuth, Sara R. Heap, A. Schultz, Bradford A. Smith, Richard J. Terrile, Dean C. Hines

Steward Observatory

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100 Scopus citations

Abstract

We present the discovery of a candidate substellar companion from a survey of nearby young stars made with the Near-Infrared Camera and Multiobject Spectrometer coronagraph on the Bubble Space Telescope. The H ≈ 12 mag object was discovered approximately 4″ from the young AO V star HR 7329. Using follow-up spectroscopy from the Space Telescope Imaging Spectrograph, we derive a spectral type between M7 V and M8 V with an effective temperature of ∼2600 K. We estimate that the probability of a chance alignment with a foreground dwarf star of this nature is ∼10^-8, and therefore we suggest that the object (HR 7329B) is physically associated with HR 7329, with a projected separation of 200 AU. Current brown dwarf cooling models indicate a mass of less than 50 M_Jup for HR 7329B based on age estimates of ≤ 30 Myr for HR 7329A.

Original language	English (US)
Pages (from-to)	390-395
Number of pages	6
Journal	Astrophysical Journal
Volume	541
Issue number	1 PART 1
DOIs	https://doi.org/10.1086/309437
State	Published - Sep 20 2000

Keywords

Stars: low-mass, brown dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/309437

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A candidate substellar companion to HR 7329. / Lowrance, Patrick J.; Schneider, Glenn; Kirkpatrick, J. Davy; Becklin, E. E.; Weinberger, Alycia J.; Zuckerman, B.; Plait, Phil; Malmuth, Eliot M.; Heap, Sara R.; Schultz, A.; Smith, Bradford A.; Terrile, Richard J.; Hines, Dean C.

In: Astrophysical Journal, Vol. 541, No. 1 PART 1, 20.09.2000, p. 390-395.

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

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title = "A candidate substellar companion to HR 7329",

abstract = "We present the discovery of a candidate substellar companion from a survey of nearby young stars made with the Near-Infrared Camera and Multiobject Spectrometer coronagraph on the Bubble Space Telescope. The H ≈ 12 mag object was discovered approximately 4″ from the young AO V star HR 7329. Using follow-up spectroscopy from the Space Telescope Imaging Spectrograph, we derive a spectral type between M7 V and M8 V with an effective temperature of ∼2600 K. We estimate that the probability of a chance alignment with a foreground dwarf star of this nature is ∼10-8, and therefore we suggest that the object (HR 7329B) is physically associated with HR 7329, with a projected separation of 200 AU. Current brown dwarf cooling models indicate a mass of less than 50 MJup for HR 7329B based on age estimates of ≤ 30 Myr for HR 7329A.",

keywords = "Stars: low-mass, brown dwarfs",

author = "Lowrance, {Patrick J.} and Glenn Schneider and Kirkpatrick, {J. Davy} and Becklin, {E. E.} and Weinberger, {Alycia J.} and B. Zuckerman and Phil Plait and Malmuth, {Eliot M.} and Heap, {Sara R.} and A. Schultz and Smith, {Bradford A.} and Terrile, {Richard J.} and Hines, {Dean C.}",

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T1 - A candidate substellar companion to HR 7329

AU - Lowrance, Patrick J.

AU - Schneider, Glenn

AU - Kirkpatrick, J. Davy

AU - Becklin, E. E.

AU - Weinberger, Alycia J.

AU - Zuckerman, B.

AU - Plait, Phil

AU - Malmuth, Eliot M.

AU - Heap, Sara R.

AU - Schultz, A.

AU - Smith, Bradford A.

AU - Terrile, Richard J.

AU - Hines, Dean C.

PY - 2000/9/20

Y1 - 2000/9/20

N2 - We present the discovery of a candidate substellar companion from a survey of nearby young stars made with the Near-Infrared Camera and Multiobject Spectrometer coronagraph on the Bubble Space Telescope. The H ≈ 12 mag object was discovered approximately 4″ from the young AO V star HR 7329. Using follow-up spectroscopy from the Space Telescope Imaging Spectrograph, we derive a spectral type between M7 V and M8 V with an effective temperature of ∼2600 K. We estimate that the probability of a chance alignment with a foreground dwarf star of this nature is ∼10-8, and therefore we suggest that the object (HR 7329B) is physically associated with HR 7329, with a projected separation of 200 AU. Current brown dwarf cooling models indicate a mass of less than 50 MJup for HR 7329B based on age estimates of ≤ 30 Myr for HR 7329A.

AB - We present the discovery of a candidate substellar companion from a survey of nearby young stars made with the Near-Infrared Camera and Multiobject Spectrometer coronagraph on the Bubble Space Telescope. The H ≈ 12 mag object was discovered approximately 4″ from the young AO V star HR 7329. Using follow-up spectroscopy from the Space Telescope Imaging Spectrograph, we derive a spectral type between M7 V and M8 V with an effective temperature of ∼2600 K. We estimate that the probability of a chance alignment with a foreground dwarf star of this nature is ∼10-8, and therefore we suggest that the object (HR 7329B) is physically associated with HR 7329, with a projected separation of 200 AU. Current brown dwarf cooling models indicate a mass of less than 50 MJup for HR 7329B based on age estimates of ≤ 30 Myr for HR 7329A.

KW - Stars: low-mass, brown dwarfs

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JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

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ER -

A candidate substellar companion to HR 7329

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