An infrared coronagraphic survey for substellar companions

Patrick J. Lowrance; E. E. Becklin; Glenn Schneider; J. Davy Kirkpatrick; Alycia J. Weinberger; B. Zuckerman; Christophe Dumas; Jean Luc Beuzit; Phil Plait; Eliot Malumuth; Sally Heap; Richard J. Terrile; Dean C. Hines

doi:10.1086/432839

An infrared coronagraphic survey for substellar companions

Patrick J. Lowrance, E. E. Becklin, Glenn Schneider, J. Davy Kirkpatrick, Alycia J. Weinberger, B. Zuckerman, Christophe Dumas, Jean Luc Beuzit, Phil Plait, Eliot Malumuth, Sally Heap, Richard J. Terrile, Dean C. Hines

Steward Observatory

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

94 Scopus citations

Abstract

We have used the F160W filter (1.4-1.8 μm) and the coronagraph on the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope to survey 45 single stars with a median age of 0.15 Gyr, an average distance of 30 pc, and an average H magnitude of 7 mag. For the median age we were capable of detecting a 30M_J companion at separations between 15 and 200 AU. A 5M_J object could have been detected at 30 AU around 36% of our primaries. For several of our targets that were less than 30 Myr old, the lower mass limit was as low as 1M_J, well into the high mass planet region. Results of the entire survey include the proper-motion verification of five low-mass stellar companions, two brown dwarfs (HR7329B and TWA5B), and one possible brown dwarf binary (Gl 577B/C).

Original language	English (US)
Pages (from-to)	1845-1861
Number of pages	17
Journal	Astronomical Journal
Volume	130
Issue number	4
DOIs	https://doi.org/10.1086/432839
State	Published - Oct 2005

Keywords

Stars: Low-mass, brown dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/432839

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title = "An infrared coronagraphic survey for substellar companions",

abstract = "We have used the F160W filter (1.4-1.8 μm) and the coronagraph on the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope to survey 45 single stars with a median age of 0.15 Gyr, an average distance of 30 pc, and an average H magnitude of 7 mag. For the median age we were capable of detecting a 30MJ companion at separations between 15 and 200 AU. A 5MJ object could have been detected at 30 AU around 36% of our primaries. For several of our targets that were less than 30 Myr old, the lower mass limit was as low as 1MJ, well into the high mass planet region. Results of the entire survey include the proper-motion verification of five low-mass stellar companions, two brown dwarfs (HR7329B and TWA5B), and one possible brown dwarf binary (Gl 577B/C).",

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

author = "Lowrance, {Patrick J.} and Becklin, {E. E.} and Glenn Schneider and Kirkpatrick, {J. Davy} and Weinberger, {Alycia J.} and B. Zuckerman and Christophe Dumas and Beuzit, {Jean Luc} and Phil Plait and Eliot Malumuth and Sally Heap and Terrile, {Richard J.} and Hines, {Dean C.}",

year = "2005",

month = oct,

doi = "10.1086/432839",

language = "English (US)",

volume = "130",

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journal = "Astronomical Journal",

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AU - Lowrance, Patrick J.

AU - Becklin, E. E.

AU - Schneider, Glenn

AU - Kirkpatrick, J. Davy

AU - Weinberger, Alycia J.

AU - Zuckerman, B.

AU - Dumas, Christophe

AU - Beuzit, Jean Luc

AU - Plait, Phil

AU - Malumuth, Eliot

AU - Heap, Sally

AU - Terrile, Richard J.

AU - Hines, Dean C.

PY - 2005/10

Y1 - 2005/10

N2 - We have used the F160W filter (1.4-1.8 μm) and the coronagraph on the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope to survey 45 single stars with a median age of 0.15 Gyr, an average distance of 30 pc, and an average H magnitude of 7 mag. For the median age we were capable of detecting a 30MJ companion at separations between 15 and 200 AU. A 5MJ object could have been detected at 30 AU around 36% of our primaries. For several of our targets that were less than 30 Myr old, the lower mass limit was as low as 1MJ, well into the high mass planet region. Results of the entire survey include the proper-motion verification of five low-mass stellar companions, two brown dwarfs (HR7329B and TWA5B), and one possible brown dwarf binary (Gl 577B/C).

AB - We have used the F160W filter (1.4-1.8 μm) and the coronagraph on the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope to survey 45 single stars with a median age of 0.15 Gyr, an average distance of 30 pc, and an average H magnitude of 7 mag. For the median age we were capable of detecting a 30MJ companion at separations between 15 and 200 AU. A 5MJ object could have been detected at 30 AU around 36% of our primaries. For several of our targets that were less than 30 Myr old, the lower mass limit was as low as 1MJ, well into the high mass planet region. Results of the entire survey include the proper-motion verification of five low-mass stellar companions, two brown dwarfs (HR7329B and TWA5B), and one possible brown dwarf binary (Gl 577B/C).

KW - Stars: Low-mass, brown dwarfs

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JO - Astronomical Journal

JF - Astronomical Journal

IS - 4

ER -

An infrared coronagraphic survey for substellar companions

Abstract

Keywords

ASJC Scopus subject areas

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