The serendipitous discovery of a debris disk around the A dwarf HD 46190

G. C. Sloan; V. Charmandaris; S. B. Fajardo-Acosta; D. L. Shupe; P. W. Morris; K. Y.L. Su; D. C. Hines; J. Rho; C. W. Engelbracht

doi:10.1086/425324

The serendipitous discovery of a debris disk around the A dwarf HD 46190

G. C. Sloan, V. Charmandaris, S. B. Fajardo-Acosta, D. L. Shupe, P. W. Morris, K. Y.L. Su, D. C. Hines, J. Rho, C. W. Engelbracht

Research output: Contribution to journal › Review article › peer-review

11 Scopus citations

Abstract

The Infrared Spectrograph on the Spitzer Space Telescope has observed several A dwarfs as potential standards and cross-calibrators, and one of these stars, HD 46190, shows the spectroscopic signature of a debris disk. The disk produces a spectral excess that can be fitted with a cool blackbody of ∼81 K. If the emitting particles are spherical blackbodies, they would lie at a distance of ∼82 AU from the central star. The spectrum from the disk can also be fitted with a spectrum rising proportionally with wavelength, and this spectral behavior is consistent with material falling into the inner disk as a result of Poynting-Robertson drag.

Original language	English (US)
Pages (from-to)	L77-L80
Journal	Astrophysical Journal
Volume	614
Issue number	1 II
DOIs	https://doi.org/10.1086/425324
State	Published - Oct 10 2004
Externally published	Yes

Keywords

Circumstellar matter
Infrared: Stars
Stars: Individual (HD 46190)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/425324

Cite this

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title = "The serendipitous discovery of a debris disk around the A dwarf HD 46190",

abstract = "The Infrared Spectrograph on the Spitzer Space Telescope has observed several A dwarfs as potential standards and cross-calibrators, and one of these stars, HD 46190, shows the spectroscopic signature of a debris disk. The disk produces a spectral excess that can be fitted with a cool blackbody of ∼81 K. If the emitting particles are spherical blackbodies, they would lie at a distance of ∼82 AU from the central star. The spectrum from the disk can also be fitted with a spectrum rising proportionally with wavelength, and this spectral behavior is consistent with material falling into the inner disk as a result of Poynting-Robertson drag.",

keywords = "Circumstellar matter, Infrared: Stars, Stars: Individual (HD 46190)",

author = "Sloan, {G. C.} and V. Charmandaris and Fajardo-Acosta, {S. B.} and Shupe, {D. L.} and Morris, {P. W.} and Su, {K. Y.L.} and Hines, {D. C.} and J. Rho and Engelbracht, {C. W.}",

note = "Funding Information: The observations were made with the Spitzer Space Telescope, which is operated by JPL, California Institute of Technology, under NASA contract 1407 and supported by NASA through JPL (contract 1257184). This research has made use of the SIMBAD and VIZIER databases, operated at the Centre de Donn{\'e}es astronomiques de Strasbourg, and the Infrared Science Archive at the Infrared Processing and Analysis Center, which is operated by JPL.",

year = "2004",

month = oct,

day = "10",

doi = "10.1086/425324",

language = "English (US)",

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T1 - The serendipitous discovery of a debris disk around the A dwarf HD 46190

AU - Sloan, G. C.

AU - Charmandaris, V.

AU - Fajardo-Acosta, S. B.

AU - Shupe, D. L.

AU - Morris, P. W.

AU - Su, K. Y.L.

AU - Hines, D. C.

AU - Rho, J.

AU - Engelbracht, C. W.

N1 - Funding Information: The observations were made with the Spitzer Space Telescope, which is operated by JPL, California Institute of Technology, under NASA contract 1407 and supported by NASA through JPL (contract 1257184). This research has made use of the SIMBAD and VIZIER databases, operated at the Centre de Données astronomiques de Strasbourg, and the Infrared Science Archive at the Infrared Processing and Analysis Center, which is operated by JPL.

PY - 2004/10/10

Y1 - 2004/10/10

N2 - The Infrared Spectrograph on the Spitzer Space Telescope has observed several A dwarfs as potential standards and cross-calibrators, and one of these stars, HD 46190, shows the spectroscopic signature of a debris disk. The disk produces a spectral excess that can be fitted with a cool blackbody of ∼81 K. If the emitting particles are spherical blackbodies, they would lie at a distance of ∼82 AU from the central star. The spectrum from the disk can also be fitted with a spectrum rising proportionally with wavelength, and this spectral behavior is consistent with material falling into the inner disk as a result of Poynting-Robertson drag.

AB - The Infrared Spectrograph on the Spitzer Space Telescope has observed several A dwarfs as potential standards and cross-calibrators, and one of these stars, HD 46190, shows the spectroscopic signature of a debris disk. The disk produces a spectral excess that can be fitted with a cool blackbody of ∼81 K. If the emitting particles are spherical blackbodies, they would lie at a distance of ∼82 AU from the central star. The spectrum from the disk can also be fitted with a spectrum rising proportionally with wavelength, and this spectral behavior is consistent with material falling into the inner disk as a result of Poynting-Robertson drag.

KW - Circumstellar matter

KW - Infrared: Stars

KW - Stars: Individual (HD 46190)

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M3 - Review article

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SN - 0004-637X

VL - 614

SP - L77-L80

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 II

ER -

The serendipitous discovery of a debris disk around the A dwarf HD 46190

Abstract

Keywords

ASJC Scopus subject areas

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