The unusual silicate dust around HV 2310, an evolved star in the large magellanic cloud

G. C. Sloan; D. Devost; J. Bernard-Salas; P. R. Wood; J. R. Houck

doi:10.1086/498076

The unusual silicate dust around HV 2310, an evolved star in the large magellanic cloud

G. C. Sloan^*, D. Devost, J. Bernard-Salas, P. R. Wood, J. R. Houck

^*Corresponding author for this work

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

17 Citations (Scopus)

Abstract

The spectrum of HV 2310, an evolved star in the Large Magellanic Cloud, taken with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope, reveals the presence of an optically thin shell of silicate dust with unusual spectral structure in the 10 μm feature: an emission peak at 9.7 μm, a saddle at 10.4 μm, and an extended shoulder to 11.2 μm. This structure is similar to spectra from crystalline silicate grains, and of the available optical constants, forsterite provides the best fit. The spectrum also shows structure at 14 μm that may arise from an unidentified dust feature.

Original language	English
Pages (from-to)	472-477
Number of pages	6
Journal	Astrophysical Journal
Volume	638
Issue number	1 I
DOIs	https://doi.org/10.1086/498076
Publication status	Published - 10 Feb 2006

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title = "The unusual silicate dust around HV 2310, an evolved star in the large magellanic cloud",

abstract = "The spectrum of HV 2310, an evolved star in the Large Magellanic Cloud, taken with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope, reveals the presence of an optically thin shell of silicate dust with unusual spectral structure in the 10 μm feature: an emission peak at 9.7 μm, a saddle at 10.4 μm, and an extended shoulder to 11.2 μm. This structure is similar to spectra from crystalline silicate grains, and of the available optical constants, forsterite provides the best fit. The spectrum also shows structure at 14 μm that may arise from an unidentified dust feature.",

keywords = "Circumstellar matter - infrared, Individual (HV 2310), Stars - stars",

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T1 - The unusual silicate dust around HV 2310, an evolved star in the large magellanic cloud

AU - Sloan, G. C.

AU - Devost, D.

AU - Bernard-Salas, J.

AU - Wood, P. R.

AU - Houck, J. R.

PY - 2006/2/10

Y1 - 2006/2/10

N2 - The spectrum of HV 2310, an evolved star in the Large Magellanic Cloud, taken with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope, reveals the presence of an optically thin shell of silicate dust with unusual spectral structure in the 10 μm feature: an emission peak at 9.7 μm, a saddle at 10.4 μm, and an extended shoulder to 11.2 μm. This structure is similar to spectra from crystalline silicate grains, and of the available optical constants, forsterite provides the best fit. The spectrum also shows structure at 14 μm that may arise from an unidentified dust feature.

AB - The spectrum of HV 2310, an evolved star in the Large Magellanic Cloud, taken with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope, reveals the presence of an optically thin shell of silicate dust with unusual spectral structure in the 10 μm feature: an emission peak at 9.7 μm, a saddle at 10.4 μm, and an extended shoulder to 11.2 μm. This structure is similar to spectra from crystalline silicate grains, and of the available optical constants, forsterite provides the best fit. The spectrum also shows structure at 14 μm that may arise from an unidentified dust feature.

KW - Circumstellar matter - infrared

KW - Individual (HV 2310)

KW - Stars - stars

UR - http://www.scopus.com/inward/record.url?scp=33644508313&partnerID=8YFLogxK

U2 - 10.1086/498076

DO - 10.1086/498076

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SN - 0004-637X

VL - 638

SP - 472

EP - 477

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 I

ER -

The unusual silicate dust around HV 2310, an evolved star in the large magellanic cloud

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