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

Date

2006

Authors

Sloan, G C
Devost, D
Bernard-Salas, J
Wood, Peter R
Houck, J R

Journal Title

Journal ISSN

Volume Title

Publisher

IOP Publishing

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.

Description

Keywords

Keywords: Circumstellar matter - infrared; Individual (HV 2310); Stars - stars

Citation

Source

Astrophysical Journal, The

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1086/498076

Restricted until

2037-12-31