Published March 1, 2013 | Version v1
Journal article Metadata-only

CRYSTALLINE SILICATES IN EVOLVED STARS. I. SPITZER/INFRARED SPECTROGRAPH SPECTROSCOPY OF IRAS 16456–3542, 18354–0638, AND 23239+5754

Creators

  • 1. Department of Astronomy, Beijing Normal University, Beijing 100875 (China)
  • 2. Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211 (United States)
  • 3. Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723 (United States)

Description

We report the Spitzer Infrared Spectrograph (IRS) observations of three evolved stars: IRAS 16456–3542, 18354–0638, and 23239+5754. The 9.9-37.2 μm Spitzer/IRS high-resolution spectra of these three sources exhibit rich sets of enstatite-dominated crystalline silicate emission features. IRAS 16456–3542 is extremely rich in crystalline silicates, with >90% of its silicate mass in crystalline form, the highest to date ever reported for crystalline silicate sources.

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/765/1/72

Additional details

Identifiers

DOI
10.1088/0004-637X/765/1/72;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
765
Journal Issue
1
Journal Page Range
[7 p.]
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44122077
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; ASTRONOMY; ASTROPHYSICS; EMISSION SPECTRA; EMISSION SPECTROSCOPY; ENSTATITE; GIANT STARS; INFRARED SPECTRA; MASS; PHOTON EMISSION; RESOLUTION; SILICATES
Descriptors DEC
EMISSION; MINERALS; OXYGEN COMPOUNDS; PHYSICS; SILICATE MINERALS; SILICON COMPOUNDS; SPECTRA; SPECTROSCOPY; STARS