Infrared spectra of protostars: Composition of the dust shells

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/159622· OSTI ID:5290776

Willner, S P; Gillett, F C; Herter, T L; Jones, B; Krassner, J; Merrill, K M; Pipher, J L; Puetter, R C; Rudy, R J; Russell, R W; Soifer, B T

Nearly complete 2 to 13 ..mu..m spectra are presented for 13 compact infrared sources associated with molecular clouds, as well as partial spectra of six additional objects. The spectra resemble blackbodies with superposed absorption features from 2.8 to 3.5 ..mu..m, at 6.0 and 6.8 ..mu..m, and in the silicate band centered near 9.7 ..mu..m. Correlations among the features are studied in an attempt to confirm possible identifications. A good correlation between the deepest part of the absorption at 3.1 ..mu..m, its long wavelength wing, and the 6.0 ..mu..m features suggests that all may be due to large amorphous water ice particles. The relatively poor correlation between the 3.4 and 6.8 ..mu..m optical depths adds no evidence to support the suggestion that these bands may be due to CH bonds.

• Research Organization: Center for Astrophysica and Space Sciences, University of California, San Diego
• OSTI ID: 5290776
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 253:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
BACTERIA
COSMIC DUST
COSMIC GASES
DUSTS
FLUIDS
GASES
INFRARED SPECTRA
MICROORGANISMS
OPACITY
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROTEUS
SILICATES
SILICON COMPOUNDS
SPECTRA