Interpretation of far infra-red emission from interstellar grains

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Mon. Notic. Roy. Astron. Soc., v. 164, no. 3, pp. 295-302

DOI:https://doi.org/10.1093/mnras/164.3.295· OSTI ID:4401711

Caroff, L J; Petrosian, V; Salpeter, E E; Wagoner, R V; Werner, M W

The Kramers--Kronig relations are applied to grains in the interstellar medium and it is found that the recent uv, visual, and infrared extinction curves provide marginal evidence against silicates as the major cause of this extinction. In the far infrared, grains contribute little to the extinction, but can be observed in thermal emission. It is shown that the far infrared emission from grains in a given bandwidth sets a lower limit to the grain tem100 mu and from Orion at 350 mu minimum grain temperatures are found which are larger than the observed brightness temperature. The emission and extinction data can be used together to constrain the allowable range of parameters for the grains. (auth)

• Research Organization: National Aeronautics and Space Administration, Moffett Field, CA
• NSA Number: NSA-29-005936
• OSTI ID: 4401711
• Journal Information: Mon. Notic. Roy. Astron. Soc., v. 164, no. 3, pp. 295-302, Journal Name: Mon. Notic. Roy. Astron. Soc., v. 164, no. 3, pp. 295-302; ISSN MNRAA
• Country of Publication: United Kingdom
• Language: English

Related Subjects

*INTERSTELLAR GRAINS-- INFRARED RADIATION
ABSORPTION
BRIGHTNESS
COSMIC DUST
EMISSION SPECTRA
INTERSTELLAR SPACE
N56500* --Physics (Astrophysics & Cosmology)--Galaxies
SILICATES
ULTRAVIOLET RADIATION
VISIBLE RADIATION