Behind the H II region Sharpless 217 - the envelope of the diffuse molecular cloud at G159. 1 + 3. 3

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Astron. J.; (United States)

OSTI ID:5838599

Vallee, J P

Observations of the methylidyne (CH) molecule were made toward the envelope at G159.1 + 3.3 of the molecular cloud located behind the H II region Sharpless 217, at (1950) R.A. = 04h55m00s, Dec. = +47 deg 56 arcsec. Some of the envelope parameters derived from these CH line observations include a column density of CH of 2 x 10 to the 13th/sq cm, a line optical depth of -0.001, and a microturbulent velocity of 3.4 km/s. These observed data are also consistent with a blister-type model for the H II region, roughly facing the earth, coming off the envelope of the molecular cloud. 30 references.

• Research Organization: National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa
• OSTI ID: 5838599
• Journal Information: Astron. J.; (United States), Vol. 94
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC GASES
RADIOWAVE RADIATION
H2 REGIONS
HYDROGEN IONS
INTERSTELLAR SPACE
MATHEMATICAL MODELS
MOLECULES
PHYSICAL PROPERTIES
STAR CLUSTERS
SUPERNOVAE
VELOCITY
WAVELENGTHS
CHARGED PARTICLES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ERUPTIVE VARIABLE STARS
FLUIDS
GASES
IONS
RADIATIONS
SPACE
STARS
VARIABLE STARS
640105* - Astrophysics & Cosmology- Galaxies