2003ApJ...586.1111M

Query : 2003ApJ...586.1111M

2003ApJ...586.1111M - Astrophys. J., 586, 1111-1119 (2003/April-1)

CH, CO, and E(B-V) as molecular gas tracers in a translucent cloud.

MAGNANI L., CHASTAIN R.J., KIM H.C., HARTMANN D., TRUONG A.T. and THADDEUS P.

Abstract (from CDS):

The effectiveness of three molecular hydrogen gas tracers–the CH 2Π1/2, J=1/2, F=1-1 transition, the CO(1-0) transition, and the color excess, E(B-V)–is evaluated for the translucent molecular cloud MBM 16. The CH emission line and E(B-V) are well correlated with each other but not with the CO(1-0) emission line. It is likely that in translucent molecular clouds CO is not a linear tracer of the molecular hydrogen column density because, in these objects, the CO/H2ratio is undergoing rapid fluctuations as a function of the molecular hydrogen column density. For translucent and diffuse molecular clouds, and possibly for the translucent envelopes of giant molecular clouds, CH observations should be used to calibrate the CO to H2conversion factor.

Abstract Copyright: ∼

Journal keyword(s): ISM: Abundances - ISM: Clouds - ISM: Molecules - Molecular Processes

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MBM 16 MoC 03 19 04.1 +11 34 52           ~ 67 0

Query : 2003ApJ...586.1111M

Basic data :
MBM 16 -- Molecular Cloud
Other object types: otypes_help 		MoC (MBM)
ICRS coord. (ep=J2000) : 		03 19 04.1 +11 34 52 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		03 16 20.0 +11 24 00 [ ]
Gal coord. (ep=J2000) : 		170.6031 -37.2727 [ ]
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MBM 16

References (67 between 1850 and 2026) (Total 67)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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