Interstellar H2 toward HD 37903

Details Interstellar H2 toward HD 37903 Interstellar H2 toward HD 37903

2010-02-26

arxiv.org/abs/1002.4940v5

A&A, 532, A122 (2011)

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Scientific paper

We present an analysis of interstellar H2 toward HD 37903, which is a hot, B 1.5 V star located in the NGC 2023 reflection nebula. Meyer et al. (2001) have used a rich spectrum of vibrationally excited H2 observed by the HST to calculate a model of the interstellar cloud toward HD 37903. We extend Mayer's analysis by including the v"=0 vibrational level observed by the FUSE satellite. The T01 temperature should not be interpreted as a rotational temperature, but rather as a temperature of thermal equilibrium between the ortho and para H2. The ortho to para H2 ratio is lower for collisionally populated levels than for the levels populated by fluorescence. The PDR model of the cloud located in front of HD 37903 points to a gas temperature Tkin=110-377 K, hydrogen density nH=1874-544 cm^-3 and the star-cloud distance of 0.45 pc.

Affiliated with

Also associated with

No associations

Rating

Interstellar H2 toward HD 37903 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Interstellar H2 toward HD 37903, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar H2 toward HD 37903 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-289310