FUSE Survey of Interstellar Molecular Hydrogen toward 130 Galactic Disk Sightlines

Details FUSE Survey of Interstellar Molecular Hydrogen toward 130 Galactic Disk Sightlines FUSE Survey of Interstellar Molecular Hydrogen toward 130 Galactic Disk Sightlines

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.6118s&link_type=abstract

American Astronomical Society Meeting 204, #61.18; Bulletin of the American Astronomical Society, Vol. 36, p.772

Astronomy and Astrophysics

Astronomy

2

Scientific paper

We present the results of a Far Ultraviolet Spectroscopic Explorer (FUSE) survey of interstellar molecular hydrogen in the Galactic disk. The survey includes 130 sightlines toward O- and B-type stars at Galactic latitudes b < 10 degrees. The targets stars range in distance from 0.5 to 5 kpc. We measure interstellar absorption in the H2 Lyman and Werner bands between 912 and 1120 Å, down to a column density threshold log N(H2) > 14.0. For each sightline, we report N(H2), together with column densities N(J) for rotation levels J = 0-6. These results are supplemented with N(H I) from a combination of 21 cm and Lyman-beta measurements. We use these column densities to derive the molecular fraction [mean f(H2) = 0.18], rotational temperature (mean T01 = 88 K), and rotational excitation conditions (Texc ranges from 600 K to 140 K for J = 2-6).
This work was supported by the FUSE Mission, with financial support from NASA Contract NAS5-32985 to Johns Hopkins University and a sub-contract to the University of Colorado at Boulder.

Affiliated with

Also associated with

No associations

Rating

FUSE Survey of Interstellar Molecular Hydrogen toward 130 Galactic Disk Sightlines 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 FUSE Survey of Interstellar Molecular Hydrogen toward 130 Galactic Disk Sightlines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and FUSE Survey of Interstellar Molecular Hydrogen toward 130 Galactic Disk Sightlines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1174382