Interstellar H3+ Line Absorption Toward LkHα 101

Details Interstellar H3+ Line Absorption Toward LkHα 101 Interstellar H3+ Line Absorption Toward LkHα 101

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.1507b&link_type=abstract

American Astronomical Society Meeting 204, #15.07; Bulletin of the American Astronomical Society, Vol. 36, p.680

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a detection of three lines of the H3+ ion in the near-infrared spectrum of the Herbig Be star, LkHα 101. H3+ is the principal initiator of gas phase chemistry in interstellar clouds and can be used to constrain the ionization rate or the path length through interstellar material along the line of sight. Essentially all of the observed H3+ column of 2.2±0.3 x 1014 cm-2 toward LkHα 101 originates in the same dense, dark cloud; less than 1 magnitude of the 11 total magnitudes of visual extinction is attributable to diffuse material. The non-detection of fluorescent H2 emission at the cloud surface implies that the obscuring dark cloud is located at least 20pc from LkHα 101 and is therefore decoupled from its evolution. The confirmation of significant H3+ in dense material addresses earlier concerns that H3+ may originate in diffuse material surrounding dense clouds.
This work was supported by the National Science Foundation.

Affiliated with

Also associated with

No associations

Rating

Interstellar H3+ Line Absorption Toward LkHα 101 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 H3+ Line Absorption Toward LkHα 101, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar H3+ Line Absorption Toward LkHα 101 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1170651