High resolution Fourier transform spectroscopy of H_2 IR emission in NGC 7023

Details High resolution Fourier transform spectroscopy of H_2 IR emission in NGC 7023 High resolution Fourier transform spectroscopy of H_2 IR emission in NGC 7023

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...349..253l&link_type=abstract

Astronomy and Astrophysics, v.349, p.253-258 (1999)

Astronomy and Astrophysics

Astrophysics

16

Ism: Clouds, Ism: Individual Objects:, Ism: Kinematics And Dynamics, Ism: Lines And Bands, Ism: Molecules, Ism: Reflection Nebulae

Scientific paper

A Fourier transform spectrum at a resolution of ~ 125,000 has been recorded of molecular hydrogen emission in the reflection nebula NGC 7023, in the S(1) v=1-0 line at 2.121 mu m for a region 5 arcsec in diameter. The line is resolved and the derived linewidth corresponds to a kinetic temperature of 500+/- 70 K, if all motions are thermal. Comparison with data for HI, CI, CII and CO shows that there is a velocity gradient in the molecular material in the photodissociation region, demonstrating the motion of the photodissociation front relative to the molecular cloud. Models of the photodissociation region experience only limited success in reproducing the known brightness of the H_2 emission in conjunction with the kinetic temperature determined here. Visiting astronomers (JPM, JLL, DF, EF) at the Canada-France-Hawaii Telescope, operated by the National Research Council of Canada, the Centre National de la Recherche Scientifique de France and the University of Hawaii

Affiliated with

Also associated with

No associations

Rating

High resolution Fourier transform spectroscopy of H_2 IR emission in NGC 7023 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 High resolution Fourier transform spectroscopy of H_2 IR emission in NGC 7023, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High resolution Fourier transform spectroscopy of H_2 IR emission in NGC 7023 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1766035