Highly excited molecular hydrogen in M 42 and other nebulae

Details Highly excited molecular hydrogen in M 42 and other nebulae Highly excited molecular hydrogen in M 42 and other nebulae

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...213..323h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 213, no. 1-2, April 1989, p. 323-332.

Astronomy and Astrophysics

Astrophysics

8

Hydrogen Clouds, Infrared Spectra, Molecular Clouds, Nebulae, Orion Nebula, Fabry-Perot Interferometers, Gas Density, Radial Velocity, Shock Waves, Spectral Line Width

Scientific paper

Measurements of the S(5), S(7), S(10), and S(11) quadrupole lines of the (2,0) band of H2 in the Orion Nebula (M 42) are presented. These measurements showed the following features: (1) the radial velocity characteristics consistent with those of microwave lines emitted by the Orion Molecular Cloud (OMC); (2) an intrinsic line width of 4.7 km/sec, exceeding that measured in microwave lines; (3) a surface brightness distribution in S(11) with a nearly circular symmetry around and a maximum at the Trapezium; (4) and a net column density of vibrationally excited H2 that can be accounted for by fluorescent excitation models with parameters appropriate for the OMC. A rotational temperature of about 11,000 K was observed, in excess of that predicted by radiative excitation.

Affiliated with

Also associated with

No associations

Rating

Highly excited molecular hydrogen in M 42 and other nebulae 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 Highly excited molecular hydrogen in M 42 and other nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly excited molecular hydrogen in M 42 and other nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1734642