Interstellar formaldehyde in Sagittarius B2

Details Interstellar formaldehyde in Sagittarius B2 Interstellar formaldehyde in Sagittarius B2

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pazh....6..763g&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 6, Nov.-Dec. 1980, p. 763-767.) Soviet Astronomy Letters, vol. 6, Nov.-Dec. 1980, p. 40

Astronomy and Astrophysics

Astronomy

1

Absorption Spectra, Formaldehyde, Interstellar Matter, Molecular Absorption, Optical Thickness, Radial Velocity, Radiative Recombination, Radio Astronomy

Scientific paper

Measurements of the 6.2-cm absorption line of the formaldehyde (H2CO) molecule have been obtained with a radio telescope having a resolution of 0.8 x 12 arcmin. The distribution of H2CO optical depth over the radio source Sgr B2 indicates that a gas envelope 11 pc in diameter may be present with a mean radial velocity close to the recombination-line velocities. The envelope is contracting at a rate of 20-25 km/sec and rotating at a peripheral velocity of 15 km/sec. The contraction in the central part of the molecular cloud surrounding Sgr B2 implies that it has a very short lifetime: roughly 5 x 10 to the 5th yr for matter in free fall.

Affiliated with

Also associated with

No associations

Rating

Interstellar formaldehyde in Sagittarius B2 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 formaldehyde in Sagittarius B2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interstellar formaldehyde in Sagittarius B2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-757902