Far-Infrared [N\II.] Emission from SGR A West

Details Far-Infrared [N\II.] Emission from SGR A West Far-Infrared [N\II.] Emission from SGR A West

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.4404e&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #44.04; Bulletin of the American Astronomical Society, Vol. 25, p.1358

Astronomy and Astrophysics

Astronomy

Scientific paper

NASA's Kuiper Airborne Observatory was used in May 1993 to measure the 122 and 205 \mm. lines of [N\II.] in a ~ 1' beam centered on Sgr A(*) and encompassing the unusual H\II. region Sgr A West. The ratio of the measured line intensities, when compared with the electron-density dependence of the theoretical volume emissivity ratio, determines the density of the N(+) emitting gas. The resulting value is 1400(+infty }_{-400) cm(-3) , which is very close to the high density limit. This value is comparable to that which we obtain for S(++) , and about twice that for O(++) . The low critical density of the [N\II.] lines and the relatively high value of the density implied by their ratio suggests that there is little low-density N(+) gas in our beam. It is possible that most of the [N\II.] emission arises in the compact, high-density ( ~ 10(4) cm(-3) ) ionized spiral streamers unresolved in our beam, whereas the [S\III.] and [O\III.] lines probably originate in the lower density gas of the surrounding cavity.

Affiliated with

Also associated with

No associations

Rating

Far-Infrared [N\II.] Emission from SGR A West 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 Far-Infrared [N\II.] Emission from SGR A West, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Far-Infrared [N\II.] Emission from SGR A West will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-778718