Unusual features of the 1-4 micron spectrum of HR 4049

Details Unusual features of the 1-4 micron spectrum of HR 4049 Unusual features of the 1-4 micron spectrum of HR 4049

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...340l..29g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 340, May 1, 1989, p. L29-L32. Research supported by SERC, NSERC,

Other

49

Active Galactic Nuclei, Astronomical Spectroscopy, Interstellar Chemistry, Pre-Main Sequence Stars, Cosmic Dust, Early Stars, Emission Spectra, Stellar Envelopes, Ultraviolet Radiation

Scientific paper

Moderate resolution spectra from 1.05 to 3.65 microns of the post-AGN star HR 4049 show a number of features indicative of intense mass loss and unusual circumstellar chemistry. These are deep Brackett series absorption lines to rather high n states, emission in the 3.29 and 3.40 microns 'dust' features, and the rarely occurring emission features near 3.5 microns. HR 4049 is only the third star in which the 3.5micron features have been reported; the other two stars are premain-sequence objects. The physical and chemical conditions for the production of the (unknown) molecule responsible for this emission appear to be highly constrained.

Affiliated with

Also associated with

No associations

Rating

Unusual features of the 1-4 micron spectrum of HR 4049 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 Unusual features of the 1-4 micron spectrum of HR 4049, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unusual features of the 1-4 micron spectrum of HR 4049 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1874208