Ultraviolet spectrum of quasi-stellar object 3C273

Details Ultraviolet spectrum of quasi-stellar object 3C273 Ultraviolet spectrum of quasi-stellar object 3C273

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.269..203d&link_type=abstract

Nature, vol. 269, Sept. 15, 1977, p. 203-206. Research supported by the Alfred P. Sloan Foundation;

Mathematics

Logic

97

Astronomical Spectroscopy, Cosmology, Emission Spectra, Quasars, Ultraviolet Spectra, Absorption Spectra, Astronomical Models, Red Shift, Rocket-Borne Instruments, Spaceborne Telescopes

Scientific paper

The first direct observation of the ultraviolet spectrum of a quasi-stellar object (QSO) has been made with a rocket-borne telescope. The emission line spectrum of 3C273 is similar to the spectra of high-redshift QSOs, but no absorption is observed. The results provide important new constraints on theoretical models of QSOs, place a severe limit on the density of neutral hydrogen in the intergalactic medium, and suggest a cosmological origin for much of the absorption seen in high-redshift QSOs. Comparison of the ultraviolet spectrophotometry of low- and high-redshift QSOs suggests that the universe is closed, with a deceleration parameter of about 1.

Affiliated with

Also associated with

No associations

Rating

Ultraviolet spectrum of quasi-stellar object 3C273 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 Ultraviolet spectrum of quasi-stellar object 3C273, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet spectrum of quasi-stellar object 3C273 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1098874