Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pazh....8..210m&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 8, Apr. 1982, p. 210-213.) Soviet Astronomy Letters, vol. 8, Mar.-Apr. 1982, p. 111-113
Astronomy and Astrophysics
Astronomy
Astronomical Photometry, Astronomical Spectroscopy, Galactic Nuclei, Line Spectra, Spectrophotometry, Abundance, Emission Spectra, Forbidden Transitions, H Beta Line, Nitrogen Ions, Sulfur
Scientific paper
A spectrophotometric analysis of 6-m telescope spectra of the galaxy Arakelyan 144 shows strong forbidden lines of S(+), implying a very high gas electron temperature. The H-beta flux density and luminosity are 3.16 x 10 to the -15th erg/sq cm per sec and 4.8 x 10 to the 39th erg/sec, respectively. Gas mass is 1000 solar masses. The UV emission of about 2000 07 V stars would be sufficient to maintain the gas in ionization-recombination equilibrium. While the relative abundance of S(+) ions is an order of magnitude higher than average for the various types of emission-line objects, the N(+) abundance is typical for galaxies of all types other than Seyfert 1.
Golev V. K.
Mineva V. A.
Petrov G. T.
Tsvetanov Zlatan I.
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