Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26at...25..415m&link_type=abstract
Astronomical and Astrophysical Transactions, vol. 25, Issue 5, p.415-418
Astronomy and Astrophysics
Astrophysics
Scientific paper
The results of the emission line study of the optical spectrum of the Seyfert galaxy NGC 3227 nucleus are presented. 53 spectra obtained during the maximum nucleus brightness on 12-15 January 1977 with the 6 m telescope were the basis of the investigations. It was shown that the profiles of the hydrogen lines broadened during 3 days. The amounts of broadening at the 0.5 intensity level of the H, H and H line profile peaks were 12, 35 and 44%, respectively. The H line profile broadening was accompanied by a decrease in its equivalent width EW. The increase in the eqiuvalent width EW[O III] of the [O III] line during 3 days was more than 3. It was assumed that a 3 day flare is observed in the galaxy nucleus, which could be caused by shock in long-lived flows from the galaxy nucleus.
Metik L. P.
Pronik I. I.
Sharipova L. M.
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