Investigation of the nuclear region of the Seyfert Galaxy NGC 1275

Details Investigation of the nuclear region of the Seyfert Galaxy NGC 1275 Investigation of the nuclear region of the Seyfert Galaxy NGC 1275

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984afz....21..233m&link_type=abstract

(Astrofizika, vol. 21, Sept.-Oct. 1984, p. 233-244) Astrophysics (ISSN 0571-7132), vol. 20, no. 5, March 1985, p. 470-478. Trans

Astronomy and Astrophysics

Astrophysics

6

Astronomical Photometry, Galactic Nuclei, Galactic Structure, Seyfert Galaxies, H Alpha Line, Halos, Interstellar Gas

Scientific paper

New data are given on the structure of the region around the nucleus of the Seyfert galaxy NGC 1275 and the nucleus itself. Direct plates obtained with the 6-m telescope with red and blue glass filters were used. The scale of the images on the negatives was 17.5 arcsec/mm. The galaxy NGC 1275 has a double nucleus. The position angle of the line joining the components of the nucleus is about 5 deg. The distance between the components, projected onto the celestial sphere, is 1.50 arcsec + or - 0.60 arcsec (or 500 + or - 20 pc). Each of the components is less than 1.0 arcsec, and they are both variable. During the time of the observations (20 min), the brightness of the components varied by almost 2.5-3 times. A bar has been discovered between the nucleus of the galaxy and the object 7 arcsec to the northeast of the nucleus; there is evidence which suggests that the bar consists of stars of both early and late spectral classes. The age of the bar (or the time of interaction of the nucleus and the 7 arcsec object) is not less than 10 to the 8th yrs. Other observed details of the galaxy indicate a complicated nature of the interaction between the nucleus and the 7 arcsec object.

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