On the possible interaction of two gas systems in the galaxy NGC 1275 - Spectrophotometric data

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Astrophysics (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF01006498· OSTI ID:6021390

Afanasev, V L ^[1]; Pronik, I I ^[2]

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1. Spetsial'naia Astrofizicheskaia Observatoriia, Zelenchukskaya, USSR
2. Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian SSR

Data are obtained on the brightness and relative intensities of the forbidden O II line at 3727 A, the H-beta line, the forbidden O III line at 5007 A, the H-alpha line, and the forbidden N II line at 6583 A in the emission spectrum of two gas systems in the central region of NGC 1275. The spectral observations are made with an image tube spectrograph at the direct focus of the 6-m telescope. Interesting physical conditions are found in the neighborhood of two details: a knot 3-arcsec to the northwest and a detail 7-arcsec to the northeast of the center of NGC 1275. Bright low-velocity gas is observed near the first detail and bright high-velocity gas near the second. It is noted that the entire region is characterized by a high temperature and/or degree of ionization of the gas clouds of both the gas systems discovered by Minkowski. In this region, a gas stream having velocities of several thousand km/sec has already been found. The data are thought to suggest that there are two systems of gas which interact in this region of NGC 1275.

• OSTI ID: 6021390
• Journal Information: Astrophysics (Engl. Transl.); (United States), Journal Name: Astrophysics (Engl. Transl.); (United States) Vol. 16:3; ISSN ATPYA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BRIGHTNESS
EMISSION SPECTRA
GALAXIES
NEBULAE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPECTRA