Detailed three-color photometry of the Galaxies NGC 4145, 4151, 4156, and MCG 7-25-36, 48

Journal Article · Tue Jan 01 04:00:00 EST 1974 · Astrophysics (Engl. Transl.); (United States)

OSTI ID:7349086

Vorchkhadze, T M

The results are given of detailed three-color UBV photometry of NGC 4151, 4156, and MCG 7-25-46 and also the results of general photometry for MCG-7-25-48 and the nuclear region and seven associations of NGC 4145. Radial velocities are given for NGC 4156 and MCG 7-25-46. Brightness distribution charts in B are given together with the color indices U--B and B--V in them. For the Seyfert galaxy NGC 4151, the brightness distribution curve is given together with the color indices along the major and the minor axis and a two-color diagram for the areas that make up this galaxy. Photometric measurements revealed the existence in NGC 4151 of a blue amorphous aureole, which was apparently formed by the eruptive action of the nucleus. The color indices of a number of areas corresponding to the aureole indicate the presence of a nonthermal component in their radiation. The spiral arms of low surface brightness appear to emanate from the aureole.

• OSTI ID: 7349086
• Journal Information: Astrophysics (Engl. Transl.); (United States), Journal Name: Astrophysics (Engl. Transl.); (United States) Vol. 10:4; ISSN ATPYA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BRIGHTNESS
COLOR
DIAGRAMS
GALAXIES
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
RADIAL VELOCITY
SEYFERT GALAXIES
STRUCTURAL MODELS
VELOCITY