Investigation of the cometary nebula Parsamyan 21

Journal Article · Wed May 01 04:00:00 EDT 1985 · Astrophysics (Engl. Transl.); (United States)

OSTI ID:5765586

Petrosyan, V M

The results are given of an isodensitometric and spectrophotometric investigation of the cometary nebula P 21 and its associated nucleus. The shape of the isodensities of the nucleus differs from those for normal stars, and in this the nucleus recalls R Mon. A spectral investigation of the nucleus of P 21 made on the basis of observations during 1981-1982 shows that it is a star of the class F2-F5V with an envelope expanding at about 120 km/sec.

• Research Organization: Byurakan Astrophysical Observatory
• OSTI ID: 5765586
• Journal Information: Astrophysics (Engl. Transl.); (United States), Journal Name: Astrophysics (Engl. Transl.); (United States) Vol. 20:6; ISSN ATPYA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ALKALINE EARTH METALS
BALMER LINES
BRIGHTNESS
CALCIUM
COMETS
ELEMENTS
EMISSION SPECTRA
EXPANSION
HYDROGEN
LUMINOSITY
METALS
NEBULAE
NONMETALS
OPTICAL PROPERTIES
PHOTOGRAPHY
PHYSICAL PROPERTIES
RADIAL VELOCITY
SPECTRA
SPECTROPHOTOMETRY
VELOCITY