NGC 6212 - an X-ray-selected active elliptical galaxy

Journal Article · Thu May 01 00:00:00 EDT 1986 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114078· OSTI ID:5266397

Halpern, J P; Filippenko, A V

Optical and X-ray data on the elliptical galaxy NGC 6212 are reported. The X-ray flux varies by a factor of four on a time scale of months. The optical spectrum shows broad Balmer emission lines and narrow forbidden lines which are typical of low-luminosity X-ray selected Seyfert galaxies. The continuum is predominantly stellar, with no evidence for a nonthermal contribution. Narrow emission lines extend at least 11 kpc from the nucleus and are used to derive a rotation curve. The X-ray variability and relatively weak radio emission of NGC 6212 are not unusual for Seyfert galaxies. 30 references.

• Research Organization: Columbia Univ., New York; California Univ., Berkeley
• OSTI ID: 5266397
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 91; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BALMER LINES
CONFIGURATION
ELECTROMAGNETIC RADIATION
ELLIPTICAL CONFIGURATION
EMISSION SPECTRA
GALAXIES
GALAXY NUCLEI
IONIZING RADIATIONS
RADIATIONS
RADIOWAVE RADIATION
SEYFERT GALAXIES
SPECTRA
VARIATIONS
VISIBLE SPECTRA
X RADIATION