ASCA observations of three Shakhbazyan's Compact Groups of Galaxies

Citation
I. Takahashi et al., ASCA observations of three Shakhbazyan's Compact Groups of Galaxies, PUB AST S J, 52(5), 2000, pp. 769-774
Citations number
27
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
ISSN journal
00046264 → ACNP
Volume
52
Issue
5
Year of publication
2000
Pages
769 - 774
Database
ISI
SICI code
0004-6264(2000)52:5<769:AOOTSC>2.0.ZU;2-T
Abstract
X-ray observations of three Shakhbazyan's Compact Groups of Galaxies are pr esented for the first time. Extended X-ray emission was detected from SCGG 202 and SCGG 223 with 0.5-2 keV luminosity of 1 x 10(42) erg s(-1) and 3 x 10(42) erg s(-1) (for H-0 = 75 km s(-1) Mpc(-1)), respectively, while no si gnificant emission was detected from SCGG 205 with an upper limit of 0.7 x 10(42) erg s(-1). The X-ray spectra of SCGG 202 and SCGG 223 can be describ ed with thin-thermal plasma emission with a temperature of about 1 keV. The X-ray properties of SCGG 202 and SCGG 223 are in good agreement with those of other known groups of galaxies, proving the physical nature of their gr ouping.