Choice of Enumeration in Parallel Sequencing Problems

Shakhbazyan, K. V.

doi:10.1007/978-1-4615-8588-6_3

Cited by 3 publications

(1 citation statement)

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“…Shakhbazyan's compact groups of galaxies (SCGGs; Shakhbazyan 1973;Shakhbazyan and Petrosyan 1974;Baier et al 1974;Petrosyan 1974Petrosyan , 1978Baier and Tiersch 1975, 1976ab, 1978, 1979) comprise a large, relatively homogeneous, catalogue of galaxy groups, almost four times as large as the Hickson's catalogue. Generally, SCGGs have more member galaxies and a higher fraction of early-type galaxies than HCGs (Tiersch et al 1996).…”

Section: Introductionmentioning

confidence: 99%

ASCA Observations of Three Shakhbazyan's Compact Groups of Galaxies

Takahashi¹,

Fukazawa

Kodaira

et al. 2000

Publications of the Astronomical Society of Japan

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X-ray observations of three Shakhbazyan's Compact Groups of Galaxies, SCGG 202, SCGG 205, and SCGG 223, are presented for the first time. Extended X-ray emission was detected from SCGG 202 and SCGG 223 with 0.5-2 keV luminosity of 1 × 10 42 erg s −1 and 3 × 10 42 erg s −1 (for H 0 = 75 km s −1 Mpc −1 ), respectively, while no significant emission was detected from SCGG 205 with an upper limit of 0.7 × 10 42 erg s −1 . The X-ray spectra of SCGG 202 and SCGG 223 can be described with thin-thermal plasma emission with temperature about 1 keV. 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 grouping.

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Section: Introductionmentioning

confidence: 99%