천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제37권1호
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- Pages.49.2-49.2
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- 2012
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- 1226-2692(pISSN)
Hot gas halo in early type galaxies and their environments
- Kim, Eun-Bin (Kyung Hee University) ;
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Choi, Yun-Young
(Kyung Hee University) ;
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Kim, Sung-Soo S.
(Kyung Hee University) ;
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Park, Chang-Bum
(Korea Institute for Advanced Study)
- 발행 : 2012.04.03
초록
We present an investigation of X-ray hot gas halo in 12 isolated early-type galaxies from cross-matched sample of XMM-Newton and SDSS DR 7(0.025 < z < 0.08588 and Mr <-19.5). Isolated galaxies that the separation between galaxy and the closest neighbor is farther than its virial radius are not affected by environments, and their X-ray hot gas halo can be studied without contribution of intragalactic medium in all circumstances. We find that isolated galaxies in low density have correlation of
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