WFPC2 observations of the cooling flow elliptical in Abell 1795

被引：38

作者：

Pinkney, J

Holtzman, J

Garasi, C

Watson, AM

Gallagher, JS

Ballester, GE

Burrows, CJ

Casertano, S

Clarke, JT

Crisp, D

Evans, RW

Griffiths, RE

Hester, JJ

Hoessel, JG

Mould, JR

Scowen, PA

Stapelfeldt, KR

Trauger, JT

Westphal, JA

机构：

[1] AUSTRALIAN NATL UNIV, MT STROMLO & SIDING SPRING OBSERV, WESTON, ACT 2611, AUSTRALIA

[2] UNIV WISCONSIN, DEPT ASTRON, MADISON, WI 53706 USA

[3] UNIV MICHIGAN, DEPT ATMOSPHER OCEAN & SPACE SCI, ANN ARBOR, MI 48109 USA

[4] SPACE TELESCOPE SCI INST, BALTIMORE, MD 21218 USA

[5] ESA, DEPT SPACE SCI, DIV ASTROPHYS, BALTIMORE, MD 21218 USA

[6] CALTECH, JET PROP LAB, PASADENA, CA 91109 USA

[7] JOHNS HOPKINS UNIV, DEPT ASTRON, BALTIMORE, MD 21218 USA

[8] ARIZONA STATE UNIV, DEPT PHYS & ASTRON, TEMPE, AZ 85287 USA

[9] CALTECH, DIV GEOL & PLANETARY SCI, PASADENA, CA 91125 USA

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 468卷 / 01期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

dust; extinction; galaxies; clusters; general; elliptical and lenticular; cD;

D O I：

10.1086/310219

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present WFPC2 images of the core of the cooling flow cD galaxy in Abell 1795. An irregular, asymmetric dust lane extends 7 h(75)(-1) kpc in projection to the north-northwest. The dust shares the morphology observed in the Ha and excess UV emission. We see both diffuse and knotty blue emission around the dust lane, especially at the ends. The dust and emission features lie on the edge of the radio lobes, suggesting star formation induced by the radio source or the deflection of the radio jets off of preexisting dust and gas. We measure an apparent R(V) significantly less than 3.1, implying that the extinction law is not Galactic in the dust lane, or the presence of line emission that is proportional to the extinction. The dust mass is at least 2 x 10(5) h(75)(-2) M. and is more likely to be 6.5 x 10(5) h(75)(-2) M..

引用

页码：L13 / +

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