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WFPC2 Observations of the Cooling Flow Elliptical in Abell 1795
Author(s) -
Jason Pinkney,
Jon A. Holtzman,
Christopher J. Garasi,
A. M. Watson,
J. S. Gallagher,
G. E. Ballester,
Christopher J. Burrows,
Stefano Casertano,
J. T. Clarke,
David Crisp,
Robin W. Evans,
R. E. Griffiths,
J. J. Hester,
J. G. Hoessel,
J. R. Mould,
Paul A. Scowen,
Karl R. Stapelfeldt,
John T. Trauger,
James A. Westphal
Publication year - 1996
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/310219
Subject(s) - astrophysics , physics , galaxy , extinction (optical mineralogy) , cooling flow , dust lane , star formation , astronomy , radio galaxy , optics
We present WFPC2 images of the core of the cooling flow cD galaxy in Abell1795. An irregular, asymmetric dust lane extends 7 \h75 kpc in projection tothe north-northwest. The dust shares the morphology observed in the H$\alpha$and excess UV emission. We see both diffuse and knotty blue emission around thedust lane, especially at the ends. The dust and emission features lie on theedge of the radio lobes, suggesting star formation induced by the radio sourceor the deflection of the radio jets off of pre-existing dust and gas. Wemeasure an apparent R$_V$ significantly less than 3.1, implying that theextinction law is not Galactic in the dust lane, or the presence of lineemission which is proportional to the extinction. The dust mass is at least2$\times10^{5} h_{75}^{-2}$ M\solar\ and is more likely to be 6.5$\times10^{5}h_{75}^{-2}$ M\solar.Comment: 14 pages, LaTeX, Figure 4 included, Postscript Figs. 1-3 available at ftp://astro.nmsu.edu/pub/JASON/A1795/, accepted for publication in ApJ Letter

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