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WFPC2 observations of the cooling flow elliptical in Abell 1795

Pinkney, Jason and Holtzman, Jon and Garasi, Christopher and Watson, Alan M. and Gallagher, John S., III and Ballester, Gilda E. and Burrows, Christopher J. and Casertano, Stefano and Clarke, John T. and Crisp, David and Evans, Robin W. and Griffiths, Richard E. and Hester, J. Jeff and Hoessel, John G. and Mould, Jeremy R. and Scowen, Paul A. and Stapelfeldt, Karl R. and Trauger, John T. and Westphal, James A. (1996) WFPC2 observations of the cooling flow elliptical in Abell 1795. Astrophysical Journal, 468 (1). L13-L16. ISSN 0004-637X. doi:10.1086/310219.

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We present WFPC2 images of the core of the cooling flow cD galaxy in Abell 1795. An irregular, asymmetric dust lane extends 7 h^(-1)/75 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^(-2)/75 M_☉ and is more likely to be 6.5 x 10^5 h^(-2)/75 M_☉.

Item Type:Article
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URLURL TypeDescription
Gallagher, John S., III0000-0001-8608-0408
Crisp, David0000-0002-4573-9998
Mould, Jeremy R.0000-0003-3820-1740
Stapelfeldt, Karl R.0000-0002-2805-7338
Additional Information:© 1996 American Astronomical Society. Received 1996 February 9; accepted 1996 June 19. Based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, operated by AURA, Inc., under contract to NASA. We thank B. McNamara for providing the digitized radio image. We are grateful to R. Walterbos, and J. O. Burns for engaging discussions. We utilized the NED Database and the ADS Abstract service for our research. This work was supported in part by NASA under contract NAS7-918 to JPL.
Funding AgencyGrant Number
Subject Keywords:dust, extinction; galaxies, clusters, general; galaxies, elliptical and lenticular, cD
Issue or Number:1
Record Number:CaltechAUTHORS:20150115-090204449
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Official Citation:WFPC2 Observations of the Cooling Flow Elliptical in Abell 1795 Jason Pinkney et al. 1996 ApJ 468 L13
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53757
Deposited By: Ruth Sustaita
Deposited On:15 Jan 2015 18:52
Last Modified:10 Nov 2021 20:06

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