Signatures of Interstellar-Intracluster Medium Interactions: Spiral Galaxy Rotation Curves in Abell 2029
- Creators
-
Dale, Daniel A.
- Uson, Juan M.
Abstract
We investigate the rich cluster Abell 2029 (z ~ 0.08) using optical imaging and long-slit spectral observations of 52 disk galaxies distributed throughout the cluster field. No strong emission-line galaxies are present within ~400 kpc of the cluster center, a region largely dominated by the similarly shaped X-ray and low surface brightness optical envelopes centered on the giant cD galaxy. However, two-thirds of the galaxies observed outside the cluster core exhibit line emission. Hα rotation curves of 14 cluster members are used in conjunction with a deep I-band image to study the environmental dependence of the Tully-Fisher relation. The Tully-Fisher zero point of Abell 2029 matches that of clusters at lower redshifts, although we do observe a relatively larger scatter around the Tully-Fisher relation. We do not observe any systematic variation in the data with projected distance to the cluster center. We see no environmental dependence of Tully-Fisher residuals, R-I color, Hα equivalent width, or the shape and extent of the rotation curves.
Additional Information
© 2000. The American Astronomical Society. Received 2000 March 1; accepted 2000 April 11. We would like to thank Riccardo Giovanelli and Jacqueline van Gorkom for many helpful comments and Martha Haynes for her assistance in the preparation of the observing run. We thank Steve Boughn for his permission to use the unpublished I-band mosaic observations of Abell 2029. J. M. U. wishes to thank Professor A. Morales for his hospitality and the "Fundación BBV" for its financial support of a sabbatical leave at the Laboratorio de Fisica Nuclear of the Universidad de Zaragoza (Spain) during which this paper was completed. The results presented here are based on observations carried out at the Palomar Observatory (PO) and at the Kitt Peak National Observatory (KPNO). KPNO is operated by Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation. The Hale Telescope at the PO is operated by the California Institute of Technology under a cooperative agreement with Cornell University and the Jet Propulsion Laboratory. The NASA/IPAC Extragalactic Database is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The NRAO is a facility of the National Science Foundation, which is operated under cooperative agreement by Associated Universities, Inc. This research was supported by NSF grant AST 96-17069.Attached Files
Published - pdf
Accepted Version - 0004148v1.pdf
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Additional details
- Eprint ID
- 76298
- Resolver ID
- CaltechAUTHORS:20170408-170946790
- Fundación BBV
- NSF
- AST-9617069
- NASA/JPL/Caltech
- Created
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2018-03-12Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)