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A Search for Intra-group Planetary Nebulae in the M81 Group

Published online by Cambridge University Press:  26 May 2016

John J. Feldmeier ,
Patrick R Durrell ,
Robin Ciardullo  and
George H. Jacoby
John J. Feldmeier
Affiliation:
Case Western Reserve University, 10900 Euclid Ave. Cleveland, OH 44106, U.S.A.
Patrick R Durrell
Affiliation:
Penn State University, 525 Davey Lab, University Park, PA 16802, U.S.A.
Robin Ciardullo
Affiliation:
Penn State University, 525 Davey Lab, University Park, PA 16802, U.S.A.
George H. Jacoby
Affiliation:
WIYN Observatory, P.O. Box 26732, Tucson AZ 85726, U.S.A.

Abstract

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We present the initial results from an [O III] λ 5007 survey for intra-group planetary nebulae in the M 81 group of galaxies. A total of 0.36 square degrees of the survey have been analyzed thus far, and a total of four intra-group candidates have been detected. These data allow us to probe the physics of galaxy interactions in small groups, and give us an upper limit for the density of intracluster starlight. We find that the M 81 group has less than 3% of its stars in an intra-group component; this is much less than the fraction seen in richer galaxy clusters.

Type
Part VIII: Planetary Nebulae as Galaxy Probes
Information
Symposium - International Astronomical Union , Volume 209: Planetary Nebulae: Their Evolution and Role in the Universe , 2003 , pp. 605 - 606
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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