A SURVEY FOR PLANETARY NEBULAE IN M31 GLOBULAR CLUSTERS

Journal Article · Mon May 20 04:00:00 EDT 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/769/1/10· OSTI ID:22126660

Jacoby, George H. ^[1]; Ciardullo, Robin ^[2]; De Marco, Orsola ^[3]; Lee, Myung Gyoon ^[4]; Herrmann, Kimberly A. ^[5]; Hwang, Ho Seong; Davies, James E. ^[6]; Kaplan, Evan ^[7]

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1. Giant Magellan Telescope/Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)
2. Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)
3. Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109 (Australia)
4. Astronomy Program, Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of)
5. Lowell Observatory, Flagstaff, AZ 86001 (United States)
6. Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States)
7. Vassar College, 124 Raymond Ave., Poughkeepsie, NY 12604 (United States)

We report the results of an [O III] {lambda}5007 spectroscopic survey for planetary nebulae (PNe) located within the star clusters of M31. By examining R {approx} 5000 spectra taken with the WIYN+Hydra spectrograph, we identify 3 PN candidates in a sample of 274 likely globular clusters, 2 candidates in objects which may be globular clusters, and 5 candidates in a set of 85 younger systems. The possible PNe are all faint, between {approx}2.5 and {approx}6.8 mag down the PN luminosity function, and, partly as a consequence of our selection criteria, have high excitation, with [O III] {lambda}5007 to H{beta} ratios ranging from 2 to {approx}> 12. We discuss the individual candidates, their likelihood of cluster membership, and the possibility that they were formed via binary interactions within the clusters. Our data are consistent with the suggestion that PN formation within globular clusters correlates with binary encounter frequency, though, due to the small numbers and large uncertainties in the candidate list, this study does not provide sufficient evidence to confirm the hypothesis.

• OSTI ID: 22126660
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 769; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
EXCITATION
GALAXIES
GALAXY CLUSTERS
HYPOTHESIS
INTERACTIONS
LUMINOSITY
PLANETARY NEBULAE
SPECTRA
STAR CLUSTERS
STAR EVOLUTION