A Variable [OIII] Emission Source in Black Hole Host Globular Cluster RZ2109
Abstract
We present a optical spectra from an ongoing monitoring program of black hole hosting globular RZ2109 located in the Virgo elliptical NGC4472. The collected low ( 400) to moderate ( 2000) resolution spectra span a 5 year period from 2007-2013. The cluster's spectra display extremely broad [O III]4959,5007 lines with widths of ~3000 km/s and a noteworthy lack of any other strong emission feature. Over the period of monitoring the [O III] emission line feature displays behaviors ranging from multi-year spans with only minor variability to active periods of 25 percent or more year-over-year changes in line luminosity. In this work we examine the variability of the [O III] emission line source luminosity and line profile, and consider the implications of these observations on models of the RZ209 accreting black hole and it's interaction with the cluster environment.
- Publication:
-
American Astronomical Society Meeting Abstracts #223
- Pub Date:
- January 2014
- Bibcode:
- 2014AAS...22344243S