Multiphase Gas and Star Formation in Cluster Cores
2016-08-22
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Multiphase Gas and Star Formation in Cluster Cores
Authors
Published Date
2016-08-22
Publisher
Type
Presentation
Abstract
We will present new Hubble Space Telescope COS and STIS spectroscopy of the central knots in the Brightest Cluster Galaxy in the CLASH cluster RXJ1532.9+3021. X-ray observations show this cluster hosts a radio AGN that has excavated large holes in the X-ray intracluster medium. The X-ray gas in the core of this cluster is extremely luminous. Although the star formation visible in the cluster is higher than that of many starburst galaxies (> 100 solar masses per year, estimated from FIR and UV -based SFRs), the AGN appears to preventing a far higher rate of star formation. We place very strong limits on the rate of gas cooling from intermediate gas temperatures (~1 million K) using UV spectroscopy. The UV spectra from the center of this BCG bear a strong resemblance to that of the most extreme Lyman Break galaxies at z~3, including significant UV continuum and absorption line features from recently formed hot stars and Lyman alpha emission and Lyman beta absorption consistent with winds driven by hot stars. We will discuss the implications of the state of this system in context with the handful of other active BCGs that have spectroscopy at similar rest wavelengths.
Description
Related to
Replaces
License
Series/Report Number
Funding information
Isbn identifier
Doi identifier
Previously Published Citation
Suggested citation
Donahue, Megan. (2016). Multiphase Gas and Star Formation in Cluster Cores. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/181999.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.