[NeV] Emission and Ultraluminous X-ray Sources in Two Low-metallicity Blue Compact Dwarf Galaxies
Abstract
We propose to observe two extremely metal-poor Blue Compact Dwarf (BCD) galaxies, Tol 1214-277 and HS0837+4717, as nearby proxies for studying hard radiation at high z. These BCDs are remarkable due to their strong [Ne V] 3426 emission, i.e., ionizing radiation with E>100eV. We wish to verify directly with Chandra that each BCD contains an X-ray source with L(X)>~1e39 erg/s, as predicted by photoionization models. We expect modest yet robust detections which can highlight spectral extremes and XRB locations relative to [Ne V]. Null detections would provide strong constraints for ionization models. By enlarging the number of known BCDs with ULXs (7 to date) and ULX/[Ne V] detections (1), we will be able to investigate trends of L(X) with other BCD properties.
- Publication:
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Chandra Proposal
- Pub Date:
- September 2013
- Bibcode:
- 2013cxo..prop.3828T