HST STIS Observations of the Central Radio/X-Ray Source in the Compact Starburst Galaxy Henize 2-10

IAU Symposium Proceedings Series(2019)

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摘要
Based on radio and X-ray observations, it has been suggested that a black hole of mass similar to 10(6) M-circle dot resides in the dwarf suarburst galaxy Henize 2-10. This unusual finding has important implications for the formation of massive black holes in the early universe since Henize 2-10 can be viewed as a low redshift analog to the first high-z galaxies. We present long-slit HST STIS spectra that include the central radio/X-ray source. While recent VLT- MUSE spectroscopic observations with 0 ".7 seeing show no change in ionization near the central source, our higher spatial resolution STIS observations identify a distinct compact region at the location of the radio/X-ray source. Initial analysis reveals broader (FWHM similar to 380 km s(-1)) blue-shifted lines of low ionization. Our analysis focuses on testing two scenarios: a LINER-like AGN and a young (few decades) SNR.
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关键词
galaxies: dwarf,galaxies: starburst,galaxies: individual (Henize 2-10)
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