Soft X-rays from the low-mass starburst galaxy NGC 1705.

Details Soft X-rays from the low-mass starburst galaxy NGC 1705. Soft X-rays from the low-mass starburst galaxy NGC 1705.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..379h&link_type=abstract

International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 379 - 380

Astronomy and Astrophysics

Astrophysics

2

Starburst Galaxies: X Rays, Starburst Galaxies: Dwarf Galaxies

Scientific paper

The dwarf galaxy NGC 1705 is one of the optically brightest and best studied low-mass galaxies and is characterized by strong star-formation activity. The authors present ROSAT PSPC observations of this galaxy which reveal strikingly two X-ray maxima enveloped by Hα loops. Because HST images with WFPC2 confirmed one central super-star cluster a plausible model can be constructed where both X-ray blobs belong to one single superbubble which is expanding out of the H I disk. The X-ray spectrum however turned out to be exceptionally soft in comparison to other starburst dwarf galaxies and is not consistent with the measured H I column density in direction of NGC 1705. Temperature and X-ray flux also differ from other similar starburst sources.

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