Statistics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.0610d&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #06.10; Bulletin of the American Astronomical Society, Vol. 31, p.830
Statistics
Scientific paper
We present the results from a comparative study of two ROSAT High Resolution Imager (HRI) observations of the composite starburst/Seyfert 2 galaxy NGC 1672. This galaxy is known to show X-ray sources near the ends of its strong bar as well as extended X-ray emission near the nucleus. We have resolved one of the sources at an end of the bar into 2--3 components, and we find that the brightest of these appears to show significant variability on a timescale of ~ 4.5 years. This source is probably a highly luminous X-ray binary or the highly luminous remnant of a recent supernova. In addition, the improved photon statistics suggest the presence of large-scale diffuse X-ray emission that is probably associated with a hot interstellar medium. We also find evidence for several new, faint X-ray sources. New CTIO optical spectra of the nucleus of NGC 1672 are consistent with previous studies which revealed spatially resolved emission-line ratios consistent with a composite starburst/Seyfert 2 nature.
Brandt Wiliam N.
de Naray P. J.
Halpern Jules P.
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