Limits on the X-ray emission from several hyperluminous IRAS galaxies

October 1998 • 1998MNRAS.300L...7W

Authors • Wilman, R. J. • Fabian, A. C. • Cutri, R. M. • Crawford, C. S. • Brandt, W. N.

Abstract • We report long, pointed ROSAT HRI observations of the hyperluminous galaxies IRAS F00235+1024, F12514+1027, F14481+4454 and F14537+1950. Two of them are optically classified as Seyfert-like. No X-ray sources are detected at the positions of any of the objects, with a mean upper limit L_X/L_Bol~=2.3x10^-4. This indicates that any active nuclei are either atypically weak at X-ray wavelengths or obscured by column densities N_H>10^23cm^-2. They differ markedly from `ordinary' Seyfert 2 galaxies, bearing a closer resemblance in the soft X-ray band to composite Seyfert 2 galaxies or to some types of starburst.

Links

• PREPRINT http://arxiv.org/abs/astro-ph/9808324
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/1998MNRAS.300L...7W
• ELECTR http://dx.doi.org/10.1046/j.1365-8711.1998.02047.x
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=1998MNRAS.300L...7W
• PDF https://academic.oup.com/mnras/pdf-lookup/doi/10.1046/j.1365-8711.1998.02047.x
• DATA http://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/biblink.pl?code=1998MNRAS.300L...7W
• GIF http://articles.adsabs.harvard.edu/full/1998MNRAS.300L...7W
• ARTICLE http://articles.adsabs.harvard.edu/full/1998MNRAS.300L...7W?defaultprint=YES
• SPIRES http://inspirehep.net/search?p=find+eprint+astro-ph/9808324