255 citations · 492 across the 6 of their papers we have counts for
5 papers · 1 filter
The application of slim disk models to ULX: the case of M33 X-8
L. Foschini, K. Ebisawa, T. Kawaguchi +8
A comparative XMM-Newton archival data spectral study of the ultraluminous X-ray source (ULX) M33 X-8 has been performed by using both the standard disk model and the newly develop…
Masses of star clusters in the nuclei of bulge-less spiral galaxies
C. J. Walcher, R. P. van der Marel, D. McLaughlin +6
In the last decade star clusters have been found in the centers of spiral galaxies across all Hubble types. We here present a spectroscopic study of the exceptionally bright (10^6…
Testing Radiatively-Inefficient Accretion Flow Theory: an XMM-Newton Observation of NGC 3998
A. Ptak, Y. Terashima, L. C. Ho +1
We present the results of a 10 ks XMM-Newton observation of NGC 3998, a ``type-I'' LINER galaxy. Our goal is to test the extent to which radiatively-inefficient accretion flow (RIA…
Yet another galaxy identification for an ultraluminous X-ray source
N. Masetti, L. Foschini, L. C. Ho +4
We report on the identification of the optical and infrared counterparts of the ultraluminous X-ray source (ULX) XMMU J121214.5+131248 (NGC4168-ULX1). The optical spectrum yields a…
XMM-Newton observations of ultraluminous X-ray sources in nearby galaxies
L. Foschini, G. Di Cocco, L. C. Ho +9
An XMM-Newton study of ultraluminous X-ray sources (ULX) has been performed in a sample of 10 nearby Seyfert galaxies. Eighteen ULX have been found with positional uncertainty of a…