2012MNRAS.420.1107P


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST05:52:43

2012MNRAS.420.1107P - Mon. Not. R. Astron. Soc., 420, 1107-1114 (2012/February-3)

X-ray spectral states and metallicity in the ultraluminous X-ray sources NGC 1313 X-1 and X-2.

PINTORE F. and ZAMPIERI L.

Abstract (from CDS):

We present a systematic analysis of the X-ray spectra of NGC 1313 X-1 and NGC 1313 X-2, using three years of XMM–Newton observations. We fitted the continuum with a Comptonization model plus a multicolour blackbody disc, which describes the effects of an accretion disc plus a corona. We checked the consistency of this spectral model on the basis of the variability patterns of its spectral parameters. We found that the two sources show different spectral states. We tentatively interpret the observed behaviour of NGC 1313 X-1 and X-2 within the framework of near-Eddington and/or super-Eddington accretion. We also attempted to determine the chemical abundances in the local environment of NGC 1313 X-1 and X-2 from the EPIC and RGS spectra. The results appear to indicate subsolar metallicity for both sources.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): accretion, accretion discs - X-rays: binaries - X-rays: galaxies - X-rays: individual: NGC 1313 X-1 - X-rays: individual: NGC 1313 X-2

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 SN 1978K SN* 03 17 38.620 -66 33 03.40   13.0       SN.II 185 1
2 NGC 1313 G 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 585 2
3 RX J031820.3-662911 UX? 03 18 20.00 -66 29 10.9           ~ 162 1
4 2E 756 ULX 03 18 22.00 -66 36 04.3   23.5 23.6     O9.5 178 3
5 [SST2011] J034555.61+680455.3 ULX 03 45 55.612 +68 04 55.29           ~ 131 1
6 RX J0957.9+6903 ULX 09 57 53.290 +69 03 48.20           ~ 190 4
7 [FK2005] 23 ULX 13 29 38.62 +58 25 05.6           ~ 107 2

    Equat.    Gal    SGal    Ecl

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2019.10.23-05:52:43

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