2007A&A...472...87G

Query : 2007A&A...472...87G

2007A&A...472...87G - Astronomy and Astrophysics, volume 472, 87-92 (2007/9-2)

Eight more ultra luminous X-ray candidates unmasked.

GUTIERREZ C.M. and LOPEZ-CORREDOIRA M.

Abstract (from CDS):

We aim to identify the nature of several objects previously catalogued as ultra-luminous X-ray (ULX) source candidates. Long-slit spectroscopy of the optical counterparts has been carried out. The eight objects are at higher redshift than their putative parent galaxies. It is found that these eight previously catalogued ULX candidates, most of them projected in galactic halos are actually background unrelated objects. This result confirms the high degree of contamination present in current catalogues of ULXs.

Abstract Copyright: ∼

Journal keyword(s): galaxies: quasars: general - X-rays: general

Nomenclature: Paragr. 3.8: [GL2007] QSO J1225+1813 abs N.NNNN N=1.

CDS comments: SW 78 = QSO J1225+1813.

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 IXO 29 QSO 05 41 43.2905722584 +69 20 46.008980520           ~ 5 1
2 NGC 1961 LIN 05 42 04.6327819680 +69 22 42.411028872   11.73 10.99     ~ 337 3
3 2XMM J121007.8+392312 AGN 12 10 07.792 +39 23 12.38   19.74 18.79     ~ 12 1
4 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3688 2
5 QSO J1225+1813 QSO 12 25 17.1685590936 +18 13 46.523052516   18.4 19.10 18.6   ~ 27 0
6 M 85 GiP 12 25 24.053 +18 11 27.89   10.2       ~ 644 0
7 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 636 2
8 2MASS J12275718+1302327 QSO 12 27 57.1948608984 +13 02 32.836408728   19.47 19.06     ~ 16 1
9 2XMM J122912.8+075741 QSO 12 29 12.8853122112 +07 57 41.656943448   20.99 20.53     ~ 7 1
10 SDSS J122922.15+075332.5 QSO 12 29 22.1469707352 +07 53 32.509690692           ~ 16 1
11 SDSS J122923.73+075359.2 QSO 12 29 23.7380586744 +07 53 59.242483248   19.58 19.39     ~ 34 1
12 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2093 2
13 RX J1236.2+2558 ULX 12 36 17.45 +25 58 53.1           ~ 12 1
14 M 60 GiP 12 43 39.9680 +11 33 09.696   10.3       ~ 1348 1
15 SDSS J124406.96+113524.2 QSO 12 44 06.9655740552 +11 35 24.245864196   19.81 19.53     ~ 35 1

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