2006A&A...449.1139M


Query : 2006A&A...449.1139M

2006A&A...449.1139M - Astronomy and Astrophysics, volume 449, 1139-1149 (2006/4-3)

Unveiling the nature of INTEGRAL objects through optical spectroscopy. III. Observations of seven southern sources.

MASETTI N., PRETORIUS M.L., PALAZZI E., BASSANI L., BAZZANO A., BIRD A.J., CHARLES P.A., DEAN A.J., MALIZIA A., NKUNDABAKURA P., STEPHEN J.B. and UBERTINI P.

Abstract (from CDS):

Context. The detection, thanks to the INTEGRAL satellite, of a number of new hard X-ray sources calls for the identification of their nature by means of observations at longer wavelengths.
Aims. In our continuing campaign to identify longer-wavelength counterparts of these newly-discovered hard X-ray sources detected by INTEGRAL, we observed the putative optical counterparts of seven southern sources at the South African Astronomical Observatory and at the European Southern Observatory.
Methods. Optical spectroscopy was performed on all candidates of these X-ray sources. For two of these objects, optical photometry was also acquired.
Results. These observations firmly established the nature of four of these sources: we found that IGR J10404-4625 (=LEDA 93974), 4U 1344-60 and IGR J16482-3036 are Active Galactic Nuclei (AGNs) at redshifts z=0.0237, 0.013 and 0.0313, respectively, and that 2RXP J130159.6-635806 is a Galactic High-Mass X-ray Binary (HMXB). We also give possible optical identifications for three further objects, namely IGR J11215-5952, IGR J11305-6256 and IGR J16207-5129, which are consistent with being Galactic HMXBs. Physical parameters for these objects are also evaluated by collecting and discussing the available multiwavelength information.
Conclusions. The detection of four definite or likely HMXBs out of seven objects in our sample further stresses INTEGRAL's crucial contribution in hunting this class of object. Also, the determination of the extragalactic nature of a substantial fraction of the INTEGRAL survey sources underlines the importance of hard X-ray observations for the study of background AGNs located beyond the ``Zone of Avoidance'' of the Galactic Plane.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - X-rays: galaxies - galaxies: Seyfert - techniques: spectroscopic

Simbad objects: 15

goto Full paper

goto View the references in ADS

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 - 2022
#notes
1 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 934 0
2 HD 63666 HXB 07 47 23.5848942480 -53 19 56.822589048   7.60 7.60     B7IV/V 31 0
3 NAME Car Arm PoG 10 00 -60.0           ~ 407 1
4 2MASX J10402231-4625264 Sy2 10 40 22.313 -46 25 26.45   16.8       ~ 71 0
5 HD 306414 s*b 11 21 46.8238550520 -59 51 47.970396396 10.12 10.69 10.23 10.00   B1Ia 142 0
6 HD 100199 HXB 11 31 06.9121063752 -62 56 48.930444024 7.33 8.147 8.17 8.98   B0/1(III)n(e) 94 0
7 NAME Crux Arm PoG 12 30 -60.0           ~ 88 0
8 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4502 2
9 1RXP J130159.6-635806 Psr 13 01 58.7205396744 -63 58 08.828687136           O9V/B1III 53 0
10 2MASS J13473599-6037037 Sy1 13 47 36.00 -60 37 03.8         16.77 ~ 86 0
11 CD-32 9927 * 14 11 46.3227735768 -33 03 14.373268704   10.793 10.444 10.12 10.106 A4 93 0
12 HD 146803 Em* 16 20 36.3350046480 -51 29 35.308966632   10.35 10.39     A1IV 13 0
13 CXOU J162046.2-513006 HXB 16 20 46.2644580432 -51 30 06.045320232   18.9   16.28 13.4 B8IIIe 58 0
14 LEDA 5061277 Sy1 16 48 15.2500861368 -30 35 04.107778980     15.8     ~ 61 0
15 NAME Sgr Arm PoG 19 00 -30.0           ~ 585 1

To bookmark this query, right click on this link: simbad:objects in 2006A&A...449.1139M and select 'bookmark this link' or equivalent in the popup menu


2022.05.27-02:22:59

© Université de Strasbourg/CNRS

    • Contact