2008A&A...482..731R


Query : 2008A&A...482..731R

2008A&A...482..731R - Astronomy and Astrophysics, volume 482, 731-737 (2008/5-1)

Swift follow-up observations of INTEGRAL sources of unknown nature.

RODRIGUEZ J., TOMSICK J.A. and CHATY S.

Abstract (from CDS):

Since its launch in 2002, INTEGRAL has discovered many new hard X-ray sources. A lot of them still lack sufficient positional accuracy, for finding counterparts at other wavelengths. Their true nature is, therefore, still unknown. The goal of this study is to give an accurate X-ray position for 12 of these sources so as to further identify their counterpart at optical, infrared, and radio wavelengths, and to unveil their true nature. We also make use of the X-ray spectral parameters to tentatively distinguish between the various possible types. We made use of X-ray observations with the X-ray telescope on-board the Swift observatory to refine the X-ray position to 3-5'' accuracy, and performed 0.1-10keV spectral analysis. We then searched the online catalogues (e.g. NED, SIMBAD, 2MASS, 2MASX, and NVSS) to search for counterparts at other wavelengths. For all sources, we give a refined X-ray position, provide X-ray spectral parameters, identify infrared counterparts, and give magnitudes at optical and ultra violet wavelengths seen with UVOT when observations are available. We confirm the nature of six sources formerly suspected to be AGN (IGR J02343+3229, J13149+4422, J14579-4308, J16385-2057, J18559+1535, J19378-0617). Our analysis first leads us to suggest that IGR J09523-6231 and IGR J10147-6354 are AGN. While the former has recently been confirmed as a Seyfert 1.5 AGN, we suggest the latter is a Seyfert 2. All other sources may be Galactic sources, in which case their spectral shape may suggest that they are X-ray binaries. In one case (IGR J19308+0530), the Galactic nature is confirmed through the identification of an F8 star as the counterpart. We favour a distance to the source not greater than 1kpc. The source is likely to be a neutron star XRB or a CV. We also report the discovery of six serendipitous sources of unknown nature.

Abstract Copyright:

Journal keyword(s): astrometry - stars: binaries: close - galaxies: Seyfert - X-rays: binaries - X-rays: galaxies

CDS comments: IGR J23254+5842 is a misprint for IGR23524+5842.

Simbad objects: 28

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Number of rows : 28
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 SWIFT J023405.1+322707 X 02 34 05.1 +32 27 07           ~ 1 0
2 HD 15896 * 02 34 05.2901907144 +32 27 07.274769840   8.73 7.65     K0 11 0
3 NGC 973 Sy2 02 34 20.101 +32 30 20.01   13.7   9.8   ~ 124 0
4 SWIFT J0952.3-6234 Sy1 09 52 20.7 -62 32 37           ~ 29 0
5 1RXS J095237.2-622310 X 09 52 37.2 -62 23 10           ~ 1 0
6 TYC 8946-1483-1 * 09 52 38.4323675928 -62 23 14.435162736   12.18 11.21     ~ 5 0
7 [VV2010c] J101415.5-635150 Sy1 10 14 15.5 -63 51 50           ~ 13 0
8 2MASS J10141554-6351500 NIR 10 14 15.5434732656 -63 51 50.125965480           ~ 1 0
9 2MASS J11182121-5437286 XB* 11 18 21.2097107304 -54 37 28.763958828         17.27 ~ 12 0
10 NAME Crux Arm PoG 12 30 -60.0           ~ 88 0
11 Mrk 248 Sy2 13 15 17.2663982328 +44 24 25.601901516   16.5       ~ 77 0
12 SWIFT J145702.3-430128 X 14 57 02.3 -43 01 28           ~ 1 0
13 TYC 7828-754-1 * 14 57 04.3364067360 -43 00 18.753540120   11.58 10.91 10.93   ~ 2 0
14 2XMMi J145729.7-430229 AG? 14 57 29.9 -43 02 31           ~ 2 0
15 IC 4518A Sy2 14 57 40.5 -43 07 54   16.64   13.74   ~ 91 0
16 IC 4518 Sy2 14 57 45.6 -43 07 58   14.5       ~ 69 0
17 SWIFT J145746.9-430056 X 14 57 46.9 -43 00 56           ~ 1 0
18 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1260 1
19 LEDA 835095 Sy1 16 38 30.9120796728 -20 55 24.564701892   16.88   15.13   ~ 47 0
20 PSR J1849-0001 Psr 18 49 01.83 -00 01 19.1           ~ 43 0
21 1RXH J185600.4+153757 X 18 56 00.4 +15 37 58           ~ 2 0
22 2MASS J18560056+1537584 * 18 56 00.5471536536 +15 37 58.389985992   17.6 16.3     ~ 3 0
23 2MASX J18560128+1538059 Sy1 18 56 01.282 +15 38 05.90     18.4 16.6   ~ 49 0
24 NAME Sgr Arm PoG 19 00 -30.0           ~ 585 1
25 IGR J19308+0530 CV* 19 30 46 +05 30.1           F 7 0
26 TYC 486-295-1 * 19 30 50.7587313552 +05 30 58.265433684   11.54 10.83     F8 7 0
27 LEDA 90334 Sy1 19 37 33.0247353552 -06 13 04.809737748   16.12 15.35 8.8   ~ 137 1
28 2MASS J23522211+5845307 Sy2 23 52 22.1725943448 +58 45 30.887173008   19.7   18.5   ~ 25 0

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2022.05.21-11:59:13

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