2008A&A...477..125C


Query : 2008A&A...477..125C

2008A&A...477..125C - Astronomy and Astrophysics, volume 477, 125-132 (2008/1-1)

A new search strategy for microquasar candidates using NVSS/2MASS and XMM-Newton data.

COMBI J.A., ALBACETE-COLOMBO J.F. and MARTI J.

Abstract (from CDS):

Microquasars are ideal natural laboratories for understanding accretion/ejection processes, studying the physics of relativistic jets, and testing gravitational phenomena. Nevertheless, these objects are difficult to find in our Galaxy. The main goal of this work is to increase the number of known systems of this kind, which should allow better testing of high-energy phenomena and more realistic statistical studies of this galactic population to be made. We have developed an improved search strategy based on positional cross-identification with very restrictive selection criteria to find new MQs, taking advantage of more sensitive modern X-ray data. To do this, we made combined use of the radio, infrared, and X-ray properties of the sources, using different available catalogs. We find 86 sources with positional coincidence in the NVSS/XMM catalogs at galactic latitudes |b|≤10°. Among them, 24 are well-known objects and the remaining 62 sources are unidentified. Out of 86 sources, 31 have one or two possible infrared counterparts in the 2MASS catalog. For the fully coincident sources, whenever possible, we analyzed color-color and hardness ratio diagrams and found that at least 3 of them display high-mass X-ray binary characteristics, making them potential microquasar candidates.

Abstract Copyright:

Journal keyword(s): radio continuum: general - x-rays: binaries - infrared: stars - stars: early-type - catalogs

VizieR on-line data: <Available at CDS (J/A+A/477/125): table1.dat>

Nomenclature: Table 1, col(2): 2XMMp JHHMMSS.s+DDMMSS N=86.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

CDS comments: Table 1, col(1): numbering NN (Nos 1-86) not used in SIMBAD.

Simbad objects: 13

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Number of rows : 13
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 HD 108 SB* 00 06 03.3885906204 +63 40 46.771682957 6.79 7.58 7.40     O4-8f?p 310 0
2 V* V684 Mon EB* 06 40 38.3663469184 +09 47 16.045993085 7.71 8.31 8.44 8.492 8.516 B4 72 0
3 PSR J0737-3039 Psr 07 37 51.248 -30 39 40.83           ~ 384 1
4 2MASX J07473129-1917403 BiC 07 47 31.296 -19 17 40.34   19.60       ~ 398 1
5 ClG 0745-19 ClG 07 47 31.3 -19 17 40           ~ 366 0
6 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1118 1
7 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1767 1
8 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1877 0
9 NGC 6440 GlC 17 48 52.67 -20 21 34.5   12.01 10.10     ~ 496 1
10 W 31c HII 18 10 29.1 -19 56 05           ~ 314 0
11 V* V479 Sct HXB 18 26 15.0561532140 -14 50 54.249464136 12.02 12.23 11.27 11.04   ON6V((f))z 516 2
12 SNR G021.5-00.9 SNR 18 33 33.612 -10 34 07.69           ~ 412 1
13 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 4047 0

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2021.12.02-08:22:18

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