2017ApJS..230...25T

Query : 2017ApJS..230...25T

2017ApJS..230...25T - Astrophys. J., Suppl. Ser., 230, 25-25 (2017/June-0)

Galactic sources detected in the NuSTAR serendipitous survey.

TOMSICK J.A., LANSBURY G.B., RAHOUI F., CLAVEL M., FORNASINI F.M., HONG J., AIRD J., ALEXANDER D.M., BODAGHEE A., CHIU J.-L., GRINDLAY J.E., HAILEY C.J., HARRISON F.A., KRIVONOS R.A., MORI K. and STERN D.

Abstract (from CDS):

The Nuclear Spectroscopic Telescope Array (NuSTAR) provides an improvement in sensitivity at energies above 10 keV by two orders of magnitude over non-focusing satellites, making it possible to probe deeper into the Galaxy and universe. Lansbury and collaborators recently completed a catalog of 497 sources serendipitously detected in the 3-24 keV band using 13 deg2 of NuSTAR coverage. Here, we report on an optical and X-ray study of 16 Galactic sources in the catalog. We identify 8 of them as stars (but some or all could have binary companions), and use information from Gaia to report distances and X-ray luminosities for 3 of them. There are 4 CVs or CV candidates, and we argue that NuSTAR J233426-2343.9 is a relatively strong CV candidate based partly on an X-ray spectrum from XMM-Newton. NuSTAR J092418-3142.2, which is the brightest serendipitous source in the Lansbury catalog, and NuSTAR J073959-3147.8 are low-mass X-ray binary candidates, but it is also possible that these 2 sources are CVs. One of the sources is a known high-mass X-ray binary (HMXB), and NuSTAR J105008-5958.8 is a new HMXB candidate that has strong Balmer emission lines in its optical spectrum and a hard X-ray spectrum. We discuss the implications of finding these HMXBs for the surface density (log N-log S) and luminosity function of Galactic HMXBs. We conclude that with the large fraction of unclassified sources in the Galactic plane detected by NuSTAR in the 8-24 keV band, there could be a significant population of low-luminosity HMXBs.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: black holes - stars: neutron - surveys - white dwarfs - X-rays: stars - X-rays: stars

Simbad objects: 32

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Number of rows : 32
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NuSTAR J001639+8139.8 X 00 16 39.878 +81 39 50.17           ~ 2 0
2 HD 1165 * 00 16 52.5178353888 +81 39 49.085467164   9.54 8.66     K0 20 0
3 * gam Cas HXB 00 56 42.5310945 +60 43 00.264089 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1253 0
4 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
5 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
6 RX J0425.6-5714 CV* 04 25 38.6074878432 -57 14 36.208598640   19.1       ~ 15 0
7 V* V1193 Ori CV* 05 16 26.6714235480 -00 12 14.307002172   13.95 14.0     ~ 52 0
8 NuSTAR J070014+1416.8 X 07 00 14.560 +14 16 53.07           ~ 2 0
9 NuSTAR J073959-3147.8 X 07 39 59.4 -31 47 49           ~ 2 0
10 NuSTAR J075611-4133.9 X 07 56 11.394 -41 33 59.73           ~ 2 0
11 TYC 7654-3811-1 * 07 56 11.8878290184 -41 33 58.665518388   11.17 10.14     ~ 1 0
12 2MASS J09235373-3141308 Sy2 09 23 53.7372628512 -31 41 30.973010460   16.57   15.09   ~ 51 0
13 NuSTAR J092418-3142.2 X 09 24 18.4 -31 42 18           ~ 2 0
14 2MASS J09583932+6909119 * 09 58 39.3473479560 +69 09 12.175953948   17.62 16.13     ~ 4 0
15 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 3639 0
16 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
17 NuSTAR J105008-5958.8 X 10 50 08.7 -59 58 53           ~ 1 0
18 NuSTAR J123559-3951.9 X 12 35 59.041 -39 51 57.96           ~ 2 0
19 HD 109573B Or* 12 36 00.5491381248 -39 52 15.693558816         10.78 M2.5 91 0
20 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
21 4U 1246-58 LXB 12 49 39.4 -59 05 14   19.24 18.99     ~ 103 0
22 IGR J13020-6359 HXB 13 01 58.7205396744 -63 58 08.828687136           B0.5Ve 68 0
23 NuSTAR J133628-3414.1 X 13 36 28.793 -34 14 06.16           ~ 2 0
24 NAME Extended Groth Strip reg 14 19 +52.8           ~ 1023 0
25 NuSTAR J143636+5843.0 X 14 36 36.755 +58 43 05.35           ~ 2 0
26 RX J1436.6+5843 PM* 14 36 37.5828001896 +58 43 03.338585328   12.44 11.47     ~ 10 0
27 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
28 NuSTAR J165351+3938.5 X 16 53 51.054 +39 38 32.59           ~ 3 0
29 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
30 NuSTAR J182604-0707.9 X 18 26 04.265 -07 07 59.00           ~ 2 0
31 PSR J1834-0845 Psr 18 34 52.1 -08 45 56           ~ 98 0
32 NuSTAR J233426-2343.9 X 23 34 26.665 -23 43 59.04           ~ 2 0

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