2000MNRAS.315L..57J

Query : 2000MNRAS.315L..57J

2000MNRAS.315L..57J - Mon. Not. R. Astron. Soc., 315, L57-L60 (2000/July-2)

The infrared counterpart of the Z source GX 5-1.

JONKER P.G., FENDER R.P., HAMBLY N.C. and VAN DER KLIS M.

Abstract (from CDS):

We have obtained UK Infrared Telescope infrared observations of the field of the bright Galactic Z source GX 5-1. From an astrometric plate solution tied to Tycho-ACT standards we have obtained accurate positions for the stars in our field which, combined with an accurate radio position, have allowed us to identify the probable infrared counterpart of GX 5-1. Narrow-band photometry marginally suggests excess Brγ emission in the counterpart, supporting its association with an accretion-disc source. No significant variability is observed in a limited number of observations. We compare the H and K magnitudes with those of other Z sources, and briefly discuss possible sources of infrared emission in these systems.

Abstract Copyright: Blackwell Science Ltd

Journal keyword(s): binaries: close - stars: individual: GX 5-1 - infrared: stars

CDS comments: Table 2 , 3: stars are '[NCL91] GX 5-1 NNN' 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 - 2026 		#notes
1 V* V818 Sco LXB 16 19 55.0692669024 -15 38 25.017666540 11.60 12.40 11.1     Oev 1730 0
2 4U 1642-45 LXB 16 45 48.1 -45 36 42           ~ 467 1
3 V* V1101 Sco LXB 17 05 44.4916006152 -36 25 23.049324480   20.10 18.6     ~ 473 0
4 HD 161903 * 17 48 19.2234974760 -01 48 29.720389644   8.02 7.74     A4IV/V 63 0
5 4U 1758-25 LXB 18 01 09.7308060816 -25 04 44.120221284     11.08     ~ 705 1
6 V* V5512 Sgr LXB 18 14 31.3 -17 09 23     12.73     K5III 449 0
7 V* NP Ser LXB 18 16 01.7 -14 02 09   18.8       K 683 2
8 V* V1341 Cyg LXB 21 44 41.1544345272 +38 19 17.066570988 15.00 15.13 14.68 15.00   A9III 1229 1
9 [NCL91] GX 5-1 512 * ~ ~           ~ 2 0
10 [NCL91] GX 5-1 502 * ~ ~           ~ 2 0
11 [NCL91] GX 5-1 513 * ~ ~           ~ 2 0
12 [NCL91] GX 5-1 507 * ~ ~           ~ 2 0
13 [NCL91] GX 5-1 503 * ~ ~           ~ 2 0

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