2012MNRAS.423.2901T

Query : 2012MNRAS.423.2901T

2012MNRAS.423.2901T - Mon. Not. R. Astron. Soc., 423, 2901-2916 (2012/July-1)

A multiwavelength survey of NGC 6752: X-ray counterparts, two new dwarf novae and a core-collapsed radial profile.

THOMSON G.S., KNIGGE C., DIEBALL A., MACCARONE T.J., DOLPHIN A., ZUREK D., LONG K.S., SHARA M. and SARAJEDINI A.

Abstract (from CDS):

We present the results of a multiwavelength (far-ultraviolet to I band) survey of the stellar populations of the globular cluster NGC 6752, using Space Telescope Imaging Spectrograph (STIS), Advanced Camera for Surveys (ACS) and Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. We have confirmed that two previously identified cataclysmic variable (CV) candidates are, in fact, dwarf novae which underwent outbursts during our observations. We have also identified previously unknown optical counterparts to two X-ray sources. We estimate the position of the centre of the cluster, and show that the stellar density profile is not well described by a single King model, indicating that this cluster is in a core-collapsed or post-core-collapse phase. The colour–magnitude diagram shows a well-populated horizontal branch, numerous blue stragglers and white dwarfs (WDs), as well as 87 sources in the gap region where we expect to find WD–main-sequence binaries, including CVs. The X-ray sources and WD binary systems are the most centrally concentrated populations, with dynamically estimated characteristic masses >1.1 and >0.8 M☉, respectively.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): binaries: close - stars: dwarf novae - novae, cataclysmic variables - stars: variables: general - globular clusters: individual: NGC 6752

VizieR on-line data: <Available at CDS (J/MNRAS/423/2901): table2.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 21

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Number of rows : 21
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 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
2 [G93] NGC 6752 A AGN 19 10 40.375 -59 58 41.47   21.76   20.97   ~ 11 0
3 [PLH2002] CX13 CV* 19 10 40.610 -60 00 05.91   24.60   24.32   ~ 9 0
4 [PLH2002] CX16 BY* 19 10 42.531 -59 58 43.03   19.39   18.33   ~ 5 0
5 Cl* NGC 6752 SAW V27 CV* 19 10 51.0764787837 -59 59 12.157923910           ~ 16 0
6 [PLH2002] CX5 CV* 19 10 51.414 -59 59 05.18   19.65   18.57   ~ 11 0
7 [JVH94] NGC 6752 22 CV* 19 10 51.505 -59 59 27.10   24.07   23.87   ~ 10 0
8 Cl* NGC 6752 BRS 2 CV* 19 10 51.511 -59 58 56.85           ~ 18 0
9 Cl* NGC 6752 SAW V25 CV* 19 10 51.586 -59 59 01.73   21.09   20.10   ~ 18 0
10 [PLH2002] CX9 CV? 19 10 51.766 -59 58 59.25   24.40   22.42   ~ 8 0
11 [PLH2002] CX18 X 19 10 52.006 -59 59 03.69           ~ 6 0
12 [PLH2002] CX14 X 19 10 52.039 -59 59 09.12           ~ 6 0
13 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
14 [PLH2002] CX11 CV* 19 10 52.376 -59 59 05.56           ~ 8 0
15 [PLH2002] CX12 X 19 10 52.694 -59 59 03.27           ~ 6 0
16 [PLH2002] CX10 AGN 19 10 54.754 -59 59 13.86   20.16   19.70   ~ 7 0
17 [PLH2002] CX19 ** 19 10 55.600 -59 59 17.33   18.35   17.58   ~ 8 0
18 [PLH2002] CX15 AGN 19 10 55.847 -59 57 45.78   23.05   22.66   ~ 7 0
19 [G93] NGC 6752 D CV* 19 10 56.005 -59 59 37.33           ~ 12 0
20 [PLH2002] CX8 CV? 19 11 02.944 -59 59 41.89           ~ 6 0
21 [PLH2002] CX17 G 19 11 05.258 -59 59 04.42           ~ 6 0

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