2011ApJ...733..106S

Query : 2011ApJ...733..106S

2011ApJ...733..106S - Astrophys. J., 733, 106 (2011/June-1)

A dwarf nova in the globular cluster M13.

SERVILLAT M., WEBB N.A., LEWIS F., KNIGGE C., VAN DEN BERG M., DIEBALL A. and GRINDLAY J.

Abstract (from CDS):

Dwarf novae (DNe) in globular clusters (GCs) seem to be rare with only 13 detections in the 157 known Galactic GCs. We report the identification of a new DN in M13, the 14th DN identified in a GC to date. Using the 2 m Faulkes Telescope North, we conducted a search for stars in M13 that show variability over a year (2005-2006) on timescales of days and months. This led to the detection of one DN showing several outbursts. A Chandra X-ray source is coincident with this DN and shows both a spectrum and variability consistent with that expected from a DN, thus supporting the identification. We searched for a counterpart in Hubble Space Telescope Advanced Camera for Surveys/Wide Field Camera archived images and found at least 11 candidates, of which we could characterize only the 7 brightest, including one with a 3σ Hα excess and a faint blue star. The detection of one DN when more could have been expected likely indicates that our knowledge of the global Galactic population of cataclysmic variables is too limited. The proportion of DNe may be lower than found in catalogs, or they may have a much smaller mean duty cycle (∼1%) as proposed by some population synthesis models and recent observations in the field.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual (M13, NGC 6205) - novae, cataclysmic variables - stars: dwarf novae - X-rays: general

Nomenclature: Fig. 5, Table 2: [SWL2011] NN (Nos 1-16). Fig. 6, Table 4: [SWL2011] XNN (Nos X1-X47).

Simbad objects: 88

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Number of rows : 88
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 [SWL2011] X40 X 16 41 21.629 +36 29 01.59           ~ 1 0
2 [SWL2011] X29 X 16 41 27.839 +36 27 34.26           ~ 1 0
3 [SWL2011] X38 X 16 41 30.540 +36 31 02.52           ~ 1 0
4 NGC 6205 187 * 16 41 31.58 +36 28 44.4   15.22 15.18     ~ 7 0
5 NGC 6205 194 RG* 16 41 31.9970786088 +36 28 29.999965224   13.54 12.03     ~ 58 0
6 [SWL2011] X35 X 16 41 32.606 +36 30 37.58           ~ 1 0
7 NGC 6205 206 RR* 16 41 32.6563847592 +36 28 02.165035404   15.549 15.100     ~ 28 0
8 [SWL2011] X44 X 16 41 32.745 +36 23 08.08           ~ 1 0
9 NGC 6205 216 * 16 41 33.43 +36 27 10.7   15.56 15.33     ~ 4 0
10 [SWL2011] X19 X 16 41 33.832 +36 28 14.33           ~ 1 0
11 [SWL2011] X20 X 16 41 34.074 +36 26 58.57           ~ 1 0
12 NGC 6205 254 * 16 41 34.50 +36 27 52.3     14.57     ~ 4 0
13 Cl* NGC 6205 BARN 55 RG* 16 41 35.5110144199 +36 27 27.411645285   12.1 11.94     ~ 8 0
14 Cl* NGC 6205 SAW V2 WV* 16 41 35.9002889688 +36 27 48.514286736   13.63 13.01     A8-F8 37 0
15 NGC 6205 322 * 16 41 36.40 +36 28 49.9   15.78 15.69     ~ 6 0
16 NGC 6205 324 RG* 16 41 36.6351298080 +36 26 35.468102904   13.65 12.00     ~ 47 0
17 2MASS J16413666+3627207 RG* 16 41 36.667 +36 27 20.73   14.53 13.78     ~ 11 0
18 [SWL2011] X36 X 16 41 36.849 +36 31 15.09           ~ 1 0
19 NGC 6205 344 RR* 16 41 37.1258223552 +36 26 28.952161224   15.15 14.93     ~ 20 0
20 [SWL2011] X28 X 16 41 37.792 +36 25 05.22           ~ 1 0
21 XMMU J164138.3+362627 X 16 41 38.209 +36 26 26.71           ~ 2 0
22 [SWL2011] X12 X 16 41 38.407 +36 28 23.35           ~ 1 0
23 NGC 6205 414 RG* 16 41 38.6880896352 +36 25 37.905071700   13.61 12.14     ~ 65 0
24 [SWL2011] X10 X 16 41 38.839 +36 28 04.53           ~ 1 0
25 NGC 6205 445 * 16 41 39.2195 +36 27 23.510     12.20     ~ 8 0
26 [SWL2011] X37 X 16 41 39.239 +36 23 43.84           ~ 1 0
27 [SWL2011] X16 X 16 41 39.393 +36 26 35.67           ~ 1 0
28 [SWL2011] X39 X 16 41 39.846 +36 23 31.32           ~ 1 0
29 [SWL2011] X17 X 16 41 39.950 +36 26 28.15           ~ 1 0
30 Cl* NGC 6205 GBF 10848 V* 16 41 40.01 +36 26 41.5   13.80 12.51     G2 12 0
31 [SWL2011] X3 X 16 41 40.366 +36 27 42.84           ~ 1 0
32 NGC 6205 519 * 16 41 40.44 +36 27 29.9           ~ 4 0
33 [SWL2011] X8 X 16 41 41.078 +36 27 08.11           ~ 1 0
34 NGC 6205 554 * 16 41 41.1342 +36 27 22.987     12.70     ~ 9 0
35 NGC 6205 568 * 16 41 41.27 +36 28 13.0           ~ 4 0
36 Cl* NGC 6205 SAW V35 RR* 16 41 41.43 +36 27 47.1           ~ 6 0
37 NGC 6205 575 * 16 41 41.6133 +36 27 38.380     17.84     ~ 5 0
38 [SWL2011] X30 X 16 41 41.646 +36 24 41.70           ~ 1 0
39 [SWL2011] X25 X 16 41 41.926 +36 25 26.92           ~ 1 0
40 NGC 6205 598 RG* 16 41 41.9443189176 +36 26 51.715259736   13.64 12.00     ~ 57 0
41 [SWL2011] X1 X 16 41 42.015 +36 27 34.65           ~ 1 0
42 [SWL2011] X22 X 16 41 42.346 +36 25 49.57           ~ 1 0
43 [SWL2011] X4 X 16 41 42.401 +36 27 28.29           ~ 1 0
44 Cl* NGC 6205 SAW V37 SX* 16 41 42.45 +36 28 21.8     17.18   16.92 ~ 6 0
45 [SWL2011] 4 V* 16 41 42.46 +36 28 08.1           ~ 1 0
46 XMMU J164142.7+362806 X 16 41 42.480 +36 28 07.52           ~ 5 0
47 Cl* NGC 6205 CGY 6275 RR* 16 41 42.4953 +36 27 31.160     13.18     ~ 11 0
48 2MASS J16414255+3626563 RG* 16 41 42.5493186408 +36 26 56.173428780   13.42 11.94     ~ 38 0
49 [SWL2011] X2 X 16 41 42.676 +36 27 47.65           ~ 1 0
50 [SWL2011] X14 X 16 41 42.775 +36 28 40.55           ~ 1 0
51 [SWL2011] X5 X 16 41 43.160 +36 27 25.44           ~ 1 0
52 Cl* NGC 6205 SAW V36 * 16 41 43.45 +36 26 26.0           ~ 5 0
53 2XMM J164143.6+362758 LXB 16 41 43.761 +36 27 57.84           ~ 8 0
54 NGC 6205 717 * 16 41 44.27 +36 28 31.7   15.06 14.95     ~ 4 0
55 [SWL2011] 2 V* 16 41 44.57 +36 28 04.4           ~ 1 0
56 [SWL2011] X11 X 16 41 44.622 +36 28 15.97           ~ 2 0
57 [SWL2011] X9 X 16 41 44.822 +36 27 37.04           ~ 2 0
58 NGC 6205 743 * 16 41 45.01 +36 27 04.1     13.70     ~ 5 0
59 NGC 6205 748 * 16 41 45.08 +36 27 37.2           ~ 4 0
60 [SWL2011] X23 X 16 41 45.407 +36 29 35.47           ~ 1 0
61 Cl* NGC 6205 SAW V41 LP* 16 41 45.7042606072 +36 27 57.607470645     13.14     ~ 11 0
62 [SWL2011] X26 X 16 41 45.947 +36 25 32.48           ~ 1 0
63 [SWL2011] X33 X 16 41 45.948 +36 24 22.01           ~ 1 0
64 NGC 6205 807 * 16 41 46.2697739040 +36 28 55.206903684   14.72 14.41     ~ 10 0
65 NGC 6205 806 RR* 16 41 46.2708705096 +36 27 37.997414280   14.91 14.82     ~ 13 1
66 [SWL2011] X13 X 16 41 46.283 +36 28 01.74           ~ 1 0
67 Cl* NGC 6205 SAW V5 RR* 16 41 46.3749846000 +36 27 39.994290900   14.94 14.77     ~ 16 1
68 NGC 6205 816 WV* 16 41 46.4819241696 +36 27 27.821090052   14.53 14.09     A2 38 0
69 XMMU J164146.8+362729 X 16 41 46.838 +36 27 30.93           ~ 2 0
70 2MASS J16414703+3625576 RG* 16 41 47.0167556736 +36 25 57.511404084   13.48 12.03     ~ 40 0
71 Cl* NGC 6205 SAW V6 WV* 16 41 47.9755382448 +36 29 09.747499020   14.63 14.08     F2 33 0
72 [SWL2011] X34 X 16 41 48.727 +36 30 48.17           ~ 1 0
73 XMMU J164149.0+362644 X 16 41 49.019 +36 26 44.73           ~ 2 0
74 NGC 6205 918 RR* 16 41 49.13 +36 27 06.3     14.83     ~ 6 0
75 2MASS J16414970+3627489 RG* 16 41 49.6881218256 +36 27 48.777763752   13.47 12.04     ~ 28 0
76 Cl* NGC 6205 M b * 16 41 49.79 +36 28 20.9           ~ 3 0
77 [SWL2011] X24 X 16 41 49.794 +36 26 24.47           ~ 1 0
78 [SWL2011] X27 X 16 41 50.006 +36 25 42.67           ~ 1 0
79 [SWL2011] X31 * 16 41 50.2945373856 +36 25 13.805206392           ~ 1 0
80 NGC 6205 973 RG* 16 41 50.9158586208 +36 28 54.352362612   13.65 11.91     ~ 73 0
81 Cl* NGC 6205 ARP 4052 V* 16 41 52.12 +36 26 29.1   14.11 14.02     A5III-IV 17 0
82 [SWL2011] X42 X 16 41 52.258 +36 23 23.67           ~ 1 0
83 [SWL2011] X32 X 16 41 54.727 +36 26 04.15           ~ 1 0
84 [SWL2011] X43 X 16 41 57.158 +36 31 24.07           ~ 1 0
85 [SWL2011] X46 X 16 42 02.659 +36 30 59.96           ~ 1 0
86 [SWL2011] X41 X 16 42 02.732 +36 27 21.40           ~ 1 0
87 [FLM96] M 13 I X 16 42 03.380 +36 24 15.48           ~ 3 0
88 [SWL2011] X45 X 16 42 03.911 +36 25 27.95           ~ 1 0

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