The Clusters AgeS Experiment (CASE). Variable Stars in the Field of the Globular Cluster NGC 6362
Kaluzny, J.; Thompson, I. B.; Rozyczka, M.; Pych, W.; Narloch, W.
Abstract:
The field of the globular cluster NGC 6362 was monitored between 1995 and 2009 in a search for variable stars. BV light curves were obtained for 69 periodic variable stars including 34 known RR Lyr stars, 10 known objects of other types and 25 newly detected variable stars. Among the latter we identified 18 proper-motion members of the cluster: seven detached eclipsing binaries (DEBs), six SX Phe stars, two W UMa binaries, two spotted red giants, and a very interesting eclipsing binary composed of two red giants - the first example of such a system found in a globular cluster. Five of the DEBs are located at the turnoff region, and the remaining two are redward of the lower main sequence. Eighty-four objects from the central 9×9 arcmin2 of the cluster were found in the region of cluster blue stragglers. Of these 70 are proper motion (PM) members of NGC 6362 (including all SX Phe and two W UMa stars), and five are field stars. The remaining nine objects lacking PM information are located at the very core of the cluster, and as such they are likely genuine blue stragglers.

DOWNLOADS:
The paper (PDF) "Variable stars in the globular cluster NGC 6362"
Mazur, Beata; Kaluzny, Janusz; Krzemiński, Wojciech;
1999, Monthly Notices of the Royal Astronomical Society, Volume 306, Issue 3, pp. 727-735.
The paper (PDF) "The Clusters AgeS Experiment (CASE): RR Lyrae variables in the globular cluster NGC 6362"
Olech, A.; Kaluzny, J.; Thompson, I. B.; Pych, W.; Krzemiński, W.; Schwarzenberg-Czerny, A.;
2001, Monthly Notices of the Royal Astronomical Society, Volume 321, Issue 3, pp. 421-432.
The paper (PDF) "The Clusters AgeS Experiment (CASE). Variable Stars in the Field of the Globular Cluster NGC 6362"
Kaluzny, J.; Thompson, I. B.; Rozyczka, M.; Pych, W.; Narloch, W.;
2014, Acta Astronomica, vol 64, no 4, p. 309-322
The reference
V-band image (FITS)


Table 1: Basic properties of variable stars in NGC6362 identified within the present survey
Star Xa Ya Period [days] Vmax B-V ΔV PMb Typec V light-curved B light-curved Remarks
V38 1183.73 1718.04 0.06661582(1) 17.02 0.28 0.63 Y SX,BS V38P.ph -
V39 849.17 1748.58 0.3632599(1) 17.86 0.39 0.20 Y EW,BS V39P.ph -
V40 906.53 1820.22 5.2961749(1) 18.22 0.55 0.54 Y EA V40P.ph -
V41 1291.19 1869.16 17.888844(4) 18.77 0.57 0.58 Y EA V41P.ph -
V42 1685.68 167.15 2.769390(6) 17.51 0.69 0.64 N EA V42S.ph -
V45 1881.72 1183.70 0.3407063(1) 16.92 0.80 0.33 N EW V45S.ph -
V46 634.46 1368.66 0.050634688(5) 17.55 0.30 0.05 Y SX,BS V46P.ph -
V47 789.42 1662.48 0.052234111(5) 17.35 0.29 0.05 Y SX,BS V47P.ph -
V48 963.53 1831.52 0.047920021(5) 17.12 0.33 0.06 Y SX,BS V48P.ph -
V49 636.91 1849.26 32.504(1) 14.97 0.93 0.36 Y EB,RG V49S.ph -
V53 050.76 094.33 0.2826720(1) 19.61 0.79 0.25 N EW V53S.ph -
V54 230.47 2106.68 0.4430415(2) 20.41 0.86 0.48 Y EA V54S.ph -
V55 253.49 683.16 6.49353(5) 17.35 0.57 0.05 N Ell V55S.ph -
V56 264.64 1078.29 0.5193450(3) 17.50 0.23 0.09 N EW V56S.ph -
V57 361.28 678.11 0.81848(1)e 16.62 0.99 0.08 N Sp? V57S.ph -
V58 571.43 2499.15 3.815(1)e 17.96 0.95 0.09 N Sp V58S.ph -
V59 622.10 2219.07 0.6601102(4) 17.48 0.31 0.03 Y EW/Ell,BS V59P.ph -
V60 669.16 669.46 6.0255(5)f 17.89 0.92 0.12 N Sp V60S.ph -
V61 718.01 1802.26 46.35(1)f 17.23 0.83 0.07 Y Sp,RG V61P.ph
V61S.ph
-
V62 884.80 1733.69 16.73212(6) 19.39 0.55 0.33 Y EA V62P.ph -
V63 901.90 2456.88 1.890156(3) 17.80 0.48 0.15 N EB V63S.ph -
V64 985.00 1822.63 0.050162402(5) 17.06 0.31 0.03 Y SX,BS V64P.ph -
V65 1125.93 1842.76 30.9723(1) 18.39 0.55 0.43 Y EA V65P.ph
V65S.ph
-
V66 1127.26 1577.72 1.974206(4) 19.13 0.71 0.20 Y EA V66P.ph -
V67 1153.75 1918.91 0.25080101(6) 19.55 0.72 0.52 N EW V67P.ph -
V68 1165.28 1769.20 17.98(1)f 17.62 0.77 0.08 Y Sp,RG V68P.ph
V68S.ph
-
V69 1185.76 1553.27 2.0125(1) 17.14 1.08 0.08 N Sp V69P.ph
V69S.ph
-
V70 1247.23 1708.41 0.3393452(3) 17.60 0.49 0.47 N EW V70P.ph -
V71 1280.43 1619.02 11.965385(5) 19.17 0.56 0.30 Y EA V71P.ph -
V72 1381.71 1665.93 0.0436729(1) 17.61 0.29 0.03 Y SX,BS V72P.ph -
V73 1540.61 1813.48 0.338903(5) 20.86 1.11 0.82 N EB V73P.ph -
V74 1542.97 1310.22 0.261080(3) 18.82 0.76 0.17 N EW V74P.ph -
V75 1601.34 691.80 1.2290(2)e 18.40 1.11 0.10 N Sp V75S.ph -
V76 1709.96 1788.99 30.96345(5) 17.04 0.74 0.09 N EA V76S.ph -
V77 1913.99 701.33 6.2746(1) 18.41 0.89 0.52 U EA V77S.ph -
a Pixel coordinate in the template image
b Proper motion membership status — Y - member, N - field star, U - uncertain
c Variable type

EW - contact binary; EB - close ecppsing binary; EA - detached ecppsing binary;

SX - SX-Phenicis type pulsator; Sp - spotted variable; Ell - ellipsoidal variable;

BS - blue straggler; RG - red giant.

d Data columns:
  1. HJD - 2 400 000.0
  2. magnitude
  3. error of magnitude (dummy points are maked with the error=9.999)
  4. phase
e for the 2001 season
f for the 1999 season