J/AcA/66/307 NGC 362 variable V light curves (Rozyczka+, 2016)
The Clusters AgeS Experiment (CASE).
Variable stars in the field of the globular cluster NGC 362.
Rozyczka M., Thompson I.B., Narloch W., Pych W., Schwarzenberg A.
<Acta Astron. 66, 307-332 (2016)>
=2016AcA....66..307R 2016AcA....66..307R (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry
Keywords: globular clusters: individual: NGC 362 - stars: variables: general -
blue stragglers - binaries: eclipsing
Abstract:
The field of the globular cluster NGC 362 was monitored between 1997
and 2015 in a search for variable stars. BV light curves were obtained
for 151 periodic or likely periodic variable stars, over a hundred of
which are new detections. Twelve newly detected variable stars are
proper-motion members of the cluster: two SX Phe and two RR Lyr
pulsators, one contact binary, three detached or semi-detached
eclipsing binaries, and four spotted variable stars. The most
interesting objects among these are the binary blue straggler V20 with
an asymmetric light curve, and the 8.1d semidetached binary V24
located on the red giant branch of NGC 362, which is a Chandra X-ray
source. We also provide substantial new data for 24 previously known
variable stars.
Description:
Our paper is based on images acquired mainly with the 1.0-m Swope
telescope and the 2048x3150 SITe3 camera. The field of view was
14.8x22.8 arcmin2 at a scale of 0.435 arcsec/pixel. Observations were
obtained on 205 nights from July 7, 1997 to October 23, 2009. The same
set of filters was used for all observations. A total of 3785 V-band
images and 1123 B-band images were selected for analysis. The seeing
ranged from 1.14" to 4.3" and 1.28" to 4.07" for V and B,
respectively, with median values of 1.67" and 1.8". We also used 73
V-frames acquired in 2015 on Swope at the same resolution as before
and with the same set of filters, but with the new E2V camera, and 270
frames acquired between 2001 and 2007 on the 2.5m du Pont telescope
with a field of view 8.84x8.84arcmin2 at a resolution of
0.259arcsec/pixel.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 16 Basic properties of variable stars in NGC 362
identified within the present survey
table2.dat 101 42 Basic properties of variable field stars
identified within the present survey of NGC 362
table3.dat 56 46 Basic data of 46 SX Phe delta Sct pulsators from
the SMC identified within the present survey
table4.dat 95 24 Basic data of Clement et al. (2001AJ....122.2587C 2001AJ....122.2587C,
Cat. V/150) and Lebzelter and Wood
(2011A&A...529A.137L 2011A&A...529A.137L) variables for which
important new information is provided
lc/* . 127 Individual light curves
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See also:
J/AcA/50/337 : OGLE LMC star clusters (Pietrzynski+, 2000)
J/A+A/373/899 : New variables in M22 globular cluster (Kaluzny+, 2001)
J/AJ/124/1486 : M4 UBV color-magnitude diagrams (Mochejska+, 2002)
J/A+A/424/1101 : Variable Stars in the field of ω Cen (Kaluzny+, 2004)
J/AJ/136/400 : Cl* NGC 6397 SAW V32 V light curve (Kaluzny+, 2008)
J/AJ/145/43 : Three eclipsing binaries in M4 (Kaluzny+, 2013)
Byte-by-byte Description of file: table1.dat table2.dat table4.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Star Star name
7- 13 F7.2 pix Xpos X Pixel coordinate in the template image
16- 22 F7.2 pix Ypos Y Pixel coordinate in the template image
24- 32 F9.6 deg RAdeg Right ascension (J2000)
34- 43 F10.6 deg DEdeg Declination (J2000)
45- 55 F11.6 d Per Period
56 A1 --- n_Per [f] f: Time-span between the first and
the last observation
58- 63 F6.3 mag Vmax Maximum V magnitude
65- 70 F6.3 mag B-V ? B-V colour index
72- 76 F5.3 mag DVmag Amplitude of variation in V band
78 A1 --- PM [YNU] Proper motion membership status (1)
80- 84 A5 --- VType Variable type (2)
86- 92 A7 --- FileName Name of the file with V light curve data
94-101 A8 --- Rem Remarks (3)
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Note (1): Proper motion membership status as follows:
Y = member
N = field star
U = uncertain
Note (2): Variable type as follows:
EW = contact binary
EB = close eclipsing binary
EA = detached eclipsing binary
SX = SX-Phenicis type pulsator
Sp = spotted variable
Ell = ellipsoidal variable
RRab = RR-Lyrae ab type pulsator
SPB = SPB pulsator
LPV = long period variable
s = suspected variable
Note (3): Remarks as follows:
BS = blue straggler
RG = red giant
X = X-ray source
Bl = Blazhko effect
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Star Star name
6- 14 F9.6 deg RAdeg Right ascension (J2000)
16- 25 F10.6 deg DEdeg Declination (J2000)
27- 34 F8.6 d Per Period
36- 41 F6.3 mag Vmax Maximum V magnitude
43- 48 F6.3 mag B-V ? B-V colour index
50- 56 A7 --- FileName Name of the file with V light curve data
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Byte-by-byte Description of file: (#) lc/*
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Bytes Format Units Label Explanations
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1- 11 F11.6 d HJD Heliocentric Julian date (HJD-2400000.0)
13- 21 F9.6 mag Vmag V magnitude
23- 31 F9.6 mag e_Vmag Error of V magnitude
33- 41 F9.6 --- Phase Phase
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History:
Copied at https://case.camk.edu.pl/results/Photometry/NGC362/index.html
(End) Patricia Vannier [CDS] 20-Apr-2018