J/AcA/70/291 New GC 3201 variable stars in NGC 3201 (Rozyczka+, 2020)
The Clusters AgeS Experiment (CASE).
Variable Stars in the Field of the globular cluster NGC 3201.
Rozyczka M., Pych W., Thompson I.B., Mazur B.
<Acta Astron., 70, 291-299 (2020)>
=2020AcA....70..291R 2020AcA....70..291R (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry ; Optical
Keywords: globular clusters: individual: NGC 3201 - stars: variables: general -
stars: variables: delta Scuti - blue stragglers - binaries: eclipsing
Abstract:
We report the detection of 20 new variables in the field of NGC 3201.
Among them there are 15 confirmed cluster members. Follow-up
observations are desirable for two blue stragglers with variable light
curves (probably resulting frommagnetic activity), and for a yellow
straggler coinciding with a Chandra X-ray source. Two of the eclipsing
binaries, newly detected at the turnoff in cluster's CMD, and an
eclipsing binary on the red giant branch, are potentially suitable for
the determination of age and distance of NGC 3201.
Description:
The images were acquired between February 17, 1997 and June 21, 2009
with the 2048x2048 pixel TEK5 camera. The field of view was 8.84"
on a side, at a scale of 0.259"/pix. The same set of filters was
always employed. For the analysis, 1815 V-band images and about a
hundred B-band images were used, the latter serving solely for the
construction of the color-magnitude diagram (CMD). The seeing ranged
from 0.7" to 2.5" and from 0.7" to 2.1" for V and B,
respectively, with a median of 1.5" for both filters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 60 20 Basic data of NGC 3201 variables discovered
within the present survey
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See also:
V/150 : Updated catalog of variable stars in globular clusters (Clement+ 2017)
J/other/RMxAA/50.307 : RR Lyr light curves in NGC 3201 (Arellano Ferro+, 2014)
J/AcA/66/31 : NGC 3201 variable stars in NGC 3201 (Kaluzny+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Id Variable name (Vnnn or VNnn) (1)
6- 14 F9.5 deg RAdeg Right ascension (J2000)
16- 24 F9.5 deg DEdeg Declination (J2000)
26- 31 F6.3 mag Vmag V magnitude
33- 37 F5.3 mag B-V ?=- B-V colour index
39- 42 F4.2 mag DV Amplitude in V band
44- 51 F8.6 d Per Period
53- 58 A6 --- Type Type (2)
60 A1 --- Memb [YU] Menbership code (3)
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Note (1): We follow the naming convention of Clement et al. (2001, 2012,
2001AJ....122.2587C 2001AJ....122.2587C, Cat. V/150) continued by Arellano Ferro et al.
(2014RMxAA..50..307A 2014RMxAA..50..307A, Cat. J/other/RMxAA/50.307), whose last cataloged star
was V124. Continued in Kaluzny et al., (2016, Cat. J/AcA/66/31).
V161-V175 and VN22-VN26 added.
Note (2): Type as follows:
EA = detached eclipsing binary
EW = contact eclipsing binary
SX = SX Phe-type pulsator
SP = spotted variable
BS = blue straggler
RG = red giant
Note (3): Membership code as follows:
Y = member
U = no membership data or data ambiguous
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 26-May-2023