J/A+A/376/561 Rc light curves of 7 variables in M37 (Kiss+, 2001)
A variable star survey of the open cluster M 37.
Kiss L.L., Szabo G.M., Sziladi K., Furesz G., Sarneczky K., Csak B.
<Astron. Astrophys. 376, 561 (2001)>
=2001A&A...376..561K 2001A&A...376..561K
ADC_Keywords: Clusters, open ; Stars, variable ; Photometry, CCD ;
Photometry, Cousins
Keywords: open clusters and associations: general -
open clusters and associations: individual: M 37 -
stars: variables: general - stars: variables: delta Sct -
stars: binaries: eclipsing
Abstract:
A CCD photometric study of the dense galactic open cluster M 37 is
discussed. The majority of the analysed data have been obtained
through an RC filter in order to collect time-series measurements.
The observations were carried out on seven nights between December
1999 and February 2000, and have led to the discovery of 7 new
variable stars in the field. Three of them have been unambiguously
identified as W UMa-type eclipsing binaries, while two more are
monoperiodic pulsating stars, most probably high-amplitude δ
Scuti-type variables. Two stars seem to be long-period eclipsing
binaries without firm period determination. The individual light curve
data are presented here.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 78 7 The basic data of new variables
v1.dat 19 313 Cl* NGC 2099 KSS V1 instrumental RC data
v2.dat 19 370 Cl* NGC 2099 KSS V2 instrumental RC data
v3.dat 19 330 Cl* NGC 2099 KSS V3 instrumental RC data
v4.dat 19 420 Cl* NGC 2099 KSS V4 instrumental RC data
v5.dat 19 212 Cl* NGC 2099 KSS V5 instrumental RC data
v6.dat 19 354 Cl* NGC 2099 KSS V6 instrumental RC data
v7.dat 19 185 Cl* NGC 2099 KSS V7 instrumental RC data
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- KSS Star name (Cl* NGC 2099 KSS VN in Simbad)
4- 5 I2 h RAh Right ascension (J2000)
7- 8 I2 min RAm Right ascension (J2000)
10- 14 F5.2 s RAs Right ascension (J2000)
16 A1 --- DE- Declination sign (J2000)
17- 18 I2 deg DEd Declination sign (J2000)
20- 21 I2 arcmin DEm Declination sign (J2000)
23- 26 F4.1 arcsec DEs Declination sign (J2000)
28- 32 F5.2 mag <Vmag> Average V magnitude
34- 37 F4.2 mag <B-V> ? Average B-V colour index
39- 46 F8.6 d Per ? Period
48- 50 I3 10-6d e_Per ? rms uncertainty on Per
52- 55 F4.2 mag A ? Absorption
57- 68 F12.4 d Epoch ? Epoch of observation
69 A1 --- u_Epoch rms uncertainty on Epoch
70- 73 A4 --- n_Epoch Note on light curve (1)
75- 78 A4 --- Type Variable type (2)
--------------------------------------------------------------------------------
Note (1): Light curve type:
I: The light curve is typical of an W UMa-type star
II: The light curve shape is very characteristic for a contact binary
Note (2): Variable type :
EA: Eclipsing binaries of Algol-type
EW: Eclipsing binaries of W UMa-type
DSTC: Pulsating variable of δ Scuti-type
--------------------------------------------------------------------------------
Byte-by-byte Description of file: v?.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 F12.4 d JD Julian Date
14- 19 F6.3 mag Rmag Instrumental RC magnitude
--------------------------------------------------------------------------------
Acknowledgements: Laszlo Kiss
(End) Patricia Bauer [CDS] 25-Oct-2001