TSVSC1

TAROT SUSPECTED VARIABLE STAR CATALOG
Y. Damerdji1,2, A. Klotz2,1, M. Boer1
1Observatoire de Haute Provence
2Observatoire Midi Pyrénées


The TAROT Suspected Variable Star Catalog contains a compilation of optical light curves of periodic variable stars found in TAROT 2004-2006 images. These stars are not known in the 07/2006 edition of AAVSO database .

Download the paper. In this paper you will find details and methods.

sorted by .

Light curves are stored in one ASCII file per star. These files can be downloaded via hyperlinks after displaying the catalog. Light curves files are constitued by a header followed by data. You can download an archive containing all light curves.

Light curve filenames

TN-N222212012-9-67-2.txt
TN : Means TAROT North.
N222212012 : Index of the hierachical triangular mesh (HTM) on the celestial sphere where is the star.
9 : The 9th star in the HTM
67 : ASCII code of the filter (67=C)
2 : Camera identification (see paper)

Header section

NAME      = TN-N222212012-9  (designation of the star)
RA        = 109.988132 (right ascension)
DEC       =  30.501096 (declination)
EQUINOX   = J2000.0 (equinox)
FILTER    = C (filter)
CAMERANO  = 2 (# of camera: 1 or 2)
TAROT     = CALERN (TAROT station name)
MEAN      = 11.583593 (mean of observed magnitudes)
SIGMA     = 0.190831 (standard deviation of observed magnitudes)
AMPLITUDE = 3.069301 (total amplitude of observed magnitudes)
CRITVAR   = 0.087235 (criterium of variability)
PERIOD  = 0.57837500000 (best period calculated)
PERIODMI= 0.040000 (lowest period tried)
PERIODMA= 786.371791 (lowest period tried)
PERIODOT= 1.06348436088e-005 (period increment)
JDPHASE = 2453334.5014683860 (barycentric TT julian day at zero phase)
C1      = 11.581682 (constant of the Fourier coefficients)
A1      = 0.158633 (Fourier coefficients)
B1      = 0.014926
A2      = 0.064309
B2      = 0.025495
A3      = 0.038575
B3      = 0.021244
A4      = 0.016632
B4      = 0.000414
A5      = 0.001404
B5      = -0.005002
STDMODEL= 0.016381 (residues o-c)
END (this means end of the header. Next lines contains data)

Data section

 2453334.496583  11.468 0.005   0  (first observation)
 2453334.552141  11.470 0.005   0 (second observation)
 2453334.572964  11.440 0.005   0
 2453334.579912  11.440 0.005   0
 2453334.635424  11.451 0.004   2
 2453334.711224  11.540 0.003   0
One observation by line:

col 1 : UTC julian day of observation (mid exposure)
col 2 : magnitude compared to R USNO-A2 mag.
col 3 : uncertainties of magnitude (1 sigma)
col 4 : Sextractor flag

Sextractor flag interpretation:
0=no problem,
+1=biased by a neighboor,
+2=blended,
+4=satured,
+8=border,
+16=badpix,
>=+32=memory,

If flag=6, the object is saturated and linked to another one.
Only data with flag<8 are used.

Symbols in a light curve are :
. red dot : Sextractor flag = 0 and the measurement fills in the (fitted light curve +/- sigma/2) envelope
. green dot : Sextractor flag = 0 and the measurement fills out the (fitted light curve +/- sigma/2) envelope
+ black cross : Sextractor flag > 0

Foreach variable, three figures are available : the folded light curve with the automaticaly found period, the non-phased light curve and the folded light curve with the manualy determined period.

Tools to plot data

Matlab function plottsvsc.m is easy to use. Example : plottsvsc('TN-N222212012-9-67-2.txt');