J/A+A/388/149 CCD Vilnius photometry of M56 (Smriglio+, 2002)
CCD photometry in the Vilnius system in the vicinity of the
globular cluster M 56.
Smriglio F., Dasgupta A.K., Boyle R.P.
<Astron. Astrophys. 388, 149 (2002)>
=2002A&A...388..149S 2002A&A...388..149S
ADC_Keywords: Clusters, globular ; Photometry, Vilnius ; Photometry, CCD
Keywords: stars: fundamental parameters - stars: general -
galaxy: globular clusters: individual: M 56
Abstract:
CCD observations of field stars in an area north-east of the globular
cluster M 56 were obtained in six bands of the Vilnius photometric
system. The data sets cover a field of 9'x9.5'. An outline of the data
pathway from observations to reduction via IRAF is outlined in this
text. Photometry of 366 stars brighter than 18th V magnitude has been
obtained and the analysis of the observational errors is discussed.
Description:
The observations using six Vilnius filters (P, X, Y, Z, V, S) were
made on three nights in July 1995, October 1995 and July 1996 with the
1.52m telescope of the Osservatorio Astronomico di Bologna at Loiano
(Italy).
Objects:
----------------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------------
19 16 35.5 +30 11 04 M 56 = NGC 6779
19 16 30.543 +30 17 16.41 [SDB2003] 364 = Cl* NGC 6779 JAN 53
19 16 37 +30 23 48 [SDB2003] 310 = Cl* NGC 6779 JAN 56
19 16 39 +30 18 54 [SDB2003] 294 = Cl* NGC 6779 JAN 58
19 16 40.4 +30 19 00 [SDB2003] 273 = Cl* NGC 6779 JAN 59
19 16 41.5 +30 17 37 [SDB2003] 259 = Cl* NGC 6779 JAN 60
19 16 43 +30 15 54 [SDB2003] 244 = Cl* NGC 6779 JAN 63
19 16 43.1 +30 17 06 [SDB2003] 241 = Cl* NGC 6779 JAN 64
19 16 49.4 +30 22 36 [SDB2003] 181 = Cl* NGC 6779 JAN 66
19 16 56 +30 23 30 [SDB2003] 115 = Cl* NGC 6779 JAN 70
19 17 01.717 +30 23 33.84 [SDB2003] 75 = Cl* NGC 6779 JAN 71
----------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table5.dat 53 366 CCD photometry in the Vilnius system
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- [SDB2003] Sequential number
5- 10 F6.1 pix Xpos X position (1)
12- 17 F6.1 pix Ypos Y position (1)
19- 23 F5.2 mag Vmag Vilnius V magnitude
25- 28 F4.2 mag Y-V ? Vilnius Y-V colour index
30- 33 F4.2 mag P-X ? Vilnius P-X colour index
35- 38 F4.2 mag X-Y ? Vilnius X-Y colour index
40- 43 F4.2 mag Y-Z ? Vilnius Y-Z colour index
45- 48 F4.2 mag Z-V ? Vilnius Z-V colour index
50- 53 F4.2 mag V-S ? Vilnius V-S colour index
--------------------------------------------------------------------------------
Note (1): The central pixel (Xc: 512; Yc: 512) is at
19:14:53.7+30:14:22 (1950.0) = 19:16:50.6+30:19:48 (J2000.0)
The X, Y pixel coordinates have respective origin at the East and
South. North is up, east is to the left. 1 pix = 0.5625"
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Boyle et al., Paper I 1990A&AS...84....1B 1990A&AS...84....1B
Janulis Paper II 1986VilOB..75....8J 1986VilOB..75....8J, Cl* NGC 6779 Jan NNN
(End) James Marcout, Patricia Bauer [CDS] 11-Mar-2003