ADC/CDS Standard Document for Catalog:/journal_tables/A+AS/121/455/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/A+AS/121/455 BVI photometry of stars in Berkeley 18 (Kaluzny 1997)
================================================================================
CCD Photometry of distant open clusters: III. Berkeley 18.
Kaluzny J.
<Astron. Astrophys. Suppl. Ser. 121, 455 (1997)>
=1997A&AS..121..455K (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Photometry, CCD ; Clusters, open
Keywords: open clusters and associations: individual: Berkeley 18 - HR diagram
Abstract:
We present CCD BVI photometry for Berkeley 18, a rich open cluster
located in the Galactic anticenter. The cluster age is similar to, or
marginally lower than age of M 67. Its distance is estimated at
5.8kpc and the reddening E(B-V) is probably higher than 0.46. Our data
indicate that Be 18 is one of the most populous objects in the whole
sample of known galactic open clusters. The angular diameter of the
cluster is estimated at 26arcmin, which corresponds to a linear size
of about 44pc. The horizontal branch of Be 18 exhibits a large width
in comparison with other old open clusters.
Objects:
----------------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------------
05 22.2 +45 24 Berkeley 18 = C 0518+453
----------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3 62 2041 BV photometry of stars from Berkeley 18 field
October 91, 2.1-m telescope data
table4 81 987 BV photometry of stars from Berkeley 18 field
October 92, 2.1-m telescope data
table5 81 8255 BV photometry of stars from Berkeley 18 field
October 92, 0.9-m telescope data
--------------------------------------------------------------------------------
See also:
J/A+AS/108/151 : Berkeley 22 & Berkeley 29 CCD photometry (Kaluzny, 1994)
J/A+AS/114/1 : CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995)
J/A+AS/133/25 : CCD BVI photometry of Trumpler 5 (Kaluzny 1998)
Byte-by-byte Description of file: table3 table4 table5
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- ID ID number
9- 15 F7.2 pix Xpos X coordinate (1)
17- 24 F8.2 pix Ypos Y coordinate (1)
26- 31 F6.3 mag Vmag V magnitude
34- 38 F5.3 mag e_Vmag rms uncertainty on Vmag
41 I1 --- o_Vmag number of averaged V measurements
43 I1 --- q_Vmag quality flag for Vmag (2)
45- 50 F6.3 mag B-V ? B-V color index
53- 57 F5.3 mag e_B-V ? rms uncertainty on B-V (3)
60 I1 --- o_B-V Number of averaged B measurements
62 I1 --- q_B-V Quality flag for B-V
64- 69 F6.3 mag V-I ? V-I color index
72- 76 F5.3 mag e_V-I ? rms uncertainty on V-I (3)
79 I1 --- o_V-I ? Number of averaged I measurements
81 I1 --- q_V-I ? Quality flag for V-I
--------------------------------------------------------------------------------
Note (1): 1 pixel=0.30 arcsec;
X axis points toward North; Y axis points toward East
Note (2): q=1 means relatively poor quality
Note (3): blank means "unknown color"
--------------------------------------------------------------------------------
Acknowledgements: Janusz Kaluzny <jka@vela.astrouw.edu.pl>
================================================================================
(End) Patricia Bauer [CDS] 24-Jun-1996