J/A+AS/127/423 VI photometry of Westerlund 1 and 2 (Piatti+ 1998) ================================================================================ Fundamental parameters of the highly reddened young open clusters Westerlund 1 and 2 Piatti A.E., Bica E., Claria J.J. =1998A&AS..127..423P (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, open ; Photometry, CCD Keywords: open clusters: individual: Weterlund 1, Westerlund 2 - open clusters: general - HR diagram Description: We have carried out CCD observations of stars in the region of the open cluster Westerlund 1 through the V and I passbands. The direct images were obtained with the 24-inch telescope of the University of Toronto Southern Observatory situated at Las Campanas Observatory, Chile. After cross-correlating all independent V, (V-I) tables we have obtained a improved set of colour and magnitude values as compared to those based on a single measure. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 16 48.2 -45 50 Westerlund 1 = C 1644-457 10 23.9 -57 45 Westerlund 2 = C 1022-575 ---------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table 59 233 Photometric data -------------------------------------------------------------------------------- Byte-by-byte Description of file: table -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 A3 --- ID Star number 7- 12 F6.2 pix Xpos X coordinate (1) 16- 21 F6.2 pix Ypos Y coordinate (1) 25- 30 F6.3 mag Vmag V magnitude 34- 38 F5.3 mag e_Vmag ? V magnitude error 42- 46 F5.3 mag V-I V-I colour 50- 54 F5.3 mag e_V-I ? V-I colour error 58 I1 --- o_Vmag Number of measurements -------------------------------------------------------------------------------- Note (1): X and Y coordinates increase toward the north and west, respectively. -------------------------------------------------------------------------------- Acknowledgements: Andres Piatti ================================================================================ (End) Patricia Bauer [CDS] 02-Jun-1997