J/A+A/374/504 UBVI photometry of NGC 7654 (Pandey+, 2001) ================================================================================ NGC 7654: An interesting cluster to study star formation history Pandey, A.K., Nilakshi, Ogura, K., Sagar, R., Tarusawa, K. =2001A&A...374..504P ================================================================================ ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, UBVRI Keywords: open cluster; spatial structure, mass function, star formation Description: File table2.dat contains the photometric data of the stars in the field of NGC 7654. The stars are numbered in the increasing order of their radial distance from the cluster center. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 23 24 12 +61 35.0 NGC 7654 = M 52 ---------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 114 17862 UBVI_C_ photometric data of the stars in the field of NGC 7654 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- No Identification number of the stars 8- 15 F8.2 pix Xpos Pixel coordinate (1) 17- 24 F8.2 pix Ypos Pixel coordinate (1) 28- 33 F6.3 mag Vmag Magnitude in the V (Johnson) band 35- 41 F7.3 mag B-V ? B-V colour index 42 A1 --- n_B-V [*] *: no value 44- 49 F6.3 mag V-I ? V-I (Cousins) colour index 50 A1 --- n_V-I [*] *: no value 52- 57 F6.3 mag U-B ? U-B colour index 58 A1 --- n_U-B [*] *: no value 61- 65 F5.3 mag e_Imag ? Errors in the I (Cousin) band 66 A1 --- n_Imag [*] no value 69- 73 F5.3 mag e_Vmag Errors in the V (Johnson) band 77- 81 F5.3 mag e_Bmag ? Errors in the B (Johnson) band 82 A1 --- n_Bmag [*] *: no value 85- 89 F5.3 mag e_Umag ? Errors in the U (Johnson) band 90 A1 --- n_Umag [*] *: no value 93- 97 F5.3 --- Chi Chi parameter in the V (Johnson) band 100- 105 F6.3 --- Sharp Sharpness parameter in the V (Johnson) band (2) 106- 114 F9.3 arcsec Radius Radial distance of the stars from the cluster center X=855, Y=755 -------------------------------------------------------------------------------- Note (1): Pixel coordinates: Origin: X=0, Y=0 Orientation East: X=0 West: X=1600 South: Y=0 North: Y=1600 1 pix = 1.5 arcsec Cluster center (X=855, Y=755), RA=23 24 12, DE=+61 35.0 (2000) in Simbad Note (2): Sharpness parameter, which measures how well the PSF fits the object. -------------------------------------------------------------------------------- Acknowledgements: A.K. Pandey ================================================================================ (End) Patricia Bauer [CDS] 12-Jul-2001