J/A+AS/111/75 UBVRI CCD photometry of NGC 4755 (Sagar+, 1995) ================================================================================ A deep UBVRI CCD photometric study of the moderately young southern open star cluster NGC 4755 = {kappa} Crucis SAGAR R., CANNON R.D. =1995A&AS..111...75S (SIMBAD/NED Reference) ================================================================================ Keywords: stars: formation - HR diagram - open clusters and associations: individual: NGC 4755 Description: CCD observations in U, B, V, R and I passbands have been used to generate (U-B), (B-V) colour-colour and deep V, (B-V); V, (U-B) and V, (V-I) colour-magnitude diagrams for the young open cluster NGC 4755. The sample consists of 813 stars reaching down to V about 20mag. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table4 72 813 UBVRI photometry -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1 I1 --- Region [1-2] Region number (1) 3- 5 I3 --- No star number 7- 12 F6.2 pix X X coordinate 14- 19 F6.2 pix Y Y coordinate 21- 25 F5.2 mag Vmag V magnitude 27- 31 F5.2 mag U-B []? U-B colour 33- 36 F4.2 mag B-V []? B-V colour 38- 41 F4.2 mag V-R []? V-R colour 43- 46 F4.2 mag V-I []? V-I colour 48 I1 --- o_Umag []? Number of observations in U 50 I1 --- o_Bmag []? Number of observations in B 52 I1 --- o_Vmag Number of observations in V 54 I1 --- o_Rmag []? Number of observations in R 56 I1 --- o_Imag []? Number of observations in I 58- 71 A14 --- OtherName Cross identification of stars. (2) -------------------------------------------------------------------------------- Note (1): The center of Region 1 is located ~3.2 arcmin south-west while that of Region 2 ~3.5 arcmin north-east to the cluster center marked by Dachs & Kaiser (1984). Note (2): Stars observed by Arp & van Sant (1958) and Dachs & Kaiser (1984) in the photoelectric and photographic system have been prefixed with AV and DK respectively. The candidates for pre-main sequence stars are identified as PMS in the last column. -------------------------------------------------------------------------------- References: Arp H.C., van Sant C.T., 1958, AJ, 63, 341 Dachs J., Kaiser D., 1984, A&AS, 58, 411 -------------------------------------------------------------------------------- ================================================================================ (End) Patricia Bauer [CDS] 06-Jan-1995