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J/A+AS/111/75 UBVRI CCD photometry of NGC 4755 (Sagar+, 1995)
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A deep UBVRI CCD photometric study of the moderately young southern open
star cluster NGC 4755 = {kappa} Crucis
Sagar R., Cannon R.D.
<Astron. Astrophys. Suppl. Ser. 111, 75 (1995)>
=1995A&AS..111...75S (SIMBAD/NED Reference)
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ADC_Keywords: Clusters, open; Photometry, CCD; Photometry, UBVRI
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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4 72 813 UBVRI photometry
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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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)
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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.
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References:
Arp H.C., van Sant C.T., 1958, AJ, 63, 341
Dachs J., Kaiser D., 1984, A&AS, 58, 411
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(End) Patricia Bauer [CDS] 06-Jan-1995