J/MNRAS/310/982 UBVI CCD Photometry of M11 - II. (Sung+ 1999)
UBVI CCD Photometry of M11. II. New Photometry and surface density profiles
Sung H., Bessell M.S., Lee H.-W., Kang Y.H., Lee S.-W.
<Mon. Not. R. Astron. Soc. 310, 982 (1999)>
=1999MNRAS.310..982S 1999MNRAS.310..982S
ADC_Keywords: Clusters, open; HR diagrams; Photometry, UBVRI
Keywords: stars: evolution - Hertzsprung-Russell (HR) diagram -
stars: luminosity function, mass function -
open clusters and associations: individual: M11 (NGC 6705)
Description:
This directory contains Johnson-Cousins UBVI photometric data for M11
(NGC 6705) and a neighboring field (around PN G027.4-03.5). The
photometric data for M11 are tightly matched to the SAAO E-region
standard system (Menzies et al. SAAO Circ., 1989SAAOC..13....1M 1989SAAOC..13....1M;
Menzies et al., 1991MNRAS.248..642M 1991MNRAS.248..642M; Kilkenny et al.,
1998MNRAS.294...93K 1998MNRAS.294...93K). For the PN G027.4-03.5 region, the standard
system of Landolt (1992, Cat. II/183) was used and small systematic
difference in photometry between the two tables may be present, in
particular in (U-B). Table 2 contains UBVI data for 14,179 stars
brighter than V=17mag in M11 (about 40arcmin x 40arcmin region). The
star numbers and proper motion memberships by McNamara et al.
(1977A&AS...27..117M 1977A&AS...27..117M) and Su et al. (1998, Cat. J/A+AS/128/255) are
also identified and included. Table 3 contains UBVI data for 3,676
stars around PN G027.4-03.5.
Objects:
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RA (2000) DE Name(s)
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18 51 4 -06 16.5 M11(NGC 6705)
18 53 44 -06 28.7 Scutum Cloud
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 107 14179 Photometric data for M11
table3.dat 83 3676 Photometric data for PN G027.4-03.5
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- SBL Running number
<Cl* NGC 6705 SBL NNNNNN> in Simbad
8- 14 F7.3 arcmin dRA [-20/20] δRA relative to M11 center (1)
16- 22 F7.3 arcmin dDE [-20/20] δDE relative to M11 center (1)
24- 29 F6.3 mag Vmag [8/17] Johnson V magnitude
31- 36 F6.3 mag V-I Johnson-Cousins V-I color index
38- 43 F6.3 mag B-V Johnson B-V color index
45- 50 F6.3 mag U-B Johnson U-B color index
52- 57 F6.3 mag e_Vmag Error in V magnitude
59- 63 F5.3 mag e_V-I Error in V-I
65- 69 F5.3 mag e_B-V Error in B-V
71- 75 F5.3 mag e_U-B Error in U-B
77- 78 I2 --- o_Vmag Number of obs in V magnitude
80- 81 I2 --- o_V-I Number of obs in V-I
83- 84 I2 --- o_B-V Number of obs in B-V
86- 87 I2 --- o_U-B Number of obs in U-B
89- 92 I4 --- MPS ? ID of McNamara et al. (1977A&AS...27..117M 1977A&AS...27..117M)
93 A1 --- Md [AB] Duplicity in McNamara et al. (2)
94 A1 --- pmG [abc] proper motion quality group of
McNamara et al. (1977A&AS...27..117M 1977A&AS...27..117M) (3)
95- 98 F4.2 % Mpr [0/1]? membership probability from
McNamara et al. (1977A&AS...27..117M 1977A&AS...27..117M)
100-102 I3 --- SZT ? ID of Su et al. (1998A&AS..128..255S 1998A&AS..128..255S)
103 A1 --- Sd [AB] Duplicity in Su et al. (2)
(1998A&AS..128..255S 1998A&AS..128..255S)
104-107 F4.2 % Spr [0/1]? membership probability from Su et al.
(1998A&AS..128..255S 1998A&AS..128..255S)
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Note (1): Cluster center (J2000): 18:51:04-06:16.5
Note (2): single in McNamara et al. (1977A&AS...27..117M 1977A&AS...27..117M) or
Su et al. (1998A&AS..128..255S 1998A&AS..128..255S), but double in photometry;
A represents the brighter component, B the fainter component
Note (3): a=group 1, b=group 2, c=group 3
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- [SBL99] Running number
<[SBL99] PN G27.4-3.5 NNNNNN> in Simbad
8- 14 F7.3 arcmin dRA [-12/9] δRA relative to RA_center (1)
16- 22 F7.3 arcmin dDE [-11/11] δDE relative to DE_center (1)
24- 29 F6.3 mag Vmag [9/17] Johnson V magnitude
31- 36 F6.3 mag V-I Johnson-Cousins V-I color index
38- 43 F6.3 mag B-V Johnson B-V color index
45- 50 F6.3 mag U-B Johnson U-B color index
52- 57 F6.3 mag e_Vmag Error in V magnitude
59- 63 F5.3 mag e_V-I Error in V-I
65- 69 F5.3 mag e_B-V Error in B-V
71- 75 F5.3 mag e_U-B Error in U-B
77 I1 --- o_Vmag Number of obs in V magnitude
79 I1 --- o_V-I Number of obs in V-I
81 I1 --- o_B-V Number of obs in B-V
83 I1 --- o_U-B Number of obs in U-B
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Note (1): Cluster center (J2000): 18:53:44-06:28.7
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Acknowledgements: Hwankyung Sung, sungh(at)boao.re.kr
References:
Sung et al., 1996, J. Korean Astron. Soc. 29, 269
(End) Gail L. Schneider [SSDOO/ADC] 8-Mar-2000