II/194A Photometric study of IC 4665 (McCarthy+ 1969)
A photometric study of the open cluster IC 4665
McCARTHY M.F.S.J., O'SULLIVAN S.S.J.
<Ricerche Astron., 7, 483-498 (1969)>
=1969RA......7..483M 1969RA......7..483M (SIMBAD/NED RefCode)
ADC_Keywords: Clusters, open ; Photographic catalog
Summary:
Photographic observations of the open cluster IC 4665 made on blue
and yellow sensitive plates with the Vatican 40 cm refractor are
presented and discussed. Apparent magnitudes were determined for
200 stars by means of a program of photometric reduction designed
by BERTIAU. The mean internal errors in the final blue and yellow
magnitudes average about 0.02 mag. All stars selected for
measurement of proper motions by VASILEVSKIS on long base-line
Allegheny plates have been observed here. The forty stars which
VASILEVSKIS' proper motion measures have shown to be probable
members constitute a normal main sequence from V = 7 to V = 13.5,
followed by a gap of 0.2 to 0.3 mag, and a group of 10 stars in
the subgiant domain. The reality of this gap and the membership
characteristics of the stars in the subgiant region of the C - M
diagram are discussed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 67 29 Standard stars: photoelectric and
photographic data compared
table2 60 200 General catalogue of stars observed in
IC 4665 (Merging of tables 2,3,4)
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Byte-per-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 3 A3 --- Vno Number on the plate (Vasilevskis)
8- 10 I3 --- Kno [1/125]? Number in Kopff
17- 18 I2 --- Ano [1/31]? Number in Alcaino
25- 31 A7 --- BD Bonner Durchmustering identification
35- 39 F5.2 mag Vpe V photoelectric
41- 45 F5.2 mag (B-V)pe (B-V) color photoelectric
49- 53 F5.2 mag Vpg V photographic
56- 60 F5.2 mag (B-V)pg (B-V) photographic
65- 67 A3 --- Notes Notes as follows:
1 = pe data from Hogg & Kron, AJ 60, 365
2 = pe data from Johnson ApJ 119, 181
and ApJ 126, 121
3 = pe data (this paper)
4 = pe data from Coyne (priv. comm.)
5 = not used as yellow standard
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Byte-per-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 3 A3 --- Vno Number on the plate (Vasilevskis)
5- 7 I3 --- Kno [1/125]? Number in Kopff
11- 12 I2 --- Ano [1/31]? Number in Alcaino
16- 22 A7 --- BD Bonner Durchmustering identification
25- 29 F5.2 mag B [8/15]? Photographic B
31- 35 F5.2 mag V [6.8/14]? photographic V
37- 41 F5.2 mag (B-V) []? color
43- 46 F4.3 mag e_B []? mean error on B
48- 51 F4.3 mag e_V []? mean error on V
54 I1 --- Class [1/3]? 1=probable member, 2=Possible member,
3=Less possible member
58- 60 A3 --- Notes Notes as follows:
#1 = Less than 6 plates in B determination
#2 = Less than 6 plates in V determination
#3 = Identification from Kopff,
Mitt. Hamburger Sternw. 8, No 52
#4 = Suspected variable
#6 = Photoelectric data from Hogg & Kron,
AJ 60, 365
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Historical Notes:
* 02-Jun-1994: Keypunched at CDS, Strasbourg.
Tables 2, 3 and 4 merged into single file table2.
* 13-Jun-1995: errors corrected in table2 at CDS
Star 093 Ano is 25 (instead of 26)
Star 090 is BD+5 3483 (instead of BD+5 3843)
Star 105 Ano is 24 (instead of 4)
Star 033 Kno is 37 (instead of 38)
(End) M.-J. Wagner, James Marcout, Francois Ochsenbein [CDS] 12-Jun-1995