I/203 Proper Motions, UBV-Phot. & Spectral Class Region 7092 (Platais 1994)
Catalogue of Proper Motions, UBV-Photometry and Spectral Classification of the
region of NGC 7092 (M39)
Platais I.
<Bull. Inf. CDS 44, 9 (1994)>
=1994BICDS..44....9P 1994BICDS..44....9P
ADC_Keywords: Photometry, UBV ; Positional data ; Proper motions
Abstract:
A catalogue of positions, proper motions and photographic
UBV-magnitudes for 7931 stars in and around the open cluster
NGC 7092 (M39) is presented. The Catalogue is complete down to
B=16.0m and covers an area with diameter of ∼110'. The spectral
types are provided for 511 stars generally brighter than B=13.0m.
For convenience, basic cross-identifications are also included.
Refer to the file "intro.txt" for full details about the catalogue.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
intro.txt 80 258 Introduction to catalog by I. Platais
catalog.dat 113 7931 The Catalogue in the region of NGC 7092
ident.dat 80 269 Cross-identifications
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Byte-per-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 4 I4 ---- SeqNo [1/7931]+ Sequential number of the star.
6- 9 I4 ---- NL ? Identification from Lavdovsky (3)
11- 14 I4 ---- NAK ? Identification from Artiukhina+ (4)
16- 19 I4 ---- NMS ? Identification from McNamara+ (5)
21- 28 F8.4 mm X Rectangular coordinate in millimeters (1)
30- 37 F8.4 mm Y Rectangular coordinate in millimeters (1)
39- 43 I5 0.1mas/yr pmX Relative proper motions in X (2)
45- 49 I5 0.1mas/yr pmY Relative proper motions in Y (2)
50- 52 I3 0.1mas/yr e_pm Mean standard error of proper motions (6)
54- 56 I3 % Pr Calculated membership probabilities (7)
58- 62 F5.2 mag V Photographic UBV-photometry data.
(see also n_UBV in byte 89)
64- 68 F5.2 mag B-V Photographic UBV-photometry data.
(see also n_UBV in byte 89)
70- 74 F5.2 mag U-B Photographic UBV-photometry data.
(see also n_UBV in byte 89)
76- 82 A7 --- SpType Spectral types and luminosity classes. A
finding chart for all classified stars
is available in Platais (1988).
84- 87 I4 --- Plate Designated plate numbers. An omitted pair
number is replaced by zero
88 I1 --- n_XY [0,1] "1" indicates that the X,Y-coordinates
were transformed from another first-epoch
plate into the system of plate B187.
89 I1 ---- n_UBV [0,1] "1" is set for all stars having
corrupted UBV-photometry.
91- 92 I2 h RAh Right Ascension (hours), Equinox=J2000
and Epoch=J2000
94- 95 I2 min RAm Right Ascension J2000 (minutes)
97-101 F5.2 s RAs Right Ascension J2000 (seconds)
103 A1 --- DE- Declination J2000 (sign)
104-105 I2 deg DEd Declination J2000 (degrees)
107-108 I2 arcmin DEm Declination J2000 (minutes)
110-113 F4.1 arcsec DEs Declination J2000 (seconds)
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Note (1): Rectangular coordinates are derived from the ASCORECORD
measurements of the deepest Pulkovo normal astrograph first-epoch
plate B187 (scale=59.57"/mm; epoch=1909.65; equatorial coordinates at
the optical center X=Y=0.0 mm: A=21 hours 32 minutes and 1.3 seconds,
D=48 degrees 19 minutes and 34 seconds (J2000.0)). The X,Y-coordinate
system is oriented reasonably close to the equatorial system at the
equinox 1950.0.
Note (2): The proper motions are determined relative to the mean
of the field stars at about B=14.0m.
Note (3): star number from Lavdovsky, 1961, Trudy Pulkovo Obs.,
Ser. 2, vol. 73, 5 (1961TrPul..73....5L 1961TrPul..73....5L); star numbers in his
catalogue are increased by adding 1030.
Note (4): Artiukhina and Kalinina, 1970, Trudy Sternberg Astron. Inst.,
vol. 40, 3 (1970TrSht..40....3A 1970TrSht..40....3A). This reference is also useful for
finding the published Carte du Ciel numbers.
Note (5): McNamara & Sanders, =1977A&AS...30...45M 1977A&AS...30...45M .
A finding chart for all numbered stars is available.
Note (6): Formal mean standard error of proper motions (equal errors
in X- and Y-coordinate have been adopted). The mean error is
calculated for an ensemble of stars in a limited magnitude interval
and at a given position in the field.
Note (7): Calculated membership probabilities in percent for the cluster
NGC 7092. All probable members of Anon (C2128+488) are marked with
fake probabilities equal to "-99".
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Byte-per-byte Description of file: ident.dat
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Bytes Format Units Label Explanations
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1- 4 I4 ---- SeqNo [1/7931]+ The present Catalogue number.
5- 8 A4 ---- NEB Identification with Ebbighausen E.G., 1940,
(1940ApJ....92..434E 1940ApJ....92..434E)
9- 13 I5 ---- NG [1/634]? Identification numbers from
Glushkova E.V., 1991, Soviet Astron.,
vol 35, 466 (1991AZh....68..936G 1991AZh....68..936G). Only
a list of probable cluster members
is available.
14- 18 I5 ---- NM [1/128]? Identification number from
Maevers F.-W., 1940, Astron. Nachr.,
vol. 270, 201. (1940AN....270..201M 1940AN....270..201M)
20- 27 A8 ---- BD Bonner Durchmusterung I/122 number.
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History:
* 31-Jan-1994: first archived at CDS (Francois Ochsenbein)
* 03-Feb-1997: standardized description
* 08-Aug-2004: The position of the star#1409 was corrected
from 21:29:16.32+47:57:59.7 to 21:29:17.20+47:47:04.7
(Tycho-2 position) thanks to a note from Brian Skiff.
(End) Francois Ochsenbein [CDS] 03-Feb-1997