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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
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:

       FileName      Lrecl  Records   Explanations

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


Byte-by-byte Description of file: catalog.dat

   Bytes Format  Units   Label    Explanations

   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)

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); 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). This reference is also useful for
    finding the published Carte du Ciel numbers.
Note (5): McNamara & Sanders, =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".


Byte-by-byte Description of file: ident.dat

   Bytes Format  Units   Label    Explanations

   1-  4  I4     ----    SeqNo    [1/7931]+ The present Catalogue number.
   5-  8  A4     ----    NEB      Identification with Ebbighausen E.G., 1940,
                                    (1940ApJ....92..434E)
   9- 13  I5     ----    NG       [1/634]? Identification numbers from
                                    Glushkova E.V., 1991, Soviet Astron.,
                                    vol 35, 466 (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)
  20- 27  A8     ----    BD       Bonner Durchmusterung I/122 number.


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