Contents of: II/124A/./adc.doc

The following document lists the file adc.doc from catalogue II/124A.
A plain copy of the file (without headers/trailers) may be downloaded.





                  Catalogue of UBV Photometry and MK Spectral


                    Types in Open Clusters (Third edition)



                               (Mermilliod 1986)



                Documentation for the Computer-Readable Version



                                 Anne C. Raugh

                                September 1987



                        Doc. No. STX-T-25-3002-0015-87

                             Contract NAS 5-28752



                                 Prepared for:

                 National Aeronautics and Space Administration

                          Goddard Space Flight Center

                              Greenbelt, MD 20771



                                 Prepared by:

                            ST Systems Corporation

                               4400 Forbes Blvd.

                            Lanham, Maryland 20706





                                   Abstract


   This document describes the computer-readable version of the Catalogue of
UBV Photometry and MK Spectral Types in Open Clusters (Third edition)
(Mermilliod 1986a) distributed by the Astronomical Data Center, NASA Goddard
Space Flight Center. This catalog is a compilation of UBV photoelectric
photometry and MK classifications published prior to mid-1986 for stars in 295
open clusters. Listed for each of 16,433 stars are identifications,
cross-identifications, V, B-V, U-B, spectral type, remarks on various
peculiarities, and references.
   The catalog is in five files. The first file contains the catalog data; the
second file lists references to the numbering of stars in each individual
cluster; the third file lists references to the photometry, sorted by journal;
the fourth file lists references to the spectral types, sorted by journal; and
the fifth file lists the references of the third and fourth files, sorted by
reference number and type. The present document describes the overall file
structure and the individual data fields.





Contents


1   Introduction                                                           2
    1.1     Description  ................................................  2
    1.2     References  .................................................  2


2   Structure                                                              2
    2.1     Each File as a Whole  .......................................  2
    2.2     Catalog (File 1 of 5)   .....................................  2
    2.3     Number References (File 2 of 5)  ............................  6
    2.4     UBV References (File 3 of 5)   ..............................  7
    2.5     MK References (File 4 of 5)  ................................  7
    2.6     Sorted References (File 5 of 5)   ...........................  7



3   History                                                                                             8
    3.1     Remarks and Modifications   .................................  8
    3.2     References to the Documentation  ............................  8


A   Mermilliod Numbering System                                            9


B   Errata                                                                10



List of Tables


    1       Summary Description of Catalog Files  .......................  3
    2       Catalog File Record Format  .................................  3
    3       Number Reference File Record Format  ........................  7
    4       Sorted Reference File Record Format  ........................  8
    5       Example Cluster Code Numbers    .............................  9
    6       Example Star Numbers    ..................................... 10



                                       1




   1 Introduction

   A copy of this document should be distributed with every copy of the
computer-readable catalog.


   1.1 Description

   The Catalogue of UBV Photometry and MK Spectral Types in Open Clusters
(Third edition) (UBVMK; Mermilliod 1986a) is a compilation of photoelectric UBV
photometry and MK spectral types published up to mid-1986 for 16,433 stars in
295 open clusters. It updates the 1976 edition (available on magnetic tape) and
contains nearly twice as much data as the earlier version.
   The catalog is in five files: the first file contains the catalog data; the
second file lists references to the numbering systems for each cluster; the
third file lists the references for the UBV data, sorted by journal; the fourth
file lists references for the MK spectral types, sorted by journal; and the
fifth file lists the combined references of the third and fourth files, sorted
by reference number and type.


   1.2 References

   Mermilliod, J.-C. 1976, CDS Inform. Bull., 11, 16.
   Mermilliod, J.-C. 1986a, CDS Inform. Bull., 31, 175.


   2 Structure


   2.1 Each File as a Whole

   The UBVMK consists of five files. Table 1 lists the machine-independent file
attributes. All records are of fixed length. The first file contains the
catalog data (Table 2); the second file lists the full forms of the references
to the individual cluster numbering systems (Table 3); the third file lists
references to the UBV photometry, sorted by journal; the fourth file lists
references to the MK spectral types, sorted by journal; and the fifth file
lists the combined references of the third and fourth files, sorted by
reference number and type (Table 4). Detailed descriptions of each file are
given in the following sections.
   Quotations in any of the following descriptions come from Mermilliod (1986a)
unless otherwise noted.


   2.2 Catalog (File 1 of 5)

   This file lists the catalog data. In all cases, a blank field indicates no
data.



                                       2




           _________________________________________________________
          |    Catalogue of UBV Photometry and MK Spectral Types    |
          |        in Open Clusters (Third edition) (UBVMK)         |
          |_________________________________________________________|
          |      |                    | Record | Record | Number of |
          | File |        Contents    | Format | Length |   Records |
          |______|____________________|________|________|___________|
          |   1  | Catalog            |  Fixed |  128   |  24,856   |
          |   2  | Number references  |  Fixed |   80   |     369   |
          |   3  | UBV references     |  Fixed |   80   |     981   |
          |   4  | MK references      |  Fixed |   80   |     528   |
          |   5  | Sorted references  |  Fixed |   80   |   1,240   |
          |______|____________________|________|________|___________|

                Table 1:  Summary Description of Catalog Files


             _____________________________________________________
            |         |         | Suggested  |                    |
            |  Bytes  |  Units  |   Format   |         Data       |
            |_________|_________|____________|____________________|
            |   1- 9  |         |    I9      | Mermilliod number  |
            |  10     |         |    A1      | Spectrum remark    |
            |  11-15  |         |    A5      | Original ID        |
            |  16-20  |         |    A5      | Proper motion ID   |
            |  21-26  |         |    I6      | HD/HDE number      |
            |  27     |         |    1X      | Blank              |
            |  28-29  |         |    A2      | DM Catalog Ident.  |
            |  30-37  |         |    A8      | DM number          |
            |  38     |         |    1X      | Blank              |
            |  39-45  |   mag   |    F7.3    | V                  |
            |  46-52  |   mag   |    F7.3    | B-V                |
            |  53-59  |   mag   |    F7.3    | U-B                |
            |  60-64  |         |    I5      | Photom. reference  |
            |  65     |         |    1X      | Blank              |
            |  66-76  |         |    A11     | MK Spectral type   |
            |  77-80  |         |    I4      | Spectral type ref. |
            |  81     |         |    1X      | Blank              |
            |  82-128 |         |    A47     | Remarks            |
            |_________|_________|____________|____________________|

                     Table 2:  Catalog File Record Format



                                           3




Mermilliod number    Number according to the system of Mermilliod (1978). A
                     short summary of the codes used in this catalog is
                     included below in Appendix A: "Mermilliod Numbering
                     System." The full forms of the references to the specific
                     numbering systems for each cluster are listed in the
                     second file. [bytes 1-9, format I9]

Spectrum remark      Single-character code. The following codes are defined by
                     Mermilliod (1986b):

                     D   Visual binary

                     B   Spectroscopic binary

                     P   Peculiar star

                     E   Emission-line star

                     V   Variable star

                     [byte 10, format A1]

Original ID          Identification of the star as listed in the reference for
                     the data [bytes 11-15, format A5]

Proper motion ID     Identification of the star as listed in the proper motion
                     study. The full form of the reference to the proper motion
                     study is included in the second file along with the
                     reference to the numbering system [bytes 16-20, format A5]

HD/HDE number        [bytes 21-26, format I6]

DM number            [bytes 28-37, format A2,A8]

V                    In magnitudes [bytes 39-45, format F7.3]

B-V                  In magnitudes [bytes 46-52, format F7.3]

U-B                  In magnitudes [bytes 53-59, format F7.3]

Photom. reference    Code number of the reference for the UBV photometry. The
                     full forms of these references are listed in the third
                     file by journal and in the fifth file by reference number.
                     [bytes 60-64, format I5]

MK spectral type     [bytes 66-76, format A11]

Spectral type ref.   Code number of the reference to the MK spectral type. The
                     full forms of these references are listed in the fourth
                     file by journal and in the fifth file by reference number.
                     [bytes 77-80, format I4]

                                       4




Remarks              "Remarks on duplicity, variability, peculiarity and fur-
                     ther cross-identifications." The following abbreviations
                     are used in the cross-identifications:

                     HR     Hoffleit, D. 1964, Catalogue of Bright Stars
                            (New Haven, Connecticut: Yale University
                            Observatory). Hoffleit, D. and Jaschek, C. 1982,
                            Bright Star Catalogue. 4th Revised Edition (New
                            Haven, Connecticut: Yale University Observatory).

                     IDS    Jeffers, H. M., van den Bos, W. H., and Greeby, F.
                            M. 1963, Index Catalog of Double Stars (1976.5):
                            (Pub. Lick Obs., 21, 17).

                     ADS    Aitken, R. G. 1932, New General Catalogue of
                            Double Stars within 120O of the North Pole
                            (Washington D.C.: Carnegie Inst. of Washington;
                            Publ. No. 416).

                     NLS    Hardorp, J. et al. 1959-65, Luminous Stars in the
                            Northern Milky Way I-VI (Hamburg-Bergedorf: Ham-
                            burger Sternwart - Warner and Swasey Observatory).

                     LSS    Stephenson, C. B. and Sanduleak, N. 1971, Luminous
                            Stars in the Southern Milky Way: (Pub. Warner &
                            Swasey Obs., 1, 100).

                     AS     Merrill, P. W. and Burwell, C. G. 1950, Astrophys.
                            J., 112, 72.

                     BATTEN Batten, A. H., Fletcher, J. M., and Mann, P. J.
                            1978, Pub. Dom. Astrophys. Obs., 15, No. 15.

                     BSD    Bergedorfer Spektral-Durchmusterung of the
                            Selected Area (No. 1-115) Potsdamer
                            Spektral-Durchmusterung.

                     CCS    Stephenson, C. B. 1973, Pub. Warner and Swasey
                            Obs., 1, No. 4.

                     GL     Gliese, W. 1969, Catalogue of Nearby Stars
                            (Heidelberg: Veroeff. Astron. Rechen-Inst.; No.
                            22).

                     HE3    Henize, K. G. 1976, Astrophys. J. Suppl. Ser., 30,
                            491.

                     HRC    Herbig, G. H. and Rao, N. K. 1972, Astrophys. J.,
                            174, 401.



                                       5




                  IRC    Neugebauer, G. and Leighton, R. B. 1969, Two-
                         Micron Sky Survey, NASA SP-3047.

                  KS     Klare, G. and Szeidel, B. 1966, Veroeff.
                         Landessternw. Heidelberg, No. 18.

                  MCC    McConnell, D. J. 1981, Astron. Astrophys. Suppl.
                         Ser., 44, 387.

                  MWC    Merrill, P. W. and Burwell, C. G. 1933, Astrophys.
                         J., 78, 87.
                         Merrill, P. W. and Burwell, C. G. 1943, Astrophys.
                         J., 98, 153.
                         Merrill, P. W. and Burwell, C. G. 1949, Astrophys.
                         J., 110, 387.

                  PLF    Pleiades Flare Stars Unified Numbering

                  ROA    Woolley, R. et al. 1970, Royal Obs. Ann., No. 5.

                  SOS    Loden, L. O., Loden, K., Nordstroem, B., and Sund-
                         man, A. 1976, Astron. Astrophys. Suppl. Ser., 23,
                         283.

                  SS     Stephenson, C. B. and Sanduleak, N. 1977,
                         Astrophys. J. Suppl. Ser., 33, 459.


                  VES    Coyne, G. et al. 1974, Vatican Obs. Publ., 1, No. 5.
                         Coyne, G. et al. 1975, Vatican Obs. Publ., 1, No. 6.
                         Coyne, G. et al. 1976, Vatican Obs. Publ., 1, No. 8.
                         Coyne, G. et al. 1977, Vatican Obs. Publ., 1, No. 11.
                         Coyne, G. et al. 1978, Vatican Obs. Publ., 1, No. 12.

                  [bytes 82-128, format A47]


   2.3 Number References (File 2 of 5)

   This file lists the reference to the numbering system for each individual
cluster and to the proper motion study, if any.


Group designation    Template for the object numbers of members of this
                     cluster, in the system of Mermilliod (1978). The object
                     number field has been replaced by "BBBB." See Appendix A:
                     "Mermilliod Numbering System" for a short summary of the
                     codes used in this catalog. [bytes 3-11, format A9]



                                        6




                  ___________________________________________
                 |         | Suggested  |                    |
                 |  Bytes  |   Format   |       Data         |
                 |_________|____________|____________________|
                 |   1- 2  |    2X      | Blank              |
                 |   3-11  |    A9      | Group designation  |
                 |  12-14  |    3X      | Blank              |
                 |  15-80  |    A66     | Reference          |
                 |_________|____________|____________________|

                 Table 3:  Number Reference File Record Format


Reference            Full form of the reference in which the numbers for the
                     stars in this cluster are defined. "*" in column 80
                     indicates that a reference to the proper motion study
                     follows. [bytes 15-80, format A66]


   2.4 UBV References (File 3 of 5)

   This file contains references to the UBV photometry, sorted by journal and
reference number. The numbers by which the references are cited in the first
file appear on the left and are followed by the volume number, page number, and
author(s). References from different journals are separated by a heading
containing the name of the journal. This file is formatted as 80 byte lines of
text which can be read and printed out with a FORTRAN A80 format.


   2.5 MK References (File 4 of 5)

   This file contains the references to the spectral types listed in the first
file. It is organized in the same manner as the third file (see Section 2.4).
The file is formatted as 80 byte lines of text which can be read and printed
out with a FORTRAN A80 format.


   2.6 Sorted References (File 5 of 5)

   This file contains the references of the third and fourth file, sorted by
reference number and type (photometry or spectral type). The photometry
references are listed first, followed by the spectral type references.


Number Code          number by which this reference is cited in the appropriate
                     field of the catalog file [bytes 1-4, format I4]

Type                 Single character: "P" indicates that this is a photometry
                     reference; "S" indicates that this is a spectral type
                     reference. [byte 5, format A1]


                                       7



                      _________________________________
                     |         | Suggested |           |
                     |  Bytes  |   Format  |    Data   |
                     |_________|___________|___________|
                     |  1- 4   |    I4     | Number    |
                     |  5      |    A1     | Type      |
                     |  6      |    1X     | Blank     |
                     |  7-80   |    A74    | Reference |
                     |_________|___________|___________|

                 Table 4:  Sorted Reference File Record Format

Reference            Full form of the reference. When bytes 1-5 are blank this
                     field continues the reference of the previous record.
                     [bytes 7-80, format A74]


   3 History


   3.1 Remarks and Modifications

   The Catalogue of UBV Photometry and MK Spectral Types in Open Clusters
(Third edition) (UBVMK) was received by the Astronomical Data Center (ADC),
NASA Goddard Space Flight Center, from the Centre de Donnees Astronomiques,
Strasbourg (CDS), in December 1986.
   The original tape consisted of five text files: the first file contained a
de- scription of the catalog files and has been incorporated into this
document; the second file contained the catalog data; the third file listed the
references to the cluster numbering systems; the fourth file listed the UBV
references; and the fifth file listed the spectral index references.
   Several records in the data file were found to have one or more of the data
fields shifted by one byte to the right or left. These were corrected by means
of an editor. The cluster numbers in the numbering reference file were
reformatted slightly to match the format of the star identifications in the
data file. ADC personnel created the fifth file of sorted references by
reformatting and sorting the third and fourth files and combining them into a
single file.
   A FORTRAN program was run to check the validity of each field according to
its data type and value. Three typographical errors were discovered and were
corrected by another FORTRAN program. A list of all changes made to the data
file is included in Appendix B: "Errata."


3.2       References  to  the  Documentation

Mermilliod, J. -C. 1978, CDS Inform.  Bull., No.  14, 32.
Mermilliod, J. -C. 1986a, CDS Inform.  Bull., 31, 175.
Mermilliod, J. -C. 1986b, unpublished documentation received with the catalog
   from the CDS.
Mermilliod, J. -C. 1987, private communication.


                                       8




   Appendix A  Mermilliod Numbering System

   The numbering system used to identify objects in this catalog is that
developed at Lausanne and described by Mermilliod (1978). This summary
description is taken directly from Mermilliod (1986b).
   The code number is divided into three sections. The first digit indicates
the source catalog or type of cluster. The following numbers are used in this
catalog:

                       2        NGC
                       3        IC
                       4        Anonymous cluster
                       5        Anonymous cluster

   The next four digits are the number of the cluster in the indicated catalog.
The following anonymous clusters appear:

                       40901    Blanco 1 (Zeta Scl)
                       431XX    Stock's clusters
                       435XX    Trumpler's clusters
                       51XXX    Collinder's clusters
                       52XXX    Melotte's clusters

   "XX" and "XXX" represent the cluster number in the list of the cited author.
   The last four digits represent the number of the star in the indicated
cluster. The references that define the numbering system for each cluster are
listed in the second file, sorted by catalog and cluster number.

                    _______________________________________
                   |  Cluster |                            |
                   |  Number  |        Cluster Name        |
                   |__________|____________________________|
                   |  20869   |  H Persei                  |
                   |  20884   |  Chi Persei                |
                   |  21976   |  Orion Nebula Cluster      |
                   |  22632   |  Praesepe                  |
                   |  22682   |  M67                       |
                   |  32391   |  Omicron Velorum           |
                   |  32601   |  Theta Carinae             |
                   |  40901   |  Zeta Sculptoris           |
                   |  43516   |  Eta Carinae               |
                   |  52020   |  Alpha Persei (MEL 20)     |
                   |  52022   |  Pleiades (MEL 22)         |
                   |  52025   |  Hyades (MEL 25)           |
                   |  52111   |  Coma Berenices (MEL 111)  |
                   |__________|____________________________|

                    Table 5:  Example Cluster Code Numbers



                                       9




          ___________________________________________________________
         |  Mermilliod  |                | Same As |                 |
         |    Number    |     Read As    | Star #  |   In Cluster    |
         |______________|________________|_________|_________________|
         |  201290200   |  2 0129 0200   |   200   |  NGC 129        |
         |  346650032   |  3 4665 0032   |    32   |  IC 4665        |
         |  431140012   |  4 31 14 0012  |    12   |  Stock 14       |
         |  435100008   |  4 35 10 0008  |     8   |  Trumpler 10    |
         |  511210003   |  5 1 121 0003  |     3   |  Collinder 121  |
         |  520221438   |  5 2 022 1438  |  1438   |  The Pleiades   |
         |______________|________________|_________|_________________|

                        Table 6:  Example Star Numbers



   B Errata


   Several typographical errors were discovered during the preparation of the
UB- VMK catalog file. Following is a list of record numbers in the catalog file
and a description of the changes made to each record.

   ________________________________________________________________________
  |  Record  |                                                             |
  |  Number  |                  Correction                                 |
  |__________|_____________________________________________________________|
  |   2792   |  Changed letter "l" in byte 54 to "+"                       |
  |   3111   |  Changed ";" in byte 49 to "."                              |
  |   2926   |  Realigned photometry reference and spectral type           |
  |   5913   |  Realigned HD number and suffix                             |
  |   8120   |  Realigned identification fields                            |
  |   8146   |  Realigned identification fields                            |
  |   8259   |  Deleted proper motion identification number repeated in HD |
  |          |  number field                                               |
  |  19370   |  Changed HD number from "137735" to "13735"                 |
  |__________|_____________________________________________________________|








                                       10


© UDS/CNRS

Contact