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Catalogue of UBV Photometry and MK Spectral Types in Open Clusters (Third edition) 2014-12-19

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

This document describes the computer-readable version of the Catalogue of UBV Photometry and MK Spectral Typesin 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:

\listoftables \pagebreak

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 t:filfig lists the machine-independent file attributes. All records are of fixed length. The first file contains the catalog data (Table t:catfig); the second file lists the full forms of the references to the individual cluster numbering systems (Table t:numfig); 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 t:reffig). 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.

    \centering
                                      |
    |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 | |
    Summary Description of Catalog Files

    2.2  Catalog (File 1 of 5)

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

    \centering
                                             |
    | |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 Identification | |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 | |
    Catalog File Record Format

    20ex

  • [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):

    4ex

  • [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]

  • [Remarks] ``Remarks on duplicity, variability, peculiarity and further 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 120 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: Hamburger 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.

  • [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 Sundman, 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.

    \centering
                                             |
    |Suggested || |Bytes |Format |Data | |
    1- 2 |2X |Blank | |3-11 |A9 |Group designation | |12-14 |3X |Blank | |15-80 |A66 |Reference | |
    Number Reference File Record Format

    20ex

  • [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]

  • [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 s:prfhd). 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.

    \centering
                                             |
    |Suggested || |Bytes |Format |Data | |
    1- 4 |I4 |Number | |5 |A1 |Type | |6 |1X |Blank | |7-80 |A74 |Reference | |
    Sorted Reference File Record Format

    20ex

  • [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]

  • [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 Données Astronomiques, Strasbourg (CDS), in December 1986.

    The original tape consisted of five text files: the first file contained a description 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.

    \pagebreak

    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:

    < NGC
    3 IC
    4 Anonymous cluster

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

    < Blanco 1 (ζ Scl)
    431XX Stock's clusters
    435XX Trumpler's clusters
    51XXX Collinder'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.

    \centering
                              |
    Cluster || |Number |Cluster Name | |
    20869 |H Persei | |20884 |χ Persei | |21976 |Orion Nebula Cluster | |22632 |Praesepe | |22682 |M67 | |32391 |o Velorum | |32601 |θ Carinae | |40901 |ζ Sculptoris | |43516 |η Carinae | |52020 |α Persei (MEL 20) | |52022 |Pleiades (MEL 22) | |52025 |Hyades (MEL 25) | |52111 |Coma Berenices (MEL 111) | |
    Example Cluster Code Numbers

    \centering
    |
    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 | |
    Example Star Numbers

    \pagebreak

    B  Errata

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

    \centering
    |
    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'' | |


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