NSSDC/WDC-A-R&S 83-14 DOCUMENTATION FOR THE MACHINE-READABLE VERSION OF THE REVISED CATALOGUE OF STELLAR ROTATIONAL VELOCITIES OF UESUGI AND FUKUDA (1982) Wayne H. Warren Jr. October 1983 National Space Science Data Center (NSSDC)/ World Data Center A for Rockets and Satellites (WDC-A-R&S) National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland 20771 DOCUMENTATION FOR THE MACHINE-READABLE VERSION OF THE REVISED CATALOGUE OF STELLAR ROTATIONAL VELOCITIES OF UESUGI AND FUKUDA (1982) Wayne H. Warren Jr. ABSTRACT Descriptions of the contents and formats of the data and reference files of the machine-readable catalog are given. The catalog provides v sin (i) data, on the old Slettebak system, for 6472 stars, with source references given in a second file. ii TABLE OF CONTENTS Section 1 - INTRODUCTION AND SOURCE REFERENCE ....................... 1-1 Section 2 - FILE CONTENTS ........................................... 2-1 Section 3 - FILE CHARACTERISTICS .................................... 3-1 Section 4 - REMARKS, MODIFICATIONS, ACKNOWLEDGMENTS AND REFERENCES .......................................... 4-1 LIST OF TABLES Table 1 File Contents, Data File ....................................... 2-1 2 File Contents, Reference File .................................. 2-2 3 File Characteristics ........................................... 3-1 iii SECTION 1 - INTRODUCTION AND SOURCE REFERENCE The machine-readable "Revised Catalogue of Stellar Rotational Velocities" (Uesugi and Fukuda 1982) provides mean v sin (i) data on the old Slettebak system (Slettebak 1949, 1954, 1955, 1956; Slettebak and Howard 1955) for 6472 stars. The catalog results from the review, analysis and transformation of 11460 data from 102 sources. Included in the computerized version are star identification (major catalog number, name if the star has one, or cluster identification, etc.), a mean projected rotational velocity, and a list of source references. The references are given in a second file included with the catalog when it is distributed on compact disc. This version of the machine-readable catalog is comprehensive and supersedes the earlier compilation of Uesugi and Fukuda (1970). This document describes the machine-readable catalog as it is currently being distributed from the Astronomical Data Center. It is intended to enable users to read and process the data without problems and guesswork. Additional details concerning the compilation and analysis of the data can be found in Uesugi and Fukuda (1981). A copy of the document should be supplied to anyone receiving a secondary copy of the machine-readable files. SOURCE REFERENCE Uesugi, A. and Fukuda, I. 1982, Revised Catalogue of Stellar Rotational Velocities, Department of Astronomy, Kyoto Univ., Kyoto, Japan. 1-1 SECTION 2 - FILE CONTENTS Byte-by-byte descriptions of the contents of the "Revised Catalogue of Stellar Rotational Velocities" files are given in Tables 1 and 2. The suggested format specifications apply to FORTRAN formatted reads and can be modified depending upon individual programming and processing requirements. Default values are always blanks for fields read with character formats. Alternate format specifications are given in parentheses. Table 1. File Contents. Revised Catalogue of Stellar Rotational Velocities. Data File. Suggested Default Byte(s) Units Format Value Description 1- 6 --- I6 (A6) blank Number in the "Henry Draper Catalogue" (HD, Cannon and Pickering 1918-1924) or its extensions (Cannon 1925-1936; Cannon and Walton Mayall 1949). 7- 9 --- A3 --- Component identifications (A, B, ...) for multiple stars or additional HD number in form "/X" if more than one HD star is included in the measurement. 10-21 --- 12A1 --- Name of star, e.g. Flamsteed and/ or Bayer designation and constellation abbreviation, variable-star name, cluster identification and number, Durchmusterung number for non-HD stars. Parenthesized letters denote lower case. 22-24 --- 3X --- Blank 25-26 --- A2 --- Representative character if an upper or lower limit for v sin (i) is given; the characters <, >, <=, or >=. 2-1 Table 1. (concluded) Suggested Default Byte(s) Units Format Value Description 27-29 km/sec I3 --- Projected rotational velocity, v sin (i), as determined from all available observations and transformed to the old Slettebak system. 30 --- A1 --- A colon (:) if the derived mean is uncertain due to disagreement among the observations. 31 --- A1 --- A colon (:) if the derived mean is very uncertain, i.e. a double colon (::) in bytes 30-31 denotes extreme uncertainty (e.g. HD 206773). 32 --- I1 --- Number of measurements (n) included in the v sin (i) value reported. This should always be equal to the number of sources given in bytes 33-80. For numbers greater than 9, A=10; B=11; C=12. 33-80 --- 8A4 (nA4) --- Source reference numbers or codes for the data included in the reported v sin (i). Reference codes are given in groups of 4 bytes. Table 2. File Contents. Revised Catalogue of Stellar Rotational Velocities. Reference File. Byte(s) Description 1- 4 Reference code cited in the data file. The field is blank for continuation lines. 5-80 Reference. 2-2 SECTION 3 - FILE CHARACTERISTICS The information contained in Table 3 is sufficient for a user to describe the indigenous characteristics of the files of the Revised Catalogue of Stellar Rotational Velocities to a computer. Information easily varied from installation to installation, such as block size (physical record length), blocking factor (number of logical records per physical record), total number of blocks, file density, and internal coding (EBCDIC, ASCII) is not included for tapes. These parameters should always be supplied if secondary copies are transmitted to other installations. Parameters relating to the two files of the catalogue are separated by commas. Table 3. File Characteristics. Revised Catalogue of Stellar Rotational Velocities. NUMBER OF FILES .................................................. 2 LOGICAL RECORD LENGTH ............................................ 80, 80 RECORD FORMAT .................................................... Fixed TOTAL NUMBER OF LOGICAL RECORDS .................................. 6472, 109 3-1 SECTION 4 - REMARKS, MODIFICATIONS, ACKNOWLEDGMENTS AND REFERENCES A magnetic tape containing the "Revised Catalogue of Stellar Rotational Velocities" was received from the Astronomical Data Center, Japan, on 4 March 1983. Minor modifications, as described below, were made to the data file in order to effect a more homogeneous format consistent with other computerized catalogs. 1. The HD field contained a zero for every non-HD star; these were converted to blanks. 2. The abbreviations "BD", "CD", and "CP" were added to Durchmusterung (DM) numbers where they were absent. The abbreviation CP already occurred for CPD stars in the zones -22 degrees to -52 degrees where CD numbers are ordinarily used (following the HD convention). An unknown character (not in the published version) occurred in the Name field after all zone numbers for DM identifications. All occurrences of this character were changed to blanks. ACKNOWLEDGMENTS Appreciation is expressed to K. Sadakane of Osaka University for personally transmitting our request for a copy of the tape to the Astronomical Data Center, Japan, and to Y. Terashita and A. Hayashi for preparing and supplying the magnetic tape. REFERENCES Cannon, A. J. 1925-1936, The Henry Draper Extension, Ann. Astron. Obs. Harvard College 100. Cannon, A. J. and Pickering, E. C. 1918-1924, The Henry Draper Catalogue, Ann. Astron. Obs. Harvard College 91-99. Cannon, A. J. and Walton Mayall, M. 1949, The Henry Draper Extension, The Annie J. Cannon Memorial Volume, Ann. Astron. Obs. Harvard College 112. Fukuda, I. 1982, Publ. Astron. Soc. Pacific 94, 271. Slettebak, A. 1949, Astrophys. J. 110, 498. Slettebak, A. 1954, Astrophys. J. 119, 146. 4-1 REFERENCES (concluded) Slettebak, A. 1955, Astrophys. J. 121, 653. Slettebak, A. 1956, Astrophys. J. 124, 173. Slettebak, A. and Howard, R. F. 1955, Astrophys. J. 121, 102. Uesugi, A. and Fukuda, I. 1970, A Catalog of Rotational Velocities of the Stars, Mem. Fac. Sci. Kyoto Univ., Ser. Phys., Astrophys., Geophys., Chem. 33, 205. Uesugi, A. and Fukuda, I. 1981, in Data for Science and Technology, Proc. 7th International CODATA Conf., ed. P. S. Glaeser (Oxford:Pergamon Press), p. 201. Uesugi, A. and Fukuda, I. 1982, Revised Catalogue of Stellar Rotational Velocities, Department of Astronomy, Kyoto Univ., Kyoto, Japan. 4-2