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The Astrophysical Journal Supplement Series, 45:259-334 .259W The Astrophysical Journal Supplement Series, 45:259-334, 1981 February 45. © 1981. The American Astronomical Society. All rights reserved. Printed in U.S.A. ... 198lApJS A CATALOG OF RADIAL VELOCITIES IN GALACTIC GLOBULAR CLUSTERS1 R. F. Webbink Department of Astronomy, University of Illinois at Urbana-Champaign Received 1980 February 25; accepted 1980 July 9 ABSTRACT A catalog of all stellar and integrated radial velocities of galactic globular clusters published prior to 1980 is assembled here. Known systematic errors in the data are discussed, and data on 686 stars and 85 globular clusters are presented in the body of the catalog; an Appendix lists published radial velocities in 4 dwarf spheroidal satellites of the Galaxy. Weighted mean velocities for each of the 89 systems in the catalog and Appendix are calculated. Subject headings: clusters: globular— stars: catalogs I. INTRODUCTION data. No catalog of individual stellar and cluster veloci- Radial velocities of galactic globular clusters were ties exists as such. first obtained in the pioneering surveys by Slipher (1918, The present catalog is intended to fill the need for a 1919, 1922, 1924), at Lowell Observatory, and by San- comprehensive listing of all available globular cluster ford (1918, 1919a,6), at Mount Wilson, who together radial velocity data and to provide a systematic reassess- obtained velocities of 18 clusters. In the more than 60 ment of the cluster velocities on this basis. To the best of years since those studies, several other radial velocity the author’s knowledge, all data published prior to 1980 surveys have been published, of which the most exten- January 1 are included here. Table 1 lists the 85 globular sive, by far, are those by Mayall (1946) and Kinman clusters included in the catalog, plus 4 dwarf spheroidal (1959). The surveys of Joy (1949), van den Bergh (1969), satellites of the Galaxy which are included in the Ap- Zinn (1974), and Hartwick and Sargent (1978) are also pendix, along with their equatorial and galactic coordi- noteworthy for their extent. At this writing, an ambi- nates. These coordinates have been compiled from tious redetermination of globular cluster velocities by numerous sources and refer to the dynamical centers, Hesser and Shawl is underway, using a Fabry-Perot with typical uncertainties of less than 0T in each coordi- radial velocity interferometer, which promises a substan- nate. tial improvement in the data available for many clusters The format of the catalog is described in detail in § II. (see Smith, Hesser, and Shawl 1976; Hesser and Shawl Section III deals with systematic corrections to the 1977). In addition, a number of detailed studies of published radial velocities, and § IV with the method of individual clusters have been published, of which those weighting individual velocities and the calculation of of NGC 104 (47 Tue) by Feast and Thackeray (1960), stellar and cluster mean velocities. The deduced veloci- NGC 5139 (co Cen) by Harding (1965), and NGC 5272 ties for each of the 85 globular clusters in the catalog (M 3) by Gunn and Griffin (1979) are noteworthy for and the four dwarf spheroidal systems in the Appendix both their extent and their accuracy. The accessibility of are tabulated in § V. individual stars for close study has been greatly ex- panded in the past decade through the use of image-tube II. DESCRIPTION OF THE CATALOG spectra, photoelectric radial velocity spectrometers, and correlation techniques. Ousters are arranged in order of increasing right Compilations of cluster velocities have been published ascension at equinox 1860.0. This is the equinox adopted by Strömberg (1925), Moore (1932), Edmondson (1935), originally in the New General Catalogue (Dreyer 1888) Mayall (1946), Kinman (1959), Kukarkin (1974), and, and thus places the NGC clusters in numerical order. most recently, Harris and Racine (1979). While each of For each cluster, radial velocities based on integrated these compilations incorporates intermediate results, that spectra are Usted first, followed by velocities for individ- of Kinman, which is still in widespread use, is the last to ual stars within the cluster. Where an astrometric cata- be truly comprehensive in its treatment of all available log of the cluster exists, those stars identified in that catalog are Usted first in numerical order, foUowed by any nonvariable stars identified in other sources, and 1 Supported in part by National Science Foundation grant AST finaUy any variable stars not included in the primary 78-12309. catalog. In many cases, no astrometric catalog exists; a 259 © American Astronomical Society • Provided by the NASA Astrophysics Data System .259W TABLE 1 45. Clusters Included in the Catalog ... a (1950) 6 (1950) Cluster h m s 198lApJS NGC 104 (47 Tue) 00 21 53 -72 21.5 305.895 -44.989 NGC 288 00 50 19 -26 51.1 151.193 -89.378 NGC 364 01 01 32 -71 07.0 301.534 -46.247 NGC 1261 03 10 54 -55 24.1 270.537 -52.125 Pal 1 03 26 01 +79 24.7 130.065 +19.029 Eridanus (GC1 0422-213) 04 22 35 -21 18.0 218.105 -41.332 Pal 2 04 42 55 +31 17.5 170.532 -09.069 NGC 1851 05 12 28 -40 06.1 244.512 -35.036 NGC 1904 (M 79) 05 22 08 -24 34.2 227.231 -29.350 NGC 2298 06 47 13 -35 56.7 245.626 -16.006 NGC 2419 07 34 46 +38 59.7 180.370 +25.243 NGC 2808 09 11 05 -64 39.4 282.193 -11.252 Pal 3 (Sextans C) 10 02 58 +00 19.0 240.142 +41.867 NGC 3201 10 15 34 -46 09.8 277.231 +08.640 Pal 4 (Ursa Major) 11 26 37 +29 15.3 202.293 +71.801 NGC 4147 12 07 33 +18 49.2 252.847 +77.189 NGC 4372 12 22 53 -72 22.6 300.997 -09.878 NGC 4590 (M 68) 12 36 48 -26 28.1 299.625 +36.052 NGC 4833 12 56 14 -70 36.4 303.606 -08.015 NGC 5024 (M 53) 13 10 28 +18 26.0 332.960 +79.764 NGC 5139 (o) Cen) 13 23 47 -47 13.1 309.101 +14.971 NGC 5272 (M 3) 13 39 53 +28 37.8 042.220 +78.708 NGC 5286 13 43 16 -51 07.5 311.615 +10.568 NGC 5466 14 03 14 +28 46.5 042.156 +73.585 NGC 5634 14 27 00 -05 45.3 342.210 +49.260 NGC 5694 14 36 42 -26 19.4 331.056 +30.360 NGC 5824 15 00 54 -32 52.4 332.555 +22.070 NGC 5904 (M 5) 15 16 01 +02 15.8 003.859 +46.797 NGC 5927 15 24 23 -50 30.0 326.604 +04.860 NGC 5986 15 42 47 -37 37.4 337.029 +13.274 Pal 14 (A-vdB) 16 08 41 +15 05.2 028.744 +42.197 NGC 6093 (M 80) 16 14 03 -22 51.2 352.673 +19.463 NGC 6121 (M 4) 16 20 31 -26 24.5 350.975 +15.974 NGC 6139 16 24 17 -38 44.3 342.365 +06.939 NGC 6171 (M 107) 16 29 43 -12 56.9 003.372 +23.013 NGC 6205 (M 13) 16 39 53 +36 33.2 059.006 +40.915 NGC 6218 (M 12) 16 44 38 -01 51.6 015.715 +26.313 NGC 6229 16 45 34 -K7 36.9 073.638 +40.306 NGC 6254 (M 10) 16 54 31 -04 01.6 015.136 +23.073 NGC 6266 (M 62) 16 58 02 -30 02.4 353.575 +07.318 NGC 6273 (M 19) 16 59 33 -26 11.8 356.870 +09.382 NGC 6284 17 01 25 -24 41.8 358.347 +09.939 NGC 6293 17 07 03 -26 31.2 357.620 +07.834 NGC 6304 17 11 22 -29 24.4 355.825 +05.374 NGC 6333 (M 9) 17 16 16 -18 27.9 005.544 +10.705 NGC 6341 (M 92) 17 15 35 +43 11.4 068.339 +34.858 NGC 6356 17 20 40 -17 46.1 006.723 +10.220 NGC 6362 17 26 45 -67 00.7 325.554 -17.570 NGC 6388 17 32 38 -44 42.3 345.556 -06.738 NGC 6397 17 36 37 -53 39.0 338.163 -11.959 260 © American Astronomical Society • Provided by the NASA Astrophysics Data System .259W TABLE 1 —Continued 45. ... a (1950) <$ (1950) Cluster h m s NGC 6402 (M 14) 17 34 58 -03 13.1 021.323 +14.805 NGC 6440 17 45 55 -20 20.7 007.729 +03.800 198lApJS NGC 6441 17 46 49 -37 02.3 353.532 -05.006 NGC 6522 18 00 23 -30 02.2 001.026 -03.929 NGC 6528 18 01 37 -30 03.6 001.138 -04.175 NGC 6541 18 04 25 -43 43.4 349.286 -11.188 NGC 6544 18 04 1 5 -25 00.3 005.837 -02.201 NGC 6553 18 06 11 -25 55.1 005.253 -03.029 NGC 6584 18 14 38 -52 14.2 342.143 -16.415 NGC 6624 18 20 28 -30 23.3 002.788 -07.913 NGC 6626 (M 28) 18 21 28 -24 53.8 007.799 -05.580 NGC 6637 (M 69) 18 28 08 -32 23.1 001.722 -10.270 NGC 6638 18 27 51 -25 32.0 007.896 -07.152 NGC 6642 18 28 52 -23 30.7 009.814 -06.439 NGC 6652 18 32 29 -33 02.0 001.533 -11.378 NGC 6656 (M 22) 18 33 21 -23 56.9 009.890 -07.552 NGC 6681 (M 70) 18 39 57 -32 20.5 002.853 -12.509 NGC 6712 18 50 20 -08 46.2 025.352 -04.318 NGC 6715 (M 54) 18 51 51 -30 32.7 005.607 -14.087 NGC 6723 18 56 11 -36 42.1 000.070 -17.299 NGC 6752 19 06 28 -60 03.9 336.495 -25.628 NGC 6779 (M 56) 19 14 39 +30 05.6 062.659 +08.336 NGC 6809 (M 55) 19 36 49 -31 04.5 008.798 -23.268 Pal 11 19 42 32 -08 07.7 031.806 -15.576 NGC 6838 (M 71) 19 51 31 +18 38.7 056.740 -04.560 NGC 6864 (M 75) 20 03 08 -22 03.9 020.304 -25.748 NGC 6934 20 31 45 +07 14.0 052.104 -18.894 NGC 6981 (M 72) 20 50 43 -12 43.6 035.163 -32.683 NGC 7006 20 59 09 +15 59.4 063.769 -19.407 NGC 7078 (M 15) 21 27 33 +11 56.8 065.013 -27.313 NGC 7089 (M 2) 21 30 53 -01 02.8 053.371 -35.770 NGC 7099 (M 30) 21 37 32 -23 24.4 027.179 -46.835 Pal 12 (Capricorn) 21 43 50 -21 29.1 030.509 -47.681 Pal 13 (Pegasus) 23 04 14 +12 30.2 087.104 -42.698 NGC 7492 23 05 50 -15 52.8 053.395 -63.480 Dwarf Spheroidal Systems Sculptor 00 57 44 -34 00.4 287.685 -83.133 Fornax 02 37 50 -34 44.4 237.294 -65.654 Ursa Minor (DDO 199) 15 08 1 2 +67 23.0 104.969 +44.843 Draco (DDO 208) 17 19 13 +57 57.5 086.363 +34.746 261 © American Astronomical Society • Provided by the NASA Astrophysics Data System .259W 262 WEBBINK Vol.
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