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J/A+A/339/423       Velocities of red giants in NGC 752 (Mermilliod+ 1998)
Red giants in open clusters: VIII. NGC 752
    Mermilliod J.-C., Mathieu R.D., Latham D.W., Mayor M.
   <Astron. Astrophys. 339, 423 (1998)>
   =1998A&A...339..423M
ADC_Keywords: Clusters, open ; Stars, giant ; Radial velocities

Keywords: techniques: radial velocities - binary: spectroscopic -
          Hertzsprung-Russel (HR) diagram -
          open clusters and associations: individual: NGC 752

Abstract:
    The results of an 18-year radial-velocity survey of 30 red giants in
    the field of the open cluster NGC 752 are presented. The membership of
    15 stars is confirmed. Four spectroscopic binaries have been
    discovered among the members and three orbits have been determined for
    H75, 110 and 208, with periods of 3321, 127 and 5276 days
    respectively. The binary frequency (27%) is normal. A search for
    additional members in a wide surrounding area (2°) yielded two
    possible new members: both are clump red giant candidates. The red
    giant distribution in the colour-magnitude diagram is somewhat
    unusual, with a clump containing 8 stars and a second, fainter feature
    extending to the blue, defined by 3 or 4 stars, which is not accounted
    for by theoretical isochrones.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
stars.dat         72       30   List of stars
table4a.dat       30      409   CORAVEL radial velocity data
table4b.dat       30       84   CfA radial velocity data


See also:
 J/A+A/299/53  : Red giants in NGC 3680 and IC 4651 (Mermilliod+, 1995)
 J/A+A/307/80  : Velocities of red giants in NGC 2099 (Mermilliod+ 1996)
 J/A+A/319/481 : Radial velocities of 10 spectros. binaries (Mermilliod+ 1997)
 J/A+A/324/91  : Melotte 71 red giants radial velocities (Mermilliod+ 1997)
 J/A+A/375/30  : Radial velocities in open clusters (Mermilliod+, 2001)
 J/A+A/423/189 : NGC 2477 red giants UBV phot. & RV (Eigenbrod+, 2004)


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

   Bytes Format Units   Label     Explanations

   1-  5  A5    ---     StID      Star number denomination, as in tables 4
   7-  8  I2    h       RAh       Right Ascension J2000 (hours) (1)
  10- 11  I2    min     RAm       Right Ascension J2000 (minutes) (1)
  13- 16  F4.1  s       RAs       Right Ascension J2000 (seconds) (1)
      18  A1    ---     DE-       Declination J2000 (sign) (1)
  19- 20  I2    deg     DEd       Declination J2000 (degrees) (1)
  22- 23  I2    arcmin  DEm       Declination J2000 (minutes) (1)
  25- 26  I2    arcsec  DEs       ?Declination J2000 (seconds) (1)
  31- 72  A42   ---   OtherNames  Other designations

Note (1): data extracted from SIMBAD



Byte-by-byte Description of file: table4a.dat table4b.dat

   Bytes Format Units   Label     Explanations

   1-  5  A5    ---     StID      Star number denomination (1)
   7- 17  F11.3 d       HJD       Heliocentric Julian Date
  19- 24  F6.2  km/s    RV        Radial velocity
  26- 29  F4.2  km/s    e_RV      Error on the radial velocity

Note (1): The numbering system used for NGC 752 is from:
          H: Heinemann K. 1926AN....227..193H, NGC 752 NNN in Simbad
          J: Junkvist S. 1931, Medd. Astron. Obs. Upsala no 52
          N: concerning 3 stars:
          N1367 = Platais 1263 (Cl* NGC 752 PLA 1263 in Simbad)
                = Ebb. A3 (Cl* NGC 752 EBBI A3 in Simbad)
          N1175 = Platais 212 (Cl* NGC 752 PLA 212 in Simbad)
          N2054 = Platais 172 (Cl* NGC 752 PLA 172 in Simbad)


Acknowledgements: Jean-Claude Mermilliod 


References:
   Mermilliod & Mayor, Paper I.       1989A&A...219..125M
   Mermilliod et al.,  Paper II.      1989A&AS...79...11M
   Mermilliod & Mayor, Paper III.     1990A&A...237...61M
   Mermilliod et al.,  Paper IV.      1995A&A...299...53M, Cat. J/A+A/299/53
   Mermilliod et al.,  Paper V.       1996A&A...307...80M, Cat. J/A+A/307/80
   Mermilliod et al.,  Paper VI.      1997A&A...319..481M, Cat. J/A+A/319/481
   Mermilliod et al.,  Paper VII.     1997A&A...324...91M, Cat. J/A+A/324/91
   Mermilliod et al.,  Paper IX.      2001A&A...375...30M, Cat. J/A+A/375/30
(End)                                         Patricia Bauer [CDS]   22-Sep-1998