Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...336..178p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 336, Jan. 1, 1989, p. 178-184.
Astronomy and Astrophysics
Astrophysics
8
Galactic Mass, Globular Clusters, Mass To Light Ratios, Milky Way Galaxy, Radial Velocity, Constraints, Dark Matter, Dwarf Galaxies
Scientific paper
Spectroscopic observations, obtained at 519 nm using an echelle spectrograph and reticon detector on the Multiple Mirror Telescope in 1986, are reported for four red giants in the Galactic globular cluster Palomar 15. The data are presented graphically and used to determine the weighted mean heliocentric velocity and galactocentric velocity of the cluster (+68.9 + or - 1.2 km/sec and +148 km/sec, respectively) and the perigalactic distance (20 kpc or more). It is inferred that the Galaxy has total mass of at least 2 x 10 to the 11th solar mass.
Latham David W.
Peterson Ruth C.
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