منابع مشابه
Globular Cluster Evolution in M 87 and Fundamental Plane
The globular cluster population in M87 has decreased measurably through dynamical evolution caused by relaxation, binary heating and time-dependent tidal perturbation. For fundamental plane ellipticals in general, cluster populations evolve more rapidly in smaller galaxies because of the higher mass density. A simple evolutionary model reproduces the observed trend in specific frequency with lu...
متن کاملThe globular cluster distributions in the Galaxy , M 31 and M 87 : are many globulars disappeared to the galactic centres ? ”
ASTRONOMY AND ASTROPHYSICS 1.2.2008 " The globular cluster distributions in the Galaxy, M31 and M87: are many globulars disappeared to the galactic centres? " Abstract. The radial distribution of globular clusters in our Galaxy, M31 and M87 is studied and compared with that of halo stars. The globular cluster distributions seem significantly flatter than those of the stars bulge. Assuming this ...
متن کاملBurst from the Globular Cluster M 28
We report the discovery of an unusual X-ray burst from the direction of the Globular Cluster M28 using data acquired with the ASCA Observatory. The burst was recorded by all four ASCA telescopes and displays a fast ( < ∼ 70 ms) rise followed by an exponential decay (τ = 7.5 s) and a steady afterglow which lasts between 800 – 3250 s. The image of the burst is consistent with an ASCA point source...
متن کاملLuminosity Function of Faint Globular Clusters in M 87
We present the luminosity function to very faint magnitudes for the globular clusters in M87, based on a 30 orbit Hubble Space Telescope (HST) WFPC2 imaging program. The very deep images and corresponding improved false source rejection allow us to probe the mass function further beyond the turnover than has been done before. We compare our luminosity function to those that have been observed i...
متن کاملDynamics of Stars and Globular Clusters in M 87
We examine the dynamics of the stars and globular clusters in the nearby giant galaxy M87 and constrain the mass distribution, using all the available data over a large range of radii, including higher-order moments of the stellar line-of-sight velocity distributions and the discrete velocities of over two hundred globular clusters. We introduce an extension of the spherical orbit modeling meth...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1988
ISSN: 0074-1809
DOI: 10.1017/s0074180900042522