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Significance of tension for gravitating masses in Kaluza-Klein models
Significance tension gravitating masses Kaluza-Klein models
2012/2/23
In this report, we consider the six-dimensional Kaluza-Klein models with spherical compactification of the internal space. Here, we investigate the case of bare gravitating compact objects with the du...
SPIDER - V. Measuring Systematic Effects in Early-Type Galaxy Stellar Masses from Photometric SED Fitting
Measuring Systematic Effects Early-Type Galaxy Stellar Masses Photometric
2011/10/17
We present robust statistical estimates of the accuracy of early-type galaxy stellar masses derived from spectral energy distribution (SED) fitting as functions of various empirical and theoretical as...
The Demographics of Broad-Line Quasars in the Mass-Luminosity Plane. I. Testing FWHM-Based Virial Black Hole Masses
Demographics Broad-Line Quasars Mass-Luminosity Plane
2011/10/13
We jointly constrain the LF and BHMF of quasars using a Bayesian approach that describes the underlying active BHMF and Eddington ratio distribution to match the observed distributions in the quasar m...
Star Formation Rates and Stellar Masses of H-alpha Selected Star-Forming Galaxies at z=0.84: A Quantification of the Downsizing
Star Formation Rates Stellar Masses H-alpha Selected Star-Forming Galaxies Quantification Downsizing
2011/10/13
In this work we analyze the physical properties of a sample of 153 star forming galaxies at z~0.84, selected by their H-alpha flux with a NB filter. B-band luminosities of the objects are higher than ...
Study of measured pulsar masses and their possible conclusions
measured pulsar masses possible conclusions
2011/1/11
We study the statistics of 61 measured masses of neutron stars (NSs) in binary pulsar systems, including 18 double NS (DNS) systems, 26 radio pulsars (10 in our Galaxy) with white dwarf (WD) companion...
Dynamical neutrino masses in the generalized Chaplygin gas scenario with mass varying CDM
neutrino masses generalized Chaplygin gas scenario mass varying CDM
2010/11/10
Neutrinos coupled to an underlying scalar field in the scenario for unification of mass varying
dark matter and cosmon-like dark energy is examined. In the presence of a tiny component of mass varyin...
Dynamical versus Stellar Masses of Ultracompact Dwarf Galaxies in the Fornax Cluster
galaxies dwarf – galaxies elliptical and lenticular cD – galaxies evo-lution – galaxies stellar content – galaxies kinematics and dynamics
2010/11/12
The origin of ultracompact dwarf (UCD) galaxies, compact extragalactic stellar sys-tems, is still a puzzle for present galaxy formation models. We present the compre-hensive analysis of high resolutio...
WINGS-SPE II: A catalog of stellar ages and star formation histories, stellar masses and dust extinction values for local clusters galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
The WIde-field Nearby Galaxy clusters Survey (WINGS) is a project whose primary goal is to study the galaxy populations in clusters in the local universe (z<0.07) and of the influence of environment o...
The masses, and the mass discrepancy of O-type stars
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/28
The "mass discrepancy" in massive O stars represents a long-standing problem in stellar astrophysics with far-reaching implications for the chemical and dynamical feedback in galaxies.
Masses and envelope binding energies of primary stars at the onset of a common envelope
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
We present basic properties of primary stars that initiate a common envelope (CE) in a binary, while on the giant branch. We use the population-synthesis code described in Politano et al. (2010) and f...
Brown Dwarf Jets: Investigating the Universality of Jet Launching Mechanisms at the Lowest Masses
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
Recently it has become apparent that proto-stellar-like outflow activity extends to the brown dwarf (BD) mass regime. While the presence of accretion appears to be the common ingredient in all objects...
Accurate AGN black hole masses and the scatter in the M_{bh} - L_{bulge} relationship
black hole physics galaxies active galaxies bulges galaxies fundamental parameters galaxies nuclei quasars emission lines
2010/3/9
A new empirical formulae is given for estimating the masses of black holes in AGNs from the H beta velocity dispersion and the continuum luminosity at 5100 Angstroms. It is calibrated to reverberation...
Virial Masses from the Hectospec Cluster Survey (HeCS) and the Sunyaev-Zeldovich Effect
individual galaxies kinematics and dynamics cosmology
2010/3/8
We present the first comparison of a large sample of virial masses of galaxy clusters with their Sunyaev-Zel'dovich (SZE) signals. We study 15 clusters from the Hectospec Cluster Survey (HeCS) with MM...
Entropy Maximization, Cutoff Distribution, and Finite Stellar Masses
most probable distribution Finite Stellar Masses Most Probable Distribution
2009/9/4
Conventional equilibrium statistical mechanics of open gravitational systems is known to be problematical. We first recall that spherical stars/galaxies acquire unbounded radii, become infinitely mass...
How to accurately estimate BH masses of AGN with double-peaked emission lines
BH masses double-peaked emission lines AGN
2009/7/9
How to accurately estimate BH masses of AGN with double-peaked emission lines。