November 1999 arXiv papers — page 27

Renee C. Kraan-Korteweg, Sebastian Juraszek

Due to the foreground extinction of the Milky Way, galaxies become increasingly faint as they approach the Galactic Equator creating a ``zone of avoidance'' (ZOA) in the distribution of optically visible galaxies of about 25%. A ``whole-sky'' map of galaxies is essential, however, for understanding the dynamics in our local Universe, in parti

Charles T. Liu

Although starburst galaxies have relatively flat spectral energy distributions, their strong optical emission lines and near-UV continua make it very feasible to estimate their redshifts photometrically. In this work, I describe a photometric technique that simultaneously (1) identifies galaxies by star formation rate and (2) measures their redshifts with an

Charles Liu, Cathy Petry, Chris Impey, Craig Foltz

We present a catalog of 30 QSOs and their spectra, in the square degree of sky centered on the northern Hubble Deep Field. These QSOs were selected by multicolor photometry and subsequently confirmed with spectroscopy. They range in magnitude from 17.6 < B < 21.0 and in redshift from 0.44 < z < 2.98. We also include in the catalog an AGN with redshift z=0.13

J. M. F. Maia, J. A. S. Lima

A bidimensional parameter space of unitary area is introduced to study phenomenologically the dynamic and thermodynamic behavior of inflationary models driven by a scalar field coupled to a thermal component. In this enlarged context the isentropic and warm pictures are just extreme cases of an infinite two-parametric family of possible inflationary scenario

Daniel Wolf Savin

We have carried out model calculations of the photoionized intergalactic medium (IGM) to determine the effects on the predicted ionic column densities due to uncertainties in the published dielectronic recombination (DR) rate coefficients. Based on our previous experimental work and a comparison of published theoretical DR rates, we estimate there is in gene

F. Munyaneza, R. D. Viollier

We study a simple model of dark matter that is gravitationally clustered around the sun in the form of a spherical halo of a degenerate gas of heavy neutrinos. It is shown that for neutrino masses $m_ν \stackrel {\textstyle <}{\sim} 16~{\rm keV}/c^{2}$, the resulting matter distribution is consistent with the constraints on the mass excesses within the orbit

Thomas W. Baumgarte, Stuart L. Shapiro, Masaru Shibata

We construct relativistic equilibrium models of differentially rotating neutron stars and show that they can support significantly more mass than their nonrotating or uniformly rotating counterparts. We dynamically evolve such ``hypermassive&#39;&#39; models in full general relativity and show that there do exist configurations which are dynamically stable a

Alberto D. Bolatto, James M. Jackson, Christine D. Wilson, Gerald Moriarty-Schieven

We present submillimeter observations of the Local Group, metal-poor, irregular dwarf galaxy IC 10, directly relevant to the interaction between interstellar medium and star formation activity in primeval galaxies. Using the JCMT, we have observed the fine structure neutral carbon transition at 492 GHz and the rotational J=3-2 transition of 12CO and 13CO in

A. Martocchia, V. Karas, G. Matt

We performed detailed calculations of the relativistic effects acting on both the reflection continuum and the iron line from accretion discs around rotating black holes. Fully relativistic transfer of both illuminating and reprocessed photons has been considered in Kerr spacetime. We calculated overall spectra, line profiles and integral quantities, and pre

Vladimir P. Reshetnikov

We found 25 galaxies with probable tidal tails in the Hubble Deep Fields North and South at z=0.5-1.5. General characteristics of the selected tidal features are very close to characteristics of tidal tails of local interacting galaxies. Using objects with z=0.5-1.0, we found that volume density of galaxies with tidal tails changes with z as (1+z)^4\pm1. The

Takashi Onaka

If aspherical dust grains are immersed in an anisotropic radiation field, their temperature depends on the cross-sections projected in the direction of the anisotropy.It was shown that the temperature difference produces polarized thermal emission even without alignment, if the observer looks at the grains from a direction different from the anisotropic radi

O. V. Verkhodanov, A. I. Kopylov, Yu. N. Parijskij, N. S. Soboleva

Using all the data available in the literature on colour characteristics of host galaxies associated with distant (z>1) radio galaxies, a possibility has been investigated of using two evolutionary models of stellar systems (PEGASE and Poggianti) to evaluate readshifts and ages of stellar systems in these galaxies. Recommendations for their applications are

Weihong Gao, Zongyun Li, Xiaoan Wu, Zhousheng Zhang

We report the photometry of a peculiar SU UMa-type dwarf nova - ER UMa for ten nights during 1998 December and 1999 March covering a complete rise to the supermaximum and a normal outburst cycle. Superhumps have been found during the rise to the superoutburst. A negative superhump appeared in Dec.22 light curve, while the superhump on the next night became p

R. Chary, E. E. Becklin, A. S. Evans, G. Neugebauer

We present high resolution imaging of the nucleus of NGC4258 from 1 micron to 18 microns. Our observations reveal that the previously discovered compact source of emission is unresolved even at the near-infrared resolution of about 0.2 arcsec FWHM which corresponds to about 7 pc at the distance of the galaxy. This is consistent with the source of emission be

I. A. Lubashevsky, V. V. Gafiychuk

In the present monograph we formulate a simple model for heat transfer in living tissue with self - regulation. The initial point of the model is the governing equations describing heat transfer in living tissue at the mesoscopic level, i.e. considering different vessels individually. Then, basing on the well known equivalence of the diffusion type process a

I. A. Lubashevsky, V. V. Gafiychuk

In the present monograph we formulate a simple model for heat transfer in living tissue with self - regulation. The initial point of the model is the governing equations describing heat transfer in living tissue at the mesoscopic level, i.e. considering different vessels individually. Then, basing on the well known equivalence of the diffusion type process a