Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Max Planck SocietyDE1.2k papers
- Centre National de la Recherche ScientifiqueFR1k papers
- National Institute for AstrophysicsIT820 papers
- European Southern ObservatoryCL784 papers
- Center for Astrophysics Harvard & SmithsonianUS755 papers
- Max Planck Institute for Extraterrestrial PhysicsDE722 papers
- Ludwig-Maximilians-Universität MünchenDE639 papers
- Space Research InstituteRU602 papers
- Osservatorio Astronomico di PadovaIT600 papers
- California Institute of TechnologyUS581 papers
- Trieste Astronomical ObservatoryIT566 papers
- University of California, BerkeleyUS566 papers
111 papers · 1 filter
Tidal disruption rates of stars in observed galaxies
D. Syer, A. Ulmer
We derive the rates of capture, Ndot, of main sequence turn off stars by the central massive black hole in a sample of galaxies from Magorrian et al. 1998. The disruption rates are…
Dynamics of pairwise motions
Roman Juszkiewicz, Volker Springel, Ruth Durrer
We derive a simple closed-form expression, relating $\vs(r)$ -- the mean relative velocity of pairs of galaxies at fixed separation -- to the two-point correlation function of…
Near IR photometry of the old open clusters Berkeley 17 and Berkeley 18. Probing the age of the galactic disc
Giovanni Carraro, Antonella Vallenari, Leo Girardi +1
We report on near IR ( and bands) observations of two regions centered on the old open clusters Berkeley~17 and Berkeley~18, for which only optic…
ESO Imaging Survey. AXAF Field: Deep Optical-Infrared Observations, Data Reduction and Photometry
R. Rengelink, M. Nonino, L. da Costa +11
This paper presents ground-based data obtained from deep optical and infrared observations carried out at the ESO 3.5 New Technology Telescope (NTT) of a field selected for its low…
Restrictions on the parameters of boundary layer and accretion disk of X-ray bursters in the low state
M. Revnivtsev, M. Gilfanov, E. Churazov +1
Using ASCA observations of several X-ray bursters in the low spectral state Lx~1-5x10^{36} erg/s) restrictions on the parameters of the accretion disk and the boundary layer were o…
Photon Conserving Radiative Transfer around Point Sources in multi-dimensional Numerical Cosmology
Tom Abel, Michael L. Norman, Piero Madau
Many questions in physical cosmology regarding the thermal and ionization history of the intergalactic medium are now successfully studied with the help of cosmological hydrodynami…
Redshifts of New Galaxies
Halton Arp
Observations increasingly demonstrate the spatial association of high redshift objects with larger, low redshift galaxies. These companion objects show a continuous range of physic…
The absolute magnitude of K0V stars from HIPPARCOS parallaxes
R. D. Oudmaijer, M. A. T. Groenewegen, H. Schrijver
We investigate the properties of K0V stars with Hipparcos parallaxes and spectral types taken from the Michigan Spectral Survey. The sample of 200 objects allows the empirical inve…
Cygnus X-2, super-Eddington mass transfer, and pulsar binaries
A. R. King, H. Ritter
We consider the unusual evolutionary state of the secondary star in Cygnus X-2. Spectroscopic data give a low mass ($M_2 \simeq 0.5 - 0.7\msun$) and yet a large radius ($R_2 \simeq…
Reionization of the Inhomogeneous Universe
Jordi Miralda-Escude, Martin Haehnelt, Martin J. Rees
A model of the density distribution in the intergalactic medium, motivated by that found in numerical simulations, is used to demonstrate the effect of a clumpy IGM and discrete so…
Identification of absorbing galaxies towards the QSO J2233-606 in the Hubble Deep Field South
L. Tresse, M. Dennefeld, P. Petitjean +2
We present spectroscopic observations of galaxies lying within 1' from the QSO J2233-606 in the HDF-S. Several are found to be coincident in redshift with absorption line systems s…
Nuclear Astrophysics
M. Arnould, K. Takahashi
Nuclear astrophysics is that branch of astrophysics which helps understanding some of the many facets of the Universe through the knowledge of the microcosm of the atomic nucleus.…
Clustering of Galaxies in a Hierarchical Universe: III. Mock Redshift Surveys
Antonaldo Diaferio, Guinevere Kauffmann, Joerg M. Colberg +1
This is the third paper in a series which combines N-body simulations and semi-analytic modelling to provide a fully spatially resolved simulation of the galaxy formation and clust…
The Sachs-Wolfe Effect: Gauge Independence and a General Expression
J. Hwang, H. Noh
In this paper we address two points concerning the Sachs-Wolfe effect: (i) the gauge independence of the observable temperature anisotropy, and (ii) a gauge-invariant expression of…
1996/1997 low luminosity state and state transitions of GRS1915+105: RXTE observations
S. Trudolyubov, E. Churazov, M. Gilfanov
The results of X-ray observations of Galactic superluminal jet source GRS 1915+105 during its low luminosity state and state transitions in October, 1996 - April, 1997 with PCA and…
Galactic Globular Cluster Stars: from Theory to Observation
S. Cassisi, V. Castellani, S. Degl'Innocenti +2
We use evolutionary calculations presented in a recent paper (Cassisi et al. 1998) to predict B,V,I magnitudes for stars in galactic globulars. The effect of the adopted mixing len…
A QSO 2.4 arcsec from a dwarf galaxy - the rest of the story
Halton Arp
D. Reimers and H.-J. Hagen report in A&A 329, L25 (1998) that a QSO of z = .807 is a "by chance projection" on the center of a galaxy of z = .009. A considerable amount of previous…
Ultraluminous IRAS galaxy 10026+4347
X. -Y. Xia, Shude Mao, H. Wu +4
We study optical and X-ray properties of the ultraluminous IRAS galaxy 10026+4347. This galaxy is a narrow-line QSO with very strong FeII emission. Three optical spectra were taken…
Carbon stars in populations of different metallicity
M. A. T. Groenewegen
Our current knowledge of carbon stars in the Local Group and beyond, is discussed. Although many carbon stars and late M-stars have been identified in external galaxies a coherent…
Direct Signature of Evolving Gravitational Potential from Cosmic Microwave Background
Uros Seljak, Matias Zaldarriaga
We show that time dependent gravitational potential can be directly detected from the cosmic microwave background (CMB) anisotropies. The signature can be measured by cross-correla…
Building up the Stellar Halo of the Milky Way
Amina Helmi, Simon D. M. White
We study numerical simulations of satellite galaxy disruption in a potential resembling that of the Milky Way. Our goal is to assess whether a merger origin for the stellar halo wo…
The Disc Accretion in Gravitational Field of a Rapidly Rotating Neutron Star with a Rotationally Induced Quadrupole Mass Distribution
N. R. Sibgatullin, R. A. Sunyaev
We analyze the effect of the quadrupole component in the mass distribution of a rapidly rotating neutron star on energy release in the boundary layer on the surface of the accretin…
Gamma-ray bursts from X-ray binaries
H. C. Spruit
A weakly magnetized (G) neutron star, slowly spun up by accretion in an X-ray binary, crosses the instability boundary for r-mode instability at P=1--2 msec. The amplitu…
Cosmological perturbations in a gravity with quadratic order curvature couplings
H. Noh, J. Hwang
We present a set of equations describing the evolution of the scalar-type cosmological perturbation in a gravity with general quadratic order curvature coupling terms. Equations ar…