14.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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29 papers · 1 filter
Did Most High-Redshift Quasars Escape Detection?
C. Wolf, K. Meisenheimer, H. -J. Roeser +1
We present follow-up spectroscopy to the Calar Alto Deep Imaging Survey (CADIS), reporting on the quasars in the CADIS 16h-field, and including preliminary data from two other fiel…
Dissipative Process as a Mechanism of Differentiating Internal Structures between Dwarf and Normal Elliptical Galaxies in a CDM Universe
Masao Mori, Yuzuru Yoshii, Ken'ichi Nomoto
We simulate the dynamical, chemical, and spectro-photometric evolution of dwarf and normal elliptical galaxies embedded in a dark matter halo, using a three-dimensional N-body/SPH…
Supernova Remnant in a Stratified Medium: Explicit, Analytical Approximations for Adiabatic Expansion and Radiative Cooling
Witold Maciejewski, Donald P. Cox
We propose simple, explicit, analytical approximations for the kinematics of an adiabatic blast wave propagating in an exponentially stratified ambient medium, and for the onset of…
Bars within Bars in Galaxies
Witold Maciejewski, Linda S. Sparke
Inner regions of barred disk galaxies often include asymmetrical, small-scale central features, some of which are best described as secondary bars. Because orbital timescales in th…
Isophot Observations of Comet Hale-Bopp: Initial Data Reduction
E. Grün, S. B. Peschke, M. Stickel +17
Comet Hale-Bopp was observed five times with ISOPHOT, the photometer on board the Infrared Space Observatory (ISO). Each time broadband photometry was performed using 4 different d…
The optical/IR counterpart of the 3 July 1998 gamma-ray burst and its evolution
A. J. Castro-Tirado, M. R. Zapatero-Osorio, J. Gorosabel +21
We imaged the X-ray error box of GRB 980703, beginning 22.5 hours after the gamma--ray event, in both the optical R and near-infrared H bands. A fading optical/IR object was detect…
The Interaction of the Disk with the Halo
Mordecai-Mark Mac Low
In this review I focus on how massive stars in the disks of galaxies determine the properties of the ionized, gaseous haloes of star-forming galaxies. I first examine the ionizatio…
On Measuring Chemical Abundances in Distant Galaxies Using Global Emission Line Spectra
Henry A. Kobulnicky, Robert C. Kennicutt, James L. Pizagno
The advent of 8--10 meter class telescopes enables direct measurement of the chemical properties in the ionized gas of cosmologically--distant galaxies with the same nebular analys…
Collapse of a Molecular Cloud Core to Stellar Densities: The First Three-Dimensional Calculations
Matthew R. Bate
We present results from the first three-dimensional calculations ever to follow the collapse of a molecular cloud core (~ 10^{-18} g cm^{-3}) to stellar densities (> 0.01 g cm^{-3}…
The Energy Dissipation Rate of Supersonic, Magnetohydrodynamic Turbulence in Molecular Clouds
Mordecai-Mark Mac Low
Molecular clouds have broad linewidths suggesting turbulent supersonic motions in the clouds. These motions are usually invoked to explain why molecular clouds take much longer tha…
Wolf-Rayet and LBV Nebulae as the Result of Variable and Non-Spherical Stellar Winds
Mordecai-Mark Mac Low
The physical basis for interpreting observations of nebular morphology around massive stars in terms of the evolution of the central stars is reviewed, and examples are discussed,…
Monte Carlo simulations of the disk white dwarf population
E. Garcia-Berro, S. Torres, J. Isern +1
In order to understand the dynamical and chemical evolution of our Galaxy it is of fundamental importance to study the local neighborhood. White dwarf stars are ideal candidates to…
Far-infrared polarisation of the quasar 3C 279
Ulrich Klaas, Rene J. Laureijs, Jean Clavel
We present the first FIR polarisation results of the OVV quasar 3C 279 obtained with ISOPHOT for two epochs in 1996 and 1997. We describe its integral polarisation properties at a…
The Angular Correlation Function of K=19.5 Galaxies and the Detection of a Cluster at z=0.775
Nathan Roche, Steve Eales, Hans Hippelein +1
On five K-band Omega camera images, covering a total of 162.2 sq. arcmin to K=19.5, we investigate (i) the clustering environment of 5 radio galaxies at 0.7<z<0.8 and (ii) the gala…
Planet Consumption and Stellar Metallicity Enhancements
Eric Sandquist, Ronald E. Taam, D. N. C. Lin +1
The evolution of a giant planet within the stellar envelope of a main-sequence star is investigated as a possible mechanism for enhancing the stellar metallicities of the parent st…
ALFA: First Operational Experience of the MPE/MPIA Laser Guide Star System for Adaptive Optics
R. I. Davies, W. Hackenberg, T. Ott +5
The sodium laser guide star adaptive optics system ALFA has been constructed at the Calar Alto 3.5-m telescope. Following the first detection of the laser beacon on the wavefront s…
Modeling W44 as a Supernova Remnant in a Density Gradient, with a Partially Formed Dense Shell and Thermal Conduction in the Hot Interior
R. L. Shelton, Donald P. Cox, Witold Maciejewski +4
(shortened version) We show that many observations of W44, a supernova remnant in the galactic plane at a distance of about 2500 pc, are remarkably consistent with the simplest rea…
The Marseille Schmidt survey for active star-forming galaxies. I. Data on 92 emission line objects in two fields
C. Surace, G. Comte
We present data from a moderately deep spectroscopic Schmidt survey (Blim=17.5) of ``active galaxies'' selected by the presence of emission lines in their spectra and/or their UV e…
A Deep VLA survey at 20cm of the ISO ELAIS survey regions
P. Ciliegi, R. G. McMahon, G. Miley +11
We have used the Very Large Array(VLA) in C configuration to carry out a sensitive 20cm radio survey of regions of sky that have been surveyed in the Far Infra-Red over the wavelen…
Fragmentation of Molecular Clouds: The Initial Phase of a Stellar Cluster
Ralf S. Klessen, Andreas Burkert, Matthew R. Bate
The isothermal gravitational collapse and fragmentation of a region within a molecular cloud and the subsequent formation of a protostellar cluster is investigated numerically. The…
Infrared emission-line galaxies associated with damped Lyman-alpha and strong metal absorber redshifts
F. Mannucci, D. Thompson, S. V. W. Beckwith +1
Eighteen candidates for emission line galaxies were discovered in a narrow-band infrared survey that targeted the redshifts of damped Lyman-alpha or metal lines in the spectra of q…
An Infrared Emission Line Galaxy at z = 2.43
S. V. W. Beckwith, D. Thompson, F. Mannucci +1
An object discovered during an infrared survey of the field near the quasar B2 0149+33 has an emission line at 2.25m that we interpret as H at a redshift of 2.43. The K-band…
Interpreting the Mean Surface Density of Companions in Star-Forming Regions
Matthew R. Bate, Cathie J. Clarke, Mark J. McCaughrean
We study the interpretation of the mean surface density of stellar companions as a function of separation (or the two point correlation function of stars) in star-forming regions.…
Star formation environments and the distribution of binary separations
Wolfgang Brandner, Rainer Koehler
We have carried out K-band speckle observations of a sample of 114 X-ray selected weak-line T Tauri stars in the nearby Scorpius-Centaurus OB association. We find that for binary T…