output
19952026
most citedAstropy: A Community Python Package for Astronomy

14.6k citations

Showing 2002Show all

75 papers · 1 filter

astro-ph2002★ 11 cited

Ion-dominated plasma and the origin of jets in quasars

A. Hujeirat, M. Camenzind, M. Livio

Low cooling plasmas associated with large kinetic energies are likely to be the origin of the kpc-extended and well collimated extra-galactic jets. It is proposed that jets are lau…

astro-ph2002★ 146 cited

The Evolution of a Mass-Selected Sample of Early-Type Field Galaxies

D. Rusin, C. S. Kochanek, E. E. Falco +7

We investigate the evolution of mass-selected early-type field galaxies using a sample of 28 gravitational lenses spanning the redshift range 0 < z < 1. Based on the redshift-depen…

astro-ph2002★ 96 cited

Dark matter within high surface brightness spiral galaxies

Thilo Kranz, Adrianne Slyz, Hans-Walter Rix

We present results from a detailed dynamical analysis of five high surface brightness, late type spirals, studied with the aim to quantify the luminous-to-dark matter ratio inside…

astro-ph2002★ 263 cited

Ultradeep Near-Infrared ISAAC Observations of the HDF-S: Observations, Reduction, Multicolor Catalog, and Photometric Redshifts

I. Labbe, M. Franx, G. Rudnick +10

We present deep near-infrared (NIR) Js, H, and Ks-band ISAAC imaging of the WFPC2 field of the HDF-S. The 2.5'x 2.5' high Galactic latitude field was observed with the VLT under th…

astro-ph2002★ 824 cited

Estimating Star Formation Rates from Infrared and Radio Luminosities: The Origin of the Radio-Infrared Correlation

Eric F. Bell

I have assembled a diverse sample of galaxies from the literature with far-ultraviolet (FUV), optical, infrared (IR) and radio luminosities to explore the calibration of radio-deri…

astro-ph2002★ 28 cited

Reduction of chemical networks. I. The case of molecular clouds

D. Wiebe, D. Semenov, Th. Henning

We present a new method to analyse and reduce chemical networks and apply this technique to the chemistry in molecular clouds. Using the technique, we investigated the possibility…

astro-ph2002★ 27 cited

Small-scale structure of the galactic cirrus emission

Cs. Kiss, P. Abraham, U. Klaas +3

We examined the Fourier power spectrum characteristics of cirrus structures in 13 sky fields with faint to bright cirrus emission observed with ISOPHOT in the 90--200&#181;m wavele…

astro-ph2002★ 31 cited

Structural Evidence for Environment-Driven Transformation of the Blue Galaxies in Local Abell Clusters - A85, A496, and A754

Daniel H. McIntosh, Hans-Walter Rix, Nelson Caldwell

We compare V-band structural properties of cluster and field galaxies, to test whether much of the current cluster membership resulted from the transformation of infalling spirals…

astro-ph2002★ 54 cited

Selection of Metal-poor Giant Stars Using the Sloan Digital Sky Survey Photometric System

A. Helmi, Z. Ivezic, F. Prada +10

We present a method for photometric selection of metal-poor halo giants from the imaging data of the Sloan Digital Sky Survey (SDSS). These stars are offset from the stellar locus…

astro-ph2002★ 27 cited

Gamma photometric redshifts for long gamma-ray bursts

Z. Bagoly, I. Csabai, A. Mészáros +4

It is known that the soft tail of the gamma-ray bursts' spectra show excesses from the exact power-law dependence. In this article we show that this departure can be detected in th…

astro-ph2002★ 112 cited

Uncovering Additional Clues to Galaxy Evolution. I. Dwarf Irregulars in the Field

Henry Lee, Marshall L. McCall, Robin L. Kingsburgh +2

In order to recognize environmental effects on the evolution of dwarf galaxies in clusters of galaxies, it is first necessary to quantify the properties of objects which have evolv…

astro-ph2002★ 91 cited

The FORS Deep Field: Field selection, photometric observations and photometric catalog

J. Heidt, I. Appenzeller, A. Gabasch +21

The FORS Deep Field project is a multi-colour, multi-object spectroscopic investigation of an approx. 7 times 7 region near the south galactic pole based mostly on observations car…

astro-ph2002★ 139 cited

Local galaxy flows within 5 Mpc

I. D. Karachentsev, D. I. Makarov, M. E. Sharina +8

We present Hubble Space Telescope/WFPC2 images of sixteen dwarf galaxies as part of our snapshot survey of nearby galaxy candidates. We derive their distances from the luminosity o…

astro-ph2002★ 9 cited

A Survey for Large Separation Lensed FIRST Quasars, II. Magnification Bias and Redshift Distribution

Eran O. Ofek, Hans-Walter Rix, Dan Maoz +1

The statistics of large-separation gravitational lensing are a powerful tool to probe mass distributions on the scale of galaxy clusters. In this paper we refine the analysis of ou…

astro-ph2002★ 1.2k cited

Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way

R. Schodel, T. Ott, R. Genzel +20

Measurements of stellar velocities and variable X-ray emission near the centre of the Milky Way have provided the strongest evidence so far that the dark mass concentrations seen i…

astro-ph2002★ 127 cited

Galaxy Flow in the Canes Venatici I Cloud

I. D. Karachentsev, M. E. Sharina, A. E. Dolphin +7

We present an analysis of Hubble Space Telescope/WFPC2 images of eighteen galaxies in the Canes Venatici I cloud. We derive their distances from the luminosity of the tip of the re…

astro-ph2002★ 115 cited

CN abundance variations on the main sequence of 47 Tuc

Daniel Harbeck, Graeme H. Smith, Eva K. Grebel

We report on a deep spectroscopic survey for star-to-star CN variations along the main sequence (MS) of the globular cluster 47 Tuc with ESO's VLT. We find a significant bimodal di…

astro-ph2002★ 3 cited

Tidal dwarfs in the M81 group: the second generation?

L. N. Makarova, E. K. Grebel, I. D. Karachentsev +8

We derive quantitative star formation histories of the four suspected tidal dwarf galaxies in the M81 group, HolmbergIX, BK3N, Arp-loop (A0952+69), and Garland, using Hubble Space…

astro-ph2002★ 10 cited

A new Wolf-Rayet star in Cygnus

A. Pasquali, F. Comeron, R. Gredel +2

We report the discovery of a new Wolf-Rayet star in the direction of Cygnus. The star is strongly reddened but quite bright in the infrared, with J = 9.22, H = 8.08 and K = 7.09 (2…

astro-ph2002★ 37 cited

The Hamburg/SAO survey for low metallicity blue compact/HII-galaxies (HSS-LM). I. The first list of 46 strong-lined galaxies

A. V. Ugryumov, D. Engels, S. A. Pustilnik +3

We present the description and the first results of a new project devoted to the search for extremely metal-deficient blue compact/HII-galaxies (BCGs) and to the creation of a well…

astro-ph2002★ 18 cited

Far infrared observations of pre-protostellar sources in Lynds 183

K. Lehtinen, K. Mattila, D. Lemke +3

Using ISOPHOT maps at 100 and 200um and raster scans at 100, 120, 150 and 200um we have detected four unresolved far-infrared sources in the high latitude molecular cloud L183. Two…

astro-ph2002★ 45 cited

On Measuring the Infrared Luminosity of Distant Galaxies with the Space Infrared Telescope Facility

Casey Papovich, Eric F. Bell

The Space Infrared Telescope Facility (SIRTF) will revolutionize the study of dust-obscured star formation in distant galaxies. Although deep images from the Multiband Imaging Phot…

astro-ph2002★ 100 cited

The Hawaii-AAO K-band Galaxy Redshift Survey -- Paper I: The Local K-band Luminosity Function

J. -S. Huang, K. Glazebrook, L. L. Cowie +1

We present the K-band local luminosity function derived froma sample of 1056 bright (K<15) K-selected galaxies from the Hawaii-AAO K-band redshift survey. The Hawaii-AAO K-band red…

astro-ph2002★ 84 cited

A Chandra study of X-ray sources in the field of the z=2.16 radio galaxy MRC 1138-262

L. Pentericci, J. D. Kurk, C. L. Carilli +3

We present results from a Chandra X-ray Observatory study of the field X-ray source population in the vicinity of the radio galaxy MRC 1138-262. Many serendipitous X-ray sources ar…