Science Archives Publication System

Cassini Imaging Science: Instrument Characteristics And Anticipated Scientific Investigations At Saturn

DOI: 10.1007/s11214-004-1456-7 Bibcode: 2004SSRv..115..363P

Dones, Luke; West, Robert A.; Porco, Carolyn C. +17 more

The Cassini Imaging Science Subsystem (ISS) is the highest-resolution two-dimensional imaging device on the Cassini Orbiter and has been designed for investigations of the bodies and phenomena found within the Saturnian planetary system. It consists of two framing cameras: a narrow angle, reflecting telescope with a 2-m focal length and a square f…

2004 • Space Science Reviews

Cassini 316

The VIMOS VLT Deep Survey. Public release of 1599 redshifts to I_AB≤24 across the Chandra Deep Field South

DOI: 10.1051/0004-6361:20048072 Bibcode: 2004A&A...428.1043L

Bondi, M.; Maccagni, D.; Ilbert, O. +47 more

This paper presents the VIMOS VLT Deep Survey around the Chandra Deep Field South (CDFS). We have measured 1599 new redshifts with VIMOS on the European Observatory Very Large Telescope - UT3, in an area 21 × 21.6 arcmin², including 784 redshifts in the Hubble Space Telescope - Advanced Camera for Surveys GOODS area. 30% of all objects …

2004 • Astronomy and Astrophysics

eHST 312

A Deep Wide-Field, Optical, and Near-Infrared Catalog of a Large Area around the Hubble Deep Field North

DOI: 10.1086/380611 Bibcode: 2004AJ....127..180C

Stern, D.; Dickinson, M.; Giavalisco, M. +10 more

We have conducted a deep multicolor imaging survey of 0.2 deg² centered on the Hubble Deep Field North (HDF-N). We shall refer to this region as the Hawaii HDF-N. Deep data were collected in U, B, V, R, I, and z' bands over the central 0.2 deg² and in HK' over a smaller region covering the Chandra Deep Field North. The data w…

2004 • The Astronomical Journal

eHST 302

On the three-dimensional configuration of coronal mass ejections

DOI: 10.1051/0004-6361:20035776 Bibcode: 2004A&A...422..307C

Bothmer, V.; Cremades, H.

Coronal mass ejections (CMEs) are a direct consequence of the dynamic nature of the solar atmosphere. They represent fundamental processes in which energy is transferred from the Sun into interplanetary space, including geospace. Their origin, 3D structure and internal magnetic field configuration are to date not well understood. The SOHO spacecra…

2004 • Astronomy and Astrophysics

SOHO 296

UV star-formation rates of GRB host galaxies

DOI: 10.1051/0004-6361:20040361 Bibcode: 2004A&A...425..913C

Christensen, L.; Gorosabel, J.; Hjorth, J.

We study a magnitude-limited sample of 10 gamma-ray burst (GRB) host galaxies with known spectroscopic redshifts (0.43 < z < 2.04). From an analysis of the spectral energy distributions (SEDs), based on published broad-band optical and near-infrared photometry, we derive photometric redshifts, galaxy types, ages of the dominant stellar popul…

2004 • Astronomy and Astrophysics

eHST 289

Photoionization Modeling and the K Lines of Iron

DOI: 10.1086/424039 Bibcode: 2004ApJS..155..675K

Kallman, T. R.; Krolik, J. H.; Bautista, M. A. +2 more

We calculate the efficiency of iron K line emission and iron K absorption in photoionized models using a new set of atomic data. These data are more comprehensive than those previously applied to the modeling of iron K lines from photoionized gases and allow us to systematically examine the behavior of the properties of line emission and absorptio…

2004 • The Astrophysical Journal Supplement Series

XMM-Newton 289

Detection of a Neptune-Mass Planet in the ρ¹ Cancri System Using the Hobby-Eberly Telescope

DOI: 10.1086/425561 Bibcode: 2004ApJ...614L..81M

Butler, R. Paul; Cochran, William D.; Endl, Michael +9 more

We report the detection of the lowest mass extrasolar planet yet found around a Sun-like star-a planet with an Msini of only 14.21+/-2.91 M_⊕ in an extremely short period orbit (P=2.808 days) around ρ¹ Cancri, a planetary system that already has three known planets. Velocities taken from late 2003-2004 at McDonald Observatory …

2004 • The Astrophysical Journal

eHST 288

The Fall of Active Galactic Nuclei and the Rise of Star-forming Galaxies: A Close Look at the Chandra Deep Field X-Ray Number Counts

DOI: 10.1086/424859 Bibcode: 2004AJ....128.2048B

Hornschemeier, A. E.; Alexander, D. M.; Treister, E. +4 more

We investigate the X-ray number counts in the 1-2 Ms Chandra Deep Fields (CDFs) to determine the contributions of faint X-ray source populations to the extragalactic X-ray background (XRB). X-ray sources were separated into active galactic nuclei (AGNs), star-forming galaxies, and Galactic stars primarily on the basis of their X-ray-to-optical flu…

2004 • The Astronomical Journal

eHST 287

The relation between AGN hard X-ray emission and mid-infrared continuum from ISO spectra: Scatter and unification aspects

DOI: 10.1051/0004-6361:20035838 Bibcode: 2004A&A...418..465L

Lutz, D.; Maiolino, R.; Moorwood, A. F. M. +1 more

We use mid-infrared spectral decomposition to separate the 6 µm mid-infrared AGN continuum from the host emission in the ISO low resolution spectra of 71 active galaxies and compare the results to observed and intrinsic 2-10 keV hard X-ray fluxes from the literature. We find a correlation between mid-infrared luminosity and absorption correc…

2004 • Astronomy and Astrophysics

ISO 287

The massive binary companion star to the progenitor of supernova 1993J

DOI: 10.1038/nature02161 Bibcode: 2004Natur.427..129M

Smartt, Stephen J.; Kudritzki, Rolf P.; Podsiadlowski, Philipp +2 more

The massive star that underwent a collapse of its core to produce supernova (SN)1993J was subsequently identified as a non-variable red supergiant star in images of the galaxy M81 taken before explosion. It showed an excess in ultraviolet and B-band colours, suggesting either the presence of a hot, massive companion star or that it was embedded in…

2004 • Nature

eHST 286