Science Archives Publication System

Physical parameters of helium-rich subdwarf B stars from spectral energy distributions

DOI: 10.1051/0004-6361:20031577 Bibcode: 2004A&A...413..323A

Jeffery, C. S.; Ahmad, A.

We present effective temperatures and angular radii for eleven helium-rich subdwarf B stars. These are measured using spectral energy distributions from archival IUE spectra and existing optical and infrared photometry. The data have been analysed using a grid of high-gravity helium-rich LTE model atmospheres and a χ²-minimization proce…

2004 • Astronomy and Astrophysics

IUE 10

XMM-Newton surveys of the Canada-France Redshift Survey fields - II. The X-ray catalogues, the properties of the host galaxies and the redshift distribution

DOI: 10.1111/j.1365-2966.2004.07703.x Bibcode: 2004MNRAS.350..785W

Nandra, K.; Lilly, S.; McCracken, H. J. +5 more

We present the X-ray source catalogues for the XMM surveys of the 3-h and 14-h Canada-France Redshift Survey fields (0.5-10 keV flux range ~2 × 10^-15-10^-13 erg cm^-2 s^-1). We use a subset of the XMM sources, which have Chandra positions, to determine the best method of obtaining optical identifications of…

2004 • Monthly Notices of the Royal Astronomical Society

XMM-Newton 10

Statistical behavior of foreshock Langmuir waves observed by the Cluster wideband data plasma wave receiver

DOI: 10.5194/angeo-22-2337-2004 Bibcode: 2004AnGeo..22.2337S

Balogh, A.; Lucek, E.; Gurnett, D. +3 more

Available from http://www.copernicus.org/site/EGU/annales/22/7/2337.htm?FrameEngine=false;

2004 • Annales Geophysicae

Cluster 9

Mafic silicate mapping on Mars: effects of palagonitic material, multiple mafic silicates, and spectral resolution

DOI: 10.1016/j.icarus.2004.06.002 Bibcode: 2004Icar..172..233C

Bell, James F.; Cloutis, Edward A.

The visible to near-infrared spectral reflectance properties of intimate and areal pyroxene + palagonitic material mixtures as well as pure mafic silicates (low-calcium pyroxene, high-calcium pyroxene, pigeonite, olivine) and mixtures of these minerals were analyzed at high spectral resolution (5 nm) as well as with non-contiguous band passes equi…

2004 • Icarus

eHST 9

High-resolution far ultraviolet spectrum of electron-excited SO₂

DOI: 10.1029/2003JA009828 Bibcode: 2004JGRA..109.2310V

Ajello, Joseph; Bhardwaj, Anil; Vatti Palle, Prahlad

The high-resolution UV capabilities (λ/Δλ = 10⁵) of the Hubble Space Telescope (HST) equipped with the Space Telescope Imaging Spectrograph (STIS) reflects a need for a high-resolution laboratory UV spectral data base for comparison with observation. For the purpose of interpreting the astronomical observations of Io by HST the electron…

2004 • Journal of Geophysical Research (Space Physics)

eHST 9

Estimating stellar parameters from spectra. I. Goodness-of-fit parameters and lack-of-fit test

DOI: 10.1051/0004-6361:20040127 Bibcode: 2004A&A...421..281D

Aerts, C.; Decin, L.; Molenberghs, G. +2 more

Estimating stellar parameters from spectrophotometric data is a key tool in the study of stellar structure and stellar evolution. Although many methods have been proposed to estimate stellar parameters from ultraviolet (UV), optical and infrared (IR) data using low, medium or high-resolution observational data of the target(s), only a few address …

2004 • Astronomy and Astrophysics

ISO 9

XMM-Newton observations of the Vela pulsar

DOI: 10.1016/j.asr.2003.06.017 Bibcode: 2004AdSpR..33..503M

Zane, S.; Hailey, C. J.; Mori, K. +1 more

We present spectral analysis from XMM-Newton observations of the Vela pulsar. We analyzed thermal emission from the pulsar dominating below ~1 keV since extracted spectra are heavily contaminated by nebular emission at higher energy. Featureless high-resolution spectra of the reflection grating spectrometer aboard XMM-Newton suggest the presence o…

2004 • Advances in Space Research

XMM-Newton 9

Preliminary Orbits for Eight Visual Binaries

DOI: 10.1086/422313 Bibcode: 2004ApJS..153..545L

Ling, J. F.

This paper reports orbits and masses calculated for the visual binary stars WDS 00427-6537 (I440), WDS 01084-5515 (RST 1205 AB), WDS 01343-0827 (A314), WDS 03590+0947 (HU 27), WDS 10287+4558 (A1993), WDS 12429+0516 (A1602), WDS 20157+4339 (A2095 AB), and WDS 22180-6249 (I20). All the orbits have previously been announced in IAU Commission 26 Infor…

2004 • The Astrophysical Journal Supplement Series

Hipparcos 9

Proper motions of open star clusters from Tycho-2 catalogue data

DOI: 10.1080/10556790410001654141 Bibcode: 2004A&AT...23..103B

Beshenov, G. V.; Loktin, A. V.

The results of determinating the proper motions of open clusters on the basis of the Tycho-2 catalogue data are presented here. The resulting catalogue contains mean proper motions for 390 open clusters.

2004 • Astronomical and Astrophysical Transactions

Hipparcos 9

Investigation of the source region of ionospheric oxygen outflow in the cleft/cusp using multi-spacecraft observations by CIS onboard Cluster

DOI: 10.1016/j.asr.2004.02.014 Bibcode: 2004AdSpR..34.2459B

Lundin, R.; Dandouras, I.; Klecker, B. +18 more

Beams of singly ionized oxygen with narrow energy distributions originating in the dayside cleft/cusp region are frequently observed in the cleft, cusp and polar cap regions by the CODIF sensor of the CIS instrument onboard Cluster. During summer and fall of 2001, the high separation distances of ∼1 Re between the spacecraft provided a good opport…

2004 • Advances in Space Research

Cluster 9