Science Archives Publication System

A Resolved Debris Disk around the G2 V Star HD 107146

DOI: 10.1086/427434 Bibcode: 2004ApJ...617L.147A

Ford, H. C.; Williams, J. P.; Illingworth, G. D. +6 more

We present resolved scattered-light images of the debris disk around HD 107146, a G2 star 28.5 pc from the Sun. This is the first debris disk to be resolved in scattered light around a solar-type star. We observed it with the Hubble Space Telescope/Advanced Camera for Surveys coronagraph, using a 1.8" occulting spot and the F606W (broad V) and F81…

2004 • The Astrophysical Journal

eHST 70

Multi-site, multi-technique survey of γ Doradus candidates. I. Spectroscopic results for 59 stars

DOI: 10.1051/0004-6361:20034503 Bibcode: 2004A&A...417..189M

Poretti, E.; Garrido, R.; Rodríguez, E. +14 more

We present the first results of a 2-year high-resolution spectroscopy campaign of 59 candidate γ Doradus stars which were mainly discovered from the HIPPARCOS astrometric mission. More than 60% of the stars present line profile variations which can be interpreted as due to pulsation related to γ Doradus stars. For all stars we also derived the pro…

2004 • Astronomy and Astrophysics

Hipparcos 70

The N Enrichment and Supernova Ejection of the Runaway Microquasar LS 5039

DOI: 10.1086/379892 Bibcode: 2004ApJ...600..927M

Kaper, L.; Gies, D. R.; Huang, W. +3 more

We present an investigation of new optical and ultraviolet spectra of the mass donor star in the massive X-ray binary LS 5039. The optical band spectral line strengths indicate that the atmosphere is N-rich and C-poor, and we classify the stellar spectrum as type ON6.5 V((f)). The N-strong and C-weak pattern is also found in the stellar wind P Cyg…

2004 • The Astrophysical Journal

IUE eHST 70

Retrievals of jovian tropospheric phosphine from Cassini/CIRS

DOI: 10.1016/j.icarus.2003.09.027 Bibcode: 2004Icar..172...37I

Irwin, P. G. J.; Calcutt, S. B.; Taylor, F. W. +4 more

On December 30th, 2000, the Cassini-Huygens spacecraft reached the perijove milestone on its continuing journey to the Saturnian System. During an extended six-month encounter, the Composite Infrared Spectrometer (CIRS) returned spectra of the jovian atmosphere, rings and satellites from 10-1400 cm ^-1 (1000-7 µm) at a programmable…

2004 • Icarus

Cassini 69

Intensity variations in EIT shutterless mode: Waves or flows?

DOI: 10.1051/0004-6361:20034252 Bibcode: 2004A&A...415.1141D

Berghmans, D.; van Driel-Gesztelyi, L.; Poedts, S. +1 more

On 11 July 2001 an EIT shutterless campaign was conducted which provided 120 high-cadence (68 s) 304 Å images of the north eastern quarter of the Sun. The most interesting feature seen in the data is an off-limb half loop structure along which systematic intensity variations are seen which appear to propagate from the top of the loop towards its f…

2004 • Astronomy and Astrophysics

SOHO 69

HST/WFPC2 morphologies and color maps of distant luminous infrared galaxies

DOI: 10.1051/0004-6361:20035784 Bibcode: 2004A&A...421..847Z

Pelat, D.; Flores, H.; Hammer, F. +2 more

Using HST/WFPC2 imaging in F606W (or F450W) and F814W filters, we obtained the color maps in observed frame for 36 distant (0.4 < z < 1.2) luminous infrared galaxies (LIRGs, L_IR(8-1000 µm) ≥ 10¹¹ L_⊙), with average star formation rates of ∼100 M_⊙ yr^-1. Stars and compact sources are …

2004 • Astronomy and Astrophysics

eHST 69

VLT spectroscopy of globular cluster systems. I. The photometric and spectroscopic data set

DOI: 10.1051/0004-6361:20031448 Bibcode: 2004A&A...415..123P

Saglia, R. P.; Thomas, D.; Bender, R. +6 more

We present Lick line-index measurements of extragalactic globular clusters in seven early-type galaxies (NGC 1380, 2434, 3115, 3379, 3585, 5846, and 7192) with different morphological types (E-S0) located in field and group/cluster environments. High-quality spectra were taken with the FORS2 instrument at ESO's Very Large Telescope. ∼50% of our da…

2004 • Astronomy and Astrophysics

eHST 69

Empirically Constrained Color-Temperature Relations. II. uvby

DOI: 10.1086/381295 Bibcode: 2004AJ....127.1227C

Grundahl, Frank; VandenBerg, Don A.; Bell, Roger A. +1 more

A new grid of theoretical color indices for the Strömgren uvby photometric system has been derived from MARCS model atmospheres and SSG synthetic spectra for cool dwarf and giant stars having -3.0<=[Fe/H]<=+0.5 and 3000<=T_eff<=8000 K. At warmer temperatures (i.e., 8000<T_eff<=40,000 K), this grid has been sup…

2004 • The Astronomical Journal

Hipparcos 69

Four-spacecraft determination of magnetopause orientation, motion and thickness: comparison with results from single-spacecraft methods

DOI: 10.5194/angeo-22-1347-2004 Bibcode: 2004AnGeo..22.1347H

Balogh, A.; Klecker, B.; Vaivads, A. +9 more

Available from http://www.copernicus.org/site/EGU/annales/22/4/1347.htm?FrameEngine=false;

2004 • Annales Geophysicae

Cluster 69

Properties of the nuclei of Centaurs Chiron and Chariklo

DOI: 10.1051/0004-6361:20031564 Bibcode: 2004A&A...413.1163G

Jorda, L.; Lamy, P.; Groussin, O.

We analyze visible, infrared, radio and spectroscopic observations of 2060 Chiron in a synthetic way to determine the physical properties of its nucleus. From visible observations performed from 1969 to 2001, we determine an absolute V magnitude for the nucleus of 7.28±0.08 with an amplitude of 0.16±0.03, implying a nearly spherical nucleus with a…

2004 • Astronomy and Astrophysics

ISO 69