Science Archives Publication System

The Huygens Probe System Design

DOI: 10.1023/A:1023648925732 Bibcode: 2002SSRv..104..155C

Lebreton, J. -P.; Sollazzo, C.; Couzin, P. +5 more

The Huygens Probe is the ESA-provided element of the joint NASA/ESA Cassini/Huygens mission to Saturn and its largest moon Titan. Huygens is an entry probe designed to enter Titan's atmosphere and descend under parachute down to the surface. The Probe is carried to Titan on board the Cassini Saturn Orbiter. Huygens is dormant for 7.2 years, during…

2002 • Space Science Reviews

Huygens 24

ISO observations of low and moderate albedo asteroids. PHT-P and PHT-S results

DOI: 10.1051/0004-6361:20021190 Bibcode: 2002A&A...393.1065D

Barucci, M. A.; Dotto, E.; Müller, T. G. +4 more

The ISO observations presented here are devoted to low and moderate albedo asteroids, which are supposed to be among the more primitive objects of the solar system. Spectroscopic and multi-filter photometric data of 77 Frigga, 114 Kassandra, 308 Polyxo, 511 Davida, and 914 Palisana have been obtained by the ISO instrument ISOPHOT. The subsystem PH…

2002 • Astronomy and Astrophysics

ISO 24

Temperature and Density Measurements in a Quiet Coronal Streamer

DOI: 10.1086/340069 Bibcode: 2002ApJ...571..999W

Warren, Harry P.; Warshall, Andrew D.

Many previous studies have used emission line or broadband filter ratios to infer the presence of temperature gradients in the quiet solar corona. Recently it has been suggested that these temperature gradients are not real, but result from the superposition of isothermal loops with different temperatures and density scale heights along the line o…

2002 • The Astrophysical Journal

SOHO 24

Hubble Space Telescope Imaging of the Poststarburst Quasar UN J1025-0040: Evidence for Recent Star Formation

DOI: 10.1086/341690 Bibcode: 2002PASP..114..593B

Filippenko, Alexei V.; Canalizo, Gabriela; Shanks, Tom +5 more

We present new Hubble Space Telescope (HST) Wide Field Planetary Camera images of the poststarburst quasar UN J1025-0040, which contains both an active galactic nucleus (AGN) and a 400 Myr old nuclear starburst of similar bolometric luminosity (~10^11.6 L_solar). The F450W and F814W images resolve the AGN from the starburst and…

2002 • Publications of the Astronomical Society of the Pacific

eHST 24

The Binary Central Star of the Planetary Nebula A35

DOI: 10.1086/343034 Bibcode: 2002ApJ...580..434H

Bianchi, L.; Herald, J. E.

Using new Far Ultraviolet Spectroscopic Explorer (FUSE) observations in conjunction with Space Telescope Imaging Spectrograph (STIS) and International Ultraviolet Explorer archive data, we have modeled both components of the binary central star of the planetary nebula A35. The white dwarf (the ionizing star) was modeled using the non-LTE, plane-pa…

2002 • The Astrophysical Journal

Hipparcos IUE eHST 24

The star cluster system of the NGC 7673 starburst

DOI: 10.1051/0004-6361:20020894 Bibcode: 2002A&A...391..857H

Gallagher, J. S., III; Homeier, N.; Pasquali, A.

We investigate the star cluster system in the starburst galaxy NGC 7673 using archival Hubble Space Telescope WFPC2 broad-band images. For the first time we are able to examine the internal structures of the prominent optical clumps in this galaxy. The clumps are composed of young stars, 16-33% of which are in bright star clusters. We identify 268…

2002 • Astronomy and Astrophysics

eHST 24

Hubble Space Telescope NICMOS Observations of Classical Nova Shells

DOI: 10.1086/343833 Bibcode: 2002AJ....124.2888K

Gehrz, Robert D.; Krautter, Joachim; Woodward, Charles E. +8 more

We present results of a campaign to obtain near-infrared images of evolved classical nova shells by using the Near-Infrared Camera and Multi-Image Spectrometer (NICMOS) on the Hubble Space Telescope. Images were obtained in six filters from 1.87 to 2.37 µm. Three of our four targets, QV Vulpeculae (Nova Vul 1987), QU Vulpeculae (Nova Vul 198…

2002 • The Astronomical Journal

eHST 24

Extragalactic Globular Cluster Planetary Nebulae: Discovery of a Planetary Nebula in the NGC 5128 Globular Cluster G169 Using the Magellan I Baade Telescope

DOI: 10.1086/342827 Bibcode: 2002ApJ...575L..59M

Minniti, Dante; Rejkuba, Marina

We report the discovery of a planetary nebula in the globular cluster G169 of the giant elliptical galaxy NGC 5128, based on spectroscopy with the Magellan I Baade 6.5 m telescope at Las Campanas Observatory. G169 appears to be a typical metal-rich globular cluster in NGC 5128 with M_V=-8.2. Its planetary nebula also appears to be a typi…

2002 • The Astrophysical Journal

eHST 24

Calibration of the distance scale from galactic Cepheids. I. Calibration based on the GFG sample

DOI: 10.1051/0004-6361:20011786 Bibcode: 2002A&A...383..398P

Musella, I.; Paturel, G.; Theureau, G. +3 more

New estimates of the distances of 36 nearby galaxies are presented based on accurate distances of galactic Cepheids obtained by Gieren et al. (1998) from the geometrical Barnes-Evans method. The concept of ``sosie'' is applied to extend the distance determination to extragalactic Cepheids without assuming the linearity of the PL relation. Doing so…

2002 • Astronomy and Astrophysics

eHST 24

An ISO and IUE study of planetary nebula NGC 2440

DOI: 10.1051/0004-6361:20020351 Bibcode: 2002A&A...387..301B

Pottasch, S. R.; Feibelman, W. A.; Bernard Salas, J. +1 more

The infrared and ultraviolet spectra of planetary nebula NGC 2440 are presented. The observations were made by the Infrared Space Observatory (ISO) and the International Ultraviolet Explorer (IUE). These data, in conjunction with published optical observations have been used to derive electron temperature and density. The electr…

2002 • Astronomy and Astrophysics

IUE 24