Science Archives Publication System

The Need for Ultraviolet to Understand the Chemical Evolution of the Universe and Cosmology.

DOI: 10.1007/s10509-005-9012-9 Bibcode: 2006Ap&SS.303...69W

Fabian, Andrew C.; Petitjean, Patrick; Fransson, Claes +8 more

We identify an important set of key areas where an advanced observational Ultraviolet capability would have major impact on studies of cosmology and Galaxy formation in the young Universe. Most of these are associated with the Universe at z < 3–4. We address the issues associated with Dark matter evidence in the local Universe and the impact of…

2006 • Astrophysics and Space Science

IUE 6

Simultaneous ground-based and satellite observations of Pc5 geomagnetic pulsations: A case study using multipoint measurements

DOI: 10.1186/BF03351992 Bibcode: 2006EP&S...58..873S

Balogh, A.; Sung, S. -K.; Kim, K. -H. +5 more

Pc5 pulsations with a latitude-independent frequency of ∼2.8 mHz (period ∼6 min) were observed with ground-based magnetometers in the morning sector (0700–1000 local time) from 0730 to 0810 UT, April 29, 2001. The pulsations exhibited an amplitude peak and a ∼180° phase change at ∼67° geomagnetic latitude. A vortex structure of the equivalent iono…

2006 • Earth, Planets and Space

Cluster 6

Effective Length of a Receiving Antenna in a Streaming Plasma

DOI: 10.1109/TAP.2006.882162 Bibcode: 2006ITAP...54.2750C

Fiala, V.; Chugunov, Y. V.

2006 • IEEE Transactions on Antennas and Propagation

Cluster 6

A deep XMM-Newton serendipitous survey of a middle-latitude area

DOI: 10.1051/0004-6361:20053476 Bibcode: 2006A&A...448...93N

Caraveo, P. A.; Bignami, G. F.; de Luca, A. +4 more

The radio-quiet neutron star 1E1207.4-5209 was the target of a 260 ks XMM-Newton observation, that yielded, as a by product, a harvest of about 200 serendipitous X-ray sources above a limiting flux of 2 × 10^-15 erg cm^-2 s^-1 in the 0.3-8 keV energy range. In view of the intermediate latitude of our field (b≃ 10°), i…

2006 • Astronomy and Astrophysics

XMM-Newton 6

Velocity Space of Galactic O-B Stars

DOI: 10.1088/1009-9271/6/3/12 Bibcode: 2006ChJAA...6..363Z

Zhu, Zi

Based on the Hipparcos proper motions and available radial velocity data of O-B stars, we have re-examined the local kinematical structure of the young disk population of ~1500 O-B stars not including the Gould-belt stars. A systematic warping motion of the stars about the direction to the Galactic center has been reconfirmed. A negative K-term im…

2006 • Chinese Journal of Astronomy and Astrophysics

Hipparcos 6

Swift, RXTE, and INTEGRAL observation of Swift J1922.7-1716

DOI: 10.1051/0004-6361:20065456 Bibcode: 2006A&A...456L...5F

Campana, S.; Belloni, T.; Falanga, M.

We report the results of analyzing Swift, RossiXTE, and INTEGRAL data of Swift J1922.7-1716, a likely transient X-ray source discovered by Swift/BAT. Both the fast variability measured by the RXTE/PCA and the combined Swift/XRT, RXTE/PCA, and INTEGRAL/ISGRI (0.5-100 keV) energy spectrum suggest that the system is a neutron-star low-mass X-ray bina…

2006 • Astronomy and Astrophysics

INTEGRAL 6

On measuring the Tully-Fisher relation at z > 1. A case study using strong Hα emitting galaxies at z > 1.5

DOI: 10.1051/0004-6361:20053733 Bibcode: 2006A&A...450...25V

Yan, L.; van der Werf, P. P.; Moorwood, A. F. M. +1 more

The evolution of the line width - luminosity relation for spiral galaxies, the Tully-Fisher relation, strongly constrains galaxy formation and evolution models. At this moment, the kinematics of z>1 spiral galaxies can only be measured using rest frame optical emission lines associated with star formation, such as Hα and [O III]5007/4959 and [O…

2006 • Astronomy and Astrophysics

eHST 6

Calibration of TRACE Lyman-α images using SOHO/SUMER observations

DOI: 10.1051/0004-6361:20054714 Bibcode: 2006A&A...456..747K

Kim, Sungsoo S.; Roh, Hee-Seon; Cho, Kyung-Seok +1 more

1216 Å channel images from the Transition Region and Coronal Explorer (TRACE) contain not only the desired HI Lyman-α (Lα) line emission from the Sun, but also some UV continuum around 1600 Å. By comparing TRACE data with Lα images from the Very High Angular Resolution Ultraviolet Telescope, Handy et al. proposed a simple procedure to remove the c…

2006 • Astronomy and Astrophysics

SOHO 6

On the interstellar extinction law toward young stars

DOI: 10.1134/S1063773706030054 Bibcode: 2006AstL...32..176L

Lamzin, S. A.

We have determined the atomic hydrogen column density N HI toward all of the young stars from the Taurus-Auriga-Perseus star-forming complex for which the corresponding spectra are available in the Hubble Space Telescope archive (nine stars) by analyzing the Lyα line profile. We show that the stars studied, except DR Tau, lie not far from the edge…

2006 • Astronomy Letters

eHST 6

High resolution spectroscopy of giant HII regions around young massive clusters

DOI: 10.1051/0004-6361:20053899 Bibcode: 2006A&A...459..769V

Maiolino, R.; Vanzi, L.; Scatarzi, A. +1 more

We present new high-resolution optical spectroscopy of giant HII regions around three young

massive clusters located in the blue dwarf galaxies NGC 5253 and He 2-10.

We used the observations to derive the mass of the clusters under the hypothesis of virialization. The virial masses exceed the optical ones. In one case, however, the viria…

2006 • Astronomy and Astrophysics

eHST 6