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Pulkovo coordinates from astrooptical observations
Gorshkov v., Miller N., Naumov V., Prudnikova E., Shcherbakova N.
The longitude and latitude observations made with two zenith-telescopes and three photoelectric transit instruments of the Pulkovo Observatory during the 20th century were used for coordinates determination. The observations were rereduced in HIPPARCOS reference frame. All known astrometrical reductions and the new model of precession and nutation…
Special Issue: First results of the Planetary Fourier Spectrometer aboard the Mars Express mission
Sotin, Christophe; Encrenaz, Thérèse
Plasma Sheet Expansion Observed by Cluster and Geotail
Balogh, A.; Klecker, B.; Nakamura, R. +15 more
Absolute magnitudes of galactic R Coronae Borealis Stars
Milone, L. A.; Merlo, D. C.
For a long time it was generally accepted that galactic R Coronae Borealis (RCrB) stars are rather bright objects: absolute visual magnitudes ranging from -4 up to -5. On the contrary, an analysis of a sample of 15 stars of this type belonging to the Large Magellanic Cloud recently showed, that some of them are considerably fainter: absolute magni…
Type Ia Supernova Discoveries at z > 1 from the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
Dickinson, Mark; Ferguson, Henry C.; Giavalisco, Mauro +16 more
We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current epoch of cosmic acceleration. These objects, discovered during the course of the GOODS ACS Treasury program, include 6 of the 7 highest redshift SNe Ia…
Secular Evolution and the Formation of Pseudobulges in Disk Galaxies
Kormendy, John; Kennicutt, Robert C., Jr.
The Universe is in transition. At early times, galactic evolution was dominated by hierarchical clustering and merging, processes that are violent and rapid. In the far future, evolution will mostly be secular the slow rearrangement of energy and mass that results from interactions involving collective phenomena such as bars, oval disks, spiral st…
The Great Observatories Origins Deep Survey: Initial Results from Optical and Near-Infrared Imaging
Cesarsky, C.; Wolf, C.; Jogee, S. +54 more
This special issue of the Astrophysical Journal Letters is dedicated to presenting initial results from the Great Observatories Origins Deep Survey (GOODS) that are primarily, but not exclusively, based on multiband imaging data obtained with the Hubble Space Telescope and the Advanced Camera for Surveys (ACS). The survey covers roughly 320 arcmin…
The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ∼14 000 F and G dwarfs
Pont, F.; Holmberg, J.; Nordström, B. +6 more
We present and discuss new determinations of metallicity, rotation, age, kinematics, and Galactic orbits for a complete, magnitude-limited, and kinematically unbiased sample of 16 682 nearby F and G dwarf stars. Our ∼63 000 new, accurate radial-velocity observations for nearly 13 500 stars allow identification of most of the binary stars in the sa…
A Large Stellar Evolution Database for Population Synthesis Studies. I. Scaled Solar Models and Isochrones
Salaris, Maurizio; Cassisi, Santi; Pietrinferni, Adriano +1 more
We present a large and updated stellar evolution database for low-, intermediate-, and high-mass stars in a wide metallicity range, suitable for studying Galactic and extragalactic simple and composite stellar populations using population synthesis techniques. The stellar mass range is between ~0.5 and 10 Msolar with a fine mass spacing…
A catalog of white light coronal mass ejections observed by the SOHO spacecraft
St. Cyr, O. C.; Plunkett, S. P.; Howard, R. A. +4 more
The Solar and Heliospheric Observatory (SOHO) mission's white light coronagraphs have observed nearly 7000 coronal mass ejections (CMEs) between 1996 and 2002. We have documented the measured properties of all these CMEs in an online catalog. We describe this catalog and present a summary of the statistical properties of the CMEs. The primary meas…