2.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of CambridgeGB680 papers
- Russian Academy of SciencesRU572 papers
- KU LeuvenBE531 papers
- Centre National de la Recherche ScientifiqueFR460 papers
- Max Planck Institute for AstronomyDE316 papers
- Sorbonne UniversitéFR214 papers
- European Southern ObservatoryCL203 papers
- Université Paris CitéFR200 papers
- Instituto de Astrofísica de CanariasES184 papers
- Center for Astrophysics Harvard & SmithsonianUS181 papers
- Leiden UniversityNL162 papers
- Heidelberg UniversityDE161 papers
23 papers · 1 filter
Gas Flow Structure in Binary Systems with Mass Exchange Driven by Stellar Wind
A. A. Boyarchuk, D. V. Bisikalo, E. Yu. Kilpio +1
Results of calculations of the flow structure in binary systems with mass exchange driven by stellar wind are presented. 2D simulations have been carried out using the Roe-Oscher s…
Reduction of chemical networks. I. The case of molecular clouds
D. Wiebe, D. Semenov, Th. Henning
We present a new method to analyse and reduce chemical networks and apply this technique to the chemistry in molecular clouds. Using the technique, we investigated the possibility…
The dusty type IIn Supernova 1998S
Peter Meikle, Alexandra Fassia, Thomas R. Geballe +4
The type IIn SN 1998S is one of the most remarkable core-collapse supernovae ever observed. It underwent a complex interaction with a substantial circumstellar medium, resulting in…
Hipparcos red stars in the HpV_{T2} and VI_C systems
I. Platais, D. Pourbaix, A. Jorissen +6
For Hipparcos M, S, and C spectral type stars, we provide calibrated instantaneous (epoch) Cousins color indices using newly derived photometry. Three new sets of…
Search for double degenerate progenitors of supernovae type Ia with SPY
R. Napiwotzki, N. Christlieb, H. Drechsel +13
We report on a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (SN Ia Progenitor surveY -…
Cluster cores and cooling flows
A. C. Fabian
The gas temperature in the cores of many clusters of galaxies drops inward by about a factor of three or more within the central 100 kpc radius. The radiative cooling time drops ov…
Photometry and Spectroscopy of the Type IIP SN 1999em from Outburst to Dust Formation
A. Elmhamdi, I. J. Danziger, N. Chugai +7
We present photometry and spectra of the type IIP SN1999em in NGC 1637 from several days after the outburst till day 642. An amount of of ejected Ni…
An Automated Search for Extrasolar Planet Transits
M. G. Hidas, J. K. Webb, M. C. B. Ashley +3
We are setting up a new search for transiting extrasolar planets using the 0.5m Automated Patrol Telescope at Siding Spring Observatory, Australia. We will begin regular observatio…
Freeze-out Effects in Hydrogen and Helium Lines of SN 1987A at the Early Photospheric Epoch
V. P. Utrobin, N. N. Chugai
We have developed a time-dependent model of ionization, excitation and energy balance of SN 1987A atmosphere at the photospheric epoch to study early behavior of hydrogen and heliu…
Analysing Multi-Color Observations of Young Star Clusters in Mergers
Peter Anders, Uta Fritze--v. Alvensleben, Richard de Grijs
We present a new evolutionary synthesis (ES) tool specifically developed for the analysis of multi-color data of young star clusters (YSCs) in interacting galaxies. Our ESO/ST-ECF…
The Structure of Radiative Shock Waves. IV. Effects of Electron Thermal Conduction
Yu. A. Fadeyev, H. Le Coroller, D. Gillet
We considered the structure of steady-state radiative shock waves propagating in the partially ionized hydrogen gas with density rho1 = 1e-10 gm/cm^3 and temperature 3000K <= T1 <=…
Properties of the close binary and circumbinary torus of the Red Rectangle
Alexander B. Men'shchikov, Dieter Schertl, Peter Tuthill +2
New diffraction-limited speckle images of the Red Rectangle in the wavelength range 2.1--3.3 microns with angular resolutions of 44--68 mas and previous speckle images at 0.7--2.2…
Abundance analysis of two late A-type stars HD 32115 and HD 37594
I. F. Bikmaev, T. A. Ryabchikova, H. Bruntt +6
We have performed abundance analysis of two slowly rotating, late A-type stars, HD 32115 (HR 1613) and HD 37594 (HR 1940), based on obtained echelle spectra covering the spectral r…
Photometric amplitudes and phases of nonradial oscillation in rotating stars
J. Daszynska-Daszkiewicz, W. A. Dziembowski, A. A. Pamyatnykh +1
Effects of rotational mode coupling on photometric parameters of stellar oscillations are studied. At moderate rotation rates, a strong coupling between modes of spherical harmonic…
Ionization freeze-out and barium problem in supernova 1987A
V. P. Utrobin, N. N. Chugai
We have shown that in the atmosphere of SN 1987A level populations of hydrogen are mostly controlled by an ionization freeze-out and ion-molecular processes up to 40 days. The ioni…
Pulsation of the Delta Scuti star Theta2 Tau: New multisite photometry and modelling of instability
M. Breger, A. A. Pamyatnykh, W. Zima +3
The results of a multisite photometric campaign of Theta2 Tau are reported. This binary system consists of evolved and main-sequence A stars inside the instability strip. The 12th…
On the formation of neon-enriched donor stars in ultracompact X-ray binaries
L. R. Yungelson, G. Nelemans, E. P. J. van den Heuvel
We study the formation of neon-enriched donor stars in ultracompact X-ray binaries (orbital periods P<80 min) and show that their progenitors have to be low-mass (0.3 - 0.4 solar m…
Problems with the Pulsation Mode Selection Mechanism in the Lower Instability Strip (Observations and Therory)
M. Breger, A. A. Pamyatnykh
We examine the severe disagreement between the number of predicted and observed pulsation modes for Delta Scuti stars. The selection of nonradial modes trapped in the outer envelop…
Search for progenitors of supnernovae type Ia with SPY
R. Napiwotzki, N. Christlieb, H. Drechsel +13
We have started a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor su…
Binaries discovered by the SPY project. II. HE 1414-0848: a double degenerate with a mass close to the Chandrasekhar limit
R. Napiwotzki, D. Koester, G. Nelemans +6
In the course of our search for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor surve…
Deuterium fractionation on interstellar grains studied with modified rate equations and a Monte Carlo approach
Paola Caselli, Tatiana Stantcheva, Osama Shalabiea +2
The formation of singly and doubly deuterated isotopomers of formaldehyde and of singly, doubly, and multiply deuterated isotopomers of methanol on interstellar grain surfaces has…
Discovery and analysis of p-mode and g-mode oscillations in the A-type primary of the eccentric binary HD 209295
G. Handler, L. A. Balona, R. R. Shobbrook +8
We have discovered both intermediate-order gravity mode and low-order pressure mode pulsation in the same star, HD 209295. It is therefore both a Gamma Doradus and a Delta Scuti st…
A Coupled Dynamical and Chemical Model of Starless Cores of Magnetized Molecular Clouds: I. Formulation and Initial Results
Zhi-Yun Li, V. I. Shematovich, D. S. Wiebe +1
We develop a detailed chemical model for the starless cores of strongly magnetized molecular clouds, with the ambipolar diffusion-driven dynamic evolution of the clouds coupled to…