19.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR3.5k papers
- National Institute for AstrophysicsIT1.8k papers
- Max Planck Institute for AstronomyDE1.8k papers
- Max Planck Institute for Extraterrestrial PhysicsDE1.5k papers
- California Institute of TechnologyUS1.5k papers
- Space Telescope Science InstituteUS1.5k papers
- Leiden UniversityNL1.4k papers
- Center for Astrophysics Harvard & SmithsonianUS1.3k papers
- Osservatorio Astronomico di PadovaIT1.3k papers
- University of CambridgeGB1.2k papers
- Observatoire de ParisFR1.2k papers
- Instituto de Astrofísica de CanariasES1.2k papers
52 papers · 1 filter
Supernova Remnants Associated with Molecular Clouds in the Large Magellanic Cloud
Kenneth R. Banas, John P. Hughes, L. Bronfman +1
We used the Swedish-ESO Submillimeter Telescope (SEST) to search for CO emission associated with three supernova remnants (SNRs) in the Large Magellanic Cloud: N49, N132D, and N23.…
The Tully-Fisher Relation and H_not
R. Giovanelli, M. Haynes, L. da Costa +3
The use of the Tully-Fisher (TF) relation for the determination of the Hubble Constant relies on the availability of an adequate template TF relation and of reliable primary distan…
Optical/Near-Infrared Observations of GRO J1744-28
D. M. Cole, D. E. Vanden Berk, S. A. Severson +8
We present results from a series of optical (g and r-band) and near-infrared (K'-band) observations of the region of the sky including the entire XTE and ROSAT error circles for th…
Discovery of a bow shock around Vela X-1
Lex Kaper, Jacco van Loon, Thomas Augusteijn +4
We report the discovery of a symmetric bow shock around the well-known high-mass X-ray binary (HMXB) Vela X-1. Wind bow shocks are a ubiquitous phenomenon around OB-runaway stars,…
A Test of the Lauer--Postman Bulk Flow
Riccardo Giovanelli, Martha P. Haynes, Gary Wegner +3
We use Tully--Fisher distances for a sample of field late spiral galaxies to test the Lauer and Postman (1994; hereinafter LP) result suggestive of a bulk flow with respect to the…
Internal Dynamics of Globular Clusters
G. Meylan, D. C. Heggie
Galactic globular clusters, which are ancient building blocks of our Galaxy, represent a very interesting family of stellar systems in which some fundamental dynamical processes ha…
RR Lyrae Stars in the MACHO Database
The MACHO Collaboration, D. Minniti, C. Alcock +18
The MACHO Project has catalogued RR Lyrae stars in the Large Magellanic Cloud, in the Galactic bulge, and 50 in the Sgr dwarf galaxy. These variables…
The evolution of ultraviolet emission lines from the circumstellar material surrounding SN 1987A
G. Sonneborn, C. Fransson, P. Lundqvist +5
The presence of narrow high-temperature emission lines from nitrogen-rich gas close to SN 1987A has been the principal observational constraint on the evolu- tionary status of the…
The dichotomy of early-type galaxies from their globular cluster systems
Markus Kissler-Patig
Growing evidence for the existence of two classes of ellipticals calls for a comparison of the properties of their globular cluster systems. I compiled information on the propertie…
A Study of the Large-Scale Distribution of Galaxies in the South Galactic Pole Region: II. Further Evidence for a Preferential Clustering Scale?
S. Ettori, L. Guzzo, M. Tarenghi
We analyse a set of new pencil-beam galaxy redshift data in three small regions around the South Galactic Pole (SGP) area. We investigate whether we can find any evidence of the qu…
The clustering properties of the Lyman-alpha clouds
S. Cristiani, S. D'Odorico, V. D'Odorico +3
We analyze the clustering properties of a high-resolution (~10 km/s) sample of about 1600 Lyman-alpha lines in the spectra of 15 quasars, obtained in the framework of an ESO key-pr…
Comparison of stars and decaying neutrinos as additional sources of Intergalactic UV background
L. Masperi, S. Savaglio
A numerical calculation of properties of finite absorbers and of intergalactic medium based on photoionization equilibrium is performed to confront alternative UV sources in additi…
The Iron Discrepancy in Elliptical Galaxies after ASCA
Nobuo Arimoto, Kyoko Matsushita, Yuhri Ishimaru +2
We present estimates for the iron content of the stellar and diffused components of elliptical galaxies, as derived respectively from integrated optical spectra and from ASCA X-ray…
The Sunyaev-Zeldovich Effect at 1 and 2 mm towards ROSAT Clusters
P. Andreani, G. Dall'Oglio, L. Pizzo +7
An observing campaign was devoted to the search for the Sunyaev-Zeldovich (S-Z) effect towards X-ray ROSAT Clusters in the millimetric spectral domain. A double channel (1.2 and 2…
The Rise Times and Bolometric Light Curve of SN 1994D: Constraints on Models of Type Ia Supernovae
William D. Vacca, Bruno Leibundgut
Using the published photometry and an empirical model of the temporal evolution of the apparent magnitudes in the UBVRI passbands, we have constructed a continuous optical bolometr…
Operational Concepts of Large Telescopes
B. Leibundgut
The singular way of scheduling at major observatories has favored certain types of astronomy. This has led to the discrimination of certain types of observations which could not be…
Distant Supernovae and Cosmic Deceleration
B. Leibundgut, J. Spyromilio
Distant supernovae can now be detected routinely. To date 34 supernovae at have been discovered. Among them are 12 Type~Ia supernovae confirmed spectroscopically and suit…
ROSAT HRI observations of Centaurus A
S. Doebereiner, N. Junkes, S. J. Wagner +4
We present results from a sensitive high-resolution X-ray observation of the nearby active galaxy Centaurus A (NGC 5128) with the ROSAT HRI. The 65~ksec X-ray image clearly disting…
The Gaseous Environments of Radio Galaxies in the Early Universe: Kinematics of the Lyman Emission
R. van Ojik, H. J. A. Röttgering, G. K. Miley +1
We present intermediate resolution ( Å) spectra of the Ly emission from 15 high redshift radio galaxies (). Together with previously published spectra we analyze dat…
Globular cluster systems of early--type galaxies in Fornax
M. Kissler-Patig, S. Kohle, M. Hilker +3
We studied the properties of the globular cluster systems of five early--type galaxies in the Fornax galaxy cluster: NGC 1374, NGC 1379, NGC 1387, NGC 1427, and the central giant e…
The MACHO Project LMC Variable Star Inventory IV: Multimode RR Lyrae Stars, Distance to the LMC and Age of the Oldest Stars
C. Alcock, R. A. Allsman, D. Alves +16
We report the discovery of 73 double-mode RR Lyrae (RRd) stars in fields near the bar of the LMC. The stars are detected among the MACHO database of short-period variables that cur…
The absence of diffuse gas around the dwarf spheroidal galaxy Leo I
David V. Bowen, Eline Tolstoy, Andrea Ferrara +2
We have obtained spectra of three QSO/AGNs with the GHRS aboard the Hubble Space Telescope to search for absorption from low column density gas in the halo of the dwarf spheroidal…
A catalogue of the voids in the IRAS 1.2-Jy survey
Hagai El-Ad, Tsvi Piran, Luiz Nicolaci da Costa
Using the VOID FINDER algorithm we have compiled a catalogue of voids in the IRAS 1.2-Jy sample. The positions of the voids correspond well to underdense regions seen in the IRAS s…
Hot HB stars in globular clusters - physical parameters and consequences for theory. III. NGC 6752 and its long blue vertical branch
Sabine Moehler, Uli Heber, Gero Rupprecht
We present spectroscopic analyses of 17 faint blue stars in the globular cluster NGC 6752. Effective temperatures, surface gravities, and helium abundances are determined and compa…