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Article
The unusual gamma-ray burst GRB 101225A explained as a minor body falling onto a neutron star
The Christmas γ-ray burst of 25 December 2010 (GRB 101225A, first detected by the Swift orbiting observatory) was a very unusual event. It was long lasting without the typical decreasing trend, its X-ray after...
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Article
Five supernova survey galaxies in the southern hemisphere. II. the supernova rates
Based on the database compiled in the first article of this series, with 56 SN events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of supernovae (SNe) of different types along th...
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Article
X-ray illumination of the ejecta of supernova 1987A
The SAINTS (SN 1987A Intensive Study) team has been observing the nearby supernova SN 1987A using the Hubble Space Telescope for 17 years. They have been rewarded with a view of a phase in the life of a supern...
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Article
Five supernova survey galaxies in the southern hemisphere. I. Optical and near-infrared database
The determination of the supernova (SN) rate is based not only on the number of detected events, but also on the properties of the parent galaxy population. This is the first paper of a series aimed at obtaini...
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Chapter and Conference Paper
Future Optical and Near-Infrared Facilities
Several projects and studies are being prepared for the second decade of the third millennium, both in space and on the ground. Here we review the status of optical / near infrared facilities now on the drawin...
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Chapter and Conference Paper
ELT Observations of Supernovae at the Edge of the Universe
In this paper we discuss the possibility of using Supernovae as tracers of the star formation history of the Universe for the range of stellar masses ~ 3 – 30 M⊙ and possibly beyond. We simulate the observatio...
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Article
An enigmatic long-lasting γ-ray burst not accompanied by a bright supernova
The tidy classification system that divided γ-ray bursts (GRBs) into long-duration busts (lasting more than two seconds) and short may have had its day. The final nail in its coffin may be GRB 060614. Discover...
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Chapter and Conference Paper
The Rate and the Origin of Type Ia SNe in Radio Galaxies
An analysis of type Ia supernova (SNIa) events in early type galaxies from the Cappellaro et al. [6] database provides strong evidence that the rate of type Ia supernovae (SNe) in radio-loud galaxies is about ...
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Chapter and Conference Paper
Massive Star Feedback on the IMF
We have obtained the first measures of the mass accretion rates on stars of the Trapezium Cluster. They appear systematically lower than those of similar stars in the Taurus-Auriga association. Together with p...
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Chapter and Conference Paper
High-Resolution Radio Imaging of Young Supernovae: SN 1979C, SN 1986J, and SN 2001gd
The high resolution obtained through the use of VLBI gives an unique opportunity to directly observe the interaction of an expanding radio supernova with its surrounding medium. We present here results from ou...
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Chapter
Observational Constraints to the Evolution of Massive Stars
We consider some aspects of the evolution of massive stars which can only be elucidated by means of “indirect” observations, i.e. measurements of the effects of massive stars on their environments. We discuss in ...
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Article
Erratum: Discovery of a supernova explosion at half the age of the Universe
Nature 391, 51– 54 (1998) The name of one of the authors (Ariel Goobar) of this Letter was inadvertently removed during page make-up. A. Goobar is in the Physics Department, Stockholm University, as indicated ...
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Article
Discovery of a supernova explosion at half the age of the Universe
The ultimate fate of the Universe, infinite expansion or a big crunch, can be determined by using the redshifts and distances of very distant supernovae to monitor changes in the expansion rate. We can now find1 ...
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Chapter and Conference Paper
Sub-Arcsecond near-IR Imaging and Long-Slit Spectroscopy of NGC 7027
We report sub-arcsecond narrow band imaging in the lines of H2 2.1218 μm, Brγ 2.16 μm, [Fe II] 1.664 μm of the Planetary Nebulae NGC 7027. Data were obtained at the 3.5 m telescope at Calar Alto Observatory (Spai...
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Chapter
Maximum Luminosities of Type Ia Supernovae from Cepheid Distances and the Value of H o
Supernovae of type Ia, with neutral colors (B - V ≃ 0.0),are the best standard candles known. They define at maximum light a tight, perfectly linear Hubble diagram out to 30 000 km s-1. Therefore the absolute mag...
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Chapter and Conference Paper
Dust and Stars in the Nuclear Region of M51
The observations were made with the Hubble Space Telescope (HST) 1 as part of the SINS (Supernova INtensive Study) project, to determine accurate UV (early epoch) and optical (late epoch) magnitudes of SNIc 1994I...
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Article
Correction: The shape, expansion rate and distance of supernova 1993J from VLBI measurements
Nature 368, 610-613 (1994) IN this letter some of the references were incorrectly numbered (details available from the first author).
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Article
The shape, expansion rate and distance of supernova 1993J from VLBI measurements
SUPERNOVA 1993J is one of the closest supernovae discovered this century, allowing observations with very high linear resolution. Radio emission from the supernova became visible within days of the first opti...
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Article
The progenitor of SN1987A
One of the reasons why the bright supernova SN1987A is of such importance is the fact that its proximity would allow for the first time, the identification of a supernova progenitor star. Attempts to establis...
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Chapter and Conference Paper
Evolution of Dust in Planetary Nebulae
We have analyzed the IRAS data of 234 planetary nebulae (PNe) determining the properties of the dust contained in their envelopes. The main result is that the dust grains undergo substantial evolution during t...
