Results 91 to 100 of about 64,604 (243)

Plasma properties from the multi-wavelength analysis of the November 1st 2003 CME/shock event

open access: yesJournal of Advanced Research, 2013
The analysis of the spectral properties and dynamic evolution of a CME/shock event observed on November 1st 2003 in white-light by the LASCO coronagraph and in the ultraviolet by the UVCS instrument operating aboard SOHO, has been performed to compute ...
Carlo Benna   +3 more
doaj   +1 more source

The slowly variable star FY Lacertae

open access: yes, 2017
Photometric observations and analysis of FY Lac were performed in order to determine the variability characteristics, using measurements taken at Loiano site of Bologna Astronomical Observatory and AAVSO data.
Benna, Carlo   +6 more
core  

The light curve model fitting of Large Magellanic Cloud Cepheids: MESA-RSP versus Stellingwerf’s code predictions

open access: yesAstronomy & Astrophysics
Context. A major challenge in modeling classical Cepheids is the treatment of convection, particularly its complex interplay with pulsation. This inherently three-dimensional (3D) process is typically approximated in one-dimensional (1D) hydrocodes ...
Deka M.   +11 more
doaj   +1 more source

The GAPS programme at TNG

open access: yesAstronomy & Astrophysics
Context. The transition regime between giant planets (GPs) and brown dwarfs (BDs) is still an open subject of study in exoplanetary science. A complete understanding of the population of long-period GPs and BDs would be pivotal for improving our ...
Pinamonti M.   +26 more
doaj   +1 more source

VST-SMASH: VST Survey of Mass Assembly and Structural Hierarchy

open access: yesAstronomy & Astrophysics
Context. Understanding the formation and evolution of late-type galaxies requires deep imaging for tracing the faintest stellar components in their outskirts (i.e. accreted material, diffuse halos, and tidal streams).
Ragusa R.   +11 more
doaj   +1 more source

True masses using radial velocity data with HIPPARCOS and Gaia astrometry

open access: yesAstronomy & Astrophysics
Context. Long-period companions are detected and characterised thanks to long-baseline radial velocity surveys. By combining Doppler time series with astrometry, and in particular with the proper motion anomalies technique, it is possible to put strong ...
Piccinini G.   +5 more
doaj   +1 more source

How do recollimation-induced instabilities shape the propagation of hydrodynamic relativistic jets?

open access: yesAstronomy & Astrophysics
Context. Recollimation is a phenomenon of particular importance in the dynamical evolution of jets and in the emission of high-energy radiation. Additionally, the full comprehension of this phenomenon provides insights into fundamental properties of jets
Costa A.   +6 more
doaj   +1 more source

Osservatorio Erpetologico Italiano

open access: yesActa Herpetologica, 2011

doaj   +1 more source

Broad-band properties of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies

open access: yes, 2016
We report about recent updates of broad-band properties of radio-loud narrow-line Seyfert 1 galaxies.Comment: 5 pages, no figures. Proceedings 28th Texas Symposium on Relativistic Astrophysics, Geneva (Switzerland), 13-18 December ...
Angelakis, E.   +29 more
core  

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