9.8k citations
- Centre National de la Recherche ScientifiqueFR251 papers
- University of BelgradeRS208 papers
- National Institute for AstrophysicsIT178 papers
- California Institute of TechnologyUS171 papers
- Instituto de Astrofísica de CanariasES165 papers
- Osservatorio Astronomico di PadovaIT154 papers
- National Astronomical Observatory of JapanJP149 papers
- Sorbonne UniversitéFR147 papers
- Goddard Space Flight CenterUS142 papers
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- Observatoire de la Côte d’AzurFR133 papers
7 papers · 2 filters
Probing the physical properties of the NGC 5548 Broad Line Region using Balmer lines
L. C. Popovic, A. I. Shapovalova, V. H. Chavushyan +4
We investigate the physical characteristics of the Broad Line Region (BLR) of NGC 5548 using the Boltzmann plot (BP) method, that we applied on the Balmer lines observed from 1996…
6^Li in the atmosphere of GJ 117
D. J. Christian, M. Mathioudakis, D. Jevremovic +2
We present high resolution VLT UVES observations of the active K dwarf GJ 117. 6^Li enhancement has been shown for energetic solar events, one chromospherically active binary, and…
Dark matter in early-type galaxies: dynamical modelling of IC1459, IC3370, NGC3379 and NGC4105
S. Samurovic, I. J. Danziger
We analyse long-slit spectra of four early-type galaxies which extend from ~1 to ~3 effective radii: IC1459, IC3370, NGC3379 and NGC4105. We have extracted the full line-of-sight v…
Galactic Gradients, Postbiological Evolution and the Apparent Failure of SETI
Milan M. Cirkovic, Robert J. Bradbury
Motivated by recent developments impacting our view of Fermi's paradox (absence of extraterrestrials and their manifestations from our past light cone), we suggest a reassessment o…
Too Early? On the Apparent Conflict of Astrobiology and Cosmology
Milan M. Cirkovic
An interesting consequence of the modern cosmological paradigm is the spatial infinity of the universe. When coupled with naturalistic understanding of the origin of life and intel…
The Anthropic Principle and the Duration of the Cosmological Past
Milan M. Cirkovic
The place of an anthropic argument in the discrimination between various cosmological models is to be reconsidered following the classic criticisms of Paul C. W. Davies and Frank J…