7.1k citations
- University of TartuEE251 papers
- Centre National de la Recherche ScientifiqueFR95 papers
- Leibniz Institute for Astrophysics PotsdamDE95 papers
- Instituto de Astrofísica de CanariasES63 papers
- University of TurkuFI61 papers
- Universidad de La LagunaES59 papers
- Estonian Academy of SciencesEE58 papers
- University College LondonGB47 papers
- National Institute of Chemical Physics and BiophysicsEE45 papers
- Leiden UniversityNL42 papers
- University of HelsinkiFI42 papers
- National Institute for AstrophysicsIT38 papers
28 papers · 1 filter
Resolving the clumpy circumstellar environment of the B[e] supergiant LHA 120-S 35
Andrea F. Torres, Lydia S. Cidale, Michaela Kraus +4
B[e] supergiants (SGs) are massive post-main-sequence stars, surrounded by a complex circumstellar (CS) environment. The aim of this work is to investigate the structure and kinema…
Blazar spectral variability as explained by a twisting inhomogeneous jet
C. M. Raiteri, M. Villata
Blazar emission is dominated by non-thermal radiation from a relativistic jet pointing toward us, therefore undergoing Doppler beaming. This is responsible for flux enhancement and…
Detection of new eruptions in the Magellanic Clouds LBVs R 40 and R 110
J. C. N. Campagnolo, M. Borges Fernandes, N. A. Drake +3
We performed a spectroscopic and photometric analysis to study new eruptions in two luminous blue variables (LBVs) in the Magellanic Clouds. We detected a strong new eruption in th…
Estimating activity cycles with probabilistic methods II. The Mount Wilson Ca H&K data
N. Olspert, J. Lehtinen, M. J. Käpylä +2
Debate over the existence of branches in the stellar activity-rotation diagrams continues. Application of modern time series analysis tools to study the mean cycle periods in chrom…
Estimating activity cycles with probabilistic methods I. Bayesian Generalised Lomb-Scargle Periodogram with Trend
N. Olspert, J. Pelt, M. J. Käpylä +1
Period estimation is one of the central topics in astronomical time series analysis, where data is often unevenly sampled. Especially challenging are studies of stellar magnetic cy…
Infalling groups and galaxy transformations in the cluster A2142
Maret Einasto, Boris Deshev, Heidi Lietzen +7
We study galaxy populations and search for possible merging substructures in the rich galaxy cluster A2142. Normal mixture modelling revealed in A2142 several infalling galaxy grou…