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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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14 papers · 2 filters
The first study of 54 new eccentric eclipsing binaries in our Galaxy
P. Zasche, M. Wolf, R. Uhlar +12
We present an analysis of the apsidal motion and light curve parameters of 54 never-before-studied galactic Algol-type binaries. This is the first analysis of such a large sample o…
Heating of the solar photosphere during a white-light flare
Jan Jurcak, Jana Kasparova, Michal Svanda +1
The \ion{Fe}{i} lines observed by the Hinode/SOT spectropolarimeter were always seen in absorption, apart from the extreme solar limb. Here we analyse a unique dataset capturing th…
Complete ejection of OB stars from very young star clusters and the formation of multiple populations
Long Wang, Pavel Kroupa, Tereza Jerabkova
Recently, three stellar sequences separated in age by about 1 Myr were discovered in the Orion Nebula Cluster (ONC; Beccari et al. 2017). Kroupa et al. (2018) suggest that such sma…
OGLE-2017-BLG-0039: Microlensing Event with Light from the Lens Identified from Mass Measurement
C. Han, Y. K. Jung, A. Udalski +58
We present the analysis of the caustic-crossing binary microlensing event OGLE-2017-BLG-0039. Thanks to the very long duration of the event, with an event time scale $t_{\rm E}\sim…
The ASAS-SN Catalog of Variable Stars II: Uniform Classification of 412,000 Known Variables
T. Jayasinghe, K. Z. Stanek, C. S. Kochanek +12
The variable stars in the VSX catalog are derived from a multitude of inhomogeneous data sources and classification tools. This inhomogeneity complicates our understanding of varia…
V1369 Cen high resolution panchromatic late nebular spectra in the context of a unified picture for nova ejecta
Elena Mason, Steven N. Shore, Ivan De Gennaro Aquino +3
Nova Cen 2013 (V1369 Cen) is the fourth bright nova observed panchromatically through high resolution UV+optical multi epoch spectroscopy. It is also the nova with the richest set…
A sextet of clusters in the Vela OB2 region revealed by Gaia
Giacomo Beccari, Henri M. J. Boffin, Tereza Jerabkova +5
Using Gaia DR2 data, combined with OmegaCAM ground-based optical photometry from the AD-HOC survey, and detailed Radial Velocity measurements from ESO-Gaia, we analyse in detail a…
Physical properties of beta Lyr A and its opaque accretion disk
D. Mourard, M. Broz, J. Nemravova +23
Mass exchange and mass loss in close binaries can significantly affect their evolution, but a complete self-consistent theory of these processes is still to be developed. Processes…
Repeated transient jets from a warped disk in the symbiotic prototype Z And: A link to the long-lasting active phase
Augustin Skopal, Taya. N. Tarasova, Marek Wolf +2
Active phases of some symbiotic binaries survive for a long time from years to decades. The accretion process onto a white dwarf (WD) sustaining long-lasting activity, and sometime…
Understanding the HMI pseudocontinuum in white-light solar flares
M. Svanda, Jan Jurcak, Jana Kasparova +1
We analyse observations of the X9.3 solar flare (SOL2017-09-06T11:53) observed by SDO/HMI and Hinode/SOT. Our aim is to learn about the nature of the HMI pseudocontinuum Ic used as…
Gaia Data Release 2: Variable stars in the colour-absolute magnitude diagram
Gaia Collaboration, L. Eyer, L. Rimoldini +14
The ESA Gaia mission provides a unique time-domain survey for more than 1.6 billion sources with G ~ 21 mag. We showcase stellar variability across the Galactic colour-absolute mag…
The ASAS-SN Catalog of Variable Stars I: The Serendipitous Survey
T. Jayasinghe, C. S. Kochanek, K. Z. Stanek +11
The All-Sky Automated Survey for Supernovae (ASAS-SN) is the first optical survey to routinely monitor the whole sky with a cadence of days down to V mag. ASA…
Breaking the habit - the peculiar 2016 eruption of the unique recurrent nova M31N 2008-12a
M. Henze, M. J. Darnley, S. C. Williams +70
Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This unprecedented frequency indicates an extreme object, with…
Large-scale photospheric motions determined from granule tracking and helioseismology from SDO/HMI data
Th. Roudier, M. Svanda, J. Ballot +2
Large scale flows in the Sun play an important role in the dynamo process linked to the solar cycle. The important large scale flows are the differential rotation and the meridiona…