1.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Consejo Nacional de Investigaciones Científicas y TécnicasAR105 papers
- National University of San JuanAR51 papers
- University of La SerenaCL38 papers
- Institute of Astronomy and Space PhysicsAR34 papers
- European Southern ObservatoryCL28 papers
- Argentine National ObservatoryAR25 papers
- Universidad Nacional de La PlataAR25 papers
- Leibniz Institute for Astrophysics PotsdamDE24 papers
- Universidad de Buenos AiresAR23 papers
- Instituto de Astrofísica de La Plata20 papers
- Universidad Nacional de CórdobaAR18 papers
- Centro Científico Tecnológico - San JuanAR16 papers
9 papers · 2 filters
Implications of the non-detection of X-ray emission from HD 149427
Matthias Stute, Gerardo J. M. Luna
HD 149427 is a very enigmatic object. It has been classified either as a planetary nebula or as a D'-type symbiotic star. Its distance is also highly uncertain. Furthermore, HD 149…
NSV 11749, an elder sibling of the born again stars V605 Aql and V4334 Sgr?
M. M. Miller Bertolami, R. D. Rohrmann, A. Granada +1
We argue that NSV 11749, an eruption observed in the early twentieth century, was a rare event known as "very late thermal pulse" (VLTP). To support our argument we compare the lig…
Spectroscopic variability and magnetic fields of HgMn stars
S. Hubrig, J. F. Gonzalez, I. Ilyin +7
The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications…
Magnetic field studies of massive main sequence stars
M. Schoeller, S. Hubrig, I. Ilyin +5
We report on the status of our spectropolarimetric observations of massive stars. During the last years, we have discovered magnetic fields in many objects of the upper main sequen…
Further Results from the Galactic O-Star Spectroscopic Survey: Rapidly Rotating Late ON Giants
Nolan R. Walborn, Jesus Maiz Apellaniz, Alfredo Sota +5
With new data from the Galactic O-Star Spectroscopic Survey, we confirm and expand the ONn category of late-O, nitrogen-enriched (N), rapidly rotating (n) giants. In particular, we…
The strong magnetic field of the large-amplitude beta Cephei pulsator V1449 Aql
S. Hubrig, I. Ilyin, M. Briquet +5
Only for very few beta Cephei stars has the behaviour of the magnetic field been studied over the rotation cycle. During the past two years we have obtained multi-epoch polarimetri…
Spatial distribution and statistical properties of small-scale convective vortex-like motions in a quiet Sun region
S. Vargas Dominguez, J. Palacios, L. Balmaceda +2
High-resolution observations of a quiet Sun internetwork region taken with the Solar 1-m Swedish Telescope in La Palma are analyzed. We determine the location of small-scale vortex…
He II 4686 in eta Carinae: collapse of the wind-wind collision region during periastron passage
M. Teodoro, A. Damineli, J. I. Arias +23
The periodic spectroscopic events in eta Carinae are now well established and occur near the periastron passage of two massive stars in a very eccentric orbit. Several mechanisms h…
The VLT-FLAMES Tarantula Survey II: R139 revealed as a massive binary system
W. D. Taylor, C. J. Evans, H. Sana +22
We report the discovery that R139 in 30 Doradus is a massive spectroscopic binary system. Multi-epoch optical spectroscopy of R139 was obtained as part of the VLT-FLAMES Tarantula…