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
19 papers · 1 filter
Unveiling the new generation of stars in NGC 604 with Gemini-NIRI
Cecilia Farina, Guillermo L. Bosch, Rodolfo H. Barba
We present a near infrared study focused on the detection and characterization of the youngest stellar component of the NGC 604 giant star-forming region, in the Triangulum galaxy…
VVV DR1: The First Data Release of the Milky Way Bulge and Southern Plane from the Near-Infrared ESO Public Survey VISTA Variables in the Via Lactea
R. K. Saito, M. Hempel, D. Minniti +107
The ESO Public Survey VISTA Variables in the Via Lactea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for…
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…
Galaxy interactions II: High density environments
Sol Alonso, Valeria Mesa, Nelson Padilla +1
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloa…
Galaxy interactions I: Major and minor mergers
Diego G. Lambas, Sol Alonso, Valeria Mesa +1
We study galaxy pair samples selected from the Sloan Digital Sky Survey (SDSS-DR7) and we perform an analysis of minor and major mergers with the aim of investigating the dependenc…
The White Dwarf Mass and the Accretion Rate of Recurrent Novae: an X-ray Perspective
Koji Mukai, Jennifer L. Sokoloski, Thomas Nelson +1
We present recent results of quiescent X-ray observations of recurrent novae (RNe) and related objects. Several RNe are luminous hard X-ray sources in quiescence, consistent with a…
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…
Conditional pair distributions in many-body systems: Exact results for Poisson ensembles
René D. Rohrmann, Ernesto Zurbriggen
We introduce a conditional pair distribution function (CPDF) which characterizes the probability density of finding an object (e.g., a particle in a fluid) to certain distance of o…
Exact solution of the Percus-Yevick integral equation for fluid mixtures of hard hyperspheres
René D. Rohrmann, Andrés Santos
Structural and thermodynamic properties of multicomponent hard-sphere fluids at odd dimensions have recently been derived in the framework of the rational function approximation (R…
Two O2 If*/WN6 stars possibly ejected from the massive young Galactic cluster Westerlund 2
A. Roman-Lopes, R. H. Barba, N. I. Morrell
In this paper we report the identification of two new Galactic O2 If*/WN6 stars (WR20aa and WR20c), in the outskirt of the massive young stellar cluster Westerlund 2. The morpholog…
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…
A multifrequency study of the active star forming complex NGC6357. I. Interstellar structures linked to the open cluster Pis24
C. E. Cappa, R. Barbá, N. U. Duronea +4
We investigate the distribution of the gas (ionized, neutral atomic and molecular), and interstellar dust in the complex star forming region NGC6357 with the goal of studying the i…
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…
The Galactic O-Star Spectroscopic Survey. I. Classification System and Bright Northern Stars in the Blue-Violet at R~2500
A. Sota, J. Maíz Apellániz, N. R. Walborn +5
We present the first installment of a massive spectroscopic survey of Galactic O stars, based on new, high signal-to-noise ratio, R~2500 digital observations from both hemispheres…