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
Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr
G. Tovmassian, J. F. Gonzalez, M. -S. Hernandez +3
We obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system.…
Physical processes involved in the EUV "Surge" Event of 09 May 2012
Marcelo López Fuentes, Cristina H. Mandrini, Mariano Poisson +4
We study an EUV confined ejection observed on 09 May 2012 in active region (AR) NOAA 11476. For the analysis we use observations in multiple wavelengths (EUV, X-rays, H, and mag…
Using non-solar-scaled opacities to derive stellar parameters. Toward high-precision parameters and abundances
C. Saffe, M. Flores, P. Miquelarena +5
We implemented non-solar-scaled opacities in a simultaneous derivation of fundamental parameters and abundances. We carried out a high-precision stellar parameters and abundance de…
HD 38858: a solar type star with a 10.8 yr activity cycle. Searching for Balmer and metallic line variations
M. Flores, J. F. González, M. Jaque Arancibia +5
Context. The detection of chromospheric activity cycles in solar-analogue and twin stars, can be used to put in context the solar cycle. However, there is a relatively low percenta…
HD 149277: a rare short-period SB2 system with a subsynchronously rotating magnetic He-rich primary
J. F. González, S. Hubrig, S. P. Järvinen +1
HD 149277 is a rare SB2 system with a slowly rotating magnetic He-rich primary with d. The CFHT/ESPaDOnS archive spectra revealed $P_{\rm orb}=11.5192 \pm 0.0005…
On the evolution of ultra-massive white dwarfs
María E. Camisassa, Leandro G. Althaus, Alejandro H. Córsico +6
Ultra-massive white dwarfs are powerful tools to study various physical processes in the Asymptotic Giant Branch (AGB), type Ia supernova explosions and the theory of crystallizati…
On the nature of the black-body stars
Aldo Serenelli, Rene Rohrmann, Masataka Fukugita
A selection of 17 stars in the Sloan Digital Sky Survey, previously identified as DC class white dwarfs (WDs), has been reported to show spectra very close to blackbody radiation i…
Reticuli binary system: A puzzling chromospheric activity pattern
M. Flores, C. Saffe, A. Buccino +4
We perform, for the first time, a detailed long-term activity study of the binary system Ret. We use all available HARPS spectra obtained between the years 2003 and 2016. We bu…
X-ray, UV, and optical observations of the accretion disk and boundary layer in the symbiotic star RT Cru
G. J. M. Luna, K. Mukai, J. L. Sokoloski +8
Compared to mass transfer in cataclysmic variables, the nature of accretion in symbiotic binaries in which red giants transfer material to white dwarfs (WDs) has been difficult to…