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- Institute of Astrophysics and Space SciencesPT879 papers
- Centre National de la Recherche ScientifiqueFR617 papers
- University of GenevaCH418 papers
- Instituto de Astrofísica de CanariasES400 papers
- Universidad de La LagunaES359 papers
- Université Paris CitéFR355 papers
- Aix-Marseille UniversitéFR328 papers
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- Centro de Astrofísica da Universidade do PortoPT306 papers
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14 papers · 2 filters
Stellar chromospheric activity of 1,674 FGK stars from the AMBRE-HARPS sample I. A catalogue of homogeneous chromospheric activity
J. Gomes da Silva, N. C. Santos, V. Adibekyan +9
We present a catalogue of homogeneous determined chromospheric emission (CE), stellar atmospheric parameters and ages for 1,674 FGK main sequence (MS), subgiant, and giant stars. T…
Automated approach to measure stellar inclinations: validation through large-scale measurements on the red giant branch
C. Gehan, B. Mosser, E. Michel +1
Measuring stellar inclinations is fundamental to understand planetary formation and dynamics as well as physical conditions during star formation. Oscillation spectra of red giant…
On the nature of VX Sagitarii: Is it a TZO, a RSG or a high-mass AGB star?
H. M. Tabernero, R. Dorda, I. Negueruela +1
Aims. We present a spectroscopic analysis of the extremely luminous red star VX Sgr based on high-resolution observations combined with AAVSO light curve data. Given the puzzling c…
The GRAVITY Young Stellar Object survey IV. The CO overtone emission in 51 Oph at sub-au scales
GRAVITY Collaboration, M. Koutoulaki, R. Garcia Lopez +69
51 Oph is a Herbig Ae/Be star that exhibits strong near-infrared CO ro-vibrational emission at 2.3 micron, most likely originating in the innermost regions of a circumstellar disc.…
From Solar-like to Mira stars: a unifying description of stellar pulsators in the presence of stochastic noise
Margarida S. Cunha, Pedro P. Avelino, William J. Chaplin
We discuss and characterise the power spectral density properties of a model aimed at describing pulsations in stars from the main-sequence to the asymptotic giant branch. We show…
The CARMENES search for exoplanets around M dwarfs -- A deep learning approach to determine fundamental parameters of target stars
V. M. Passegger, A. Bello-García, J. Ordieres-Meré +26
Existing and upcoming instrumentation is collecting large amounts of astrophysical data, which require efficient and fast analysis techniques. We present a deep neural network arch…