1.3k citations · 13.9k across the 272 of their papers we have counts for
16 papers · 1 filter
A new procedure for defining a homogenous line-list for solar-type stars
S. G. Sousa, N. C. Santos, V. Adibekyan +9
Context. The homogenization of the stellar parameters is an important goal for large observational spectroscopic surveys, but it is very difficult to achieve it because of the dive…
Relative frequencies of supernovae versus properties of spiral hosts
A. A. Hakobyan, T. A. Nazaryan, V. Zh. Adibekyan +8
In this work, we present an analysis of SNe number ratios in spiral galaxies with different morphological subtypes, luminosities, sSFR, and metallicities, to provide important info…
Supernovae in paired host galaxies
T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan +5
We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different level…
Supernovae in paired galaxies
T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan +5
We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different level…
Li depletion in solar analogues with exoplanets: Extending the sample
E. Delgado Mena, G. Israelian, J. I. González Hernández +8
We want to study the effects of the formation of planets and planetary systems on the atmospheric Li abundance of planet host stars. In this work we present new determinations of l…
Orbital and physical properties of planets and their hosts: new insights on planet formation and evolution
V. Zh. Adibekyan, P. Figueira, N. C. Santos +7
We explore the relations between physical and orbital properties of planets and properties of their host stars to identify the main observable signatures of the formation and evolu…
The PLATO 2.0 Mission
H. Rauer, C. Catala, C. Aerts +159
PLATO 2.0 has recently been selected for ESA's M3 launch opportunity (2022/24). Providing accurate key planet parameters (radius, mass, density and age) in statistical numbers, it…
New and updated stellar parameters for 90 transit hosts. The effect of the surface gravity
A. Mortier, N. C. Santos, S. G. Sousa +5
Context. Precise stellar parameters are crucial in exoplanet research for correctly determining of the planetary parameters. For stars hosting a transiting planet, determining of t…
New and updated stellar parameters for 71 evolved planet hosts. On the metallicity - giant planet connection
A. Mortier, N. C. Santos, S. G. Sousa +5
It is still being debated whether the well-known metallicity - giant planet correlation for dwarf stars is also valid for giant stars. For this reason, having precise metallicities…
Is there plenty of metal-poor stars with planets in the Galactic thick disk?
V. Zh. Adibekyan, N. C. Santos, S. G. Sousa +2
We performed an uniform spectroscopic analysis of 1111 FGK dwarfs observed as part of the HARPS GTO planet search program. We applied a purely chemical approach, based on [alpha/Fe…
SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs I. New atmospheric parameters and masses for 48 stars with planets
N. C. Santos, S. G. Sousa, A. Mortier +8
Due to the importance that the star-planet relation has to our understanding of the planet formation process, the precise determination of stellar parameters for the ever increasin…
Paired galaxies with different activity levels and their supernovae
T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan +5
We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different level…
Deriving precise parameters for cool solar-type stars. Optimizing the iron line list
M. Tsantaki, S. G. Sousa, V. Zh. Adibekyan +3
Temperature, surface gravity, and metallicitity are basic stellar atmospheric parameters necessary to characterize a star. We aim to improve the description of the spectroscopic te…
Kinematics and chemical properties of the Galactic stellar populations. The HARPS FGK dwarfs sample
V. Zh. Adibekyan, P. Figueira, N. C. Santos +7
(Abridged) We analyze chemical and kinematical properties of about 850 FGK solar neighborhood long-lived dwarfs observed with the HARPS high-resolution spectrograph. The stars in t…
Searching for the signatures of terrestrial planets in F-, G-type main-sequence stars
J. I. González Hernández, E. Delgado-Mena, S. G. Sousa +4
We have studied the volatile-to-refractory abundance ratios to investigate their possible relation with the low-mass planetary formation. We present a fully differential chemical a…
On the Nature of Unconfirmed Supernovae
L. S. Aramyan, A. R. Petrosian, A. A. Hakobyan +5
We study the nature of 39 unconfirmed supernovae (SNe) from the sky area covered by the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), using available photometric and imagin…