Search Publications
Martian CO profiles from the solar occultation experiment of NOMAD on board TGO
Aoki, S.; Vandaele, A. C.; Daerden, F. +18 more
Carbon monoxide is one of the important minor species in the Martian atmosphere due to its role in the photochemical stability of the \ce{CO2} atmosphere and can also be used as a dynamical tracer. The SO spectrometer onboard the Trace Gas Orbiter (TGO) scans the Martian limb in the infrared provides transmittances with fine vertical sampling ($\s…
Water vapor vertical distribution in the Martian atmosphere from TGO/NOMAD observations
Aoki, S.; Vandaele, A. C.; Daerden, F. +18 more
The water vapor in the Martian atmosphere plays a significant role in the planet's current and past climate, being crucial in important chemical processes like those involved in the stability of the CO$_{2}$. The recent ExoMars 2016 mission, with its NOMAD Solar Occultation channel spectrometer onboard the Trace Gas Orbiter, allowed us to measure …
Planetary Nebulae catalogue with Gaia EDR3
Dafonte, C.; González-Santamaría, I.; Manteiga, M. +2 more
We have created a new Planetary Nebulae (PNe) catalogue by using astrometric and photometric data from Gaia EDR3. Firstly, we have developed an algorithm that selects the most reliable source from EDR3 to be the Central Star (CS) of each PN, among all sources in the neighbourhood of them. This algorithm considers both the angular distance to PN co…
Vela X-1 in depth: a review article on an outstanding object
Degenaar, N.; Utrilla, E.; Ramos-Lerate, M. +9 more
The paper - https://ui.adsabs.harvard.edu/abs/2021A%26A...652A..95K/abstract {Revisiting the archetypical wind accretor Vela X-1 in depth}. Case study of a well-known X-ray binary and the limits of our knowledge - provided a thoughtful compilation of the knowledge of the Vela X-1 system and its modelling published over decades; added new informati…
Phase spirals in cosmological simulations of Milky Way sized galaxies
Antoja, T.; Ramos, P.; García-Conde, B. +1 more
The Gaia DR2 revealed the phase spirals in the Z - Vz plane, whose origin is still under study, but linked to the Sagittarius dwarf galaxy tidal interaction. In our work, we detect phase spirals in the vertical projection Z - Vz of the disc's stellar particles for the first time in the zoom-in cosmological simulation GARROTXA which includes hydrod…
High-precision Mg abundances in the metal-rich Galactic disc: chemodynamical relations and comparison with chemical evolution models
Recio-Blanco, A.; Kordopatis, G.; Palla, M. +2 more
The [Mg/Fe] abundance ratios are a fundamental fossil signature in Galactic archaeology for tracing the chemical evolution of disc stellar populations. High-precision chemical abundances, accurate stellar ages, distances, and dynamical data, together with their direct comparison with theoretical models, are crucial to infer the Milky Way formation…
Photometric calibration of M-dwarf metallicity using Bayesian inference
Caballero, J. A.; Montes, D.; Duque-Arribas, C. +3 more
Metallicity has remained as a challenging parameter when characterizing M-type dwarf stars due to difficulties in the analysis of their spectra, dominated by molecular features, but it is required in multiple areas of astrophysics, for example to constrain theoretical stellar models or guide exoplanet searches. In order to estimate the metallicity…
Search of Exoplanets in steLLar streAms (SELLA)
Castro-González, A.; Díez Alonso, E.; Iglesias Álvarez, S. +3 more
In this work we search and characterize exoplanets orbiting members of stellar streams, structures in the Galaxy composed of stars with similar dynamic and chemical properties, and with galactic or extragalactic origin. With current facilities, the detection of exoplanets in extragalactic stellar streams, resulting from merger events, could be the…
Barium stars and their white-dwarf companions, a key to understanding evolved binaries
Escorza, A.
A rich zoo of peculiar objects forms when evolved stars with extended and loosely-bound convective envelopes, such as Asymptotic Giant Branch (AGB) stars, undergo gravitational interaction in binary systems. For example, Barium (Ba) stars are main-sequence and red-giant stars that accreted mass from the outflows of a former AGB companion. This com…
The Li-age relation: Calibration with open clusters and associations
Gilmore, G.; Montes, D.; Randich, S. +6 more
In this work we used a series of open clusters and associations observed by the Gaia-ESO Survey (GES) to study the use of lithium abundances (Li I spectral line at 6708 $\angstrom$) as an age indicator for pre- and main-sequence FGKM late-type stars. Previous studies of open clusters have shown that lithium depletion is not only strongly age depen…