[Graduados] Hoy charla en el Meridiano: "Connecting the dots: stellar parameters, binarity, and kinematics"

[Secretaría de Ciencia y Técnica]

A toda la comunidad, les reenviamos información sobre la charla 
"Connecting the dots: stellar parameters, binarity, and kinematics".

Saludos,

Secyt-FCAG


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Estimadas/os colegas,

Hoy a las 12:30, en el Salón Meridiano, contaremos con una charla que 
brindará Matti Dorsch, Mtr. que se encuentra realizando su Doctorado en 
el Institut für Physik und Astronomie, Universität Potsdam, de Alemania.

La charla es hoy, en el Salón Meridiano, de12:30 a 13:30 hs.

Para quienes no pudan asistir presencial, les dejo el link de zoom:

https://zoom.us/j/95391681413

ID de reunión: 953 9168 1413
Código de acceso: 264310

Más abajo encontrán el título y resumen.

Las/os esperamos.

Dr. Favio R. Faifer
Director
Instituto de Astrofísica de La Plata
CONICET-UNLP

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Título: Connecting the dots: stellar parameters, binarity, and kinematics

Resumen: Hot subdwarf stars are low-mass stars of spectral type O and B 
(sdO/B) that have very thin or no hydrogen envelopes. Almost all of 
these core helium burning stars seem to have formed from binary 
interaction: common envelope evolution, stable Roche lobe overflow, or 
stellar mergers.

Detailed analysis of single stars are one important way to constrain 
these formation processes. However, such analyses can not fully 
constrain important quantities such as the relative importance of 
specific formation channels or the parameter ranges that can be 
produced. This information can only be obtained from statistically 
significant samples of stars. I will talk about insights gained from the 
spectral energy distributions and Galactic kinematics of the sample 
spectroscopically identified hot subdwarf stars. This will include their 
observed radius and mass distributions, the prevalence of F/G/K-type 
companions, as well as their membership to the Galactic thin disk, thick 
disk, and halo. These results are discussed briefly in the context of 
existing evolutionary models, pointing out the most important 
differences to their predictions.