Program Astroworkshopu 2020

nedeľa 2020‐03‐08
09:30 – 10:30 Spoločné raňajky
10:30 – 11:00 Maria Chiara Maimone Star and Planet’s Characterization Through High Spectral Resolution
With thousands of confirmed exoplanets and an increasing number of dedicated instruments, we are finally moving into an era where we can address fundamental questions concerning the diversity of their compositions, their atmospheric and interior processes, and their formation histories. How? Via their observable spectroscopic signatures. In the last decade, tremendous progress has been made in detecting and characterizing atmospheric signatures of exoplanets through spectroscopic methods, allowing to unveil the composition for a dozen of them (Birkby, 2018). Nevertheless, these extraordinary results, we are only at the beginning: stellar and planetary models are still computed separately, and 1D models, largely used for the stars until now, do not reproduce the complexity of convection mechanism (Chiavassa & Brogi, 2019).

Our work could be the turning point: we aim at upgrading the already-in-place 3D radiative transfer code Optim3D (Chiavassa et al. 2009) – largely used for stellar purposes so far – to taking into account also the exoplanetary contribution. We propose to use simultaneously 3D Radiative Hydrodynamical simulations, performed for stars, and the innovative Global Climate Model (GCM), drawn up for exoplanets, in order to generate unprecedented precise synthetic spectra. As springboard to test the code, the analysis of CO and H2O molecules will be carried out on the well-known benchmark HD189733. Indeed, one of the most challenging problems is to disentangle star’s and its companion’s signals due to the same molecules. Hence, a complete dynamic characterization is crucial: on one side, a precise knowledge of the stellar dynamic (i.e. convection-related surface structures) would allow to extract unequivocally the planetary signal; on the other one, a well-modelled dynamic of the planet (i.e. depth, shape, and position of spectral lines) would provide us with considerable information about the planetary atmospheric circulation
11:00 – 11:30 Emil Puha The Hitchhiker’s Guide to Astronomical Databases
A brief presentation about the most extensive and open-access astronomical databases Simbad and Vizier. We will show their basic handling such as executing table queries and table crossmatches. Moreover, we'll introduce the desktop application Topcat - a table processing tool, capable to directly connect and download the necessary data from online databases. Finally, we will mention some nice Python libraries, which allow you to perform all of the mentioned tasks from your own code.
11:30 – 12:00 Matej Zigo Basic of the Debris Observation
Do you know what the space debris is? Do you know how many debris pieces are out there? Do you know the differences between the asteroid and space debris observation? Do you think that the trails on astronomic picture can only waste all the information on the image? Here in this presentation, will be summarized the basics of the space debris research and the general difficulties of capturing and processing of the data. We will talk about the necessary monitoring of these fragments, why we should study something, which was originally created by us and how the growing space debris population can cause the death of the George Clooney.
12:00 – 13:00 Spoločný obed
13:00 – 14:00 Spoločné upratovanie / balenie
14:00 – 15:00 Prehliadka observatória
(v prípade záujmu)
15:05 – 16:21 Skorší autobus: Modra, Piesok, Zochova chata – Bratislava, AS
16:00 – 16:50 Prípadné doupratovanie / balenie / záverečná diskusia / voľný program
17:05 – 18:21 Neskorší autobus: Modra, Piesok, Zochova chata – Bratislava, AS