Galactic Archeology – Lecture topic on the Young Scientist’s Tribune

Candidate of Physical and Mathematical Sciences Tatyana Mikhailovna Sitnova will talk about how far into the past modern astronomical observations allow us to look into the past.

12 October 2022 at 19.00 an astrophysicist, candidate of physical and mathematical sciences, researcher of the stellar spectroscopy group of the Institute of Astronomy of the Russian Academy of Sciences (INASAN) will speak in the conference hall of the Planetarium, — Sitnova Tatyana Mikhailovna.

The topic of the lecture: “Galactic Archaeology”.

About half a century ago, a field of astronomy emerged called galactic archaeology. She studies the oldest stars, whose age is comparable to the age of the universe. Now a dozen new papers appear every week on studies of the chemical composition and motion parameters of the oldest stars in the Milky Way and nearby dwarf galaxies, and stellar streams are discovered. Such a number of new works is caused by the emergence of a large amount of data from the space satellite Gaia and ground-based spectral observations.

To understand the evolution of galaxies, it is important to take into account the interconnection of processes that occur at different scales, from the production of chemical elements inside stars through the fusion of nuclei of lighter elements, to the merging of entire galaxies and even their clusters. Thanks to the accumulation of a large amount of data on the chemical composition of stars, their coordinates and velocities, a detailed reconstruction of the events that took place in our galaxy became possible.

This lecture contains the most illustrative results that help to present the dynamical and chemical processes taking place in our galaxy, as well as to restore their chronology. How far into the past can modern astronomical observations allow us to look? How much does the most massive star weigh? What is Fimbultul? What subsystems does our galaxy consist of? How are different chemical elements produced? What was the galaxy like before, why is it like this now and what does the future hold for it? We are waiting for you at the lecture!

The lecture is accompanied by a presentation. After the lecture, everyone can ask the researcher questions about the current topic.

Tickets can be bought in the Planetarium ticket office or on the website under “Buy a ticket”. We invite everyone!

To buy a ticket

“Tribune of a Young Scientist” is designed to strengthen the planetarium’s position as the largest center for the popularization of natural scientific knowledge, where young scientists provide answers to the most pressing questions in modern science. Our new project “Tribune of a Young Scientist” provides an excellent opportunity for young scientists to express themselves not only with their scientific achievements, but also to try themselves as popularizers of astronomy, as well as to give visitors the opportunity to get to know talented young people. The lecture cycle “The Tribune of a Young Scientist” is primarily designed for those of you who are really interested in astronomy, physics and natural sciences in general, who want to keep abreast of modern scientific achievements, aiming to gain deeper knowledge.

We invite everyone!

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