[Astronomy seminar] Reminder: Astronomy departmental seminar Friday October 20 at 10:30am - Adam Rains (UU)

Fri Oct 20 10:08:06 CEST 2023

Dear all,

This is a reminder of the weekly SU astronomy departmental seminar that 
will take place in about 22 minutes, at 10:30am in room FC61 (AlbaNova 
building, 6th floor) and on zoom 
(https://stockholmuniversity.zoom.us/s/61002076352). As usual, we 
encourage you to attend in person if possible.

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Speaker: Adam Rains

Title: Exploring Optical Cool Dwarf Chemistry with Both Data-Driven and 
Physical Models

Event: https://indico.fysik.su.se/e/adam-rains

Abstract:

Detailed chemical studies of Solar-type stars have long been routine in 
stellar astrophysics, making possible studies in Galactic chemodynamics 
and exoplanet demographics. However, similar understanding of the 
chemistry of M and late-K dwarfs---the most common stars in the Galaxy 
and most likely to host planets---has been greatly hampered both 
observationally and theoretically by the complex molecular chemistry of 
their atmospheres. During this talk I will discuss the importance of 
well-constrained cool dwarf benchmark stars, how we can take advantage 
of trends in Galactic chemodynamics as applied to cool dwarf chemistry, 
and how these both relate to my recent work exploring the the spectra 
and chemistry of these stars at optical wavelengths using both 
data-driven and physical models. In particular, I demonstrate the 
ability of a data-driven Cannon model to successfully recover [Fe/H] and 
[Ti/Fe] from low-medium resolution optical spectra, investigate the 
sensitivity of MARCS model spectra to a broader set of chemical 
abundances to inform future work, and provide insight into the 
reliability of MARCS models for cool dwarf stars.

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We look forward to seeing many of you there. Thanks!

Adur and Adélaïde

Upcoming Events:

2023-10-27 Maryam Saberi
2023-11-03 TBA
2023-11-10 Alberto Saldana Lopez
2023-11-17 TBA
2023-11-24 Aline Chu
2023-12-01 Heitor Ernandes
2023-12-08 Quentin Perceval Xavier Pognan

You can subscribe to the seminars calendar in: 
https://ttt.astro.su.se/ical/astro-seminars.ics
(Please note that calendar can be subject to updates)

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Join Zoom Meeting:
https://stockholmuniversity.zoom.us/s/61002076352
Meeting ID: 610 0207 6352