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

[Astronomy seminar announcements]

Dear all,


The next SU astronomy departmental seminar will take place on Friday October 20 at 10:30am in room FC61 (AlbaNova building, 6th floor) and on zoom (https://stockholmuniversity.zoom.us/s/61002076352).


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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

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