Splinter Meeting LowMet
Star formation, feedback and chemistry of the low-metallicity ISM
Time: Thursday September 12, 16:15-18:00 and Friday September 13, 14:00-15:45 and 16:15-18:00 CEST (UTC+2)
Room: S23
Convenor(s): Thomas Bisbas (1),
Vittoria Brugaletta (2)
1) Zhejiang Laboratory (China),
2) University of Cologne (Germany)
The interplay between stellar evolution and feedback offers valuable insights into the evolution and structure of metal-poor gas, prevalent in the outer regions of the Milky Way as well as in numerous local and distant galaxies. Low–metallicity environments experience reduced cooling processes as well as a different stellar feedback from massive stars, compared to metal-rich environments. Moreover, most studies focusing on the low-metallicity ISM assume a linear scaling to all elemental abundances and the gas-to-dust ratio. However, carbon, nitrogen and oxygen are enriched differentially due to stellar nucleosynthesis combined with the stellar life cycle. Observations indicate subsolar C/O ratios in various types of galaxies including starbursts, high-redshift galaxies, and low-metallicity dwarfs. This α-enhanced ISM plays an important role in the star-formation process, the initial mass function, the chemistry of the gas and consequently the cooling line emission. In this splinter session, we will discuss and connect the recent developments and observations in all these areas, to acquire a better understanding of the relevant processes that regulate metal-poor environments. Topics include: -- Galactic chemical evolution models, abundances, gas-to-dust ratios. -- Photodissociation regions and synthetic observations in low-metallicity gas. -- Star formation, evolution and feedback at low metallicities.
Program
Thursday September 12, 16:15-18:00 Star formation, feedback and chemistry of the low-metallicity ISM (S23)
Friday September 13, 14:00-15:45 Star formation, feedback and chemistry of the low-metallicity ISM (S23)
Friday September 13, 16:15-18:00 Star formation, feedback and chemistry of the low-metallicity ISM (S23)
Related contributions
| Presenter | Title | Type |
|---|---|---|
| Elisa Schösser | Metal-poor massive OB stars in the Magellanic Bridge | Contributed Talk |
| Elisa Schösser | Metal-poor massive OB stars in the Magellanic Bridge | Contributed Talk |
| Katharina Jurk | JWST IFU observations of a massive YSO in the LMC | Contributed Talk |
| Masato Kobayashi | The critical metallicity in the formation of magnetized molecular clouds driven by atomic colliding flows | Contributed Talk |
| Thomas G. Bisbas | The carbon cycle in α-enhanced ISM conditions | Poster |
| Vittoria Brugaletta | The regulation of star formation by the variable far-UV radiation and cosmic-ray ionization rate in low-metallicity environments | Poster |