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