Molecules and planets in the outer Galaxy: is there a boundary of the Galactic Habitable Zone?

Session

Session-6: Galactic Habitable Zone in space and time

14 Nov 2024, 14:30

Sala Capitolo (Fuligno Cenacle)

46. Galactic habitable zone from the perspective of phosphorous enrichment

Dr Takuji Tsujimoto (National Astronomical Observatory of Japan)

14/11/2024, 14:30

Phosphorus (P) is one of the vital elements for life. So, it is important to know how P abundance changes with place and time in the Galaxy for the discussion of habitability. So far, it was considered that core-collapse supernovae are the major production site of P.
However, the observed P abundances of Galactic stars have challenged this hypothesis. Recently, a new model for the chemical...

47. The best place and time to live in the Milky Way: the impact of Gamma Ray Bursts and Supernovae on planetary habitability

Riccardo Spinelli (Istituto Nazionale di Astrofisica (INAF))

14/11/2024, 15:00

Several factors contribute to the emergence and development of life on planets. In addition to local factors (e.g., intrinsic planetary properties and host star characteristics), planetary habitability can be influenced by the larger-scale radiation environment of the galaxy. Powerful astrophysical transient sources of high-energy radiation, such as Gamma Ray Bursts (GRBs) and Supernovae...

48. Habitability across cosmological timescales

Erik Zackrisson

Even if only a minor fraction of the terrestrial planets in the habitable zone around red dwarfs turn out to have conditions required for the emergence of intelligent life, the large numbers of such stars, coupled to their extremely long main-sequence lifetimes, suggest that most intelligent observers should find themselves on planets around red dwarfs in the distant future, and not around...