PIRSA:25070058

The enriched circumgalactic and intergalactic medium of star-forming dwarf galaxies

Mishra, N. (2025). The enriched circumgalactic and intergalactic medium of star-forming dwarf galaxies. Perimeter Institute. https://pirsa.org/25070058

Mishra, Nishant. The enriched circumgalactic and intergalactic medium of star-forming dwarf galaxies. Perimeter Institute, Jul. 30, 2025, https://pirsa.org/25070058 

          @misc{ pirsa_PIRSA:25070058,
            doi = {10.48660/25070058},
            url = {https://pirsa.org/25070058},
            author = {Mishra, Nishant},
            keywords = {},
            language = {en},
            title = {The enriched circumgalactic and intergalactic medium of star-forming dwarf galaxies},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {jul},
            note = {PIRSA:25070058 see, \url{https://pirsa.org}}
          }

Nishant Mishra University of Michigan

Talk numberPIRSA:25070058
DOI10.48660/25070058
Collection
Talk Type Conference

Abstract

The circumgalactic/intergalactic medium (CGM/IGM) represents a significant baryon reservoir for sustaining star formation and provides insights into the inflows, outflows, and feedback history of galaxies.  Star-forming dwarf galaxies, with their shallow potential wells, are predicted to drive metal-enriched gas into the CGM/IGM. Therefore, a census of the CGM around dwarf galaxies can provide insights into the stellar feedback. We present highly sensitive absorption-line measurements in quasar sightlines adjacent to 91 isolated dwarf galaxies with a median stellar mass of M_star/M_sun≈8.4 from the Cosmic Ultraviolet Baryon Survey (CUBS). This survey uses HST absorption spectroscopy to access a range of ion transitions from 0.077