| Name: Balpreet Kaur |
| Affiliation: Inter-University Centre for Astronomy and Astrophysics |
| Conference ID: ASI2026_984 |
| Title: The HI properties of star-forming galaxies at z~1 in the COSMOS field |
| Abstract Type: Invited |
| Abstract Category: Galaxies and Cosmology |
| Author(s) and Co-Author(s) with Affiliation: Balpreet Kaur(Inter-University Centre for Astronomy and Astrophysics, Pune - 411007, India), Nissim Kanekar(National Centre for Radio Astrophysics-Tata Institute of Fundamental Research, Pune - 411007, India), Aditya Chowdhury(Ludwig-Maximilians-Universität, Munich -80539, Germany), Jayaram N. Chengalur(National Centre for Radio Astrophysics-Tata Institute of Fundamental Research, Pune - 411007, India) |
| Abstract: Understanding galaxy evolution critically requires information on the evolution of the neutral gas content of galaxies across cosmic time. Unfortunately, the weakness of the HI 21cm transition makes it difficult to detect HI 21cm emission from individual high-redshift galaxies with current telescopes. However, it is possible to measure the average HI mass of a population of high-z galaxies, which have accurate redshifts and positions, by stacking their redshifted HI 21 cm emission signals. In this talk, I will present results from a deep Giant Metrewave Radio Telescope HI 21cm emission survey of star-forming galaxies at z~1 in the COSMOS field. This survey has yielded only the second detection of the stacked 21 cm emission signal from star-forming galaxies at z~1, and a measurement of the average HI mass of high-z star-forming galaxies. The outstanding multi-wavelength data available for the COSMOS galaxies will allow us to determine the dependence of their average HI properties upon their stellar properties, including the stellar mass, SFR, morphology, etc. |
