| Name: | Sandhya Sanil Kumar |
| Affiliation: | Indian Institute of Space Science and Technology |
| Conference ID : | ASI2024_818 |
| Title : | Probing the Redshift Evolution of Average Extinction Curves in the Universe |
| Authors : | Sandhya Sanil Kumar1, Vikram Khaire1,2 |
| Authors Affiliation: | 1 Indian Institute of Space Science and Technology, Thiruvananthapuram - 695547, India
2 University of California Santa Barbara, Santa Barbara, CA 93106-9530, USA |
| Mode of Presentation: | Poster |
| Abstract Category : | Galaxies and Cosmology |
| Abstract : | From the study of the intrinsic SED of galaxies to probing the cosmic star formation history and the properties of dust grains, extinction curves are an important tool in the astronomer’s repertoire. Within localized regions such as the Milky Way, Small Magellanic Cloud, Large Magellanic Cloud, and nearby starburst galaxies, extinction curves have been studied and established. However, an average extinction law that is applicable to large swaths of the universe in accordance with the cosmological principle has largely remained elusive. In this work, we determine the average extinction law at different redshifts by utilizing multiwavelength galaxy luminosity functions (UV, optical, and IR) spanning a wide range of redshifts (0.14 to 15). We combine this data with the spectral energy distribution of a simple stellar population and measurements of FUV dust attenuation, obtained from the ratio of FUV and IR luminosity densities. Our work focuses on investigating how the average extinction law evolves with redshift and its implications for dust properties. |
