Abstract Details
| Name: Divakara Mayya |
| Affiliation: Instituto Nacional de Astrofisica Optica y Electronica (INAOE) |
| Conference ID: ASI2026_522 |
| Title: Resolved stellar population studies of nearby galaxies using the James Webb Space Telescope |
| Abstract Type: Oral |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: Divakara Mayya(INAOE, Puebla - 72840 Mexico), Avinash Chandrakumar(INAOE, Puebla - 72840 Mexico), Alessandro Bressan(SISSA, Trieste, Italy), Jairo Alzate(CEFCA, Teruel, Spain), Leo Girardi(INAF, Padova, India), Shaunak Mishra(Observatoire de Paris, Paris, France) |
| Abstract: Most of our current understanding of nearby galaxies have come through the analysis of light integrated over its constituent stars with the use of the technique of stellar population synthesis. Thanks to the unprecedented spatial resolution and sensitivity at near infrared wavelengths offered by the James Webb Space Telescope (JWST), it is now possible to study the nearby galaxies up to a distance of at least 10 Mpc using the classical technique of colour magnitude diagrams (CMDs) of its constituent stars. The CMD technique is able to discern the ages and metallicities of stellar populations over the entire possible ranges of these values without the effects of degeneracy that normally complicates analysis using the integrated data. We have used the CMD technique to obtain the ages and metallicities of all its prominent stellar populations over kiloparsec square areas in a sample of nearby spiral and irregular galaxies. The relatively large Field of View of JWST NIRCam instrument has enabled us to construct the radial gradient of ages and metallicities, which has paved the way to understand the building up of galaxies over the Hubble time. In the talk I will review the progress that has been made in this field from all available JWST data on nearby galaxies. |