Naadiyah Jagga is a Ph.D. candidate in Astronomy at York University. She did her undergraduate and master's degrees at Leiden Observatory. She is interested in the evolution of galaxies, with focus on the stellar mass of galaxies. Her research, under supervision of Dr. Adam Muzzin, involves creating and analysing spatially resolved maps of galaxies observed by JWST. She is a member of the Canadian NIRISS Unbiased Cluster Survey (CANUCS) program, the JWST Ultradeep Nirspec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) program and co-PI of the JWST Ultimate Medium-band Photometric Survey (JUMPS) program.
Title: Stellar mass growth of galaxies over time with JWST: Spatially Resolved vs Unresolved Photometry
Abstract: A key factor of the evolution of galaxies is to understand the stellar mass growth. My work uses JWST data from the CANUCS + Technicolor program, offering a wide range of filters, to study the bias between unresolved and resolved stellar mass maps for galaxies at low and high redshifts. Previous research has shown that an increase in mass bias is correlated with a higher star formation rate. Galaxies have diverse regions, which means that the star formation history - this defines the stellar populations in a galaxy - should not be treated uniform inside a single aperture. The JWST observations present the rare opportunity to treat different components in the galaxies separately in SED fitting as physical features appear stronger or weaker in certain filters. Results so far have shown that an increase in the negative stellar mass bias is correlated with a higher star formation rate, bluer colours, and a lower stellar mass. Most of the galaxies with a large negative bias seem to have clumps. A positive bias in the stellar mass is correlated with redder and a selection of the galaxies are dusty as well.
Location Information
200 University Avenue West
Waterloo, ON, CA N2L 3G1
