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- Seminars and Workshops
- Institute of Astronomy and Astrophysics
- Location
R1203 of the Astronomy-Mathematics Building, National Taiwan University
- Speaker Name
Karin Sandstrom [UCSD]
- State
Definitive
- Url
2023-12-20 14:20 - 15:20
Colloquium
A High Resolution View of the Interstellar Medium in Nearby Galaxies with JWST
Abstract
JWST observations of nearby galaxies reveal the physics of the interstellar medium and star formation in stunning detail (5-50 pc resolution). In JWST Cycles 1 and 2, PHANGS-JWST Treasury programs will image essentially all of the ALMA-accessible, massive, star forming galaxies within 17 Mpc (where 1 arcsec corresponds to <50 pc resolution at 21 microns) with NIRCam and MIRI. These targets have deep ancillary data from ALMA and Hubble, along with VLT-MUSE and Keck-KCWI for a subset of the targets. I will present results from the PHANGS-JWST surveys, showcasing the wealth of detail JWST provides—embedded star clusters, pervasive filamentary structure in the ISM, and a multitude of bubbles and shells. I will highlight some of the key results from JWST Cycle 1, including new insights into the behavior of polycyclic aromatic hydrocarbons; characterization of filaments and bubbles; the relationship between mid-IR emission, gas, and star formation; discovery of deeply embedded clusters; constraints on stellar feedback and molecular cloud lifetimes; and more.
