Cosmic Origins
Location
Virtual
Dates
23 March 202612:00pm ET / 9:00am PT
Community
IR STIG
Type
Seminar
M82 y sus Primas con PRIMA: Spectroscopic Mapping of the M81 Group with FIRESS
Speaker
Rebecca Levy (Space Telescope Science Institute)
Abstract
The far-infrared (FIR) holds the key to understanding the energy balance in the interstellar medium (ISM) and circumgalactic medium (CGM), as FIR spectral lines govern gas heating and cooling. The M81 group is the nearest example of an interacting galaxy system (d=3.6 Mpc) and is expected to merge in the next 1-2 Gyr. This archetypal system has incredibly rich multiwavelength data. JWST, in particular, has enabled unprecedented studies of the starburst and outflow in M82. This system is ideally poised for deep spectroscopic mapping with PRIMA. We propose to map a 100 kpc × 100 kpc (95.5′ × 95.5′) region of the M81 group using the high spectral resolution mode of FIRESS from 24-235μm (R~2000-20000, delta-V~15-150 km/s). This deep survey will ensure robust detections of critical FIR spectral lines in the member galaxies, tidal streams, mysterious features (such as the “Cap”), and halo overall, yielding an unprecedented view of gas heating and cooling over a range of environments. With this large program, PRIMA will deliver an unparalleled legacy dataset.
Seminar Connection
Please visit the P-CAST webpage https://prima.ipac.caltech.edu/page/p-cast for a link to join and to see all of our upcoming speakers!
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