The UV Space Telescope Concept, CETUS
Abstract
The Astro-2010 Panel on Electromagnetic Observations from Space called for a "more capable UV-optical telescope to follow Hubble", and that is the plan for the Probe-class UV space telescope mission concept, CETUS. With its far-UV and near-UV cameras having a 300 sq. arcmin field of view - more than 40 times larger than any UV camera on Hubble - CETUS will be a full, contributing partner to multi-wavelength surveys planned for the 2020's. * How common is extended star formation in E and S0 galaxies? * What does the UV tell us about when and where within a galaxy quenching takes place? * Can we distinguish between the effects of stellar age and dust extinction? With its unprecedented sensitivity in the Lyman UV (100-122 nm), CETUS will make a major survey of galaxies in the local universe and their circumgalactic medium (CGM). * Are the missing baryons in the warm-hot phase of the CGM? * How do the flows of mass and energy in the CGM of galaxies change with stellar mass and environment? * How are the properties a galaxy and its CGM and nearby IGM connected? * Does the CGM promote/suppress star formation? * What does the CGM of local dwarf galaxies tell us about high-redshift dwarf galaxies thought to be responsible for the reionization of the early universe? With its multi-object spectrograph and wide-field camera, CETUS will undertake a massive survey of z~1 galaxies in the rest-frame far-UV. * What are the signs of quenching in z~1-2 galaxies? * How do galaxies of the same stellar mass differ in properties of their stellar population, interstellar medium, ionized nebulae? With its rapid response and high sensitivity, CETUS far-UV and near-UV cameras will follow up on transients discovered by other telescopes. * How are accretion disks regenerated upon the tidal disruption of a star? * How do massive stars die? * What are the UV properties and light curves of LIGO sources? * How do flares in M-dwarfs affect the habitability of planets? With its R=40,000 near-UV spectrograph, CETUS will study very primitive stars in the galaxy to infer the properties of the first stars.
- Publication:
-
American Astronomical Society Meeting Abstracts #233
- Pub Date:
- January 2019
- Bibcode:
- 2019AAS...23315714H