Seminario de Astronomía "Hot-dust evolution in galaxies in the last 10Gyr?"

CHARLISTA:
Dr. Hugo Messias
ALMA-Chile Fellow

TÍTULO:
Hot-dust evolution in galaxies in the last 10Gyr?

RESUMEN:
Although most of the dust-absorbed energy is re-emitted in the far-IR, hot dust (100–1500K) will instead emit thermally in the ~2–30um spectral range. The advantage in studying this dust temperatures relates to the ability to trace the most active regions in galaxies, where dust is nearest to the emitting sources, be that star-formation or AGN dominated. I will present the latest results following-up the work reported in Messias et al. (2013), where we find instead a higher contribution from hot-dust when compared to colder one with increasing galaxy stellar-mass independent of cosmic epoch. I will then present the potential of James Webb Space Telescope in explaining this effect and in the selection of obscured AGN based on what was reported in Messias et al. (2012, 2014).

Rene A. Mendez 
Seminar Coordinator
rmendez@uchile.cl