The interstellar gas seen in the mid- and far-infrared: The promise of SPICA Space Telescope - Astrophysics > Astrophysics of GalaxiesReport as inadecuate




The interstellar gas seen in the mid- and far-infrared: The promise of SPICA Space Telescope - Astrophysics > Astrophysics of Galaxies - Download this document for free, or read online. Document in PDF available to download.

Abstract: The mid- and far-IR spectral ranges are critical windows to characterize thephysical and chemical processes that transform the interstellar gas and dustinto stars and planets. Sources in the earliest phases of star formation and inthe latest stages of stellar evolution release most of their energy at thesewavelengths. Besides, the mid- and far-IR ranges provide key spectraldiagnostics of the gas chemistry water, light hydrides, organic species

.,of the prevailing physical conditions H2, atomic fine structure lines

., andof the dust mineral and ice composition that can not be observed fromground-based telescopes. With the launch of JAXA-s SPICA telescope,uninterrupted studies in the mid- and far-IR will be possible since ESA-sInfrared Space Observatory 1995. In particular, SAFARI will provide fullaccess to the 34-210um waveband through several detector arrays and flexibleobserving modes from broadband photometry to medium resolution spectroscopywith R~3,000 at 63um, and reaching very high line sensitivities ~10^-19Wm^-2, 5sigma-1hr within a large FOV ~2-x2-. Compared to previous far-IRinstruments ISO-LWS, Akari-FIS, Spitzer-MIPS and Herschel-PACS, SAFARI willprovide a superior way to obtain fully-sampled spectro-images and continuousSEDs of very faint and extended ISM sources in a wavelength domain notaccessible to JWST or ALMA. The much increased sensitivity of SPICA will allowus to step forward and reveal not only the chemical complexity in the localISM, but also in the extragalactic ISM routinely.



Author: Javier R. Goicoechea, Jose Cernicharo

Source: https://arxiv.org/







Related documents