Back to Search
Start Over
The infrared signatures of very small grains in the Universe seen by JWST
- Source :
- SF2A-2015: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, SF2A-2015: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, Jan 2015, paris, France. pp.97-100
- Publication Year :
- 2015
- Publisher :
- arXiv, 2015.
-
Abstract
- The near- and mid-IR spectrum of many astronomical objects is dominated by emission bands due to UV-excited polycyclic aromatic hydrocarbons (PAH) and evaporating very small grains (eVSG). Previous studies with the ISO, Spitzer and AKARI space telescopes have shown that the spectral variations of these features are directly related to the local physical conditions that induce a photo-chemical evolution of the band carriers. Because of the limited sensitivity and spatial resolution, these studies have focused mainly on galactic star-forming regions. We discuss how the advent of JWST will allow to extend these studies to previously unresolved sources such as near-by galaxies, and how the analysis of the infrared signatures of PAHs and eVSGs can be used to determine their physical conditions and chemical composition.<br />Comment: To appear in the Proceedings of the annual meeting of the French society of astronomy and astrophysics (SF2A 2015)
- Subjects :
- Astrophysics of Galaxies (astro-ph.GA)
FOS: Physical sciences
Astrophysics::Earth and Planetary Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Photon-dominated regions
Polycyclic Aromatic Hydrocarbons
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Astrophysics - Astrophysics of Galaxies
ComputingMilieux_MISCELLANEOUS
Astrophysics::Galaxy Astrophysics
James Webb Space Telescope
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- SF2A-2015: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, SF2A-2015: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, Jan 2015, paris, France. pp.97-100
- Accession number :
- edsair.doi.dedup.....f1aac54385e33cad3749212fa40edb2c
- Full Text :
- https://doi.org/10.48550/arxiv.1510.02590