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TheHerschelSpace Observatory view of dust in M81
- Source :
- ASTRONOMY & ASTROPHYSICS, Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2010, 518, ⟨10.1051/0004-6361/201014568⟩
- Publication Year :
- 2010
- Publisher :
- EDP Sciences, 2010.
-
Abstract
- We use Herschel Space Observatory data to place observational constraints on the peak and Rayleigh-Jeans slope of dust emission observed at 70-500 microns in the nearby spiral galaxy M81. We find that the ratios of wave bands between 160 and 500 microns are primarily dependent on radius but that the ratio of 70 to 160 micron emission shows no clear dependence on surface brightness or radius. These results along with analyses of the spectral energy distributions imply that the 160-500 micron emission traces 15-30 K dust heated by evolved stars in the bulge and disc whereas the 70 micron emission includes dust heated by the active galactic nucleus and young stars in star forming regions.<br />Accepted for A & A Herschel special issue
- Subjects :
- galaxies: spiral
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Active galactic nucleus
TELESCOPE
H-ALPHA
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
THINGS
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
STAR-FORMATION RATES
individual: M81 [galaxies]
galaxies: individual: M81
Bulge
Astrophysics::Solar and Stellar Astrophysics
Surface brightness
FIELD
Astrophysics::Galaxy Astrophysics
QB
Physics
Spiral galaxy
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
ISM [galaxies]
Spectral density
Astronomy and Astrophysics
Radius
Space observatory
GALAXIES
SPITZER
Stars
spiral [galaxies]
Physics and Astronomy
[SDU]Sciences of the Universe [physics]
Space and Planetary Science
Astrophysics::Earth and Planetary Astrophysics
EMISSION
galaxies: ISM
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- ISSN :
- 14320746 and 00046361
- Volume :
- 518
- Database :
- OpenAIRE
- Journal :
- Astronomy and Astrophysics
- Accession number :
- edsair.doi.dedup.....b199a0ed3f1662ea7254e61d73e0060b
- Full Text :
- https://doi.org/10.1051/0004-6361/201014568