The Herschel Space Observatory view of dust in M81
Cosmology and Nongalactic Astrophysics
2015-05-18 v1
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.
Keywords
Cite
@article{arxiv.1005.1889,
title = {The Herschel Space Observatory view of dust in M81},
author = {G. J. Bendo and C. D. Wilson and M. Pohlen and M. Sauvage and R. Auld and M. Baes and M. J. Barlow and J. J. Bock and A. Boselli and M. Bradford and V. Buat and N. Castro-Rodriguez and P. Chanial and S. Charlot and L. Ciesla and D. L. Clements and A. Cooray and D. Cormier and L. Cortese and J. I. Davies and E. Dwek and S. A. Eales and D. Elbaz and M. Galametz and F. Galliano and W. K. Gear and J. Glenn and H. L. Gomez and M. Griffin and S. Hony and K. G. Isaak and L. R. Levenson and N. Lu and S. Madden and B. O'Halloran and K. Okumura and S. Oliver and M. J. Page and P. Panuzzo and A. Papageorgiou and T. J. Parkin and I. Perez-Fournon and N. Rangwala and E. E. Rigby and H. Roussel and A. Rykala and N. Sacchi and B. Schulz and M. R. P. Schirm and M. W. L. Smith and L. Spinoglio and J. A. Stevens and S. Sundar and M. Symeonidis and M. Trichas and M. Vaccari and L. Vigroux and H. Wozniak and G. S. Wright and W. W. Zeilinger},
journal= {arXiv preprint arXiv:1005.1889},
year = {2015}
}
Comments
Accepted for A & A Herschel special issue