We propose to observe 40 low-inclination, late-type spiral galaxies from our DiskMass Survey in all six Herschel PACS+SPIRE bands, requiring an allocation of 40.8 hours. The powerful combination of these Herschel data and our existing DiskMass data will allow us to calculate spatially resolved dust-mass and dust-temperature maps using both traditional SED fitting and more advanced radiative transfer modeling through a clumpy (fractal) medium. We will also be able to estimate bolometric corrections to dynamically measured stellar mass-to-light ratios made in the UV and optical; this will provide an unprecedented calibration of stellar-population-synthesis modeling at these wavelengths, which is important for applications at intermediate and high redshift. Finally, we will provide a novel comparison of spatially resolved dust properties with direct measurements of the stellar, atomic-gas, and dark-matter mass densities. We emphasize that, unlike other Herschel Key and GT programs, we use stellar kinematic data (collected over six years using 4m-class optical telescopes) to directly measure the mass surface density of each galaxy disk. Using these measurements of the disk potential and the proposed Herschel observations, our sample will be uniquely qualified to describe the detailed pressure balance in the interstellar medium and its correlation with the measured dust properties, as well as their empirical links to star formation and disk stability. These topics address our core understanding of the evolution and self-regulation of galaxy disks.
Publication
DustPedia: Multiwavelength photometry and imagery of 875 nearby galaxies in 42 ultraviolet-microwave bands . Clark C. J. R. et al. . Astronomy & Astrophysics, Volume 609, id.A37, 30 pp. . 609 . 10.1051\/0004-6361\/201731419 . 2018A&A...609A..37C , Probing the spectral shape of dust emission with the DustPedia galaxy sample . Nersesian Angelos et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2021MNRAS.506.3986N , A nearby galaxy perspective on dust evolution. Scaling relations and constraints on the dust build-up in galaxies with the DustPedia and DGS samples . Galliano Frédéric et al. . Astronomy and Astrophysics . null . null . 2021A&A...649A..18G , Dust emissivity and absorption cross section in DustPedia late-type galaxies . Bianchi S. et al. . Astronomy and Astrophysics . null . null . 2019A&A...631A.102B , DustPedia: the relationships between stars, gas, and dust for galaxies residing in different environments . Davies J. I. et al. . Astronomy and Astrophysics . null . null . 2019A&A...626A..63D , Old and young stellar populations in DustPedia galaxies and their role in dust heating . Nersesian A. et al. . Astronomy and Astrophysics . null . null . 2019A&A...624A..80N , Fraction of bolometric luminosity absorbed by dust in DustPedia galaxies . Bianchi S. et al. . Astronomy & Astrophysics, Volume 620, id.A112, 21 pp. . 620 . 10.1051\/0004-6361\/201833699 . 2018A&A...620A.112B , UV to submillimetre luminosity functions of TNG50 galaxies . Trčka Ana et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2022MNRAS.516.3728T , DustPedia: A Definitive Study of Cosmic Dust in t...he Local Universe . Davies J. I. et al. . Publications of the Astronomical Society of the Pacific, Volume 129, Issue 974, pp. 044102 (2017). . 129 . 10.1088\/1538-3873\/129\/974\/044102 . 2017PASP..129d4102D ,
Instrument
PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_small
Temporal Coverage
2013-02-20T23:25:57Z/2013-04-24T05:06:14Z
Version
SPG v14.2.0
Mission Description
Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
European Space Agency, 2013, Stellar Dynamics Comma Ism Physics Comma And Star-Formation In Disk Galaxies, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-4gc583v
