| Name | GT1_okrause_4 |
| Title | Peering into the Dust: The Far-IR Emission in M31 at GMC-Resolution |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342211604&instrument_name=SPIRE\/PACS parallel&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-n59trbs |
| Author | European Space Agency |
| Description | We propose to image M31 (3x1deg) with PACS and SPIRE in slow parallel mode to understand the dust heating processes and efficiencies in normal spiral galaxies. Our observations will provide a unique deep and panchromatic 70,100,160, 250, 350 and 500 micron view of the inner stellar disk of M31 at the highest possible spatial resolution with Herschel. Combined with Spitzer 8 and 24 micron data, this imaging will provide a detailed map of the thermal-IR SED at a resolution unparalleled for any other large galaxy. The 6-18 arcsec spatial resolution of Herschel at 70-250 micron corresponds to 20-60 pc at the distance of M31 and matches the scales of molecular clouds complexes (GMCs; virgul 40 pc) as well as of HII regions and clusters thereof (about 10-50 pc). Existing GALEX and optical data, as well as upcoming 900 orbit HST imaging will provide us with an unprecedented, resolved picture of all stellar populations younger than virgul200 Myrs, which should encompass much of the r^ant dust heating sources at scales of a few to a few 10 parsecs. With such information on both the thermal state of the dust and on the heating sources in hand, our SED modelling can then be used to understand over what length scales and with what efficiency stars heat the dust. The results will also serve as a local high resolution calibration of Herschel data on more distant galaxies such as from the KINGFISH OT key project. This proposal is part of a coordinated effort to image M31 and its surroundings: Here we aim on sensitive 70-250 micron coverage at the highest spatial resolution for the bright inner stellar disk while the diffuse outer cold dust envelope including the companion NGC205 are the target of a second proposal by Fritz et al. For the analysis of extended very cold dust emission, the SPIRE data will be provided collaboratively to the other team. |
| Publication | Calibrating Star Formation Rate Prescriptions at Different Scales (10 pc–1 kpc) in M31 . Tomičić Neven et al. . The Astrophysical Journal, Volume 873, Issue 1, article id. 3, 26 pp. (2019). . 873 . 10.3847\/1538-4357\/ab03ce . 2019ApJ...873....3T , Investigating variations in the dust emissivity index in the Andromeda Galaxy . Athikkat-Eknath G. et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2022MNRAS.511.5287A , The heating of dust by old stellar populations in the bulge of M31 . Groves Brent et al. . Monthly Notices of the Royal Astronomical Society, Volume 426, Issue 2, pp. 892-902. . 426 . 10.1111\/j.1365-2966.2012.21696.x . 2012MNRAS.426..892G , Star formation laws in the Andromeda galaxy: gas, stars, metals and the surface density of star formation . Rahmani S. et al. . Monthly Notices of the Royal Astronomical Society, Volume 456, Issue 4, p.4128-4144 . 456 . 10.1093\/mnras\/stv2951 . 2016MNRAS.456.4128R , Attenuation Modified by DIG and Dust as Seen in M31 . Tomičić Neven et al. . The Astrophysical Journal, Volume 844, Issue 2, article id. 155, 17 pp. (2017). . 844 . 10.3847\/1538-4357\/aa7b30 . 2017ApJ...844..155T , Searching for anomalous microwave emission in nearby galaxies. K-band observations with the Sardinia Radio Telescope . Bianchi S. et al. . Astronomy and Astrophysics . null . null . 2022A&A...658L...8B , The Resolved Distributions of Dust Mass and Temperature in Local Group Galaxies . Utomo Dyas et al. . The Astrophysical Journal . null . null . 2019ApJ...874..141U , The Quest for the Missing Dust. I. Res... |
| Instrument | SPIRE\/PACS parallel_SpirePacsParallel_ |
| Temporal Coverage | 2010-12-25T17:35:48Z/2010-12-27T06:23:45Z |
| 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. |
| Creator Contact | https://support.cosmos.esa.int/h®erschel/ |
| Date Published | 2011-12-15T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2011, Peering Into The Dust: The Far-Ir Emission In M31 At Gmc-Resolution, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-n59trbs |