HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) in the Magellanic Clouds

Details HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) in the Magellanic Clouds HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) in the Magellanic Clouds

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545922m&link_type=abstract

American Astronomical Society, AAS Meeting #215, #459.22; Bulletin of the American Astronomical Society, Vol. 42, p.489

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Scientific paper

We will perform a uniform survey of the Large Magellanic Cloud (LMC, 8x8.5 degrees), Small Magellanic Cloud (SMC, 5x5 degrees), and the Magellanic bridge (4x3 degrees) in SPIRE 250, 350, 500 micron and PACS 100 and 160 micron bands in order to produce a HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE), the interstellar medium (ISM) and massive stars. Herschel images will provide key insights into the life cycle of galaxies because the far-infrared and submm emission from dust grains is an effective tracer of the coldest ISM dust, the most deeply embedded young stellar objects (YSOs), and the dust ejected over the lifetime of massive stars. The ISM dust map will directly measure dust on a scale size of individual regions ( 10 pc, 5-20 K) with column densities >0.85x1021 and >6x1021 Hatoms cm-2 for the LMC and SMC, respectively. Dust emission per beam will be detected for regions with >0.1 Msun at 25 K, >5 Msun of 10 K. HERITAGE will complete 1) the census of massive YSOs down to >4 Msun Class 0 sources and 2) the inventory of dust injected into the ISM by massive evolved stars and supernova remnants (SNRs). The variation in dust properties discerned from the dust maps of SNRs will quantify the effect of shocks on the interstellar grain size distribution. HERITAGE will create an archival data set that promises a lasting legacy to match current LMC and SMC surveys at other wavelengths. HERITAGE will bridge the gap between Herschel studies of the Milky Way and those of nearby galaxies and provide a template for high red shift galaxies.
This project is supported by the NASA Herschel Science Center JPL contract 1381522.

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