We propose to study dust processing and search for a signature of dust properties associated with massive star formation in a region of the Carina nebula, where a clear variation has been found by mid-infrared spectroscopy. ISO/SWS and Spitzer/IRS observations indicate the presence and variation of the feature around 22 micron in an interface region between the ionized gas and molecular cloud in the Carina nebula. The feature appears to be strongest around the ionization front and significant dust processing is indicated to take place. We propose to study this highly interesting region by PACS SED and line spectroscopy modes and SPIRE spectroscopy. We investigate the variation in the dust size distribution and degree of coagulation and search for possible features associated with the massive star-forming region. The present observation will provide the systematic far-infrared data of the region where clear evidence of dust processing is indicated for the first time and give crucial information on the study of material evolution in the interstellar medium.
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, onaka et al., 2013, 'FIR study of dust processing in the Carina region', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-69j11zp
