|Oxygen abundances in carbon-type Wolf-Rayet stars from PACS scan spectroscopy
|This is a resubmitted priority 2 OT1 programme to scan [OIII] 88micron with PACS for a sample of Milky Way carbon and oxygen sequence Wolf-Rayet stars. The proposed observations, requiring 7.7hr will: (i) enable reliable oxygen abundances to be determined for WC stars for the first time, testing evolutionary predictions; (ii) refine the degree of clumping in the outer stellar winds of these stars derived from existing ISO-SWS or Spitzer-IRS datasets. The requested line spectra are unique to PACS and cannot be acquired with another instrument for these targets.
|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.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2013, OT2_pcrowthe_2, SPG v14.2.0. https://doi.org/10.5270/esa-rg3i0z4