A dataset provided by the European Space Agency

Name DDT_cjoblin_3
Title Identification of PAHs with Herschel?


DOI 10.5270/esa-polrrx6
Author joblin, c.
Description One of the key issues in astrochemistry is the identification of polycyclic aromatic hydrocarbons (PAHs). Herschel is a powerful tool to identify gas-phase interstellar PAHs, since these species have bands in the far-IR that are much more specific than the mid-IR ones. The Red Rectangle is the best object to search for these bands and we have obtained deep spectra with SPIRE and PACS. The PACS spectrum shows evidence of structures, which could be PAH bands. However, we were unfortunate to use high density sampling over short-range scans, and this results in "pointing noise" in the spectrum giving structures that are comparable to PAH features. We are asking for new PACS observations of the Red Rectangle using range spectroscopy with Nyquist sampling and 5 repetitions. Using this new data we will be able to reanalyze our high S-N data and determine which structures in the spectra are real astronomical signal and which are instrumental. With our optimized strategy, this observation requires 3.7 hours.
Publication THROES: a caTalogue of HeRschel Observations of Evolved Stars. I. PACS range spectroscopy . Ramos-Medina J. et al. . Astronomy & Astrophysics, Volume 611, id.A41, 38 pp. . 611 . 10.1051\/0004-6361\/201731940 . 2018A&A...611A..41R ,
Instrument PACS_PacsRangeSpec_point
Temporal Coverage 2013-03-18T03:48:04Z/2013-03-18T07:24:46Z
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-09-18T05:22:58Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-09-18T05:22:58Z, DDT_cjoblin_3, SPG v14.2.0. https://doi.org/10.5270/esa-polrrx6