Giannini, T.; Lorenzotti, D.; Benedettini, M.; Nisini, B.; Saraceno, P.; Tommasi, E.; Smith, H. A. and White, G. J.
(1998).
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| URL: | http://www.aspbooks.org/publications/132/350.pdf |
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Abstract
We present the far infrared spectra of the R CrA star forming region obtained with ISO-LWS. We collected a pointed observation on the Herbig Ae star R CrA and a raster scan covering the surrounding region, where HH100 (with its exciting source) and the pre-Main Sequence star T CrA are located. The OI 63μm and the CII 158μm lines have been detected in all the pointed positions, with a ratio consistent with PDR excitation. CO rotational lines (between Jup=14 and Jup=19) are detected on R CrA; from their intensities we derived, using a LVG model, the density and temperature of the emitting region. Other molecular transitions (OH and H2O) have been detected on the investigated objects; the derived cooling of all the molecular species is in agreement with C-shock as the likely excitation mechanism. The continuum emission of R CrA peaks around 100μm (as expected for a Herbig star) while the other sources (T CrA, HH100) show increasing continua up to ~200μm, indicating that they are probably less evolved sources.
| Item Type: | Conference Item |
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| Copyright Holders: | 1998 Astronomical Society of the Pacific |
| Extra Information: | Star Formation with the Infrared Space Observatory (ISO)
ASP Conference Series, Vol. 132, 1998 J. L. Yun, and R. Liseau, eds. Print ISBN: 1-886733-52-X e-Book ISBN: 978-1-58381-468-0 pp.350-353 |
| Academic Unit/Department: | Science > Physical Sciences |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Related URLs: | |
| Item ID: | 32672 |
| Depositing User: | Glenn White |
| Date Deposited: | 16 Mar 2012 09:54 |
| Last Modified: | 17 Mar 2012 00:06 |
| URI: | http://oro.open.ac.uk/id/eprint/32672 |
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