GGD 37: An Extreme Protostellar Outflow

GGD 37: An Extreme Protostellar Outflow

We present the first Spitzer-IRS spectral maps of the Herbig-Haro flow GGD 37 detected in lines of [Ne III], [O IV], [Ar III], and [Ne V]. The detection of extended [O IV] (55 eV) and some extended emission in [Ne V] (97 eV) indicates a shock temperature in excess of 100,000 K, in agreement with X-r...

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Veröffentlicht in:arXiv.org 2010-11
Hauptverfasser: Green, J D, Watson, D M, Bergin, E, Maret, S, Melnick, G, Sonnentrucker, P, Tolls, V, Sargent, B A, rest, W J, Kim, K H, Raines, S N
Format: Artikel
Sprache:eng
Schlagworte:
Ionization
Outflow
Physics - Astrophysics of Galaxies
Protostars
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Zusammenfassung:We present the first Spitzer-IRS spectral maps of the Herbig-Haro flow GGD 37 detected in lines of [Ne III], [O IV], [Ar III], and [Ne V]. The detection of extended [O IV] (55 eV) and some extended emission in [Ne V] (97 eV) indicates a shock temperature in excess of 100,000 K, in agreement with X-ray observations, and a shock speed in excess of 200 km s-1. The presence of an extended pho- toionization or collisional ionization region indicates that GGD 37 is a highly unusual protostellar outflow.
ISSN:2331-8422
DOI:10.48550/arxiv.1012.0029