Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 1K045

Probing the hidden warm gas in protostellar outflows with Herschel

Santangelo, Gina (INAF-Osservatorio Astronomico di Roma, Monte Porzio Catone)
Nisini, Brunella (INAF-Osservatorio Astronomico di Roma, Monte Porzio Catone)
Antoniucci, Simone (INAF-Osservatorio Astronomico di Roma, Monte Porzio Catone)
Codella , Claudio (INAF-Osservatorio Astrofisico di Arcetri, Firenze)
Lorenzani, Andrea (INAF-Osservatorio Astrofisico di Arcetri, Firenze)
Giannini, Teresa (INAF-Osservatorio Astronomico di Roma, Monte Porzio Catone)
Benedettini, Milena (INAF- Istituto di Astrofisica e planetologia Spaziale, Rome)
Cabrit, Sylvie (Observatoire de Paris, Paris)
Liseau, Rene\' (Chalmers University of Technology, Onsala)
Tafalla, Mario (IGN Observatorio Astṛnomico Nacional, Madrid)
Dishoeck, Ewine (Leiden Observatory, Leiden)

Cooling of radiative shocks along the dense outflows driven by young protostars occurs through emission of mid- and far-IR lines of abundant species, such as H2, CO, H2O and [OI]. A detailed account for this emission has been only recently possible thanks to the space-born facilities like Spitzer and Herschel. Multi-line Herschel-PACS and HIFI observations of several class 0 outflows have been conducted as part of the Key Program WISH (Water In Star forming regions with Herschel, P.I. E. van Dishoeck) and of two guest observer programs (OT1_BNISINI_1 and OT2_GSANTANG_1). We present here some of the results obtained from these observations in the two well known outflows L1448 and NGC1333-IRAS4. In these outflows the spatial distribution of the different species is compared and the properties of the shocks at the origin of the observed emission discussed. In addition, we also present maps of the [OI] 63μm line in several flows, which reveal for the first time the presence of embedded fast atomic jets associated with the large scale outflows.

Click here to view poster PDF