Water in star-forming regions with Herschel (WISH). II. Evolution of 557 GHz 110-101 emission in low-mass protostars

By L. Kristensen, E. Dishoeck, E. Bergin, R. Visser, U. Yildiz, I. Jose-Garcia, J. Jørgensen, G. Herczeg, D. Johnstone, S. Wampfler and 15 more. 2012

206 citations recorded by the source corpus.

Context. Water is a key tracer of dynamics and chemistry in low-mass star-forming regions, but spectrally resolved observations have so far been limited in sensitivity and angular resolution, and only data from the brightest low-mass protostars have been published. Aims. The first systematic survey of spectrally resolved water emission in 29 low-mass (L 10 km s(-1)). The water abundance in the outer cold envelope is low, greater than or similar to 10(-10). The different H2O profile components show a clear evolutionary trend: in the younger Class 0 sources the emission is dominated by outflow components originating inside an infalling envelope. When large-scale infall diminishes during the Class I phase, the outflow weakens and H2O emission all but disappears.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/18ba8df46de65e4644ce2ad9c92f59ac56e87f58

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In Astronomy and Astrophysics

1. P. Caselli
2. M. Tafalla
3. E. Bergin
4. Cecilia Ceccarelli
5. Y. Aikawa
6. C. Walmsley
7. Simon Bruderer
8. E. Dishoeck

Citations in the corpus

• A Keplerian disk around a Class 0 source: ALMA observations of VLA1623A (2013, background): “(1) Choi et al. (2010); (2) Tobin et al. (2012); (3) this work; (4) Froebrich (2005); (5) Kristensen et al. (2012); (6) Murillo & Lai (2013). question of how disks are formed in the early stages of protostellar evolution.”
• Our astrochemical heritage (2012, background): “re recent observations obtained with Herschel, with a much better spatial and spectral resolution, have conrmed that rst claim with an increased reliability and in a larger number of sources ([252]; [250]; [440]; [113]). If, on the one hand, these observations conrm the old theoretical predictions t”
• FIRST DETECTION OF WATER VAPOR IN A PRE-STELLAR CORE (2012, background): “Inverse P-Cygni profiles have also been found in 6 out of 15 Class 0 objects (Kristensen et al. 2012), highlighting water’s ability to pick up infall motion along the line of sight.”