Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5 μm Spectral Mapping of Five Young Protostars
The Astrophysical Journal, vol. 966, pp. 41
Abstract
Abstract Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9–28 μm spectral cubes of five young protostars with luminosities of 0.2–10,000 L ⊙ in their primary accretion phase. This paper introduces the NIRSpec 2.9–5.3 μm data of the inner 840–9000 au with spatial resolutions from 28 to 300 au. The spectra show rising continuum emission; deep ice absorption; emission from H2, H i, and [Fe ii]; and the CO fundamental series in emission and absorption. Maps of the continuum emission show scattered light cavities for all five protostars. In the cavities, collimated jets are detected in [Fe ii] for the four <320 L ⊙ protostars, two of which are additionally traced in Brα. Knots of [Fe ii] emission are detected toward the most luminous protostar, and knots of [Fe ii] emission with dynamical times of <30 yr are found in the jets of the others. While only one jet is traced in H2, knots of H2 and CO are detected in the jets of four protostars. H2 is seen extending through the cavities, showing that they are filled by warm molecular gas. Bright H2 emission is seen along the walls of a single cavity, while in three cavities narrow shells of H2 emission are found, one of which has an [Fe ii] knot at its apex. These data show cavities containing collimated jets traced in atomic/ionic gas surrounded by warm molecular gas in a wide-angle wind and/or gas accelerated by bow shocks in the jets.
Authors 39
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Affiliation as printed
Ritter Astrophysical Research Center, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
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Affiliation as printed
Ritter Astrophysical Research Center, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
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Affiliation as printed
University of Rochester, Rochester, NY 14627, USA
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University of Massachusetts Amherst
Affiliation as printed
University of Massachusetts Amherst, Amherst, MA 01003, USA
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Tata Institute of Fundamental Research · Institute of Astronomy and Astrophysics, Academia Sinica
Affiliation as printed
Institute of Astronomy and Astrophysics Academia Sinica, Taiepei, Taiwan
Tata Institute of Fundamental Research, Mumbai, Maharashtra, India
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Tata Institute of Fundamental Research
Affiliation as printed
Tata Institute of Fundamental Research, Mumbai, Maharashtra, India
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Tata Institute of Fundamental Research
Affiliation as printed
Tata Institute of Fundamental Research, Mumbai, Maharashtra, India
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Instituto de Astrofísica de Andalucía
Affiliation as printed
Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, E-18008 Granada, Spain
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Affiliation as printed
Ritter Astrophysical Research Center, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
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Max Planck Institute for Astronomy
Affiliation as printed
Max Planck Institute for Astronomy, Heidelberg, Baden Wuerttemberg, Germany
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Affiliation as printed
SKA Observatory, Jodrell Bank, Lower Withington, Macclesfield SK11 9FT, UK
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Leiden University · Leiden Observatory
Affiliation as printed
Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, The Netherlands
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Astronomical Observatory of Capodimonte · National Institute for Astrophysics
Affiliation as printed
INAF-Osservatorio Astronomico di Capodimonte, Italy
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The University of Texas at Austin
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Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA
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Space Telescope Science Institute
Affiliation as printed
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
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California Institute of Technology · Infrared Processing and Analysis Center
Affiliation as printed
Caltech/IPAC, Pasadena, CA 91125, USA
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Space Telescope Science Institute
Affiliation as printed
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
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Affiliation as printed
Jet Propulsion Laboratory, Pasadena, CA 91011, USA
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Affiliation as printed
University of Michigan, Ann Arbor, MI 48109, USA
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Space Science Institute · Center for Astrophysics Harvard & Smithsonian
Affiliation as printed
Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA 02138, USA
Space Science Institute, Boulder, CO 80301, USA
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UK Astronomy Technology Centre
Affiliation as printed
United Kingdom Astronomy Technology Centre, Edinburgh, UK
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Max Planck Institute for Astronomy · Friedrich Schiller University Jena
Affiliation as printed
AG Analytische Mineralogie, Friedrich-Schiller-Universität, Jena,Thüringen, Germany
Max Planck Institute for Astronomy, Heidelberg, Baden Wuerttemberg, Germany
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University of Illinois Urbana-Champaign · National Radio Astronomy Observatory
Affiliation as printed
Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801, USA
National Radio Astronomy Observatory, Charlottesville, VA 22903, USA
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Instituto de Astrofísica de Andalucía
Affiliation as printed
Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, E-18008 Granada, Spain
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Space Telescope Science Institute
Affiliation as printed
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
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Leiden University · Leiden Observatory
Affiliation as printed
Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, The Netherlands
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Affiliation as printed
Ritter Astrophysical Research Center, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH 43606, USA
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International Gemini Observatory
Affiliation as printed
Gemini South Observatory, La Serena, Chile
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Leiden University · Leiden Observatory
Affiliation as printed
Laboratory for Astrophysics, Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, The Netherlands
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Affiliation as printed
Northwestern University, Evanston, IL 60208, USA
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Leiden University · Leiden Observatory
Affiliation as printed
Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, The Netherlands
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Max Planck Institute for Extraterrestrial Physics
Affiliation as printed
Max-Planck Institut für Extraterrestrische Physik, Garching bei München, Germany
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Affiliation as printed
Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, Concepción, Chile
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National Radio Astronomy Observatory
Affiliation as printed
National Radio Astronomy Observatory, Charlottesville, VA 22903, USA
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Leiden University · Leiden Observatory
Affiliation as printed
Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, The Netherlands
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Leiden University · Max Planck Institute for Extraterrestrial Physics · Leiden Observatory
Affiliation as printed
Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, The Netherlands
Max-Planck Institut für Extraterrestrische Physik, Garching bei München, Germany
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Affiliation as printed
University of Rochester, Rochester, NY 14627, USA
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Center for Astrophysics Harvard & Smithsonian
Affiliation as printed
Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA 02138, USA
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Affiliation as printed
Star and Planet Formation Laboratory, RIKEN Cluster for Pioneering Research, Wako, Saitama 351-0198, Japan
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