Abstract Details

Name: Himanshu Tyagi
Affiliation: Tata Institute of Fundamental Research
Conference ID: ASI2025_138
Title: IPA: Unveiling a New Era of Protostellar Winds with JWST
Authors: Himanshu Tyagi 1, P. Manoj 1, Mayank Narang 1, 2, Dan M. Watson 3, S. Thomas Megeath 4, Samuel Federman 4, David A. Neufeld 31, Adam E. Rubinstein 3, Robert Gutermuth 5, Alessio Caratti o Garatti 6, Henrik Beuther 7, Tyler L. Bourke 8, Ewine F. Van Dishoeck 9, 10, Neal J. Evans II 11, Guillem Anglada 12, Mayra Osorio 12, Thomas Stanke 10, James Muzerolle 13, Leslie W. Looney 14, 15, Yao-Lun Yang 16, John J. Tobin 15, Pamela Klaassen 17, Nicole Karnath 18, 19, Prabhani Atnagulov 20, Nashanty Brunken 9, William J. Fischer 21, Elise Furlan 22, Joel Green 21, Nolan Habel 23, Lee Hartmann 24, Hendrik Linz 7, 25, Pooneh Nazari 9, Riwaj Pokhrel 26, Rohan Rahatgaonkar 27, Will R. M. Rocha 28, Patrick Sheehan 15, Katerina Slavicinska 9, Amelia M. Stutz 29, Lukasz Tychoniec 30, and Scott Wolk 19
Authors Affiliation: 1 Department of Astronomy and Astrophysics Tata Institute of Fundamental Research Homi Bhabha Road, Colaba, Mumbai 400005, India 2 Academia Sinica Institute of Astronomy & Astrophysics, 11F of Astro-Math Bldg., No.1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan 3 University of Rochester, Rochester, NY, US 4 University of Toledo, Toledo, OH, US 5 University of Massachusetts Amherst, Amherst, MA, US 6 INAF-Osservatorio Astronomico di Capodimonte, IT 7 Max Planck Institute for Astronomy, Heidelberg, Baden Wuerttemberg, DE 8 SKA Observatory, Jodrell Bank, Lower Withington, Macclesfield SK11 9FT, UK 9 Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, NL 10 Max-Planck Institut f¨ur Extraterrestrische Physik, Garching bei M¨unchen, DE 11 Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, Texas 78712-1205, USA 12 Instituto de Astrof´ısica de Andaluc´ıa, CSIC, Glorieta de la Astronom´ıa s/n, E-18008 Granada, ES 13 Space Telescope Science Institute, Baltimore, MD, US 14 Department of Astronomy, University of Illinois, 1002 West Green St, Urbana, IL 61801, USA 15 National Radio Astronomy Observatory, 520 Edgemont Rd., Charlottesville, VA 22903 USA 16 RIKEN Cluster for Pioneering Research, Wako-shi, Saitama, 351-0106, Japan 17 United Kingdom Astronomy Technology Centre, Edinburgh, GB 18 Space Science Institute, Boulder, CO, US 19 Center for Astrophysics Harvard & Smithsonian, Cambridge, MA, US 20 Ritter Astrophysical Research Center, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH, US 21 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, US 22 Caltech/IPAC, Pasadena, CA, US 23 Jet Propulsion Laboratory, Pasadena, CA, US 24 University of Michigan, Ann Arbor, MI, US 25 Friedrich-Schiller-Universit¨at, Jena, Th¨uringen, DE 26 Ritter Astrophysical Research Center, Dept. of Physics and Astronomy, University of Toledo, Toledo, OH, US, 43606 27 Gemini South Observatory, La Serena, CL 28 Laboratory for Astrophysics, Leiden Observatory, Universiteit Leiden, Leiden, Zuid-Holland, NL 29 Departamento de Astronom´ıa, Universidad de Concepci´on,Casilla 160-C, Concepci´on, Chile 30 European Southern Observatory, Garching bei M¨unchen, DE 31 William H. Miller III Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD, USA
Mode of Presentation: Poster
Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way
Abstract: Protostellar jets and winds play a crucial role in the evolution of protostellar systems by removing angular momentum and enabling accretion, while also regulating star formation rates through feedback on their parent molecular clouds. However, the mechanisms driving jet and wind formation, as well as their feedback effects, remain poorly understood. We will present the latest results from the JWST Cycle 1 GO program Investigating Protostellar Accretion (IPA) that observed five Class 0 protostars across a broad luminosity range (0.2 to 10,000 Lsun). Our high angular resolution spectral imaging from JWST offers unprecedented insights into the morphology, kinematics, and dynamics of these wide-angle winds traced by the molecular hydrogen (H_2) emission. We observe complex emission structures, with JWST revealing a wide hourglass-shaped outer boundary in multiple ro-vibrational and pure-rotational H_2 lines. Complementary ALMA 12CO observations, which trace the broader wind cavities, align with JWST's scattered light data, showing that H_2 winds are more narrowly confined than the low-J CO winds—indicating that H_2 likely traces disk winds. Additionally, our findings suggest that the wide-angle winds are not driven by atomic jets. We will discuss the implications of these results for our understanding of protostellar wind launching mechanisms and their impact on molecular clouds.