Investigating Protostellar Accretion-Driven Outflows Across the Mass Spectrum: JWST NIRSpec IFU 3-5~$μ$m Spectral Mapping of Five Young Protostars
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2023
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| author | Federman, Samuel Megeath, S. Thomas Rubinstein, Adam E. Gutermuth, Robert Narang, Mayank Tyagi, Himanshu Manoj, P. Anglada, Guillem Atnagulov, Prabhani Beuther, Henrik Bourke, Tyler L. Brunken, Nashanty Garatti, Alessio Caratti o Evans II, Neal J. Fischer, William J. Furlan, Elise Green, Joel Habel, Nolan Hartmann, Lee Karnath, Nicole Klaassen, Pamela Linz, Hendrik Looney, Leslie W. Osorio, Mayra Page, James Muzerolle Pokhrel, Riwaj Rahatgaonkar, Rohan Rocha, Will R. M. Sheehan, Patrick Slavicinska, Katerina Stanke, Thomas Stutz, Amelia M. Tobin, John J. Tychoniec, Lukasz Van Dishoeck, Ewine F. Watson, Dan M. Wolk, Scott Yang, Yao-Lun |
| author_facet | Federman, Samuel Megeath, S. Thomas Rubinstein, Adam E. Gutermuth, Robert Narang, Mayank Tyagi, Himanshu Manoj, P. Anglada, Guillem Atnagulov, Prabhani Beuther, Henrik Bourke, Tyler L. Brunken, Nashanty Garatti, Alessio Caratti o Evans II, Neal J. Fischer, William J. Furlan, Elise Green, Joel Habel, Nolan Hartmann, Lee Karnath, Nicole Klaassen, Pamela Linz, Hendrik Looney, Leslie W. Osorio, Mayra Page, James Muzerolle Pokhrel, Riwaj Rahatgaonkar, Rohan Rocha, Will R. M. Sheehan, Patrick Slavicinska, Katerina Stanke, Thomas Stutz, Amelia M. Tobin, John J. Tychoniec, Lukasz Van Dishoeck, Ewine F. Watson, Dan M. Wolk, Scott Yang, Yao-Lun |
| contents | Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9--28 $μ$m spectral cubes of five young protostars with luminosities of 0.2-10,000 L$_{\odot}$ in their primary accretion phase. This paper introduces the NIRSpec 2.9--5.3 $μ$m data of the inner 840-9000 au with spatial resolutions from 28-300 au. The spectra show rising continuum emission; deep ice absorption; emission from H$_{2}$, 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$_{\odot}$ protostars, two of which are additionally traced in Br-$α$. Knots of [Fe~II] emission are detected toward the most luminous protostar, and knots of [FeII] emission with dynamical times of $< 30$~yrs are found in the jets of the others. While only one jet is traced in H$_2$, knots of H$_2$ and CO are detected in the jets of four protostars. H$_2$ is seen extending through the cavities, showing that they are filled by warm molecular gas. Bright H$_2$ emission is seen along the walls of a single cavity, while in three cavities narrow shells of H$_2$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_03803 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Investigating Protostellar Accretion-Driven Outflows Across the Mass Spectrum: JWST NIRSpec IFU 3-5~$μ$m Spectral Mapping of Five Young Protostars Federman, Samuel Megeath, S. Thomas Rubinstein, Adam E. Gutermuth, Robert Narang, Mayank Tyagi, Himanshu Manoj, P. Anglada, Guillem Atnagulov, Prabhani Beuther, Henrik Bourke, Tyler L. Brunken, Nashanty Garatti, Alessio Caratti o Evans II, Neal J. Fischer, William J. Furlan, Elise Green, Joel Habel, Nolan Hartmann, Lee Karnath, Nicole Klaassen, Pamela Linz, Hendrik Looney, Leslie W. Osorio, Mayra Page, James Muzerolle Pokhrel, Riwaj Rahatgaonkar, Rohan Rocha, Will R. M. Sheehan, Patrick Slavicinska, Katerina Stanke, Thomas Stutz, Amelia M. Tobin, John J. Tychoniec, Lukasz Van Dishoeck, Ewine F. Watson, Dan M. Wolk, Scott Yang, Yao-Lun Solar and Stellar Astrophysics Astrophysics of Galaxies Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9--28 $μ$m spectral cubes of five young protostars with luminosities of 0.2-10,000 L$_{\odot}$ in their primary accretion phase. This paper introduces the NIRSpec 2.9--5.3 $μ$m data of the inner 840-9000 au with spatial resolutions from 28-300 au. The spectra show rising continuum emission; deep ice absorption; emission from H$_{2}$, 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$_{\odot}$ protostars, two of which are additionally traced in Br-$α$. Knots of [Fe~II] emission are detected toward the most luminous protostar, and knots of [FeII] emission with dynamical times of $< 30$~yrs are found in the jets of the others. While only one jet is traced in H$_2$, knots of H$_2$ and CO are detected in the jets of four protostars. H$_2$ is seen extending through the cavities, showing that they are filled by warm molecular gas. Bright H$_2$ emission is seen along the walls of a single cavity, while in three cavities narrow shells of H$_2$ 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. |
| title | Investigating Protostellar Accretion-Driven Outflows Across the Mass Spectrum: JWST NIRSpec IFU 3-5~$μ$m Spectral Mapping of Five Young Protostars |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2310.03803 |