exoALMA I. Science Goals, Project Design and Data Products
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917999813853184 |
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| author | Teague, Richard Benisty, Myriam Facchini, Stefano Fukagawa, Misato Pinte, Christophe Andrews, Sean M. Bae, Jaehan Barraza-Alfaro, Marcelo Cataldi, Gianni Cuello, Nicolás Curone, Pietro Czekala, Ian Fasano, Daniele Flock, Mario Galloway-Sprietsma, Maria Gardner, Charles H. Garg, Himanshi Hall, Cassandra Hammond, Iain Hilder, Thomas Huang, Jane Ilee, John D. Isella, Andrea Izquierdo, Andrés F. Kanagawa, Kazuhiro Lesur, Geoffroy Lodato, Giuseppe Longarini, Cristiano Loomis, Ryan A. Masset, Frédéric Menard, Francois Orihara, Ryuta Price, Daniel J. Rosotti, Giovanni Stadler, Jochen Testi, Leonardo Yen, Hsi-Wei Wafflard-Fernandez, Gaylor Wilner, David J. Winter, Andrew J. Wölfer, Lisa Yoshida, Tomohiro C. Zawadzki, Brianna |
| author_facet | Teague, Richard Benisty, Myriam Facchini, Stefano Fukagawa, Misato Pinte, Christophe Andrews, Sean M. Bae, Jaehan Barraza-Alfaro, Marcelo Cataldi, Gianni Cuello, Nicolás Curone, Pietro Czekala, Ian Fasano, Daniele Flock, Mario Galloway-Sprietsma, Maria Gardner, Charles H. Garg, Himanshi Hall, Cassandra Hammond, Iain Hilder, Thomas Huang, Jane Ilee, John D. Isella, Andrea Izquierdo, Andrés F. Kanagawa, Kazuhiro Lesur, Geoffroy Lodato, Giuseppe Longarini, Cristiano Loomis, Ryan A. Masset, Frédéric Menard, Francois Orihara, Ryuta Price, Daniel J. Rosotti, Giovanni Stadler, Jochen Testi, Leonardo Yen, Hsi-Wei Wafflard-Fernandez, Gaylor Wilner, David J. Winter, Andrew J. Wölfer, Lisa Yoshida, Tomohiro C. Zawadzki, Brianna |
| contents | Planet formation is a hugely dynamic process requiring the transport, concentration and assimilation of gas and dust to form the first planetesimals and cores. With access to extremely high spatial and spectral resolution observations at unprecedented sensitivities, it is now possible to probe the planet forming environment in detail. To this end, the exoALMA Large Program targeted fifteen large protoplanetary disks ranging between ${\sim}1\arcsec$ and ${\sim}7\arcsec$ in radius, and mapped the gas and dust distributions. $^{12}$CO J=3-2, $^{13}$CO J=3-2 and CS J=7-6 molecular emission was imaged at high angular (${\sim}~0\farcs15$) and spectral (${\sim}~100~{\rm m\,s^{-1}}$) resolution, achieving a surface brightness temperature sensitivity of ${\sim}1.5$~K over a single channel, while the 330~GHz continuum emission was imaged at 90~mas resolution and achieved a point source sensitivity of ${\sim}\,40~μ{\rm Jy~beam^{-1}}$. These observations constitute some of the deepest observations of protoplanetary disks to date. Extensive substructure was found in all but one disk, traced by both dust continuum and molecular line emission. In addition, the molecular emission allowed for the velocity structure of the disks to be mapped with excellent precision (uncertainties on the order of $10~{\rm m\,s^{-1}}$), revealing a variety of kinematic perturbations across all sources. From this sample it is clear that, when observed in detail, all disks appear to exhibit physical and dynamical substructure indicative of on-going dynamical processing due to young, embedded planets, large-scale, (magneto-)hydrodynamical instabilities or winds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_18688 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | exoALMA I. Science Goals, Project Design and Data Products Teague, Richard Benisty, Myriam Facchini, Stefano Fukagawa, Misato Pinte, Christophe Andrews, Sean M. Bae, Jaehan Barraza-Alfaro, Marcelo Cataldi, Gianni Cuello, Nicolás Curone, Pietro Czekala, Ian Fasano, Daniele Flock, Mario Galloway-Sprietsma, Maria Gardner, Charles H. Garg, Himanshi Hall, Cassandra Hammond, Iain Hilder, Thomas Huang, Jane Ilee, John D. Isella, Andrea Izquierdo, Andrés F. Kanagawa, Kazuhiro Lesur, Geoffroy Lodato, Giuseppe Longarini, Cristiano Loomis, Ryan A. Masset, Frédéric Menard, Francois Orihara, Ryuta Price, Daniel J. Rosotti, Giovanni Stadler, Jochen Testi, Leonardo Yen, Hsi-Wei Wafflard-Fernandez, Gaylor Wilner, David J. Winter, Andrew J. Wölfer, Lisa Yoshida, Tomohiro C. Zawadzki, Brianna Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Planet formation is a hugely dynamic process requiring the transport, concentration and assimilation of gas and dust to form the first planetesimals and cores. With access to extremely high spatial and spectral resolution observations at unprecedented sensitivities, it is now possible to probe the planet forming environment in detail. To this end, the exoALMA Large Program targeted fifteen large protoplanetary disks ranging between ${\sim}1\arcsec$ and ${\sim}7\arcsec$ in radius, and mapped the gas and dust distributions. $^{12}$CO J=3-2, $^{13}$CO J=3-2 and CS J=7-6 molecular emission was imaged at high angular (${\sim}~0\farcs15$) and spectral (${\sim}~100~{\rm m\,s^{-1}}$) resolution, achieving a surface brightness temperature sensitivity of ${\sim}1.5$~K over a single channel, while the 330~GHz continuum emission was imaged at 90~mas resolution and achieved a point source sensitivity of ${\sim}\,40~μ{\rm Jy~beam^{-1}}$. These observations constitute some of the deepest observations of protoplanetary disks to date. Extensive substructure was found in all but one disk, traced by both dust continuum and molecular line emission. In addition, the molecular emission allowed for the velocity structure of the disks to be mapped with excellent precision (uncertainties on the order of $10~{\rm m\,s^{-1}}$), revealing a variety of kinematic perturbations across all sources. From this sample it is clear that, when observed in detail, all disks appear to exhibit physical and dynamical substructure indicative of on-going dynamical processing due to young, embedded planets, large-scale, (magneto-)hydrodynamical instabilities or winds. |
| title | exoALMA I. Science Goals, Project Design and Data Products |
| topic | Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2504.18688 |