FAUST XXX: Dust enhancement in the young binary L1551 IRS 5
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| Autores principales: | , , , , , , , , , , , , , , , , , , , |
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2025
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| author | Cuello, Nicolás Bianchi, Eleonora Ménard, François Loinard, Laurent Garnica, Ricardo Hernández Durán, Aurora Ceccarelli, Cecilia Maureira, María José Chandler, Claire J. Codella, Claudio Sakai, Nami Podio, Linda Sabatini, Giovanni Chahine, Layal de Simone, Marta Fedele, Davide Johnstone, Doug Hanawa, Tomoyuki Jiménez-Serra, Izaskun Yamamoto, Satoshi |
| author_facet | Cuello, Nicolás Bianchi, Eleonora Ménard, François Loinard, Laurent Garnica, Ricardo Hernández Durán, Aurora Ceccarelli, Cecilia Maureira, María José Chandler, Claire J. Codella, Claudio Sakai, Nami Podio, Linda Sabatini, Giovanni Chahine, Layal de Simone, Marta Fedele, Davide Johnstone, Doug Hanawa, Tomoyuki Jiménez-Serra, Izaskun Yamamoto, Satoshi |
| contents | Young binary stars with discs provide unique laboratories to study the earliest stages of planet formation in star-forming environments. The detection of substructure in discs around Class I protostars challenges current models of disc evolution, suggesting that planets may form earlier than previously expected ($<1$ Myr). In the context of the ALMA Large Program FAUST, we present observations of the circumbinary disc (CBD) around the young binary system L1551 IRS 5. The CBD exhibits two prominent over-densities in the continuum emission at the edge of the cavity, with the Northern over-density being about 20% brighter than the Southern one. By analysing the disc morphology and kinematics of L1551 IRS 5, we delineate dynamical constraints on the binary's orbital parameters. Additionally, we present 3D hydrodynamical models of the CBD to predict both the dust and the gas surface densities. Then, we compare the resulting synthetic observations with ALMA observations of the continuum emission at 1.3 mm and the C$^{18}$O line emission. Our analysis suggests that the density enhancements observed with ALMA in L1551 IRS 5 can be caused by interactions between the binary stars and the CBD, leading to dust concentration within the disc. We conclude that the observed over-density corresponds to a location where could potentially grow under favourable conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10486 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | FAUST XXX: Dust enhancement in the young binary L1551 IRS 5 Cuello, Nicolás Bianchi, Eleonora Ménard, François Loinard, Laurent Garnica, Ricardo Hernández Durán, Aurora Ceccarelli, Cecilia Maureira, María José Chandler, Claire J. Codella, Claudio Sakai, Nami Podio, Linda Sabatini, Giovanni Chahine, Layal de Simone, Marta Fedele, Davide Johnstone, Doug Hanawa, Tomoyuki Jiménez-Serra, Izaskun Yamamoto, Satoshi Solar and Stellar Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies Young binary stars with discs provide unique laboratories to study the earliest stages of planet formation in star-forming environments. The detection of substructure in discs around Class I protostars challenges current models of disc evolution, suggesting that planets may form earlier than previously expected ($<1$ Myr). In the context of the ALMA Large Program FAUST, we present observations of the circumbinary disc (CBD) around the young binary system L1551 IRS 5. The CBD exhibits two prominent over-densities in the continuum emission at the edge of the cavity, with the Northern over-density being about 20% brighter than the Southern one. By analysing the disc morphology and kinematics of L1551 IRS 5, we delineate dynamical constraints on the binary's orbital parameters. Additionally, we present 3D hydrodynamical models of the CBD to predict both the dust and the gas surface densities. Then, we compare the resulting synthetic observations with ALMA observations of the continuum emission at 1.3 mm and the C$^{18}$O line emission. Our analysis suggests that the density enhancements observed with ALMA in L1551 IRS 5 can be caused by interactions between the binary stars and the CBD, leading to dust concentration within the disc. We conclude that the observed over-density corresponds to a location where could potentially grow under favourable conditions. |
| title | FAUST XXX: Dust enhancement in the young binary L1551 IRS 5 |
| topic | Solar and Stellar Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2512.10486 |