Planet formation on solar system scales
Abstract
Giant planets are often regarded as primordial protoplanetary "architects". Their formation and interactions with planetesimals and other planets during and after the protoplanetary disc phase are key to setting the blueprint of the planetary systems we observe today. Catching nascent gas giants is our best opportunity to uncover these crucial steps in the planet formation process and shed light on the origins of our own solar system. Over the last decade, ALMA has revolutionised our understanding of planet formation; still, detecting signatures of Jupiter-like planets has remained out of reach. We argue that ALMA2040, a next-generation sub(mm) interferometer with improved sensitivity (×25 in the continuum and ×10 for line emission) and a ×3 higher angular resolution compared to ALMA, will be sensitive to (sub)mm emission around a forming Jupiter-like planet orbiting a Sun-like star within 150 pc and allow kinematically characterising interactions of Jovian and sub-Jovian planets with their natal disc. ALMA2040 will provide unique and unprecedented insights into how gas giants carve gaps, accrete material, form satellites, and affect the architectures of their co-evolving planetary systems.
Related
- Beyond Pebble Isolation: Diverse Pathways to Giant Planet Formation Across Stellar and Orbital Scales
- Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903
- Signatures of an Earth-class Planet in the Distant Solar System
- Chemistry on solar system scales
- Planetary system architectures in the final stages of planet formation
BibTeX
@misc{zagaria2026planet,
title = {{Planet formation on solar system scales}},
author = {Francesco Zagaria and Andrés F. Izquierdo and Jaehan Bae and Philippine Griveaud and Richard A. Booth and Pietro Curone and Anders Johansen and Stefano Facchini and Myriam Benisty and Tilman Birnstiel and Alice Booth and Ondřej Chrenko and Ian Czekala and Kiyoaki Doi and Greta Guidi and Mihkel Kama and Quentin Kral and Charles Law and Giuseppe Lodato and Patricia Luppe and Enrique Macias and Liton Majumdar and Rebecca Nealon and Anna Penzlin and Danae Polychroni and Daniel J. Price and Álvaro Ribas and Richard Teague and Claudia Toci and Diego Turrini and Antranik A. Sefilian and Yuhito Shibaike and Dimitris Stamatellos and Ewa Szuszkiewicz and Catherine Walsh},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.21906},
eprint = {2610.21906},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.21906},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Planet formation on solar system scales
AU - Francesco Zagaria
AU - Andrés F. Izquierdo
AU - Jaehan Bae
AU - Philippine Griveaud
AU - Richard A. Booth
AU - Pietro Curone
AU - Anders Johansen
AU - Stefano Facchini
AU - Myriam Benisty
AU - Tilman Birnstiel
AU - Alice Booth
AU - Ondřej Chrenko
AU - Ian Czekala
AU - Kiyoaki Doi
AU - Greta Guidi
AU - Mihkel Kama
AU - Quentin Kral
AU - Charles Law
AU - Giuseppe Lodato
AU - Patricia Luppe
AU - Enrique Macias
AU - Liton Majumdar
AU - Rebecca Nealon
AU - Anna Penzlin
AU - Danae Polychroni
AU - Daniel J. Price
AU - Álvaro Ribas
AU - Richard Teague
AU - Claudia Toci
AU - Diego Turrini
AU - Antranik A. Sefilian
AU - Yuhito Shibaike
AU - Dimitris Stamatellos
AU - Ewa Szuszkiewicz
AU - Catherine Walsh
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2610.21906
UR - https://arxiv.org/abs/2610.21906
AB - Giant planets are often regarded as primordial protoplanetary "architects". Their formation and interactions with planetesimals and other planets during and after the protoplanetary disc phase are key to setting the blueprint of the planetary systems we observe today. Catching nascent gas giants is our best opportunity to uncover these crucial steps in the planet formation process and shed light on the origins of our own solar system. Over the last decade, ALMA has revolutionised our understanding of planet formation; still, detecting signatures of Jupiter-like planets has remained out of reach. We argue that ALMA2040, a next-generation sub(mm) interferometer with improved sensitivity (×25 in the continuum and ×10 for line emission) and a ×3 higher angular resolution compared to ALMA, will be sensitive to (sub)mm emission around a forming Jupiter-like planet orbiting a Sun-like star within 150 pc and allow kinematically characterising interactions of Jovian and sub-Jovian planets with their natal disc. ALMA2040 will provide unique and unprecedented insights into how gas giants carve gaps, accrete material, form satellites, and affect the architectures of their co-evolving planetary systems.
ER -