2025ApJ...989....7T


Query : 2025ApJ...989....7T

2025ApJ...989....7T - Astrophys. J., 989, 7 (2025/August-2)

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO). VII. Testing Accretion Mechanisms from Disk Population Synthesis.

TABONE B., ROSOTTI G.P., TRAPMAN L., PINILLA P., PASCUCCI I., SOMIGLIANA A., ALEXANDER R., VIOQUE M., ANANIA R., KUZNETSOVA A., ZHANG K., PEREZ L.M., CIEZA L.A., CARPENTER J., DENG D., AGURTO-GANGAS C., RUIZ-RODRIGUEZ D.A., SIERRA A., KURTOVIC N.T., MILEY J., GONZALEZ-RUILOVA C., TORRESVILLANUEVA E., HOGERHEIJDE M.R., SCHWARZ K., TOCI C., TESTI L. and LODATO G.

Abstract (from CDS):

The architecture of planetary systems depends on the evolution of the disks in which they form. In this work, we develop a population synthesis approach to interpret the Atacama Large Millimeter/submillimeter Array survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO) measurements of disk gas mass and size considering two scenarios: turbulence-driven evolution with photoevaporative winds and MHD wind-driven evolution. A systematic method is proposed to constrain the distribution of disk parameters from the disk fractions, accretion rates, disk gas masses, and CO gas sizes. We find that turbulence-driven accretion with initially compact disks (R0 ≃ 5-20 au), low mass-loss rates, and relatively long viscous timescales (tν,0 ≃ 0.4-3 Myr or αSS ≃ 2-4 × 10–4) can reproduce the disk fractions and gas sizes. However, the distribution of apparent disk lifetimes defined as the ${M}_{D}/{\dot{M}}_{* }$ ratio is severely overestimated by turbulence-driven models. On the other hand, MHD wind-driven accretion can reproduce the bulk properties of disk populations from Ophiuchus to Upper Scorpius assuming compact disks with an initial magnetization of about β ≃ 105 (αDW ≃ 0.5-1 × 10–3) and a magnetic field that declines with time. More studies are needed to confirm the low masses found by AGE-PRO, notably for compact disks that question turbulence-driven accretion. The constrained synthetic disk populations can now be used for realistic planet population models to interpret the properties of planetary systems on a statistical basis.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet formation - Protoplanetary disks

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
2 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
3 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
4 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0

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