Massive extended streamers feed high-mass young stars

Abstract

Stars are born in a variety of environments that determine how they gather gas to achieve their final masses. It is generally believed that disks are ubiquitous around protostars as a result of angular momentum conservation and are natural places to grow planets. As such, they are proposed to be the last link in the inflow chain from the molecular cloud to the star. However, disks are not the only form that inflows can take. Here we report on high-resolution observations performed with the Atacama Large Millimeter/submillimeter Array that reveal inflows in the form of streamers. These streamers persist well within the expected disk radius, indicating that they play a substitute role channeling material from the envelope directly to an unresolved small disk or even directly to the forming high-mass protostar. These flows are massive enough to feed the central unresolved region at a rate sufficient to quench the feedback effects of the young massive star.

Published in Science Advances and available at https://www.science.org/doi/10.1126/sciadv.adw4512

References in corpus (21)

• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• CASA, the Common Astronomy Software Applications for Radio Astronomy
• MAMBO Mapping of Spitzer c2d Small Clouds and Cores
• ATLASGAL --- properties of a complete sample of Galactic clumps
• Three-dimensional simulation of massive star formation in the disk accretion scenario
• A protostellar system fed by a streamer of 10,500 au length
• PRODIGE -- Envelope to disk with NOEMA I. A 3000 au streamer feeding a Class I protostar
• Gravity Driven Magnetic Field at ~1000 au Scales in High-mass Star Formation
• ALMA-IMF I -- Investigating the origin of stellar masses: Introduction to the Large Program and first results
• Cloudlet capture by Transitional Disk and FU Orionis stars
• The Impact of Feedback During Massive Star Formation by Core Accretion
• Accretion and magnetic field morphology around Class 0 stage protostellar discs
• Zooming in on Individual Star Formation: Low- and High-mass Stars
• Spiral arms and instability within the AFGL 4176 mm1 disc
• Digging into the Interior of Hot Cores with ALMA (DIHCA). I. Dissecting the High-mass Star-Forming Core G335.579-0.292 MM1
• ALMA-IMF XV: The core mass function in the high-mass star-formation regime
• Detection of Irregular, Sub-mm Opaque Structures in the Orion Molecular Clouds: Protostars within 10000 years of formation?
• The sharp ALMA view of infall and outflow in the massive protocluster G31.41+0.31
• FERIA: Flat Envelope Model with Rotation and Infall under Angular Momentum Conservation
• Massive Protostellar Disks as a Hot Laboratory of Silicate Grain Evolution
• Discs are born eccentric