Unveiling a cluster of protostellar disks around the massive protostar GGD27 MM1

Abstract

We used ALMA to observe the star-forming region GGD27 at 1.14 mm with an unprecedented angular resolution, 40 mas (56 au) and sensitivity (0.002 Msun). We detected a cluster of 25 continuum sources, most of which are likely tracing disks around Class 0/I protostars. Excluding the two most massive objects, disks masses are in the range 0.003-0.05 Msun. The analysis of the cluster properties indicates that GGD27 displays moderate subclustering. This result combined with the dynamical timescale of the radio jet (10000 years) suggests the youthfulness of the cluster. The lack of disk mass segregation signatures may support this too. We found a clear paucity of disks with Rdisk >100 au. The median value of the radius is 34 au, smaller than the median of 92 au for Taurus but comparable to the value found in Ophiuchus and in the Orion Nebula Cluster. In GGD27 there is no evidence of a distance-dependent disk mass distribution (i. e., disk mass depletion due to external photoevaporation), most likely due to the cluster youth. There is a clear deficit of disks for distances <0.02 pc. Only for distances >0.04 pc stars can form larger and more massive disks, suggesting that dynamical interactions far from the cluster center are weaker, although the small disks found could be the result of disk truncation. This work demonstrates the potential to characterize disks from low-mass YSOs in distant and massive (still deeply embedded) clustered environments.

arXiv commentAccepted for publication in Astronomy & Astrophysics Letters

References in corpus (38)

• Embedded Clusters in Molecular Clouds
• Circumstellar Dust Disks in Taurus-Auriga: The Submillimeter Perspective
• Protoplanetary Disk Structures in Ophiuchus
• Ringed Substructure and a Gap at 1 AU in the Nearest Protoplanetary Disk
• The Birth Environment of the Solar System
• A Steeper than Linear Disk Mass-Stellar Mass Scaling Relation
• The statistical Analysis of Star Clusters
• An ALMA Survey of Protoplanetary Disks in the $\sigma$ Orionis Cluster
• A dual-frequency sub-arcsecond study of proto-planetary disks at mm wavelengths: First evidence for radial variations of the dust properties
• Young Stellar Objects in the Gould Belt
• Using the minimum spanning tree to trace mass segregation
• The Ophiuchus DIsc Survey Employing ALMA (ODISEA) - I : project description and continuum images at 28 au resolution
• A Millimeter Continuum Size-Luminosity Relationship for Protoplanetary Disks
• Characterizing young protostellar disks with the CALYPSO IRAM-PdBI survey: large Class 0 disks are rare
• Investigating planet formation in circumstellar disks: CARMA observations of RY Tau and DG Tau
• Protoplanetary Disk Properties in the Orion Nebula Cluster: Initial Results from Deep, High-Resolution ALMA Observations
• ALMA Observations of the Orion Proplyds
• The VLA view of the HL Tau Disk - Disk Mass, Grain Evolution, and Early Planet Formation
• Measurement of Circumstellar Disk Sizes in the Upper Scorpius OB Association with ALMA
• Spitzer IRAC and MIPS Imaging of Clusters and Outflows in 9 High-mass Star Forming Regions
• Fragmentation of massive dense cores down to ~1000 AU: Relation between fragmentation and density structure
• Star Cluster Formation in a Turbulent Molecular Cloud Self-Regulated by Photo-Ionisation Feedback
• Faint disks around classical T Tauri stars: small but dense enough to form planets?
• An ALMA Continuum Survey of Circumstellar Disks in the Upper Scorpius OB Association
• Distribution of Serpens South protostars revealed with ALMA
• SXDF-ALMA 2 arcmin${}^2$ Deep Survey: 1.1-mm Number Counts
• Resolving the polarized dust emission of the disk around the massive star powering the HH~80-81 radio jet
• Discovery of Extremely High Velocity "Molecular Bullets" in the HH 80-81 High-Mass Star-Forming Region
• Water Masers Toward Ultracompact HII Regions
• Protoplanetary Disk Masses in the Young NGC 2024 Cluster
• X-rays from HH 80, HH 81, and the Central Region
• Protoplanetary Disks in the Orion OMC1 Region Imaged with ALMA
• On the spatial distributions of dense cores in Orion B
• VLA and BIMA observations toward the exciting source of the massive HH~80-81 outflow
• Millimeter and submillimeter high angular resolution interferometric observations: dust in the heart of IRAS 18162-2048
• Centimeter continuum observations of the northern head of the HH 80/81/80N jet: revising the actual dimensions of a parsec scale jet
• HfS, Hyperfine Structure Fitting Tool
• The circumestellar disk of the B0 protostar powering the HH 80-81 radio jet

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