DIHCA survey

A close-up view into the formation of high-mass stars with ALMA.

Highlights

Spiral accretion in G336.01-0.82

We found streams of gas bringing fresh material to the disk surrounding a high-mass protostar. The interactive figure shows that the kinematics of this gas can be explained with models including rotation and gravitational collapse. The gas seems to be accumulating in the outskirts of the disk and in the future can be accreted or induce fragmentation, allowing the formation of stellar companions.


Publications

2025

2025

  1. Digging Into the Interior of Hot Cores with ALMA (DIHCA). V. Deuterium Fractionation of Methanol
    Takeshi Sakai, Nobuhito Shiomura, Patricio Sanhueza, and 16 more authors
    ApJ, Apr 2025
    DOI

2024

2024

  1. Digging into the Interior of Hot Cores with ALMA (DIHCA). IV. Fragmentation in High-mass Star-forming Clumps
    Kousuke Ishihara, Patricio Sanhueza, Fumitaka Nakamura, and 10 more authors
    ApJ, Oct 2024
    DOI
  2. Observations of high-order multiplicity in a high-mass stellar protocluster
    Shanghuo Li, Patricio Sanhueza, Henrik Beuther, and 13 more authors
    Nature Astronomy, Jan 2024
    DOI

2023

2023

  1. Digging into the Interior of Hot Cores with ALMA: Spiral Accretion into the High-mass Protostellar Core G336.01-0.82
    Fernando A. Olguin, Patricio Sanhueza, Huei-Ru Vivien Chen, and 9 more authors
    ApJL, Dec 2023
    DOI
  2. Digging into the Interior of Hot Cores with the ALMA (DIHCA). III. The Chemical Link between NH_2CHO, HNCO, and H_2CO
    Kotomi Taniguchi, Patricio Sanhueza, Fernando A. Olguin, and 8 more authors
    ApJ, Jun 2023
    DOI

2022

2022

  1. Digging into the Interior of Hot Cores with ALMA (DIHCA). II. Exploring the Inner Binary (Multiple) System Embedded in G335 MM1 ALMA1
    Fernando A. Olguin, Patricio Sanhueza, Adam Ginsburg, and 5 more authors
    ApJ, Apr 2022
    DOI

2021

2021

  1. Digging into the Interior of Hot Cores with ALMA (DIHCA). I. Dissecting the High-mass Star-forming Core G335.579-0.292 MM1
    Fernando A. Olguin, Patricio Sanhueza, Andrés E. Guzmán, and 10 more authors
    ApJ, Mar 2021
    DOI

Other publications using DIHCA data

2025

2025

  1. Hierarchical accretion flow from the G351 infrared dark filament to its central cores
    H. Beuther, F. A. Olguin, P. Sanhueza, and 2 more authors
    A&A, Mar 2025
    DOI
  2. Magnetic Fields in Massive Star-forming Regions (MagMaR). V. The Magnetic Field at the Onset of High-mass Star Formation
    Patricio Sanhueza, Junhao Liu, Kaho Morii, and 36 more authors
    ApJ, Feb 2025
    DOI

2023

2023

  1. Salt-bearing Disk Candidates around High-mass Young Stellar Objects
    Adam Ginsburg, Brett A. McGuire, Patricio Sanhueza, and 6 more authors
    ApJ, Jan 2023
    DOI