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Related papers: Morphologies of protostellar outflows: An ALMA vie…

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In this paper we present simulated observations of massive self-gravitating circumstellar discs using the Atacama Large Millimetre/sub-millimetre Array (ALMA). Using a smoothed particle hydrodynamics model of a $0.2M_{\odot}$ disc orbiting…

Solar and Stellar Astrophysics · Physics 2015-05-18 P. Cossins , G. Lodato , L. Testi

[Abridged] The detection of the rotational lines of CO in proto-galaxies in the early Universe provides one of the most promising ways of probing the fundamental physical properties of a galaxy, such as its size, dynamical mass, gas…

Astrophysics · Physics 2009-11-11 T. R. Greve , J. Sommer-Larsen

First hydrostatic cores are predicted by theories of star formation, but their existence has never been demonstrated convincingly by (sub)millimeter observations. Furthermore, the multiplicity at the early phases of the star formation…

Solar and Stellar Astrophysics · Physics 2015-06-11 Benoît Commerçon , François Levrier , Anaëlle J. Maury , Thomas Henning , Ralf Launhardt

Context: Because it is viewed simply edge-on, the HH212 protostellar system is an ideal laboratory for studying the interplay of infall, outflow, and rotation in the earliest stages of low-mass star formation. Aims: We wish to exploit the…

Solar and Stellar Astrophysics · Physics 2015-06-22 C. Codella , S. Cabrit , F. Gueth , L. Podio , S. Leurini , R. Bachiller , A. Gusdorf , B. Lefloch , B. Nisini , M. Tafalla , W. Yvart

The ringed disk around HL Tau stands out as the iconic signature of planet formation, but the origin of the substructures is still debated. The HL Tau system also drives a powerful bipolar wind, and we analyze its outermost component traced…

Astrophysics of Galaxies · Physics 2026-01-14 F. Bacciotti , T. Nony , L. Podio , C. Dougados , A. Garufi , S. Cabrit , C. Codella , N. Zimniak , J. Ferreira

With two directly detected protoplanets, the PDS 70 system is a unique source in which to study the complex interplay between forming planets and their natal environment. The large dust cavity carved by the two giant planets can affect the…

Earth and Planetary Astrophysics · Physics 2024-09-04 L. Rampinelli , S. Facchini , M. Leemker , J. Bae , M. Benisty , R. Teague , C. J. Law , K. I. Öberg , B. Portilla-Revelo , A. J. Cridland

We investigate the potential of the Atacama Large Millimeter/submillimeter Array (ALMA) and the Next Generation Very Large Array (ngVLA) to observe substructures in nearby young disks which are due to the gravitational interaction between…

Earth and Planetary Astrophysics · Physics 2018-02-14 Luca Ricci , Shang-Fei Liu , Andrea Isella , Hui Li

Millimeter/submillimeter variability is often attributed to dynamical disk-mediated accretion, yet detection is limited to low-mass protostars in nearby clouds. Recent observations have also revealed significant (sub)millimeter variability…

Fragmentation of massive dense molecular clouds is the starting point in the formation of rich clusters and massive stars. Theory and numerical simulations indicate that the population of the fragments (number, mass, diameter, separation)…

Astrophysics of Galaxies · Physics 2018-07-25 F. Fontani , B. Commerçon , A. Giannetti , M. T. Beltrán , Á. Sánchez-Monge , L. Testi , J. Brand , J. C. Tan

The Atacama Large Millimeter/submillimeter Array (ALMA) offers new diagnostic possibilities that complement other commonly used diagnostics for the study of our Sun. In particular, ALMA's ability to serve as an essentially linear…

Starless dense cores eventually collapse dynamically, which forms protostars inside them, and the physical properties of the cores determine the nature of the forming protostars. We report ALMA observations of dust continuum emission and…

We present a study of outflows at extremely early stages of high-mass star formation obtained from the ALMA Survey of 70 $\mu \rm m$ dark High-mass clumps in Early Stages (ASHES). Twelve massive 3.6$-$70 $\mu \rm m$ dark prestellar clump…

The Atacama Large Millimeter/submillimeter Array (ALMA) revolutionised our understanding of protoplanetary discs. However, the available data have not given conclusive answers yet on the underlying disc evolution mechanisms (viscosity or…

Earth and Planetary Astrophysics · Physics 2023-04-26 Francesco Zagaria , Stefano Facchini , Anna Miotello , Carlo F. Manara , Claudia Toci , Cathie J. Clarke

We observed the W51 high-mass star-forming complex with ALMA's longest-baseline configurations, achieving an angular resolution of $\sim$20 milliarcseconds, corresponding to a linear resolution of $\sim$100 au at $D_{\mathrm{W51}}=5.4$ kpc.…

Astrophysics of Galaxies · Physics 2020-12-23 Ciriaco Goddi , Adam Ginsburg , Luke Maud , Qizhou Zhang , Luis Zapata

The role of outflows in the formation of stars and the protostellar disks that generate them is a central question in astrophysics. Outflows are associated with star formation across the entire stellar mass spectrum. In this review, we…

Solar and Stellar Astrophysics · Physics 2019-12-13 Ralph E. Pudritz , Tom P. Ray

The interstellar medium feeds both the formation of stars and the growth of black holes, making it a key ingredient in the evolution of galaxies. With the advent of the Atacama Large Millimeter/ submillimeter Array (ALMA), we can now probe…

Astrophysics of Galaxies · Physics 2025-05-26 Gabriela Calistro-Rivera , Jacqueline Hodge

Gaseous outflows are key phenomena in the evolution of galaxies, as they affect star formation (either positively or negatively), eject gas from the core or disk, and directly cause mixing of pristine and processed material. Active outflows…

Astrophysics of Galaxies · Physics 2022-11-23 G. C. Jones , R. Maiolino , C. Circosta , J. Scholtz , S. Carniani , Y. Fudamoto

Forming massive stars launch outflows of magnetic origin, which in fact serve as a marker for finding sites of massive star formation. However, both the theoretical and observational study of the mechanisms that intervene in the formation…

Solar and Stellar Astrophysics · Physics 2023-01-18 André Oliva , Rolf Kuiper

Spiral structures have been detected in evolved protostellar disks, driving the disk accretion towards the central protostars to facilitate star formation. However, it is still unclear if these structures can form earlier in young…

Astrophysics of Galaxies · Physics 2023-07-05 Chin-Fei Lee , Kai-Syun Jhan , Anthony Moraghan

ALMA will revolutionize the study of star formation by providing a combination of angular resolution and sensitivity that far exceeds that of present instruments. I will focus on studies of relatively isolated cores that are forming…

Astrophysics · Physics 2007-05-23 Neal J. Evans