Results 1 to 10 of about 22,763 (197)

Enlightening the Chemistry of Infalling Envelopes and Accretion Disks Around Sun-Like Protostars: The ALMA FAUST Project

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The huge variety of planetary systems discovered in recent decades likely depends on the early history of their formation. In this contribution, we introduce the FAUST Large Program which focuses specifically on the early history of solar-like protostars
C. Codella   +6 more
doaj   +1 more source

Extension of HOPS out to 500 pc (eHOPS). I. Identification and Modeling of Protostars in the Aquila Molecular Clouds

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present a Spitzer/Herschel focused survey of the Aquila molecular clouds ( d ∼ 436 pc) as part of the eHOPS (extension of the Herschel orion protostar survey, or HOPS, Out to 500 ParSecs) census of nearby protostars.
Riwaj Pokhrel   +16 more
doaj   +1 more source

Recent progress with observations and models to characterize the magnetic fields from star-forming cores to protostellar disks

open access: yesFrontiers in Astronomy and Space Sciences, 2022
In this review article, we aim at providing a global outlook on the progresses made in the recent years to characterize the role of magnetic fields during the embedded phases of the star formation process.
Anaëlle Maury   +4 more
doaj   +1 more source

Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results

open access: yesThe Astrophysical Journal, 2023
We present an overview of the Large Program, “Early Planet Formation in Embedded Disks (eDisk),” conducted with the Atacama Large Millimeter/submillimeter Array (ALMA).
Nagayoshi Ohashi   +36 more
doaj   +1 more source

The Rate, Amplitude, and Duration of Outbursts from Class 0 Protostars in Orion

open access: yesThe Astrophysical Journal Letters, 2022
At least half of a protostar’s mass is accreted in the Class 0 phase, when the central protostar is deeply embedded in a dense, infalling envelope. We present the first systematic search for outbursts from Class 0 protostars in the Orion clouds.
Wafa Zakri   +20 more
doaj   +1 more source

300: An ACA 870 μm Continuum Survey of Orion Protostars and Their Evolution

open access: yesThe Astrophysical Journal, 2023
We present an 870 μ m continuum survey of 300 protostars from the Herschel Orion Protostar Survey using the Atacama Compact Array (ACA). These data measure protostellar flux densities on envelope scales ≤8000 au (20″) and resolve the structure of ...
Samuel Federman   +13 more
doaj   +1 more source

Magnetic Effects Promote Supermassive Star Formation in Metal-enriched Atomic-cooling Halos

open access: yesThe Astrophysical Journal, 2023
Intermediate-mass black holes (with ≥10 ^5 M _⊙ ) are promising candidates for the origin of supermassive black holes (with ∼10 ^9 M _⊙ ) in the early universe (redshift z ∼ 6).
Shingo Hirano   +2 more
doaj   +1 more source

Protostellar jets: A statistical view with the CALYPSO IRAM-PdBI survey [PDF]

open access: yesEPJ Web of Conferences, 2022
In the context of the CALYPSO IRAM-PdBI Lai•ge Program we performed the first statistical survey of protostellar jets by analysing molecular emission in a sample of 21 protostars covering a broad range of internal luminosities (Lint from 0.035 L⊙ to 47 L⊙
Podio Linda   +2 more
doaj   +1 more source

MASERS AS TRACERS OF ANGULAR MOMENTUM IN MOLECULAR OUTFLOWS

open access: yesTecnociencia, 2023
The dissipation of angular momentum of collapsing molecular cores is a key component in the formation of stars. Previous observations have reported that highly collimated protostellar jets can remove angular momentum from low-mass protostars.
Diana V. López, Esteban D. Araya
doaj   +2 more sources

Merger Conditions of Population III Protostar Binaries

open access: yesThe Astrophysical Journal, 2023
Massive close binary stars with extremely small separations have been observed, and they are possible progenitors of gravitational-wave sources. The evolution of massive binaries in the protostellar accretion stage is key to understanding their formation
Takanobu Kirihara   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy