Extension of HOPS out to 500 pc (eHOPS). I. Identification and Modeling of Protostars in the Aquila Molecular Clouds [PDF]
The 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 +4 more sources
The Rate, Amplitude, and Duration of Outbursts from Class 0 Protostars in Orion [PDF]
The 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 +2 more sources
300: An ACA 870 μm Continuum Survey of Orion Protostars and Their Evolution [PDF]
The 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 +2 more sources
Investigating Protostellar Accretion-driven Outflows across the Mass Spectrum: JWST NIRSpec Integral Field Unit 3–5 μm Spectral Mapping of Five Young Protostars [PDF]
The Astrophysical Journal, 2023 Investigating Protostellar Accretion is a Cycle 1 JWST program using the NIRSpec+MIRI integral field units to obtain 2.9–28 μ m spectral cubes of five young protostars with luminosities of 0.2–10,000 L _⊙ in their primary accretion phase.
Samuel A. Federman +38 more
doaj +2 more sources
The Mass Accretion Rate and Stellar Properties in Class I Protostars [PDF]
The Astrophysical Journal, 2023 Stars collect most of their mass during the protostellar stage, yet the accretion luminosity and stellar parameters, which are needed to compute the mass accretion rate, are poorly constrained for the youngest sources.
Eleonora Fiorellino +7 more
doaj +2 more sources
A Galactic Survey of Radio Jets From Massive Protostars [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 In conjunction with a previous southern-hemisphere work, we present the largest radio survey of jets from massive protostars to date with high-resolution, ($\sim 0.04^{\prime\prime}$) VLA observations towards two subsamples of massive star-forming ...
Simon Purser +2 more
exaly +2 more sources
Searching for Kinematic Evidence of Keplerian Disks Around Class 0 Protostars With CALYPSO [PDF]
Astronomy and Astrophysics, 2020 The formation of protoplanetary disks is not well understood. To understand how and when these disks are formed, it is crucial to characterize the kinematics of the youngest protostars at a high angular resolution.
Sylvie Cabrit +2 more
exaly +2 more sources
Observational Signatures of Outbursting Protostars - I: From Hydrodynamic Simulations to Observations [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Accretion onto protostars may occur in sharp bursts. Accretion bursts during the embedded phase of young protostars are probably most intense, but can only be inferred indirectly through long-wavelength observations.
Jeong-Eun Lee +2 more
exaly +2 more sources
The Astronomical JournalProtostellar outflows and jets are almost ubiquitous characteristics during the mass accretion phase and encode the history of stellar accretion, complex organic molecule (COM) formation, and planet formation.
Somnath Dutta +24 more
doaj +2 more sources
The SOFIA Massive (SOMA) Star Formation Survey. III. From Intermediate- to High-mass Protostars [PDF]
Astrophysical Journal, 2020 We present SOFIA–FORCAST images of 14 intermediate-mass protostar candidates as part of the SOFIA Massive (SOMA) Star Formation Survey. We build spectral energy distributions, also using archival Spitzer, Herschel, and IRAS data. We then fit the spectral
Mengyao Liu +11 more
semanticscholar +3 more sources