Results 31 to 40 of about 11,786 (248)
The JCMT Transient Survey: Four-year Summary of Monitoring the Submillimeter Variability of Protostars [PDF]
Astrophysical Journal, 2021 We present the four-year survey results of monthly submillimeter monitoring of eight nearby (
Yong-Hee Lee +52 more
semanticscholar +1 more source
The Astrophysical Journal, 2010 We explore the origin of a population of distant companions (~1000 - 5000 AU) to Class I protostellar sources recently found by Connelley and co-workers, who noted that the companion fraction diminished as the sources evolved. Here we present N-body simulations of unstable triple systems embedded in dense cloud cores.
Reipurth, Bo +3 more
openaire +2 more sources
The VLA/ALMA Nascent Disk And Multiplicity (VANDAM) Survey of Orion Protostars. V. A Characterization of Protostellar Multiplicity [PDF]
Astrophysical Journal, 2021 We characterize protostellar multiplicity in 20 Current address: Niels Bohr Institute, University of Copenhagen, Øster Voldgade 5–7, DK-1350, Copenhagen K, Denmark.
J. Tobin +18 more
semanticscholar +1 more source
Frontiers 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
The 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
Signatures of UV radiation in low-mass protostars [PDF]
, 2021 Context. Ultraviolet radiation (UV) influences the physics and chemistry of star-forming regions, but its properties and significance in the immediate surroundings of low-mass protostars are still poorly understood. Aims.
Karska, Agata +29 more
core +1 more source
Chemical survey of Class I protostars with the IRAM-30m [PDF]
Astronomy & Astrophysics, 2021 Context. Class I protostars are a bridge between Class 0 protostars ( ≤ 10 5 yr old), and Class II ( ≥ 10 6 yr) protoplanetary disks. Recent studies show gaps and rings in the dust distribution of disks younger than 1 Myr, suggesting that planet ...
S. Mercimek +8 more
semanticscholar +1 more source
Identification of A Collapsing Protostar [PDF]
Astrophysics and Space Science, 1994 The globular molecular cloud B335 contains a single, deeply embedded, far-infrared source. Our recent observations of H2CO and CS lines toward this source provide direct kinematic evidence for collapse. Both the intensity and detailed shape of the line profiles match those expected from inside-out collapse inside a radius of 0.036 pc.
Neal J. Evans +3 more
openaire +1 more source
Questioning the spatial origin of complex organic molecules in young protostars with the CALYPSO survey [PDF]
Astronomy & Astrophysics, 2020 Context. Complex organic molecules (COMs) have been detected in a few Class 0 protostars but their origin is not well understood. While the usual picture of a hot corino explains their presence as resulting from the heating of the inner envelope by the ...
A. Belloche +14 more
semanticscholar +1 more source
CO in Protostars (COPS): Herschel-SPIRE Spectroscopy of Embedded Protostars∗ [PDF]
The Astrophysical Journal, 2018 Abstract We present full spectral scans from 200 to 670 μm of 26 Class 0+I protostellar sources obtained with Herschel-SPIRE as part of the “COPS-SPIRE” Open Time program, complementary to the DIGIT and WISH Key Programs. Based on our nearly continuous, line-free spectra from 200 to 670 μm, the calculated bolometric luminosities (L
Yao-Lun Yang +15 more
openaire +8 more sources