Distribution of Serpens South Protostars Revealed With ALMA [PDF]
Astronomy and Astrophysics, 2018 Context. Clusters are common sites of star formation, whose members display varying degrees of mass segregation. The cause may be primordial or dynamical, or a combination both. If mass segregation were to be observed in a very young protostellar cluster,
Héctor G. Arce +2 more
exaly +2 more sources
Observational signatures of outbursting protostars – II. Exploring a wide range of eruptive protostars [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Young stars exhibit variability due to changes in the gas accretion rate onto them, an effect that should be quite significant in the early stages of their formation.
B. Macfarlane +7 more
semanticscholar +4 more sources
The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. VI. Insights from Radiative Transfer Modeling [PDF]
Astrophysical Journal, 2022 We present Markov Chain Monte Carlo radiative transfer modeling of a joint ALMA 345 GHz and spectral energy distribution data set for a sample of 97 protostellar disks from the VLA and ALMA Nascent Disk and Multiplicity Survey of Orion Protostars.
P. Sheehan +3 more
semanticscholar +1 more source
N-bearing complex organics toward high-mass protostars. Constant ratios pointing to formation in similar pre-stellar conditions across a large mass range [PDF]
Astronomy & Astrophysics, 2022 No statistical study of COMs toward a large sample of high-mass protostars with ALMA has been carried out so far. We aim to study six N-bearing species: CH$_3$CN, HNCO, NH$_2$CHO, C$_2$H$_5$CN, C$_2$H$_3$CN and CH$_3$NH$_2$ in a large sample of high-mass
P. Nazari +12 more
semanticscholar +1 more source
The Perseus ALMA Chemistry Survey (PEACHES). I. The Complex Organic Molecules in Perseus Embedded Protostars [PDF]
, 2021 To date, about two dozen low-mass embedded protostars exhibit rich spectra with lines of complex organic molecules (COMs). These protostars seem to possess a different enrichment in COMs.
Yao-Lun Yang +16 more
semanticscholar +1 more source
The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. II. A Statistical Characterization of Class 0 and Class I Protostellar Disks [PDF]
Astrophysical Journal, 2020 We have conducted a survey of 328 protostars in the Orion molecular clouds with the Atacama Large Millimeter/submillimeter Array at 0.87 mm at a resolution of ∼0.″1 (40 au), including observations with the Very Large Array at 9 mm toward 148 protostars ...
J. Tobin +35 more
semanticscholar +1 more source
Methanol deuteration in high-mass protostars [PDF]
Astronomy & Astrophysics, 2022 Context. The deuteration of molecules forming in the ices such as methanol (CH 3 OH) is sensitive to the physical conditions during their formation in dense cold clouds and can be probed through observations of deuterated methanol in hot cores. Aims. The
M. V. van Gelder +8 more
semanticscholar +1 more source
Frontiers 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
The Chemical Nature of Orion Protostars: Are ORANGES Different from PEACHES? ORANGES II. [PDF]
Astrophysical Journal, 2022 Understanding the chemical past of our Sun and how life appeared on Earth is no mean feat. The best strategy we can adopt is to study newborn stars located in an environment similar to the one in which our Sun was born and assess their chemical content ...
M. Bouvier +5 more
semanticscholar +1 more source
Exponentially Amplified Magnetic Field Eliminates Disk Fragmentation around Population III Protostars [PDF]
Astrophysical Journal Letters, 2022 One critical remaining issue that is unclear in the initial mass function of the first (Population III) stars is the final fate of secondary protostars that formed in the accretion disk—specifically, whether they merge or survive.
S. Hirano, M. Machida
semanticscholar +1 more source