Results 81 to 90 of about 9,190 (204)

Evidence for Jet/Outflow Shocks Heating the Environment around the Class I Protostellar Source Elias 29: FAUST XXI

open access: yesThe Astrophysical Journal
We have observed the late Class I protostellar source Elias 29 at a spatial resolution of 70 au with the Atacama Large Millimeter/submillimeter Array as part of the FAUST Large Program.
Yoko Oya   +68 more
doaj   +1 more source

FAUST. VII. Detection of a Hot Corino in the Prototypical Warm Carbon-chain Chemistry Source IRAS 15398–3359

open access: yesThe Astrophysical Journal, 2023
We have observed the low-mass protostellar source IRAS 15398−3359 at a resolution of 0.″2–0.″3, as part of the Atacama Large Millimeter/Submillimeter Array Large Program FAUST, to examine the presence of a hot corino in the vicinity of the protostar.
Yuki Okoda   +18 more
doaj   +1 more source

GAS GAPS IN THE PROTOPLANETARY DISK AROUND THE YOUNG PROTOSTAR HL TAU [PDF]

open access: yes, 2016
We have analyzed the HCO+ (1–0) data of the Class I–II protostar, HL Tau, obtained from the Atacama Large Millimeter/submillimeter Array long baseline campaign.
Hsi-Wei Yen   +6 more
semanticscholar   +1 more source

M17 MIR: A Massive Star Is Forming via Episodic Mass Accretion

open access: yesThe Astrophysical Journal Letters
We analyzed the Atacama Large Millimeter/submillimeter Array (ALMA) band 6 data for the outbursting massive protostar M17 MIR. The ALMA CO J = 2–1 data reveal a collimated and bipolar north–south outflow from M17 MIR.
Wei Zhou   +4 more
doaj   +1 more source

Vertical structure of the transition zone from infalling rotating envelope to disc in the Class 0 protostar, IRAS 04368+2557 [PDF]

open access: yes, 2017
We have resolved for the first time the radial and vertical structure of the almost edge-on envelope/disk system of the low-mass Class 0 protostar L1527. For that, we have used ALMA observations with a spatial resolution of 0.25$^{\prime\prime}$$\times$0.
N. Sakai   +14 more
semanticscholar   +1 more source

Chemical Differentiation around Five Massive Protostars Revealed by ALMA -Carbon-Chain Species, Oxygen-/Nitrogen-Bearing Complex Organic Molecules- [PDF]

open access: green, 2023
Kotomi Taniguchi   +11 more
openalex   +1 more source

An SiO Toroid and Wide-angle Outflow Associated with the Massive Protostar W75N(B)-VLA2

open access: yesThe Astrophysical Journal Letters, 2023
We have carried out Atacama Large Millimeter/submillimeter Array observations of the massive star-forming region W75N(B), which contains the massive protostars VLA1, VLA2, and VLA3.
José F. Gómez   +14 more
doaj   +1 more source

The ALMA-PILS survey: First detections of ethylene oxide, acetone and propanal toward the low-mass protostar IRAS 16293-2422 [PDF]

open access: yes, 2016
Context. One of the open questions in astrochemistry is how complex organic and prebiotic molecules are formed. The unsurpassed sensitivity of the Atacama Large Millimeter/submillimeter Array (ALMA) takes the quest for discovering molecules in the warm ...
J. Lykke   +17 more
semanticscholar   +1 more source

Models of Rotating Infall for the B335 Protostar

open access: yesThe Astrophysical Journal, 2023
Models of the protostellar source, B335, are developed using axisymmetric three-dimensional models to resolve conflicts found in one-dimensional models.
Neal J. Evans II   +9 more
doaj   +1 more source

History of the solar-type protostar IRAS 16293–2422 as told by the cyanopolyynes [PDF]

open access: yes, 2016
Context. Cyanopolyynes are chains of carbon atoms with an atom of hydrogen and a CN group on either side. They are detected almost everywhere in the interstellar medium (ISM), as well as in comets. In the past, they have been used to constrain the age of
A. J. Al-Edhari   +14 more
semanticscholar   +1 more source

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