Results 71 to 80 of about 353 (134)

Helium-induced rotational (de-)excitation of interstellar rhomboidal silicon tricarbide (c-SiC3)

Astronomy & Astrophysics
Silicon carbide molecules are key tracers of dust formation and molecular evolution in carbon-rich circumstellar environments, yet their collisional excitation remains largely unexplored.
Mehnen Bilel
doaj   +1 more source

Calcium Chemistry in Carbon-rich Circumstellar Environments: The Laboratory and Astronomical Discovery of Calcium Dicarbide, CaC2

The Astrophysical Journal Letters
Calcium dicarbide, CaC _2 , has been characterized at high resolution in the laboratory, and its main isotopologue, ^40 CaC _2 , has been assigned to 14 rotational emission lines between 14 and 115 GHz, including 12 previously unassigned lines, in the ...
H. Gupta, P. B. Changala, J. Cernicharo, J. R. Pardo, M. Agúndez, C. Cabezas, B. Tercero, M. Guélin, M. C. McCarthy   +8 more
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Disk in the Circumstellar Envelope of Carbon Mira V Cygni

The Astronomical Journal
Asymptotic giant branch (AGB) stars are the primary source of dust and complex molecules in the interstellar medium. The determination of outflow parameters is often hindered by the unknown geometry of the circumstellar environment, creating a demand for
Boris S. Safonov, Sergey G. Zheltoukhov, Andrey M. Tatarnikov, Ivan A. Strakhov, Victor I. Shenavrin   +4 more
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The mystery of unidentified infrared emission bands. [PDF]

Astrophys Space Sci, 2022
Kwok S.
europepmc   +1 more source

The Protostars in Orion: Characterizing the Properties of Their Magnetized Envelopes

The Astrophysical Journal
We present a study connecting the physical properties of protostellar envelopes to the morphology of the envelope-scale magnetic field. We used the Atacama Large Millimeter/submillimeter Array (ALMA) polarization observations of 61 young protostars at 0 ...
Bo Huang, Josep M. Girart, Ian W. Stephens, Manuel Fernández López, Philip C. Myers, Qizhou Zhang, John J. Tobin, Paulo Cortes, Nadia M. Murillo, Sarah Sadavoy, Hector G. Arce, John M. Carpenter, Woojin Kwon, Valentin J. M. Le Gouellec, Zhi-Yun Li, Leslie W. Looney, Tom Megeath, Erin G. Cox, Nicole Karnath, Dominique Segura-Cox   +19 more
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Gas-phase preparation of azulene (C₁₀H₈) and naphthalene (C₁₀H₈) via the reaction of the resonantly stabilized fulvenallenyl and propargyl radicals. [PDF]

Chem Sci, 2023
Li W, Yang J, Zhao L, Couch D, Marchi MS, Hansen N, Morozov AN, Mebel AM, Kaiser RI.   +8 more
europepmc   +1 more source

Gas phase synthesis of the C40 nano bowl C₄₀H₁₀. [PDF]

Nat Commun, 2023
Tuli LB, Goettl SJ, Turner AM, Howlader AH, Hemberger P, Wnuk SF, Guo T, Mebel AM, Kaiser RI.   +8 more
europepmc   +1 more source

Silicon and Hydrogen Chemistry under Laboratory Conditions Mimicking the Atmosphere of Evolved Stars. [PDF]

Astrophys J, 2021
Accolla M, Santoro G, Merino P, Martínez L, Tajuelo-Castilla G, Vázquez L, Sobrado JM, Agúndez M, Jiménez-Redondo M, Herrero VJ, Tanarro I, Cernicharo J, Martín-Gago JÁ.   +12 more
europepmc   +1 more source

OH(²Π) + C₂H₄ Reaction: A Combined Crossed Molecular Beam and Theoretical Study. [PDF]

J Phys Chem A, 2023
Liang P, de Aragão EVF, Giani L, Mancini L, Pannacci G, Marchione D, Vanuzzo G, Faginas-Lago N, Rosi M, Skouteris D, Casavecchia P, Balucani N.   +11 more
europepmc   +1 more source

Nonadiabatic reaction dynamics to silicon monosulfide (SiS): A key molecular building block to sulfur-rich interstellar grains. [PDF]

Sci Adv, 2021
Doddipatla S, He C, Goettl SJ, Kaiser RI, Galvão BRL, Millar TJ.   +5 more
europepmc   +1 more source