Results 141 to 150 of about 293,009 (201)

Inefficient Growth of SiOx Grains : Implications for Circumstellar Outflows

Inefficient Growth of SiOx Grains : Implications for Circumstellar Outflows
To explain observations of abundant circumstellar dust and high stellar wind velocity, most models simply postulate the efficient nucleation and growth of silicate dust particles. Here, we report measurement of the SiO-(SiOx)(n) grain sticking coefficient in a microgravity sounding rocket experiment, indicating very inefficient (0.005-0.016) grain ...
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Abundant supernova dust and heterogeneous aqueous alteration revealed by stardust in two lithologies of asteroid Bennu. [PDF]

Nat Astron
Nguyen AN, Seifert LB, Shimizu K, Thomas-Keprta K, Le L, Keller LP, Clemett SJ, Rahman Z, Barnes JJ, Connolly HC, Lauretta DS.   +10 more
europepmc   +1 more source

Formation of SiC grains in circumstellar envelops of carbon stars

Formation of SiC grains in circumstellar envelops of carbon stars
The emission feature around 11.3 micrometer observed towards carbon stars is considered to be due to SiC grains condensed in the circumstellar envelopes. The isotopic anomalies of SiC discovered in carbonaceous meteorites strongly support the formation of SiC grains in carbon-rich AGB (Asymptotic Giant Branch) stars.
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Computational investigation of spin-resolved energy landscapes of FeC₄H₂ ⁺ and their astrochemical implications. [PDF]

Front Chem
Shajan S, Thirumoorthy K.
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Direct Samples of Interstellar and Interplanetary Material with IMAP. [PDF]

Space Sci Rev
Szalay JR, Provornikova E, Ayari E, Bzowski M, Christian ER, Funsten HO, Galli A, Gkioulidou M, Horányi M, Livi S, McComas DJ, Möbius E, Ogasawara K, Rahmanifard F, Rankin JS, Reisenfeld DB, Schwadron NA, Sternovsky Z, Swaczyna P, Turner D, Zank GP, Zirnstein EJ.   +21 more
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Some Possible Components of Circumstellar Grain Material

The Astrophysical Journal, 1970
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The chemistry of habitable oceans in the Solar system. [PDF]

Nat Commun
Hao J, Zhu Y, Knoll AH, Tosca NJ, He C, Vetter MCYL, Liao L, Crockford PW, Stüeken EE, Huo A, Li J, Mondal JA, Catling DC, Song Y, Ju P, Pan L, Huang F, Glein CR.   +17 more
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Modeling the radiolysis in H₂O : HCOOH ice: connecting laboratory experiments with astronomical measurements. [PDF]

RSC Adv
Fargnoli CMF, Moraes L, Pilling S.
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Chemistry in Extreme Environments: The Mystery of Molecular Complexity in Space. [PDF]

ACS Cent Sci
Puzzarini C, Alessandrini S.
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Origin and Evolution of the Galilean Satellites Within the Jovian System. [PDF]

Space Sci Rev
Nimmo F, Canup R, Fujii Y, Izidoro A, Ji J, McKinnon W, Mousis O, Ormel C, Ogihara M, Stevenson D, Blanc M.   +10 more
europepmc   +1 more source