Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Interstellar dust processes"'
Autor:
Lulu Zhang, Ismael García-Bernete, Chris Packham, Fergus R. Donnan, Dimitra Rigopoulou, Erin K. S. Hicks, Ric I. Davies, Taro T. Shimizu, Almudena Alonso-Herrero, Cristina Ramos Almeida, Miguel Pereira-Santaella, Claudio Ricci, Andrew J. Bunker, Mason T. Leist, David J. Rosario, Santiago García-Burillo, Laura Hermosa Muñoz, Francoise Combes, Masatoshi Imanishi, Alvaro Labiano, Donaji Esparza-Arredondo, Enrica Bellocchi, Anelise Audibert, Lindsay Fuller, Omaira González-Martín, Sebastian Hönig, Takuma Izumi, Nancy A. Levenson, Enrique López-Rodríguez, Daniel Rouan, Marko Stalevski, Martin J. Ward
Publikováno v:
The Astrophysical Journal Letters, Vol 975, Iss 1, p L2 (2024)
We analyze JWST Mid-Infrared Instrument/Medium Resolution Spectrograph integral field unit observations of three Seyferts from the Galactic Activity, Torus, and Outflow Survey (GATOS) and showcase the intriguing polycyclic aromatic hydrocarbon (PAH)
Externí odkaz:
https://doaj.org/article/840d8125ee9a45e7b682bd8914c0d4f0
Autor:
Atsuki Ishibashi, Germán Molpeceres, Hiroshi Hidaka, Yasuhiro Oba, Thanja Lamberts, Naoki Watanabe
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 162 (2024)
With the advent of JWST ice observations, dedicated studies on the formation reactions of detected molecules are becoming increasingly important. One of the most interesting molecules in interstellar ice is CO _2 . Despite its simplicity, the main fo
Externí odkaz:
https://doaj.org/article/75f01357f1dd4e419e04255e303597fe
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 284 (2024)
The dust grain size distribution (GSD) likely varies significantly across star-forming environments in the Universe, but its impact on star formation remains unclear. This ambiguity arises because the GSD interacts nonlinearly with processes like hea
Externí odkaz:
https://doaj.org/article/fb5792f55b0642bda3d7911b46613624
Autor:
Aleksandra Hamanowicz, Kirill Tchernyshyov, Julia Roman-Duval, Edward B. Jenkins, Marc Rafelski, Karl D. Gordon, Yong Zheng, Miriam Garcia, Jessica Werk
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 80 (2024)
The cycling of metals between interstellar gas and dust is a critical aspect of the baryon cycle of galaxies, yet our understanding of this process is limited. This study focuses on understanding dust depletion effects in the low-metallicity regime (
Externí odkaz:
https://doaj.org/article/1136b1f06e414fedbd4247a53d66391c
Autor:
Guillermo Tajuelo-Castilla, Jesús I. Mendieta-Moreno, Mario Accolla, Jesús M. Sobrado, Sofia Canola, Pavel Jelínek, Gary J. Ellis, José Ángel Martín-Gago, Gonzalo Santoro
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 184 (2024)
Ultraviolet (UV) processing in the interstellar medium (ISM) induces the dehydrogenation of hydrocarbons. Aliphatics, including alkanes, are present in different interstellar environments, being prevalently formed in evolved stars; thus, the dehydrog
Externí odkaz:
https://doaj.org/article/0e4a78da187d4e74b0d1bc7b9cc7e114
Autor:
L. S. Bernstein, T. R. Geballe
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 114 (2024)
We report new analyses of spectra of the 3.2–3.3 μ m absorption feature observed in the diffuse interstellar medium toward three Milky Way sources: 2MASS J 17470898 − 2829561 (2M1747) and the Quintuplet Cluster, both located in the Galactic cent
Externí odkaz:
https://doaj.org/article/d5b0c3162c5b40d7b9edd0598560bfcc
Akademický článek
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Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 90 (2023)
The CH _3 O and CH _2 OH radicals can be important precursors of complex organic molecules (COMs) in interstellar dust. The COMs presumably originating from these radicals were abundantly found in various astronomical objects. Because each radical le
Externí odkaz:
https://doaj.org/article/c349b0da2acf49e3aa584914427918df
Autor:
K.-J. Chuang, C. Jäger, N.-E. Sie, C.-H. Huang, C.-Y. Lee, Y.-Y. Hsu, Th. Henning, Y.-J. Chen
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 1, p 57 (2023)
The chemical inventory of protoplanetary midplanes is the basis for forming planetesimals. Among them, solid-state reactions based on CO/CO _2 toward molecular complexity on interstellar dust grains have been studied in theoretical and laboratory wor
Externí odkaz:
https://doaj.org/article/6ef47194b9fb45b4803a419d16e824fb
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 216 (2023)
We study the internal and external alignment of carbonaceous grains in the interstellar medium (ISM) within the Radiative Torque (RAT) paradigm. For internal alignment (IA), we find that hydrogenated amorphous carbon (HAC) grains having nuclear param
Externí odkaz:
https://doaj.org/article/3e9a75f1c6664b05ab438bb2ac38ff9d