Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Interstellar Abundances"'
Autor:
Chiaki Kobayashi, Andrea Ferrara
Publikováno v:
The Astrophysical Journal Letters, Vol 962, Iss 1, p L6 (2024)
We interpret the peculiar supersolar nitrogen abundance recently reported by the James Webb Space Telescope observations for GN-z11 ( z = 10.6) using our state-of-the-art chemical evolution models. The observed CNO ratios can be successfully reproduc
Externí odkaz:
https://doaj.org/article/4747eb45cada497b9d52c4fcaa85540e
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 55 (2024)
Recent high-resolution and sensitivity Atacama Large Millimeter/submillimeter Array observations have unveiled the carbon isotope ratios ( ^12 C/ ^13 C) of complex organic molecules (COMs) in a low-mass protostellar source. To understand the ^12 C/ ^
Externí odkaz:
https://doaj.org/article/9e62a2e2db684bad95ad1704417e41f6
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 102 (2024)
Atacama Large Millimeter/submillimeter Array (ALMA) data toward QSO J1851+0035 ( l = 33.°498, b = +0.°194) were used to study absorption lines by Galactic molecular gas. We detected 17 species (CO, ^13 CO, C ^18 O, HCO ^+ , H ^13 CO ^+ , HCO, H _2
Externí odkaz:
https://doaj.org/article/6876f3cae4c24440ba2ff758ee967f1c
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
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 270, Iss 2, p 35 (2024)
Deuterated molecules are valuable probes for investigating the evolution and the kinematics in the earliest stages of star formation. In this study, we conduct a comprehensive investigation by performing a single-point survey of 101 starless clump ca
Externí odkaz:
https://doaj.org/article/7bfe5c82cf2041b596fc3dcdfc466f8d
Publikováno v:
Frontiers in Chemistry, Vol 10 (2022)
Since the first detection of CH molecule in interstellar medium (ISM), more than 270 molecules have been identified in various astronomical sources in ISM. These molecules include big complex ones, such as fullerene (C60) and polycyclic aromatic hydr
Externí odkaz:
https://doaj.org/article/19270453b8f542bf8bccdbebf50303e5
Autor:
Víctor M. Rivilla, Juan García De La Concepción, Izaskun Jiménez-Serra, Jesús Martín-Pintado, Laura Colzi, Belén Tercero, Andrés Megías, Álvaro López-Gallifa, Antonio Martínez-Henares, Sara Massalkhi, Sergio Martín, Shaoshan Zeng, Pablo De Vicente, Fernando Rico-Villas, Miguel A. Requena-Torres, Giuliana Cosentino
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
We report the first detection of the phosphorus monoxide ion (PO+) in the interstellar medium. Our unbiased and very sensitive spectral survey toward the G+0.693–0.027 molecular cloud covers four different rotational transitions of this molecule, t
Externí odkaz:
https://doaj.org/article/10240de3bfc24e458e07931a3cbe45d1
Autor:
Adam M. Ritchey
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 29 (2023)
We present an analysis of high-resolution far-UV archival spectra obtained with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope of the star HD 75309, which probes high-velocity shocked gas in the Vela supernova remnant (SNR). W
Externí odkaz:
https://doaj.org/article/3efe56464ab54a8fb6d78e6214049087
Autor:
Bratati Bhat, Rumela Kar, Suman Kumar Mondal, Rana Ghosh, Prasanta Gorai, Takashi Shimonishi, Kei E. I. Tanaka, Kenji Furuya, Ankan Das
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 111 (2023)
The destiny of complex organic molecules (COMs) in star-forming regions is interlinked with various evolutionary phases. Therefore, identifying these species in diversified environments of identical star-forming regions would help to understand their
Externí odkaz:
https://doaj.org/article/fa7d0e85597d406e988cc30635201fdd
Autor:
Taiki Suzuki, Liton Majumdar, Paul F. Goldsmith, Kazuki Tokuda, Harumi Minamoto, Masatoshi Ohishi, Masao Saito, Tomoya Hirota, Hideko Nomura, Yoko Oya
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 189 (2023)
We present the observational results of a precursor of glycine, methylamine (CH _3 NH _2 ), together with methanol (CH _3 OH) and methanimine (CH _2 NH) for the high-mass star-forming regions NGC 6334I, G10.47+0.03, G31.41+0.3, and W51 e1/e2 using th
Externí odkaz:
https://doaj.org/article/41dfef1380c3454a83635b9ba82fefed