Zobrazeno 1 - 10
of 11 930
pro vyhledávání: '"Dust , extinction"'
Autor:
Shu Wang, Xiaodian Chen
Publikováno v:
The Astrophysical Journal Letters, Vol 964, Iss 1, p L3 (2024)
The interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate the 0.6–5.3 μ m in
Externí odkaz:
https://doaj.org/article/f1431a5f4ea64d939756dad03b1de943
Autor:
Jose Manuel Pérez-Martínez, Helmut Dannerbauer, Yusei Koyama, Pablo G. Pérez-González, Rhythm Shimakawa, Tadayuki Kodama, Yuheng Zhang, Kazuki Daikuhara, Chiara D’Eugenio, Abdurrahman Naufal
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 74 (2024)
We combine JWST/NIRCam and Subaru/MOIRCS dual Pa β +H α narrowband imaging to trace the dust attenuation and the star formation activities of a sample of 43 H α emitters at the core of one of the most massive and best-studied clusters in formation
Externí odkaz:
https://doaj.org/article/30055af8bc54458fa819658d801e6bfb
Publikováno v:
The Astronomical Journal, Vol 168, Iss 6, p 256 (2024)
The extinction law from ultraviolet (UV) to infrared (IR; 0.2–24 μ m) is determined by relying on the blue-edge method and color-excess ratios for some nearby molecular clouds, from the low-mass star-forming region to the massive star-forming regi
Externí odkaz:
https://doaj.org/article/a99abfd052b040849b48d51d4fff73c7
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 234 (2024)
We investigate the radial dependence of the scaling relations of dust attenuation in nearby galaxies using integral field spectroscopy data from MaNGA. We identify ionized gas regions of kiloparsec size from MaNGA galaxies, and for each region we est
Externí odkaz:
https://doaj.org/article/266f418b9bef4a388edbe56806e618a4
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 223 (2024)
Molecular clouds are regions of dense gas and dust in space where new stars and planets are born. There is a strong correlation between the distribution of dust and molecular gas in molecular clouds. The present work focuses on the three-dimensional
Externí odkaz:
https://doaj.org/article/cea0eb6089694378a3e60180d06fa4ce
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 203 (2024)
We present a catalog of dust clouds at high Galactic latitude based on the Planck 857 GHz dust emission data. Using a clustering hierarchical algorithm, 315 dust clouds at high Galactic latitudes are identified. Additionally, using the optical and ul
Externí odkaz:
https://doaj.org/article/8c758f8cffbb46b38d5b3f605fbc8368
Autor:
Zoë Haggard, Andrea M. Ghez, Shoko Sakai, Abhimat K. Gautam, Tuan Do, Jessica R. Lu, Matthew Hosek, Mark R. Morris, Sean Granados
Publikováno v:
The Astronomical Journal, Vol 168, Iss 4, p 166 (2024)
The Milky Way’s central parsec is a highly extinguished region with a population of high-proper-motion stars. We have tracked 145 stars for ∼10 yr at wavelengths between 1 and 4 μ m to analyze extinction effects in color–magnitude space. Appro
Externí odkaz:
https://doaj.org/article/cccc2731d1d14140b9c7338e1a02e8a9
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 138 (2024)
Intrinsic colors (ICs) of stars are essential for studies on both stellar physics and dust reddening. In this work, we developed an XGBoost model to predict ICs with the atmospheric parameters T _eff , ${\rm{log}}\,g$ , and [M/H]. The model was train
Externí odkaz:
https://doaj.org/article/5c02950807d6432391c7953cfb6daf04
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 136 (2024)
Stars form within dense cores composed of both gas and dust within molecular clouds. However, despite the crucial role that dust plays in the star formation process, its dynamics is frequently overlooked, with the common assumption being a constant,
Externí odkaz:
https://doaj.org/article/2ad6ccbb7e754b0d9ae80cbe3162d7ab
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 127 (2024)
We present a direct measurement of extinction curves using corrected Gaia XP spectra of the common sources in Gaia DR3 and LAMOST DR7. Our analysis of approximately 370,000 high-quality samples yielded a high-precision average extinction curve for th
Externí odkaz:
https://doaj.org/article/4497ad78400f428bb8eb3dff5fb750aa