Zobrazeno 1 - 10
of 997
pro vyhledávání: '"INFRARED PHOTOMETRY"'
Autor:
Jérémy Chastenet, Karin Sandstrom, Adam K. Leroy, Caroline Bot, I-Da Chiang, Ryan Chown, Karl D. Gordon, Eric W. Koch, Hélène Roussel, Jessica Sutter, Thomas G. Williams
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 276, Iss 1, p 2 (2024)
We present resolved 3.6–250 μ m dust spectral energy distribution (SED) fitting for ∼800 nearby galaxies. We measure the distribution of radiation field intensities heating the dust, the dust mass surface density (Σ _d ), and the fraction of du
Externí odkaz:
https://doaj.org/article/582659e741e64aeb8ad0b821ba1b7265
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 170 (2024)
We develop a robust machine learning classifier model utilizing the eXtreme-Gradient Boosting (XGB) algorithm for improved classification of Galactic Wolf–Rayet (WR) stars based on IR colors and positional attributes. For our study, we choose an ex
Externí odkaz:
https://doaj.org/article/697db9c5f7bc4c25ba3e3976c914abae
Autor:
Stacey Alberts, Jianwei Lyu, Irene Shivaei, George H. Rieke, Pablo G. Pérez-González, Nina Bonaventura, Yongda Zhu, Jakob M. Helton, Zhiyuan Ji, Jane Morrison, Brant E. Robertson, Meredith A. Stone, Yang Sun, Christina C. Williams, Christopher N. A. Willmer
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 224 (2024)
The James Webb Space Telescope is revolutionizing our view of the Universe through unprecedented sensitivity and resolution in the infrared, with some of the largest gains realized at its longest wavelengths. We present the Systematic Mid-infrared In
Externí odkaz:
https://doaj.org/article/623dce15d6ef44b1846156b7243ea21f
Autor:
S. Elaheh Hosseini, Andreas Eckart, Michal Zajaček, Silke Britzen, Harshitha K. Bhat, Vladimír Karas
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 261 (2024)
We focus on a sample of 42 sources in the vicinity of the bow-shock source IRS 1W (N-source region), located at a distance of 6.″05 northeast of the supermassive black hole Sagittarius A* (Sgr A*), within the radius of 1.″35. We present the first
Externí odkaz:
https://doaj.org/article/f8c6ae7c71a4410db5ca8927965f8ea5
Autor:
Helen Kyung Kim, Matthew A. Malkan, Toshinobu Takagi, Nagisa Oi, Denis Burgarella, Takamitsu Miyaji, Hyunjin Shim, Hideo Matsuhara, Tomotsugu Goto, Yoichi Ohyama, Veronique Buat, Seong Jin Kim
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 253 (2024)
Polycyclic aromatic hydrocarbon (PAH) dust emission has been proposed as an effective extinction-independent star formation rate (SFR) indicator in the mid-infrared, but this may depend on conditions in the interstellar medium. The coverage of the AK
Externí odkaz:
https://doaj.org/article/9810b024b04343f6a789b6cd9b055267
Autor:
Liang-Liang Yu
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 120 (2024)
This work presents the data processing, fitting procedure, modeling, and analyzing of 9 yr infrared light curves provided by the WISE/NEOWISE telescope, by which the regolith characteristics of Main-belt Object (656) Beagle is studied. Beagle locates
Externí odkaz:
https://doaj.org/article/3e14823668a54e199e5ae29277f9b1c8
Autor:
L. D. Anderson, Matteo Luisi, B. Liu, Dylan J. Linville, Robert A. Benjamin, Natasha Hurley-Walker, N. M. McClure-Griffiths, Catherine Zucker
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 1, p 43 (2024)
The Galactic center lobe (GCL) is an object ∼1° across that is located north of the Galactic center. In the mid-infrared (MIR) the GCL appears as two 8.0 μ m filaments between which there is strong 24 μ m and radio continuum emission. Due to its
Externí odkaz:
https://doaj.org/article/546719e959124933b965be88edc6106b
Autor:
Ying Lu, Xi Chen, Shi-Min Song, Jun-Ting Liu, Tian Yang, You-Xin Wang, Yan-Kun Zhang, Shi-Jie Zhang
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 2, p 44 (2024)
This study focuses on the analysis of mid-infrared variability in a sample of high-mass young stellar objects (YSOs) associated with the cataloged sources from the APEX Telescope Large Area Survey of the Galaxy (ATLASGAL). The Near-Earth Object Wide-
Externí odkaz:
https://doaj.org/article/f1ae6a6fa41e422c9a5e954513b7a653
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 2, p 115 (2024)
We present the most precise constraints to date for the mass and age distributions of single ultracool dwarfs in the solar neighborhood, based on an updated volume-limited sample of 504 L, T, and Y dwarfs within 25 pc. We develop a Monte Carlo approa
Externí odkaz:
https://doaj.org/article/f3524c8354d44a13bb51960c891b33fe
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 2, p 121 (2024)
Supermassive dark stars (SMDS) are luminous stellar objects formed in the early Universe at redshift z ∼ 10–20, made primarily of hydrogen and helium, yet powered by dark matter. We examine the capabilities of the Roman Space Telescope (RST), and
Externí odkaz:
https://doaj.org/article/7f5d5311c3e7476c82e608271f09e366