Search Results - "Interstellar dust"

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  1. 1
    The Dust Extinction Curve: Beyond R(V)

    The Dust Extinction Curve: Beyond R(V) by Gregory M. Green, Xiangyu Zhang, Ruoyi Zhang

    Published 2025-01-01

    The dust extinction curve is typically parameterized by a single variable, R ( V ), in optical and near-infrared wavelengths. R ( V ) controls the slope of the extinction-versus-wavelength curve, and is thought to reflect the grain-size distribution and composition of dust. Low-resolution, flux-cali...

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  2. 2
    Observation of Diffuse Galactic Light Near the Galactic Center with ONC-T on Board Hayabusa2

    Observation of Diffuse Galactic Light Near the Galactic Center with ONC-T on Board Hayabusa2 by Kei Sano, Yuto Tome, Kana Kurosaki, Kohji Tsumura, Shuji Matsuura, Kohji Takimoto, Takahiro Iwata, Manabu Yamada, Tomokatsu Morota, Toru Kouyama, Masahiko Hayakawa, Yasuhiro Yokota, Eri Tatsumi, Moe Matsuoka, Naoya Sakatani, Koki Yumoto, Shingo Kameda, Hidehiko Suzuki, Yuichiro Cho, Kazuo Yoshioka, Kazunori Ogawa, Kei Shirai, Hirotaka Sawada, Seiji Sugita

    Published 2025-01-01

    Diffuse Galactic light (DGL) is starlight scattered by interstellar dust. In visible wavelengths, earlier studies observed DGL toward regions of low optical depth in high Galactic latitude, and show marginal consistency with a theoretical model assuming single scattering by dust grains. However, a m...

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  3. 3
    Exploring the Wolf Approach to Constraining NIR Extinction Laws in the Corona Australis Molecular Cloud

    Exploring the Wolf Approach to Constraining NIR Extinction Laws in the Corona Australis Molecular Cloud by Botao Jiang, Jun Li, Xi Chen

    Published 2025-01-01

    The viability of the star count (Wolf) method is assessed as a means of constraining the near-infrared (NIR) extinction law toward the Corona Australis molecular cloud. Using deep JHK _S photometry from the VISIONS survey, extinction maps with 1′ spatial resolution are constructed. The derived extin...

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  4. 4
    Distances of Supernova Remnants Associated with Neutron Stars in the Galaxy

    Distances of Supernova Remnants Associated with Neutron Stars in the Galaxy by Xiaohan Chen, Shu Wang, Xiaodian Chen

    Published 2025-01-01

    Accurate distance measurements to supernova remnants (SNRs) are essential for determining their physical parameters, such as size, age, and explosion energy, and for constraining the properties of associated neutron stars (NSs). We present an extinction–distance method that combines precise Gaia DR3...

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  5. 5
    Dust in the Smith Cloud? A UV Investigation into the Smith Cloud’s Gas-phase Abundance Patterns

    Dust in the Smith Cloud? A UV Investigation into the Smith Cloud’s Gas-phase Abundance Patterns by Johanna T. Vázquez, Kathleen A. Barger, Frances H. Cashman, Andrew J. Fox, Bart P. Wakker, Felix J. Lockman, Alex S. Hill, Suraj Poudel, April L. Horton, Jaq Hernández, Matthew Nuss, Alice Blake, Lauren Corlies, Molly Peeples

    Published 2025-01-01

    The Smith Cloud is a high-velocity cloud (HVC) on its final approach to the Milky Way that shows evidence of interaction with the Galaxy’s disk. We investigate the metallicity and gas-phase chemical depletion patterns in this HVC using UV absorption-line observations toward two background QSOs taken...

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  6. 6
    The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83

    The TYPHOON Stellar Population Synthesis Survey. II. Pushing Full Spectral Fitting to the Limit in the Nearby Grand Design Barred Spiral M83 by Eva Sextl, Rolf-Peter Kudritzki, Fabio Bresolin, Kathryn Grasha, Hye-Jin Park, Qian-Hui Chen, Andrew J. Battisti, Mark Seibert, Barry F. Madore, Jeffrey A. Rich

    Published 2025-01-01

    We apply population synthesis techniques to analyze TYPHOON long slit spectra of the starburst barred spiral galaxy M83. The analysis covers a central square of 5′ side length. We determine the spatial distribution of dust through the analysis of reddening and extinction, together with star formatio...

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  7. 7
    A 3D Model of the Local Bubble’s Magnetic Field: Insights from Dust and Starlight Polarization

    A 3D Model of the Local Bubble’s Magnetic Field: Insights from Dust and Starlight Polarization by Theo J. O’Neill, Alyssa A. Goodman, Juan D. Soler, Catherine Zucker, Jiwon Jesse Han

    Published 2025-01-01

    Clustered stellar feedback creates expanding voids in the magnetized interstellar medium known as superbubbles. Although theory suggests that superbubble expansion is influenced by interstellar magnetic fields, direct observational data on 3D superbubble magnetic field geometry is limited. The Sun’s...

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  8. 8
    Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Gas and dust in nearby galaxies [version 2; peer review: 2 approved, 1 approved with reservations]

    Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Gas and dust in nearby galaxies [version 2; peer review: 2 approved, 1 approved with reservations] by Pamela Klaassen, Mark Booth, Caroline Bot, Thomas Stanke, Claudia Cicone, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Francisca Kemper, Sven Wedemeyer, Amelie Saintonge, Alessandro Boselli, Enrique Lopez-Rodriguez, Bendix Hagedorn, Timothy A. Davis, Ann Mao, Akhil Lasrado, Frank Bigiel, Serena Viti, Paola Andreani, Melanie Chevance, Martin A. Cordiner, Alexander E. Thelen

    Published 2025-05-01

    Understanding the physical processes that regulate star formation and galaxy evolution are major areas of activity in modern astrophysics. Nearby galaxies offer unique opportunities to inspect interstellar medium (ISM), star formation (SF), radiative, dynamic and magnetic ( B → ) physics in great de...

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  9. 9
    Relationships between Polycyclic Aromatic Hydrocarbons, Small Dust Grains, H2, and H i in Local Group Dwarf Galaxies NGC 6822 and WLM Using JWST, ALMA, and the VLA

    Relationships between Polycyclic Aromatic Hydrocarbons, Small Dust Grains, H2, and H i in Local Group Dwarf Galaxies NGC 6822 and WLM Using JWST, ALMA, and the VLA by Ryan Chown, Adam K. Leroy, Alberto D. Bolatto, Jérémy Chastenet, Simon C. O. Glover, Rémy Indebetouw, Eric W. Koch, Jennifer Donovan Meyer, Nickolas M. Pingel, Erik Rosolowsky, Karin Sandstrom, Jessica Sutter, Elizabeth Tarantino, Frank Bigiel, Médéric Boquien, I-Da Chiang, Daniel A. Dale, Julianne J. Dalcanton, Oleg V. Egorov, Cosima Eibensteiner, Kathryn Grasha, Hamid Hassani, Hao He, Jaeyeon Kim, Sharon Meidt, Debosmita Pathak, Sumit K. Sarbadhicary, Snezana Stanimirovic, Vicente Villanueva, Thomas G. Williams

    Published 2025-01-01

    We present 0.6–3.2 pc resolution mid-infrared (MIR) JWST images at 7.7 μ m (F770W) and 21 μ m (F2100W) covering the main star-forming regions of two of the closest star-forming low-metallicity dwarf galaxies, NGC 6822 and Wolf–Lundmark–Melotte (WLM). The images of NGC 6822 reveal filaments, edge-bri...

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