Results 151 to 160 of about 49,075 (253)

Ambipolar diffusion in interstellar clouds - A new solution

The Astrophysical Journal, 1979
We present a solution for the relative drift velocity between the neutral and ionized matter in a cylindrically symmetric, magnetic cloud, which contracted gravitationally to an equilibrium state from an initially uniform state. The cloud is bounded by a hot and tenuous external medium.
openaire   +1 more source

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

The Astrophysical Journal
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 ...
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   +23 more
doaj   +1 more source

Hydroxylated Mg-rich Amorphous Silicates as Catalysts for Molecular Hydrogen Formation in the Interstellar Medium

The Astrophysical Journal
We present results from an experimental study on the interaction of atomic deuterium with magnesium-rich amorphous enstatite- and forsterite-type silicates. Infrared spectroscopy was used to examine the process. During deuterium atom exposure, deuteroxyl
V. Mennella, T. Suhasaria, B. Kerkeni, G. Ouerfelli   +3 more
doaj   +1 more source

Interstellar Polarization Survey. IV. Characterizing the Magnetic Field Strength and Turbulent Dispersion Using Optical Starlight Polarization in the Diffuse Interstellar Medium

The Astronomical Journal
Angular dispersion functions are typically used to estimate the fluctuations in polarization angle around the mean magnetic field orientation in dense regions, such as molecular clouds.
Y. Angarita, M. J. F. Versteeg, M. Haverkorn, A. Marchal, C. V. Rodrigues, A. M. Magalhães, R. Santos-Lima, Koji S. Kawabata   +7 more
doaj   +1 more source

Spatial Variations of Dust Opacity and Grain Growth in Dark Clouds: L1689, L1709, and L1712

The Astrophysical Journal
The far-infrared (FIR) opacity of dust in dark clouds within the Ophiuchus molecular cloud is investigated through multiwavelength infrared observations from UKIDSS, Spitzer, and Herschel.
Jun Li, Biwei Jiang, He Zhao, Xi Chen, Yang Yang   +4 more
doaj   +1 more source

The Multiwavelength Extinction Law and Its Variation in the Coalsack Molecular Cloud Based on the Gaia, APASS, SMSS, 2MASS, GLIMPSE, and WISE Surveys

The Astrophysical Journal
Accurate interpretation of observations relies on the interstellar dust extinction law, which also serves as a powerful diagnostic for probing dust properties.
Juan Deng, Shu Wang, Biwei Jiang, He Zhao   +3 more
doaj   +1 more source

Timescales of Polycyclic Aromatic Hydrocarbon and Dust Continuum Emission from Gas Clouds Compared to Molecular Gas Cloud Lifetimes in PHANGS-JWST Galaxies

The Astrophysical Journal
Recent JWST mid-infrared (mid-IR) images, tracing polycyclic aromatic hydrocarbons (PAHs) and dust continuum emission, provide detailed views of the interstellar medium (ISM) in nearby galaxies.
Jaeyeon Kim, Mélanie Chevance, Lise Ramambason, Kathryn Kreckel, Ralf S. Klessen, Daniel A. Dale, Adam K. Leroy, Karin Sandstrom, Ryan Chown, Thomas G. Williams, Sumit K. Sarbadhicary, Francesco Belfiore, Frank Bigiel, Enrico Congiu, Oleg V. Egorov, Eric Emsellem, Simon C. O. Glover, Kathryn Grasha, Annie Hughes, J. M. Diederik Kruijssen, Janice C. Lee, Debosmita Pathak, Ismael Pessa, Erik Rosolowsky, Jiayi Sun, Jessica Sutter, David A. Thilker   +26 more
doaj   +1 more source

Comprehensive models of diffuse interstellar clouds : physical conditions and molecular abundances

, 1986
E. Dishoeck, J. Black
semanticscholar   +1 more source

Interstellar grain chemistry and organic molecules [PDF]

The detection of prominant infrared absorption bands at 3250, 2170, 2138, 1670 and 1470 cm(-1) (3.08, 4.61, 4.677, 5.99 and 6.80 micron m) associated with molecular clouds show that mixed molecular (icy) grain mantles are an important component of the ...
Allamandola, L. J., Sandford, S. A.
core   +1 more source

Metallicity Mapping of the Ionized Diffuse Gas at the Milky Way Disk–Halo Interface

The Astrophysical Journal
Metals in the diffuse, ionized gas at the boundary between the Milky Way’s interstellar medium (ISM) and circumgalactic medium, known as the disk–halo interface (DHI), are valuable tracers of the feedback processes that drive the Galactic fountain ...
Bo-Eun Choi, Jessica K. Werk, Kirill Tchernyshyov, J. Xavier Prochaska, Yong Zheng, Mary E. Putman, Drummond B. Fielding, Jay Strader   +7 more
doaj   +1 more source