Results 91 to 100 of about 30,446 (206)

Extinction of Taurus, Orion, Perseus and California Molecular Clouds Based on the LAMOST, 2MASS, and Gaia Surveys. II. The Extinction Law

The Astronomical Journal
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 region. The
ZheTai Cao, Biwei Jiang, Shu Wang, Jun Li   +3 more
doaj   +1 more source

Spectral Energy Distributions of starburst galaxies in the 900-1200 A range

, 2002
We present the 970-1175 A spectral energy distributions (SEDs) of 12 starburst galaxies observed with the Far Ultraviolet Spectroscopic Explorer FUSE.
Barnstedt, Bell, Calzetti, Calzetti, Calzetti, Cardelli, D. Burgarella, D. Kunth, Deharveng, Donas, Giavalisco, Gonzalez Delgado, Heckman, Heckman, Heckman, Helou, J. M. Deharveng, Kinney, Leitherer, Leitherer, Meurer, Meurer, Noeske, Sasseen, Schlegel, Shull, Stecher, Terlevich, Thuan, V. Buat, Vidal-Madjar, Witt   +31 more
core   +2 more sources

Foreground Dust Properties toward the Cluster NGC 7380

The Astronomical Journal
Using starlight polarization, we present the properties of foreground dust toward cluster NGC 7380 embedded in H ii region Sh 2-142. Observations of starlight polarization are carried out in four filters using an imaging polarimeter equipped with a 104 ...
Sadhana Singh, Jeewan C. Pandey, Thiem Hoang, Neelam Panwar, Biman J. Medhi, Vishal Joshi, Shashikiran Ganesh   +6 more
doaj   +1 more source

The role of the charge state of PAHs in ultraviolet extinction

, 2008
Aims: We explore the relation between charge state of polycyclic aromatic hydrocarbons (PAHs) and extinction curve morphology. Methods: We fit extinction curves with a dust model including core-mantle spherical particles of mixed chemical composition ...
Cecchi-Pestellini, C., Joblin, C., Malloci, G., Mulas, G., Williams, D. A.   +4 more
core   +1 more source

On the Interstellar Extinction Curve toward HD 93222, a Sight Line with an Exceedingly Narrow 2175 Å Extinction Bump

The Astrophysical Journal
The 2175 Å extinction bump, the most prominent spectral feature superimposed on the interstellar extinction curve, is widely seen in the interstellar medium of the Milky Way and external galaxies, both near and far.
Qian Wang, Aigen Li, X. J. Yang
doaj   +1 more source

Correlations between Dust Extinction Features across All Wavelength Scales: From Diffuse Interstellar Bands to R(V)

The Astrophysical Journal
Understanding variations in the dust extinction curve is imperative for using dust as a tracer of local structure in the interstellar medium, understanding dust chemistry, and performing extinction corrections.
Andrew K. Saydjari, Gregory M. Green
doaj   +1 more source

Interplay of dust alignment, grain growth and magnetic fields in polarization: lessons from the emission-to-extinction ratio

, 2017
Polarized extinction and emission from dust in the interstellar medium (ISM) are hard to interpret, as they have a complex dependence on dust optical properties, grain alignment and magnetic field orientation.
Boulanger, François, Fanciullo, Lapo, Guillet, Vincent, Jones, Anthony   +3 more
core   +2 more sources

The End of the Road for Far-infrared Reddening Maps? Evidence for Reddening Errors Driven by Changes in Polycyclic Aromatic Hydrocarbon Abundance

The Astrophysical Journal
Accurate correction for extinction by Galactic dust is essential for studying the extragalactic sky. In the low-extinction regions of the Ursa Major molecular cloud complex, we demonstrate that Galactic dust reddening maps constructed from observations ...
Dennis Lee, Brandon S. Hensley, Tzu-Ching Chang, Olivier Doré   +3 more
doaj   +1 more source

Large Variations Seen in First Ultraviolet Spectroscopic M33 Dust Extinction Curves

The Astrophysical Journal
Dust extinction curves provide one of the main avenues to understanding the detailed nature of dust grains and accounting for the effects of dust on observations of many astrophysical objects. For the first time, spectroscopic ultraviolet (UV) extinction
Karl D. Gordon, Petia Yanchulova Merica-Jones, Geoffrey C. Clayton, Ralph Bohlin, Marjorie Decleir, Claire E. Murray, Luciana Bianchi   +6 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source