Results 111 to 120 of about 1,020 (216)

On the nature of high reddening of Cygnus OB2 #12 hypergiant [PDF]

, 2016
© 2016 The Authors.To explain the nature of the high reddening (AV ≃ 10 mag) towards one of the most luminous stars in the Galaxy - Cyg OB2 #12 (B5 Ia-0), also known as MT304, we carried out spectrophotometric observations of 24 stars located in its ...
Chentsov E., Dyachenko V., Goranskij V., Karpov S., Rastegaev D., Malogolovets E., Maryeva O.   +6 more
core  

The diffuse interstellar band around 8620 Å

, 2020
Context. Diffuse interstellar bands (DIBs) are interstellar absorption features that widely exist in the optical and near-infrared wavelength range. DIBs play an important role in the lifecycle of the interstellar medium and can also be used to trace the
Rojas-Arriagada, A., Valenti, E., M. Schultheis, A. Recio-Blanco, F. Surot, Schultheis, M., P. de Laverny, G. Kordopatis, M. Zoccali, Recio-Blanco, A., de Laverny, P., Zoccali, M., Kordopatis, G., Surot, F., Rojas Arriagada, Alvaro, E. Valenti, A. Rojas-Arriagada, Zoccali, Manuela, Zhao, H.   +18 more
core   +1 more source

An Upper Limit of 106 M⊙ in Dust from ALMA Observations in 60 Little Red Dots

The Astrophysical Journal Letters
By virtue of their red color, the dust in little red dots (LRDs) has been thought to be of appreciable influence, whether that dust is distributed in a torus around a compact active galactic nucleus or diffuse in the interstellar medium of nascent ...
Caitlin M. Casey, Hollis B. Akins, Steven L. Finkelstein, Maximilien Franco, Seiji Fujimoto, Daizhong Liu, Arianna S. Long, Georgios Magdis, Sinclaire M. Manning, Jed McKinney, Marko Shuntov, Takumi S. Tanaka   +11 more
doaj   +1 more source

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

On the nature of high reddening of Cygnus OB2 #12 hypergiant

, 2020
© 2016 The Authors.To explain the nature of the high reddening (AV ≃ 10 mag) towards one of the most luminous stars in the Galaxy - Cyg OB2 #12 (B5 Ia-0), also known as MT304, we carried out spectrophotometric observations of 24 stars located in its ...
Chentsov E., Dyachenko V., Goranskij V., Karpov S., Rastegaev D., Malogolovets E., Maryeva O.   +6 more
core  

The Reddening Law of Galaxy Cluster Dust

, 2007
Dust is expected to enter the intracluster medium in galaxy clusters both through stripping of galactic interstellar matter and through dusty winds from intracluster stars.
Ian Dell'Antonio, Greg Kochanski, James Rhoads   +2 more
core  

A new era in solar system astronomy with JWST. [PDF]

Nat Commun, 2023
Villanueva GL, Milam SN.
europepmc   +1 more source

An all-sky catalogue of stellar reddening values

When observing astronomical objects, we must deal with extinction (i.e. the absorption and scattering of the emitted radiation by dust and gas between the source and the observer).
Prisegen, M., Faltova, N., Netopil, M., Paunzen, E.   +3 more
core   +2 more sources

A new, large-scale map of interstellar reddening derived from HI emission

We present a new large-scale, HI-based reddening map that covers 40% of the sky. We publish two different maps: The E(B-V) reddening map and the underlying HI column density for absolute radial velocities below 90 km/s.
Hensley, Brandon S., Doré, Olivier P., Lenz, Daniel   +2 more
core   +2 more sources

Interstellar Comet 3I/ATLAS: Evidence for Galactic Cosmic-Ray Processing

The Astrophysical Journal Letters
Spectral observations of 3I/ATLAS (C/2025 N1) with JWST/NIRSpec and SPHEREx reveal an extreme CO _2 enrichment (CO _2 /H _2 O = 7.6 ± 0.3) that is 4.5 σ above solar system comet trends and among the highest ever recorded.
Romain Maggiolo, Frederik Dhooghe, Guillaume P. Gronoff, Johan de Keyser, Gaël Cessateur   +4 more
doaj   +1 more source