Results 121 to 130 of about 877,168 (238)
Open Astronomy, 2011 Interstellar extinction is investigated in a 1.5 square degree area of the Cepheus Flare in the direction of the dark cloud TGU 619 at ℓ=102.5°, b=+15.5°.
Zdanavičius K. +4 more
doaj +1 more source
Unusual relative strengths of the diffuse interstellar bands in some interstellar dust clouds [PDF]
Some of the diffuse interstellar features (DIBs) in the spectra of certain stars at high galactic latitudes (1 is greater than 15 degrees) are unusually weak or absent while others have the strength expected for their color excess.
Krelowski, J., Walker, G. A. H.
core +1 more source
Discovery of Thionylimide, HNSO, in Space: The first N-, S-, and O-bearing Interstellar Molecule
The Astrophysical Journal LettersWe present the first detection in space of thionylimide (HNSO) toward the Galactic center molecular cloud G + 0.693-0.027, thanks to the superb sensitivity of an ultradeep molecular line survey carried out with the Yebes 40 m and IRAM 30 m telescopes ...
Miguel Sanz-Novo +14 more
doaj +1 more source
Interstellar clouds containing optically thick H2
The Astrophysical Journal, 1975 The theory of Black and Delgarno that the relative populations of the excited rotational levels of H2 can be understood in terms of cascading following absorption in the Lyman and Werner bands is employed to infer the gas densities and radiation fields within diffuse interstellar clouds containing H2 that is optically thin in those bands.
openaire +1 more source
Strength Ratios of Diffuse Interstellar Bands in Slightly Reddened Objects
UniverseThe disk of the Milky Way fills the interstellar medium in the form of discrete clouds, many (∼30) light-years across. The average density of this medium is 1 hydrogen atom per cm3 (Oort limit), in the clouds—several dozen atoms, and between the clouds ...
Jacek Krełowski, Arkadii Bondar
doaj +1 more source
The Passage of the Solar System through the Edge of the Local Bubble
The Astrophysical JournalThe Sun moves through the interstellar medium (ISM) at a velocity of ∼19 pc Myr ^−1 , making the conditions outside the solar system vary with time over millions of years.
Merav Opher +12 more
doaj +1 more source
Cloud-cloud collisions in the interstellar medium
The Astrophysical Journal, 1980 Results are presented from time-dependent numerical simulations of cloud-cloud collisions in the interstellar medium. Special emphasis is placed on physically detailed models of cloud collisions. The numerical simulations include heating, cooling, thermal conductivity, self-gravity, and molecule formation; magnetic fields have been neglected.
openaire +1 more source
Modeling the Far-infrared Polarization Spectrum of a High-mass Star-forming Cloud
The Astrophysical JournalThe polarization spectrum, or wavelength dependence of the polarization fraction, of interstellar dust emission provides important insights into the grain alignment mechanism of interstellar dust grains.
Dennis Lee +9 more
doaj +1 more source
Detection of Deuterated cyanoacetylene in the interstellar cloud TMC 1
, 1980 W. Langer +3 more
semanticscholar +1 more source