Results 21 to 30 of about 3,592,155 (283)
The CH+abundance in turbulent, diffuse molecular clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 The intermittent dissipation of interstellar turbulence is an important energy source in the diffuse ISM. Though on average smaller than the heating rates due to cosmic rays and the photoelectric effect on dust grains, the turbulent cascade can channel large amounts of energy into a relatively small fraction of the gas that consequently undergoes ...
Myers, Andrew +2 more
openaire +2 more sources
The Transition from Diffuse Molecular Gas to Molecular Cloud Material in Taurus [PDF]
The Astrophysical Journal, 2021 Abstract We study four lines of sight that probe the transition from diffuse molecular gas to molecular cloud material in Taurus. Measurements of atomic and molecular absorption are used to infer the distribution of species and the physical conditions toward stars behind the Taurus Molecular Cloud (TMC).
S. R. Federman +8 more
openaire +3 more sources
Diffuse molecular clouds at high galactic latitude [PDF]
Symposium - International Astronomical Union, 1991 The IRAS 60 and 100 μ m flux from cirrus clouds are commonly explained by dust continuum emission. But this explanation in some cases requires unexpectedly high dust temperatures. We argue that the contribution of fine structure ...
openaire +1 more source
Abundance Ratios of OH/CO and HCO+/CO as Probes of the Cosmic-Ray Ionization Rate in Diffuse Clouds
The Astrophysical Journal, 2023 The cosmic-ray ionization rate (CRIR, ζ _2 ) is one of the key parameters controlling the formation and destruction of various molecules in molecular clouds. However, the current most commonly used CRIR tracers, such as ${{\rm{H}}}_{3}^{+}$ , OH ^+ , and
Gan Luo +8 more
doaj +1 more source
Discovery of novel molecular and biochemical predictors of response and outcome in diffuse large B-cell lymphoma [PDF]
, 2009 PhDDiscovery of Novel Molecular and Biochemical Predictors of Response and Outcome in Diffuse Large B-cell Lymphoma Diffuse large B-cell lymphoma (DLBCL) is the commonest form of non-Hodgkin lymphoma and responds to treatment with a 5-year overall ...
Last, Kim William
core +4 more sources
An Absorption Survey Of C3h+ And C4h In Diffuse Clouds Toward Galactic Continuum Regions [PDF]
, 2022 Observations of the diffuse interstellar gas over the past few decades have revealed a surprisingly rich molecular inventory comprising over 25\% of all known interstellar molecules.
Gupta, Harshal
core +1 more source
Molecular Formation in Hot Diffuse Clouds [PDF]
Symposium - International Astronomical Union, 1980 A description is given of the processes of molecular formation and destruction in diffuse interstellar clouds and detailed models of the clouds lying towards ζ Ophiuchi, ζ Persei and o Persei are used to assess the validity of gas phase chemistry. Modifications that may arise from shock-heated regions are discussed.
openaire +1 more source
Far-ultraviolet Dust Extinction and Molecular Hydrogen in the Diffuse Milky Way Interstellar Medium
The Astrophysical Journal, 2023 We aim to compare variations in the full-UV dust extinction curve (912–3000 Å), with the H i /H _2 /total H content along diffuse Milky Way sightlines, to investigate possible connections between ISM conditions and dust properties. We combine an existing
Dries Van De Putte +4 more
doaj +1 more source
The Behavior of Selected Diffuse Interstellar Bands with Molecular Fraction in Diffuse Atomic and Molecular Clouds [PDF]
The Astrophysical Journal, 2017 Abstract We study the behavior of eight diffuse interstellar bands (DIBs) in different interstellar environments, as characterized by the fraction of hydrogen in molecular form (f H2), with comparisons to the corresponding behavior of various known atomic and molecular species. The equivalent widths of the five “normal”
Haoyu Fan +12 more
openaire +2 more sources
Frontiers in Astronomy and Space Sciences, 2021 Stellar systems are often formed through the collapse of dense molecular clouds which, in turn, return copious amounts of atomic and molecular material to the interstellar medium.
Duncan V. Mifsud +6 more
doaj +1 more source