Results 101 to 110 of about 853,229 (315)
Seven-color photometry in the Vilnius system has been obtained for 420 stars down to V = 16 mag in the area containing the overlapping open clusters NGC 1750 and NGC 1758 in Taurus.
Straižys V.+8 more
doaj +1 more source
Large-scale Interstellar Structure and the Heliosphere [PDF]
The properties of interstellar clouds near the Sun are ordered by the Loop I superbubble and by the interstellar radiation field. Comparisons of the kinematics and magnetic field of the interstellar gas flowing past the Sun, including the Local Interstellar Cloud (LIC), indicate a geometric relation between Loop I as defined by radio synchrotron ...
arxiv
Detection of Deuterated Formaldehyde in Interstellar Clouds [PDF]
AbstractDeuterated formaldehyde has been detected for the first time in interstellar clouds; the observed ratio HDCO/H2CO implies formation by gas phase chemistry.
R. A. Linke+3 more
openaire +3 more sources
The photoreaction induced by Lyman‐α circularly polarized light (CPL) irradiation in racemic alanine film is more complex than simple preferential photolysis of enantiopure alanine molecules, and formation of larger molecules is observed. Circular networks of order of 100 nm scale are introduced in the alanine film surface by the irradiation.
Masahiro Kobayashi+10 more
wiley +1 more source
Oxygen-containing complex organic molecules are key precursors to biorelevant compounds fundamental for the origins of life. However, the untangling of their interstellar formation mechanisms has just scratched the surface, especially for oxygen ...
Jia Wang+3 more
doaj +1 more source
A Component of the Smith High-velocity Cloud Now Crossing the Galactic Plane
We have identified a new structure in the Milky Way: a leading component of the Smith high-velocity cloud that is now crossing the Galactic plane near longitude 25°. Using new 21 cm H i data from the Green Bank Telescope (GBT), we measured the properties
Felix J. Lockman+3 more
doaj +1 more source
High Velocity Rain: The Terminal Velocity of Model of Galactic Infall [PDF]
A model is proposed for determining the distances to falling interstellar clouds in the galactic halo by measuring the cloud velocity and column density and assuming a model for the vertical density distribution of the Galactic interstellar medium. It is shown that falling clouds with $N(H I) < \sim 10^{19} cm^{-2}$ may be decelerated to a terminal ...
arxiv +1 more source
Interstellar H2 toward HD 37903
We present an analysis of interstellar H2 toward HD 37903, which is a hot, B 1.5 V star located in the NGC 2023 reflection nebula. Meyer et al. (2001) have used a rich spectrum of vibrationally excited H2 observed by the HST to calculate a model of the ...
Abgrall+14 more
core +1 more source
The QM/MM simulation protocol involving carbonic link bonds was extended for the treatment of layered carbon structures to study the adsorption and intercalation properties of graphitic materials. Abstract The previously introduced workflow to achieve an energetically and structurally optimized description of frontier bonds in quantum mechanical ...
Felix R. S. Purtscher, Thomas S. Hofer
wiley +1 more source
Nearby Supernova and Cloud Crossing Effects on the Orbits of Small Bodies in the Solar System
Supernova (SN) blasts envelop many surrounding stellar systems, transferring kinetic energy to small bodies in the systems. Geologic evidence from ^60 Fe points to recent nearby SN activity within the past several Myr.
Leeanne Smith+2 more
doaj +1 more source