Results 111 to 120 of about 41,542 (217)
Predicting Interstellar Object Chemodynamics with Gaia
The Astronomical JournalThe interstellar object (ISO) population of the Milky Way is a product of its stars. However, what is in fact a complex structure in the solar neighborhood has traditionally in ISO studies been described as smoothly distributed.
Matthew J. Hopkins +2 more
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Galactic gamma-ray observations and galactic structure [PDF]
Recent observations of gamma-rays originating in the galactic disk together with radio observations, support an emerging picture of the overall structure of our galaxy with higher interstellar gas densities and star formation rates in a region which ...
Stecker, F. W.
core +1 more source
Revisiting a Chemical Route to the Formation of CN− in the Interstellar Medium
The Astrophysical JournalWe discuss the HCN + H ^− reaction as a path to the formation of CN ^− , the smallest cyanopolyyne anion observed in several interstellar environments.
Pablo del Mazo-Sevillano +5 more
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Modelling the Galaxy in the era of Gaia
, 2009 The body of photometric and astrometric data on stars in the Galaxy has been growing very fast in recent years (Hipparcos/Tycho, OGLE-3, 2-Mass, DENIS, UCAC2, SDSS, RAVE, Pan Starrs, Hermes, ...) and in two years ESA will launch the Gaia satellite, which
Binney, James
core
Detecting Dark Objects with Plasma Microlensing by Their Gravitational Wakes
The Astrophysical JournalA moving mass makes a gravitational wake in the partially ionized interstellar medium, which acts as a lens for radio-frequency light. Consequently, plasma microlensing could complement gravitational microlensing in the search for invisible massive ...
M. Sten Delos
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The Astrophysical Journal LettersThe velocity dispersion–size relation ( σ _v ∼ R ^β ) is a crucial indicator of the dynamic properties of interstellar gas, where the slope is considered as β ∼ 0.5. Recent observations reveal a steep velocity dispersion–size relation with the slope β
Yi-Heng Xie, Guang-Xing Li
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Rotational-state-selected Carbon Astrochemistry
CHIMIAThe addition of individual quanta of rotational excitation to a molecule has been shown to markedly change its reactivity by significantly modifying the intermolecular interactions. So far, it has only been possible to observe these rotational effects in
Jutta Toscano
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The Astrophysical JournalThe cold neutral medium (CNM) is where neutral atomic hydrogen (H i ) is converted into molecular clouds, so the structure and kinematics of the CNM are key drivers of galaxy evolution.
Daniel R. Rybarczyk +2 more
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On the Role of Noncircular Motions in MaNGA Galaxies. I. Global Properties
The Astrophysical JournalNoncircular (NC) motions represent the imprints of nonaxisymmetric structures in galaxies, providing opportunities to study the physical properties of gas departing from circular rotation.
Carlos López-Cobá +3 more
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Molecular Hydrogen Formation via Vibrational Excitation of Partially Superhydrogenated Pyrenes
The Astrophysical JournalWhile polycyclic aromatic hydrocarbons (PAHs) are now accepted to be abundant in interstellar space, the abundance and influence of superhydrogenated PAHs (HPAHs) in the interstellar medium (ISM) are still under investigation.
Frederik Doktor S. Simonsen +6 more
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