Results 231 to 239 of about 3,246 (239)

High-resolution spectroscopy of [H,C,N]⁺: II. Ground state rotational spectrum of HCN⁺ (<i>X̃</i>²Π).

Phys Chem Chem Phys
Silva WGDP, Schmid PC, Gupta D, Thorwirth S, Sarka J, Asvany O, Schlemmer S.   +6 more
europepmc   +1 more source

First Detection of Deuterium in Venus's Extended Exosphere

Weichbold F, Lammer H, Scherf M, Schmid D, Simon-Wedlund C, Volwerk M, Mazelle C, Wieser GS, Constatinou T, Futaana Y, Woitke P, Ferus M, Baumjohann W, Barabash S, Delva M, Eminger P, Helling C, Jarosikova A, Jernej I, Kacina J, Lichtenegger H, Magnus W, Nakamura R, Nemeckova K, Rimmer P, Varsani A, Voros Z, Zhang T.   +27 more
europepmc   +1 more source

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Properties of the Neutral Hydrogen in the Magellanic Clouds

Astrophysics and Space Science Library, 1971
The first low-resolution survey of the neutral hydrogen in the Clouds (Kerr et al., 1954) showed the existence of large Hi envelopes around both Clouds and an unexpectedly large gas content for the Small Cloud. The second survey (Hindman et al., 1963) was also carried out with a small telescope but a better receiver was used; this study confirmed the ...
F J Kerr, Kerr F J
exaly   +2 more sources

Further Measurements of Magnetic Fields in Interstellar Clouds of Neutral Hydrogen

Nature, 1969
A new series of measurements of the Zeeman splitting of 21-cm spectral lines has revealed strong (> 10−5 G) magnetic field effects in several neutral hydrogen clouds in the direction of HII regions. Low limits have been set to the line-of-sight field components in six other regions of space.
G L Verschuur
exaly   +2 more sources

The Leo Intergalactic Neutral Hydrogen Cloud

1986
The current status of the neutral hydrogen λ21 cm radio observations of the intergalactic cloud in Leo are described. These include both HI observations at Arecibo with an angular resolution of ∼3 arc min, and VLA D-array observations with an effective resolution of 45 arc sec.
Yervant Terzian, S. E. Schneider, E. E. Salpeter   +2 more
openaire   +1 more source

The distance to two neutral hydrogen clouds

The Astrophysical Journal, 1996
A lower limit to the distance of the high-velocity cloud (HVC) complex A of 4 kpc (z > 3 kpc) is derived. The HVC is detected toward the Seyfert galaxy Mrk 106 in Mg II lambda lambda 2796, 2803 absorption spectra taken with Hubble Space Telescope (HST) proving that Mg+ is present in the cloud. It is not detected in the Mg II spectra of two stars, PG
Wakker, B, Howk, C, Schwarz, U, vanWoerden, H, Beers, T, Wilhelm, R, Kalberla, P, Danly, L   +7 more
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Cooling of Interstellar Clouds of Neutral Hydrogen and the Abundance of Molecular Hydrogen

Publications of the Astronomical Society of Japan, 1968
Abstract The structure of the radiative cooling layer behind the shock front due to interstellar cloud-collision is calculated for a collision velocity of Mach number 20 (~ 16 km/sec). The magnetic field is assumed to be 0 or 10–5 gauss parallel to the shock front. The cooling mechanisms involved are the collision of H atoms with O atoms,
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Correlation between the Twelve High-velocity Neutral Hydrogen Clouds and a Feature of the Sky in the Radio Continuum

Nature, 1965
J Meaburn, Meaburn J
exaly  

H i Clouds with Spin Temperatures Less than 25'K. H. Physical Properties of 'two Neutral Hydrogen Clouds

Astronomical Journal, 1972
G R Knapp, Gerrit L Verschuur
exaly