Next: Absorption bands identified with Up: Optical spectrum of IRAS04296 Previous: Emission molecular bands . We measured the radial velocity using our best spectrum, that obtained in February, 1997. ... It should be noted also that the value of radial velocity we derived agrees with the value of which was given by Omont et al. (1993) from CO data and by Decin et al. (1998) from optical spectrum. ...

J2316+040 HI Absorption 6.54.10 4 6.56.10 4 6.58.10 4 6.60.10 4 Heliocentric Velocity (Km/s) 0.000 0.001 0.002 0.003 Fractional Absorption 65400 65600 65800 66000 Heliocentric Velocity (km/sec) 0.001 0.002 0.003 0.0 Fractional Absorption J2316+040

... Absorption by neutral atomic hydrogen in luminous spiral galaxies provides an excellent tool to study the gas kinematics in their nuclear regions. ... Since the absorption lines are intrinsically narrow as a result of the low temperatures of the optically thick gas, typically 30 to 150 K (Dickey, Salpeter & Terzian 1979), it is surprising that numerous galaxies show H I absorption over a broad range of velocities (a few hundred kms -1 ); see e.g., Fig. ... range . ... NGC 253 . ... NGC 660 . ...

. Next: Triple with velocity curves Up: Fit scenarios Previous: Single-lined spectroscopic binary with Contents . Select all three masses as fit parameters. The mass ratio of the close pair will be constrained, but as far as the absolute masses, this system is identical to a single-lined binary. Christian Hummel 2015-04-28

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... High Velocity Clouds and the Milky Way . ... High velocity clouds (HVCs) of gas have been seen for decades but their origins and destinations have remained mysterious. Recent measurements have now placed at least one of these clouds in the halo of our Milky Way Galaxy , while other measurements have determined the relative abundance of cloud elements. ... NASA Official: Jay Norris. ... Публикации с ключевыми словами: high velocity clouds - Milky Way - облака - Галактика - Млечный Путь . ...

spaceweb@oulu.fi - last update: 18 May 1999, 1400 UT . The critical velocity ionization, a concept first proposed by Hannes Alfven in 1954, holds that if neutral atoms move through a background-magnetized plasma with kinetic energy equal their ionization energy, then they will ionize through collective plasma processes in excess of that predicted by collisions and charge exchange. ... Source: Christensen and Reasoner: Satellite Probes Plasma Processes in Earth Orbit in EOS, 73 , Number 2, 1992 . ...

. If an object is moving so fast that its kinetic energy exceeds this, it can escape out into space, never to return. Thus . Previous slide . Next slide . Back to first slide . View graphic version .

... Many extragalactic objects for which radial velocities are desired display strong emission lines. ... EMSAO, a companion to the cross-correlation task XCSAO (Kurtz et al. 1992), was written to find emission lines automatically, compute redshifts for each identified line, and combine them into a single radial velocity. ... Figure: This EMSAO Summary page shows line centers and fit information for a night sky spectrum. ... To test EMSAO adequately, a lot of emission line spectra were needed. ...

... l - the mean galactic longitude; . ... mul - the median proper motion along galactic longitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dml - the estimation of mul dispersion in the OB-association, in 0.001 arcsec year -1 ; . mub - the median proper motion along galactic latitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dmb - the estimation of mub dispersion in the OB-association, in 0.001 arcsec year -1 ; . ...

We present a catalogue of galaxies for which spatially resolved data on their internal kinematics have been published; there is no apriori restriction regarding their morphological type. The catalogue lists the references to the articles where the data are published, as well as a coded description of these data: observed emission (E) or absorption (A) data, optical (O) or radio (R) data, velocity (V) or velocity dispersion (D), radial profile (1) or 2D field (2). ...