... Nidever et al 2007 (Nidever et al 07) · What is the total gas content? ... NII ], [SII], and [OIII] in the Stream · `MS II' brightest sightline in H · Weiner: 1.3 R (7' FOV) · WHAM: 0.65 R (60' FOV) · [ NII ]/H traces temperature · [SII]/[ NII ] traces ionization state · [ NII ]/H = 0.20, [SII]/H = 0.34 · If Z = Z Sun : · T = 6,000 K, S+/S = 1 · If Z = 0.1 ZSun · T = 30,000 K, S+/S = 0.2 · [OIII]/H 0.06 [OI] toward MS II: Ionization Fraction High ...

Galactic Spiral Structure in H I Emission and Self-Absorption S. J. Gibson (NAIC) H I Self-Absorption (HISA) occurs when cold H I lies in front of warmer H I emission (HIE) at the same radial velocity. The map and spectra AT LEF T show HISA in the Perseus spiral arm in the Canadian Galactic Plane Survey (CGPS; Taylor et al. ... The basic components of the model are shown AT LEF T with all 3 types of CNM cells (shock-induced, local, ambient disk), but without lumpy dispersion in the velocity field. ...

... We study the variation of the line width and electron density as a function of height above the north polar coronal hole from forbidden spectral lines of Si VIII. The spectra were obtained with the Solar Ultraviolet Measurement of Emitted Radiation spectrometer flown on the Solar and Heliospheric Observatory spacecraft.The present data show that the non-thermal velocity increases from at 27 arcsec above the limb to some 250 arcsec ( 180,000 km) above the limb. ...

Search of spectral-spatial fluctuations . ... After recombination of hydrogen the one of probable mechanism of formation CMBR fluctuations there can be a scattering by small density inhomogeneities if they have peculiar velocities and opacity for electromagnetic emission. Peculiar velocities of various spatial scale are predicted in all models of evolution. ... For increase the time of accumulation of a signal with our antenna the drift curves near celestial poles were used at declination +89.5 . ...

... 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. ...

... Flux density at 1 GHz (/Jy): 56 . ... Notes: This is the remnant of the Tycho's SN of AD 1572. Radio: Shell, brightest to the NE. ... 1982, MNRAS, 200, 473. ... 1982, ApJ, 257, 145. ... Radio at 2.7 GHz (4'') from 1980 and 1983, and One-Mile Telescope at 1.4 GHz (23'') from 1965 and 1980, for expansion. ... VLA H I absorption observations towards central radio source. ... WSRT and Effelsberg 100-m at 1.4 GHz (50''), and VLA at 1.4 GHz (13''), for neutral hydrogen studies. ... 2010, ApJ, 715, L146. ...

... PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Testing galaxy formation in high density environments - the extended stellar haloes of giant elliptical galaxies . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... The aim of the thesis is to study the dynamics in the extended haloes of the brightest elliptical galaxies, and to unveil the fossil record caused by past accretion events using Planetary Nebulae (PNe). ...