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2 edition of survey of the nuclear emission line spectra of field cluster disk galaxies found in the catalog.

survey of the nuclear emission line spectra of field cluster disk galaxies

John Richard Stauffer

survey of the nuclear emission line spectra of field cluster disk galaxies

by John Richard Stauffer

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Published by University of California, Berkeley in Berkeley, Calif .
Written in English


Edition Notes

Thesis (Ph.D.)--University of California, Berkeley, 1981.

Statementby John Richard Stauffer.
ID Numbers
Open LibraryOL14853181M

  2. Deep spectra of disk galaxies as a function of radius 3 3. Multi-wavelength properties of HI selected galaxies 4 4. Extended Ultraviolet Disks in HI selected galaxies 4 5. Angular Momentum and Spin in HI Selected Galaxies 5 6. The Search for Isolated HII Regions in SINGG 5 7. Cluster formation and destruction in disk galaxies 6 A map of our galaxy deduced from radio observations of the 21 centimeter line emission from cool hydrogen gas reveals Even though the Hubble law for galactic motions indicated that the spectra of all galaxies should show redshift as a consequence of the general expansion of the universe, the Andromeda Galaxy M31 appears to show a blueshift

Group, field and isolated early-type galaxies - I. Observations and nuclear data This is the first paper of a series on the investigation of stellarpopulation properties and galaxy evolution of an observationallyhomogeneous sample of early-type galaxies in groups, field and we present high signal-to-noise ratio (S/N) long ?object_type=1&object_id=&object_name=16+CrB&locale=CA. We present the results of a magnetic survey of a sample of eightβCephei stars and 26 slowly pulsating B (SPBs) stars with the FOcalReducer low dispersion Spectrograph at the Very Large Telescope. A weakmean longitudinal magnetic field of the order of a few hundred Gauss isdetected in the βCephei star ξ1CMa and in 13 ?object_type=1&object_id=&object_name=8+Cep&locale=CA.

We present grism spectra of emission-line galaxies (ELGs) from to {mu}m from the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope. These new infrared grism data augment previous optical Advanced Camera for Surveys GL {mu}m grism data in GOODS-South from the PEARS program, extending the wavelength coverage well past Group, field and isolated early-type galaxies - I. Observations and nuclear data This is the first paper of a series on the investigation of stellarpopulation properties and galaxy evolution of an observationallyhomogeneous sample of early-type galaxies in groups, field and we present high signal-to-noise ratio (S/N) long-slit spectroscopyof 86 nearby elliptical and S0 ?object_type=1&object_id=&object_name=4+CMi&locale=TR.


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Survey of the nuclear emission line spectra of field cluster disk galaxies by John Richard Stauffer Download PDF EPUB FB2

Flux calibrated, digital spectra for the nuclei of approximately field and cluster disk galaxies were obtained and analyzed. High signal-to-noise spectra for a sample of those galaxy nuclei were employed to determine gas metallicities and velocity dispersions and the dominant excitation mechanisms responsible for the observed nuclear emission :// S/abstract.

A survey of the nuclear emission line spectra of field and cluster disk galaxies Flux-calibrated, digital spectra for the nuclei of field disk galaxies were obtained for this program. Absorption and emission line equivalent widths, as well as nuclear colors and magnitudes, have been determined from those spectra.

The emission line data provide the basis for the estimation of median H-alpha equivalent widths as a function of morphological type and nuclear :// S/abstract. The Sloan Digital Sky Survey (SDSS) Galaxy Zoo project has revealed a number of spectacular galaxies possessing extended emission-line regions (EELRs), the most famous being Hanny's Voorwerp :// In an objective prism survey of eight nearby Abell clusters, we have detected Hα emission from 77 out of a total of CGCG spiral galaxies.

We find that detection of Hα emission is approximately independent of galaxy absolute magnitude, distance to the cluster center, and the presence of a bar. However, tidally distorted spirals are much more likely to be detected than undistorted :// LM/abstract.

The combined results of photometric and spectrophotometric surveys of H-alpha emission in field and Virgo cluster galaxies are presented.

In most spiral galaxies the emission is dominated by normal disk H II regions, and consequently the integrated Balmer flux of a galaxy can be used as a quantitative index of its current OB star formation ://   The last 30 years have seen the discovery of complex cluster structures composed of alpha particles in what are called α-conjugate nuclei, that is nuclei with N = Z, which have an even, and equal, number of protons and general, this precipitation of the nuclear liquid drop into more weakly interacting strongly bound droplets reveals highly symmetric structures, and the Broad-Line Seyfert 1 galaxies (BLS1s): Seyfert 1 galaxies with broad emission lines, which appear to follow the normal supermassive black hole to bulge size relationship.

Contrast with NLS1s and see and e.g. arXiv Composite galaxies: These galaxies fall on the border between Seyfert galaxies and LINERs in their emission line :// 1 day ago  Galaxy - Galaxy - Types of galaxies: Almost all current systems of galaxy classification are outgrowths of the initial scheme proposed by the American astronomer Edwin Hubble in In Hubble’s scheme, which is based on the optical appearance of galaxy images on photographic plates, galaxies are divided into three general classes: ellipticals, spirals, and ://   Object name: e.g.: 2dFGRS SZ, NGCNGCUGC2QZ J Extended name search.

Only if input name has 'multiple-components' Never Always Result type: Simplified (with links to details) Detailed only Show slit and spectrum previews. Yes No Number of spectra per page: The impact of the cluster environment on the evolution of dwarf galaxies is investigated by comparing the properties of a sample of dwarf irregulars (dIs) in the Virgo Cluster with a control @article{osti_, title = {THE SINS SURVEY: BROAD EMISSION LINES IN HIGH-REDSHIFT STAR-FORMING GALAXIES}, author = {Shapiro, Kristen L and Quataert, Eliot and Genzel, Reinhard and Foerster Schreiber, Natascha M and Davies, Richard and Tacconi, Linda and Bouche, Nicolas and Buschkamp, Peter and Cresci, Giovanni and Eisenhauer, Frank and As results of this work we have obtained that the UCM survey is specially effective in the detection of ELGs smaller and less luminous than normal spirals (the median values of the UCM sample are M_r = and D_24 = kpc) and that emission arises fundamentally from the nuclear regions of the galaxies (only 22% of the sample show emitting For three galaxies, NGC, NGC, and NGC, we find the presence of a thin (less than 10 parsecs) elongated (~ parsecs) nuclear structure, resembling an edge-on disk, although kinematic Optical emission line images and spectra of sixteen 3CR powerful radio galaxies and quasars are presented.

Extended line emission is detected in both radio galaxies and :// In order to separate nebular emission lines from the underlying stellar contribution, we fit the stellar population model to the SDSS spectra of these S0 galaxies.

According to the BPT diagram, we find that 8% of S0 galaxies show central star-forming activity, while the fractions of Seyfert, Composite, and low-ionization nuclear emission-line L.

Pilyugin's 95 research works with 2, citations and 1, reads, including: Circumnuclear regions of different BPT types in star-forming MaNGA galaxies: AGN detectability A Virgo high-resolution Hα kinematical survey - II. The Atlas A catalogue of ionized gas velocity fields for a sample of 30 spiral andirregular galaxies of the Virgo cluster has been obtained by using 3Doptical data.

The aim of this survey is to study the influence ofhigh-density environments on the gaseous kinematics of local ?object_type=2&object_id=&object_name=VCC+&locale=HE. The inferred line emission region is comparable in size to the maser disk. If the line arises from the disk (e.g., by fluorescence), then it is difficult to understand the variability because the maser emission has not changed substantially.

We do not observe evidence for absorption lines in any XMM or Chandra spectra. [PDF of the poster] line emission. Archival HubbleSpaceTelescope (HST) images reveal that the galaxy contains a bright and compact nuclear star cluster. We present a new high-resolution optical spectrum of this nuclear cluster, obtained with the Echellette Spectrograph and Imager at the Keck Observatory.

The nucleus has a Seyfert 2 emission-line spectrum at. Keywords: Galaxies, nuclei. Introduction. Our WFPC1 survey of a complete sample of Virgo Cluster E and E/S0 galaxies revealed the presence of bright, thin stellar disks in the nuclear regions of several of them (Jaffe et al.van den Bosch et al.Ferrarese et al.

)We use these spectra to determine the elemental composition of the emission line system associated with this source, and to constrain the age and metallicity of the host globular cluster.

For the emission line system of RZ, our analysis indicates the [O III] λ equivalent width is ± Å and the Hβ equivalent width is The hard emission is modelled witha flat absorbed power-law (Γ~NH~ cm-2), and this together with a low-significance (σ)~ eV equivalent width emission line at ~6 keV are the firstindications that NGC may host a low-luminosity ?object=Messier+