搜索结果: 1-14 共查到“等离子体天体物理学 Type”相关记录14条 . 查询时间(0.47 秒)
Confronting 2D delayed-detonation models with light curves and spectra of Type Ia supernovae
supernovae general
2011/8/24
We compare models for Type Ia supernova (SN Ia) light curves and spectra with an extensive set of observations. The models come from a recent survey of 44 two-dimensional delayed-detonation models com...
Accretion-regulated star formation in late-type galaxies
Accretion-regulated star late-type galaxies
2010/11/15
We develop a four-phase galaxy evolution model in order to study the effect of accretion of extra-galactic gas on the star formation rate (SFR) of a galaxy. Pure self-regulated star formation of isola...
Unification of Luminous Type 1 Quasars through CIV Emission
quasars general quasars emission lines quasars absorption lines line profiles radio continuum galaxies
2010/11/12
Using a sample of 30,000 quasars from the 7th Data Release of the Sloan Dig-ital Sky Survey, we explore the range of properties exhibited by high-ionization,broad emission lines, such as C IV 1549. ...
The Properties of Type Ia Supernova Host Galaxies from the Sloan Digital Sky Survey
galaxies fundamental parameters — galaxies statistics — supernovae general
2010/11/12
We investigate the properties and environments of Type Ia Supernova (SN Ia) host galaxies in
the Stripe 82 of the Sloan Digital Sky Survey-II Supernova Survey centered on the celestial equator.Host g...
Light Curve Analysis of Hipparcos Data for the Massive O-type Eclipsing Binary UW CMa
Light Curve Hipparcos Data Binary UW CMa
2010/11/11
Hipparcos photometric data for the massive O-type binary UWCMa were analysed within the framework of the Roche model. Photometric solutions were obtained for five mass ratios in the q = M2/M1 = 0.5 &#...
On Luminous Blue Variables as the Progenitors of Core-Collapse Supernovae, especially Type IIn Supernovae
circumstellar matter stars: massive stars: mass-loss supernovae
2010/11/16
Luminous blue variable (LBV) stars are very massive, luminous, unstable stars that suffer frequent eruptions. In the last few years, these stars have been proposed as the direct progenitors of some co...
Evidence of major dry mergers at M* > 2 x 10^11 Msun from curvature in early-type galaxy scaling relations?
galaxies formation
2010/11/11
For early-type galaxies, the correlations between stellar mass and size, velocity dis-
persion, surface brightness, color, axis ratio and color-gradient all indicate that two mass scales, M∗ = ...
The mass-loss rates and molecular abundances of S-type AGB stars
mass-loss rates molecular abundances of S-type AGB stars
2010/11/12
The S-type stars are believed to have a C/O-ratio close to unity (within a few percent). They are considered to represent an intermediate evolutionary stage as AGB stars evolve from oxygen-rich M-type...
Multiplicity of late-type B stars with HgMn peculiarity
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/7
Observations at various wavelengths of late B-type stars exhibiting strong overabundances of the chemical elements Hg and Mn in their atmospheres indicate that these stars are frequently found in bina...
A Multi-Wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/4
We focus on determining the underlying physical cause of a Seyfert galaxy's appearance as type a 1.8 or 1.9. Are these "intermediate" Seyfert types typical Seyfert 1 nuclei with reddened broad-line re...
Testing a prediction of the merger origin of early-type galaxies: a correlation between stellar populations and asymmetry
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/29
One of the key predictions of the merger hypothesis for the origin of early-type (elliptical and lenticular) galaxies is that tidally-induced asymmetric structure should correlate with signatures of a...
The Impact of Type Ia Supernova Ejecta on Binary Companions
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/29
We present adaptive mesh refinement (AMR) hydrodynamical simulations of the interaction between Type Ia supernovae and their companion stars within the context of the single-degenerate model.
Nuclei of early-type dwarf galaxies: are they progenitors of UCDs?
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
To address the question of whether the so-called ultra compact dwarf galaxies (UCDs) are the remnant nuclei of destroyed early-type dwarf galaxies (dEs), we analyze the stellar population parameters o...
Type I Migration in Radiatively Efficient Discs
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/23
We study Type I migration of a planet in a radiatively efficient disk using global two dimensional hydrodynamic simulations. The large positive corotation torque is exerted on a planet by an adiabatic...