搜索结果: 1-15 共查到“天文学 emission line”相关记录27条 . 查询时间(0.155 秒)
Emission line diagnostics of magnetospheric accretion in young stellar objects
Line emission Stars Accretion Star formation Formation of the accretion flow Stars Magnetic layer
2014/12/9
This thesis seeks to explain the nature of line emission observed in young stellar objects, and to use the lines as diagnostics of the accretion process that is central to star formation. We maintain ...
The Chemical Evolution of Narrow Emission Line Galaxies: the Key to their Formation Processes
galaxy: activity galaxy: formation galaxy: chemical evolution
2011/10/20
Using the largest sample of narrow emission line galaxies available so far, we show that their spectral characteristics are correlated with different physical parameters, like the chemical abundances,...
Extreme Emission Line Galaxies in CANDELS: Broad-Band Selected, Star-Bursting Dwarf Galaxies at z>1
Extreme Emission Galaxies CANDELS: Broad-Band Selected Star-Bursting Dwarf Galaxies
2011/10/17
We identify an abundant population of extreme emission line galaxies (EELGs) at redshift z~1.7 in the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS) imaging from Hubble Space Teles...
Keck Spectroscopy of Faint 3 Lyman Break Galaxies:- Evidence for a Declining Fraction of Emission Line Sources In the Redshift Range 6
Keck Spectroscopy Declining Fraction Emission Line Sources
2011/9/29
Using deep Keck spectroscopy of Lyman break galaxies selected from infrared imaging data taken with WFC3/IR onboard the Hubble Space Telescope, we present new evidence for a reversal in the redshift-d...
The Compton shoulder of the Fe Kalpha fluorescent emission line in active galactic nuclei
The Compton shoulder the Fe Kalpha fluorescent emission line
2011/1/11
We present new, high signal-to-noise ratio results from a Monte Carlo study of the properties of the Compton shoulder of the Fe Kalpha emission line in the toroidal X-ray reprocessor model of Murphy &...
HETDEX pilot survey for emission-line galaxies - I. Survey design, performance, and catalog
galaxies formation galaxies evolution galaxies high-redshift cosmology
2010/11/9
We present a catalog of emission-line galaxies selected solely by their emission-line fluxes using a wide-field integral field spectrograph. This work is partially motivated as a pilot survey for the ...
Monte Carlo simulations of the Nickel K$\alpha$ fluorescent emission line in a toroidal geometry
galaxies active - line formation - radiation mechanism general - scattering - X-rays general
2010/11/12
We present new results from Monte Carlo calculations of the flux and equivalent width(EW) of the Ni K fluorescent emission line in the toroidal X-ray reprocessor model of Murphy & Yaqoob (2009, MNRAS...
On emission-line spectra obtained from evolutionary synthesis models II. Scale-relations and the estimation of mass dependences
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
Aims. In this paper we study the influence of the ionizing cluster mass on the emission line spectrum of Hii regions in order to determine the influence of low mass clusters on the integrated emission...
PAH and Emission Line Ratios in AGN and Starburst Galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
We study the Polycyclic Aromatic Hydrocarbons (PAH) bands, ionic emission lines, and Mid-infrared continuum properties, in a sample of 171 emission line galaxies taken from literature plus 15 new acti...
Dependence of Star Formation Activity On Stellar Mass and Environment From the Redshift One LDSS-3 Emission Line Survey (ROLES)
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
Using the sample from the \it Redshift One LDSS3 Emission line Survey \rm (ROLES), we probe the dependence of star formation rate (SFR) and specific star formation rate (sSFR) as a function of stellar...
Velocity structure in the orion nebula. ii. emission line atlas of partially ionized to fully ionized gas
orion nebula ionized gas Velocity
2009/7/10
Velocity structure in the orion nebula. ii. emission line atlas of partially ionized to fully ionized gas。
Emission line ratios from variable velocity jet models
Emission line ratios variable velocity jet models
2009/6/30
Emission line ratios from variable velocity jet models。
Emission-line galaxy surveys with GTC: The H Universe
GTC The H Universe Emission-line galaxy
2009/6/18
Emission-line galaxy surveys with GTC：The H Universe。
A new interpretation of the low radial velocity Determined from the heii emission line in the galactic Supersoft x-ray source rx j0019.8+2156
low radial velocity Supersoft x-ray heii emission line rx j0019.8+2156
2009/6/17
A new interpretation of the low radial velocity Determined from the heii emission line in the galactic Supersoft x-ray source rx j0019.8+2156。
Galaxy evolution studies observing Emission Line Galaxies with the GTC
Galaxy evolution GTC Emission Line Galaxies
2009/6/12
Galaxy evolution studies observing Emission Line Galaxies with the GTC。