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stars: emission-line

On the origin of the correlations between the accretion luminosity and emission line luminosities in pre-main-sequence stars

On the origin of the correlations between the accretion luminosity and emission line luminosities in pre-main-sequence stars

... of emission lines in the spectral range from the near-UV to the ...the stars are located at a similar distance, which guarantees that the correlations were not artificially stretched when the fluxes are ...

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Spectroscopic Survey of Hα Emission Line Stars Associated with Bright Rimmed Clouds

Spectroscopic Survey of Hα Emission Line Stars Associated with Bright Rimmed Clouds

... α emission line stars associated with fourteen bright rimmed clouds are ...α emission line was detected from 173 ...α emission line with its equivalent width larger than ...

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Modelling mid infrared molecular emission lines from T Tauri stars

Modelling mid infrared molecular emission lines from T Tauri stars

... atomic emission lines of S I, S II, S III, Si II, Fe II, Ne II, Ne III, Ar II and Ar ...the line emission spectra by ray tracing in an efficient, fast and reliable ...Tauri stars concerning ...

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Late type Ca II emission line stars in the Southern Hemisphere

Late type Ca II emission line stars in the Southern Hemisphere

... The purposes of our survey were {a to begin monitoring this sample of southern, active-chromosphere objects in a manner similar to that employed by several earlier northern radio surveys[r] ...

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A spectroscopic study of some early type emission line stars

A spectroscopic study of some early type emission line stars

... :The radial velocity curve of HR1273:The power spectrum of the combined data of HR1273.. :The residuals from the basic velocity curve of HR1273:The radial velocities of HR1713 plotted ag[r] ...

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Emission line diagnostics for accretion and outflows in young very low mass stars and brown dwarfs

Emission line diagnostics for accretion and outflows in young very low mass stars and brown dwarfs

... from line luminosities with the calibrations of [21] (black symbols) and same measurements corrected for the grey extinction induced by the edge-on disk (red symbols); see [27] for ...the emission ...

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Investigating the inner discs of Herbig Ae/Be stars with CO bandhead and Brγ emission

Investigating the inner discs of Herbig Ae/Be stars with CO bandhead and Brγ emission

... Ae/Be stars lie in the mass range between low and high mass young stars, and there- fore offer a unique opportunity to observe any changes in the formation processes that may occur across this ...Ae/Be ...

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OMEGA–OSIRIS mapping of emission line galaxies in A901/2:IV  Extinction of star formation estimators with inclination

OMEGA–OSIRIS mapping of emission line galaxies in A901/2:IV Extinction of star formation estimators with inclination

... Balmer emission from star-forming regions is more extinguished than the stellar continuum of older stars by a factor of two or more (Kennicutt 1983; Calzetti et ...the line-of-sight through cirrus ...

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The Hα Spectroscopy of Classical B-emission Stars

The Hα Spectroscopy of Classical B-emission Stars

... Be stars are variable objects, displaying both short-term and long-term variations in the appearance of their spectral ...Significant line profile variability, such as dips or bumps travelling through the ...

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T Tauri stars : mass accretion and X ray emission

T Tauri stars : mass accretion and X ray emission

... of line profiles from non-axisymmetric accretion flows have been presented by Symington, Harries & Kurosawa (2005a), who model the Hα, Hγ, Paβ and Brγ lines of ...lated line profiles reproduce the ...

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The Circumstellar Environments of B-emission Stars by Optical Interferometry

The Circumstellar Environments of B-emission Stars by Optical Interferometry

... its emission lines (Jones, Sigut, and Marlborough, 2004). Although Be stars are found in both lower- and higher-metallicity environments, with lower metallicity showing higher prevalence of the Be ...

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Cool Wolf-Rayet central stars and their planetary nebulae

Cool Wolf-Rayet central stars and their planetary nebulae

... of stars, suggesting th a t these are ...of stars, using C iv A5471/Hell A5412, since bo th these recom bination hnes are sensitive to ...weak emission lines of many stars, prohibited this ...

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A first catalogue of automatically selected ultraviolet excess sources from the UVEX survey

A first catalogue of automatically selected ultraviolet excess sources from the UVEX survey

... Symbiotic stars (see ...Hα emission line star ...symbiotic stars in the UVEX colour- colour diagrams, see ...Tauri stars (Verbeek et ...symbiotic stars in the Galactic Plane are ...

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A EMISSION LINE IN

A EMISSION LINE IN

... the emission in the HeI 6678 ˚ A line, extend to ...A line has an important diagnostic value of activity close to the stellar ...Be stars often show various periodic phenomena, which can be ...

5

Magnetic fields and X ray emission in pre main sequence stars

Magnetic fields and X ray emission in pre main sequence stars

... As discussed in Section 1.3.2, there is now a sample of CTTSs with published ZDI mag- netograms. This has made it possible to study accretion onto stars with real magnetic field geometries. Gregory et al. (2006b) ...

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Gravity in View of the Theory of Orbiting Binary Stars

Gravity in View of the Theory of Orbiting Binary Stars

... Three years ago, the author presented a paper describing the gravitational forces as a result of anisotropic energy exchange between baryonic matter and quan- tum vacuum [1]. Here, we try to show that the theory of ...

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Neutral-helium line strengths in the early-type stars

Neutral-helium line strengths in the early-type stars

... helium line strengths in the spectral range AA4000-6700 for 14 normal early-type ...available line-broadening theories to a large number of helium lines to ascertain if all lines yield a unique result; the ...

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Uptake of Chlorin e6 Photosensitizer by Polystyrene Diphenyloxazole Poly(N Isopropylacrylamide) Hybrid Nanosystem Studied by Electronic Excitation Energy Transfer

Uptake of Chlorin e6 Photosensitizer by Polystyrene Diphenyloxazole Poly(N Isopropylacrylamide) Hybrid Nanosystem Studied by Electronic Excitation Energy Transfer

... fluorescent emission of PS-PPO-PNIPAM hybrid NS, and this quenching does enhance during about an hour ...donor emission at all emission wavelengths) or reabsorption (that would lead to the quenching ...

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Space telescope and optical reverberation mapping project  IV  Anomalous behavior of the broad ultraviolet emission lines in NGC 5548

Space telescope and optical reverberation mapping project IV Anomalous behavior of the broad ultraviolet emission lines in NGC 5548

... entire emission line light curve according to the measured delay between the emission line and the 1157 Å continuum band as determined for the fi rst 75 days of the HST ...and emission ...

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Velocity resolved reverberation mapping of five bright Seyfert 1 galaxies

Velocity resolved reverberation mapping of five bright Seyfert 1 galaxies

... These programs were designed to meet the criteria de- scribed by Horne et al. (2004) to enable recovery of velocity–delay maps. They were carried out at MDM and partner observatories in 2005 (Bentz et al. 2006a; Denney ...

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