stars:pre-main-sequence
Submillimeter lines from circumstellar disks around pre-main sequence stars
... words. stars: circumstellar matter – stars: pre-main sequence – stars: planetary systems: protoplanetary disks – accretion, accretion ...
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Magnetic fields and X ray emission in pre main sequence stars
... Several X-ray observations of AA Tau are available in the literature and show that the star is a highly variable X-ray emitter. It was first observed in X-rays in March 1980 and then again in February 1981 using the ...
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Magnetic fields and differential rotation on the pre-main sequence - III. The early-G star HD 106506
... There have been a number of different ways in which differential rotation have been measured. Reiners & Schmitt (2003) have used a Fourier transform method to derive the parameters for rapidly rotating F-type / early ...
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The Keele-Exeter young cluster survey - I. Low-mass pre-main-sequence stars in NGC 2169
... high-mass stars that have undergone nuclear evolution in the Hertzsprung–Russell (HR) diagram, and compared them with ages determined from isochrones which trace the descent of low-mass PMS stars ...
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Magnetic fields in O-, B- and A-type stars on the main sequence
... in pre-main sequence stars, hotter main-sequence stars, and more evolved ...of stars, for instance, in bright main-sequence A-type stars with ...
5
Magnetic fields and differential rotation on the pre-main sequence - II. The early-G star HD 141943 - coronal magnetic field, Halpha emission and differential rotation
... these stars, however how the dynamos in these stars operates is not well ...for stars with shorter rotational ...hotter stars having higher levels of differ- ential rotation) but only weakly ...
11
Pre-main-sequence isochrones - I. The Pleiades benchmark
... MS stars, used their observed SDSS colours to establish their effective temperatures and then folded model at- mospheres of the appropriate temperature through our estimated system responses to find their ...
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The open flux evolution of a solar mass star on the main sequence
... solar-mass stars, convergence occurs at ∼ 1 ...the main sequence, the main agent of angular momentum evolution is magnetized stellar winds that carry angular momentum away from the central ...
11
The open flux evolution of a solar-mass star on the main sequence
... solar-mass stars, convergence occurs at ∼ 1 ...the main sequence, the main agent of angular momentum evolution is magnetized stellar winds that carry angular momentum away from the central ...
11
Magnetic fields and differential rotation on the pre-main sequence - I. The early-G star HD 141943 - brightness and magnetic topologies
... two stars with more dominant polar spots would be expected to more affected by any bias in the latitude distribution between brightness and magnetic fea- tures, but neither star shows any significant disparity in ...
11
Can we predict the global magnetic topology of a pre main sequence star from its position in the Hertzsprung Russell diagram?
... binary stars (Palla & Stahler 2001; Hillenbrand & White 2004) and for single stars with disks (Simon et ...Tauri stars varies from simple and axisymmetric with a strong dipole component to ...
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On chromospheric variations modeling for main sequence stars of G and K spectral classes
... fields on the Sun and Sun-like stars emit Ca II H and K more intensely than areas with less magnetic field pre- sent. So the contrast of Active Regions (AR) emission (where the local magnetic fields are ...
5
On the origin of the correlations between the accretion luminosity and emission line luminosities in pre-main-sequence stars
... with spectral types F and earlier more similar between them in the Balmer region than for later spectral types. Fig. 2 (top-right panel) illustrates the case; the photospheric U–B colour characterizing the Balmer region ...
8
Mid IR spectra of pre main sequence Herbig stars : an explanation for the non detections of water lines
... Herbig stars: veiling due to stronger continuum (Pontoppidan et ...Herbig stars. We know that some disks around Herbig stars are transitional, and in some of these, OH, CO-rovibrational and OI lines ...
13
Comprehensive Analysis of Pre-Charge Sequence in Automotive Battery Systems
... Either pre-charge relay or main relay can be replaced by semiconductor ...with main relay is used for pre-charging action ...the main relay and control the power flow by using stand ...
6
An M Dwarf Companion to an F-type Star in a Young Main-sequence Binary
... common stars in the solar neighborhood, but only a very limited number of these are well-characterized ( Torres 2013 ) ...these stars, stellar models also show systematic discre- pancies in the observed ...
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The shortest period detached white dwarf + main-sequence binary
... two stars close enough to initiate mass transfer from the secondary star to the white ...mass stars (M 0 ...donor stars has been suggested both based on the location of the observed orbital period ...
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Where Stars Form: Inside-out Growth and Coherent Star Formation from HST Hα Maps of 3200 Galaxies across the Main Sequence at 0.7 < z < 1.5
... the main se- quence, although the error bars are large (see Table 2 for val- ...the main sequence perhaps makes more sense in the context of scat- ter driven by longer timescale variations in the ...
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THE EFFECT OF COSMIONS ON THE STABILITY OF MAIN SEQUENCE STELLAR CORES
... the stars, distribution [4,12,13,16], their candidates [14,18], their evaporation [11] and their pair annihilation [4] and so ...of main sequence stars of population I in the mass range ...
8
Pre-analytical Phase in Hemostasis: The Main Anomalies and Means to Correct Them
... In addition, the standardization of acceptance criteria for sampling would make it possible to achieve the desired reliability of results. This is the reason why a proper management of non-compliant samples by the staff ...
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