late-type stars
Circular polarization of water masers in the circumstellar envelopes of late type stars
... of stars go through a period of high mass loss at the end of their evolution while climbing the asymp- totic giant branch ...In late type stars, this high mass loss produces a circumstellar ...
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Three-dimensional non-local thermodynamic equilibrium radiative transfer and oxygen abundances in late-type stars
... broadening parameter ξ needed in 1D spectroscopic analyses, while the presence of singly ionised lines also allows constraints on the surface gravity log g (ionisation balance; e.g. Bergemann et al., 2012). Finally, as ...
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86 GHz SiO maser survey of late-type stars in the inner Galaxy. III. Interstellar extinction and colours of the SiO targets
... A proper correction for interstellar extinction is of primary importance for a photometric study of stellar populations in the inner Galaxy, where extinction can be significant even at in- frared wavelengths. ...
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The circumstellar environments of late type stars
... J stars are resident upon the AGB (as suggested by Willems and de Jong 1986, 1988), Lam bert et ...C stars were early-R ...J type C stars w ith silicate dust is linked into the binary model of ...
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86 GHz SiO maser survey of late-type stars in the Inner Galaxy. I. Observational data
... AGB stars and red ...AGB stars have been classified as semi-regular (SR) stars and Mira ...AGB stars may also be classified as long pe- riod variable (LPV) stars, when their periods are ...
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The structures and extents of the chromospheres of late type stars
... recent observations of Villadsen et al. (2014), the first observations of “thermal” emission from solar-type stars. These observations were made using the JVLA, at 34.5 GHz. In the case of τ Cet, a flux ...
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An investigation of molecular opacities for late type stars
... Triatomic Molecules 2.11 Determination of Vibrational Partition Functions of Triatomic Molecules... 2.12 Determination of Total Partition Functions and Equilibrium.[r] ...
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Surface brightness distributions of late type stars
... younger stars of solar mass, their rapid rotation results in a chaotic variability; for older stars (> 2 x 10® years) of solar mass, the magnetic activity shows either a flat or a cyclic ...
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Mass loss from evolved late type stars
... spectral type seems to ...from stars w ith spectral type earlier than F3 can destroy ...spectral type implies th a t the nebula is ...(spectral type B9, Figure ...
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Accurate astrophysical parameters for algol type binary stars
... The best fit solutions to the light curves are shown in Table 3.9 for both the uncorrected and corrected mass ratios. The albedo found for the corrected U solution (1,23±0.23) is curious, but probably reflects the ...
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Orbiting clouds of material at the Keplerian co rotation radius of rapidly rotating low mass WTTs in Upper Sco
... unusual stars are mid-to-late M dwarfs without evidence of active accretion, and with photometric periods generally <1 ...of stars with these sudden light curve morphology shifts, we attribute ...
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An international internet survey of the experiences of 1,714 mothers with a late stillbirth: the STARS cohort study
... The STARS consortium was formed between sev- eral clinicians, academics, researchers, and bereaved parents from Australia, New Zealand, the United Kingdom and the United States of ...
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A Bcool magnetic snapshot survey of solar-type stars
... deviant stars have been further studied using Zeeman–Doppler imaging (ZDI; Semel 1989) to reconstruct their large-scale surface magnetic topologies (Petit et ...these stars (HIP 104214 and HIP 56997), the ...
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Neutral-helium line strengths in the early-type stars
... Population I stars prior to the work of Griem et a l . (1962), have been summarized by Jugaku (1959). On the one hand Unsold (1941a,b, 1942, 1944a,b), Traving (1955, 1957) and Cayrel (1956) had derived an ...
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Model Atmosphere Analysis of Some B Type Stars
... The present analysis will lie on LTE/NLTE grid of syn- thetic spectra. For LTE calculations, we adopted as input models, ATLAS9 grids [8] which consists of 409 models in total, assuming a solar metallicty and a ...
7
A BCool magnetic snapshot survey of solar type stars
... deviant stars have been further studied using Zeeman–Doppler imaging (ZDI; Semel 1989) to reconstruct their large-scale surface magnetic topologies (Petit et ...these stars (HIP 104214 and HIP 56997), the ...
20
A study of early and intermediate type stars at the galactic poles
... Photographic surveys such as those discussed above are invaluable because of th e ir a b il i t y to c o lle c t data on a vast number of stars in a short time, and they y ie ld much important information ...
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The secondary stars in cataclysmic variables and low-mass X-ray binaries
... secondary stars in cataclysmic variables (CVs) and low-mass X-ray binaries (LMXBs), using the new catalogue of Ritter & Kolb as a starting ...spectral type determinations and only 14 reliable mass ...
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A stellar census in globular clusters with MUSE: Binaries in NGC 3201
... Due to mass segregation it is expected that binary systems (which are in total more massive than single stars) will migrate towards the centre of a globular cluster (see Sect. 1). Thus the bi- nary fraction should ...
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Magnetic fields in O-, B- and A-type stars on the main sequence
... sequence stars, hotter main-sequence stars, and more evolved ...of stars, for instance, in bright main-sequence A-type stars with sharp lines (see ...
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