Serologische Untersuchungen bei mukokutanen Kandidosen im Greisenalter

H, Hauck

doi:10.1007/978-3-642-81671-0_87

Cited by 4 publications

(6 citation statements)

References 6 publications

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“…All types of 'normal' stars were investigated within the Geneva photometric system, from the most massive ones (Goy 1976;Cramer 1993) to the lower main sequence (Eggen 1977) and giants (Korotina et al 1989). The success and capabilities are documented by the investigations of binaries (Barblan et al 1998), Be stars (Burki 1999), chemically peculiar stars of the upper main sequence (Hauck & Curchod 1980;Hauck & North 1982), Population II objects (Hauck 1986), shell stars (Hauck 1987;Hauck & Jaschek 2000), variables of all types (Waelkens 1981;Lampens 1992;Bersier et al 1994;Eyer & Aerts 2000), and weak-lined F-type stars (Hauck et al 1991), just to mention a few of the main star groups.…”

Section: The Geneva Seven-colour Photometric Systemmentioning

confidence: 99%

Catalogue of stars measured in the Geneva seven-colour photometric system

Paunzen

2022

A&A

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Context. The Geneva seven-colour photometric system is successfully applied to the study of various astrophysical objects. It measures the slope of the Paschen continuum, the Balmer discontinuity, and blocking absorption due to hydrogen or metallic lines. One of its greatest strengths is its intrinsic homogeneity. Aims. A new catalogue of the available measurements was generated, 30 years after the last publication. Methods. The identifications for the individual stars were cross-checked on the basis of the Gaia and 2MASS catalogues. The high precision coordinates together with proper motions (if available) are included, for the first time, in the catalogue. Special caution was exercised with binaries and high-proper-motion stars.Results. The catalogue includes 42 911 entries of highly accurate photometry. Conclusions. The data of this catalogue can be used for various applications, such as new calibrations of astrophysical parameters, the standardisation of new observations, and as additional information for ongoing and forthcoming all-sky surveys, such as the Transiting Exoplanet Survey Satellite (TESS).

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Section: The Geneva Seven-colour Photometric Systemmentioning

confidence: 99%

Catalogue of stars measured in the Geneva seven-colour photometric system

Paunzen

2022

A&A

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“…For the spectrum synthesis, we used the atomic line list of Kılıçoglu et al (2016) compiled from Ku- b The data are from Hauck & Curchod (1980). rucz's Line Database 3 , VALD (Piskunov et al 1995;Ryabchikova et al 1997;Kupka et al 1999Kupka et al , 2000, NIST atomic database (Kramida et al 2015), and various available sources of the oscillator strengths.…”

Section: Chemical Abundances From Spectrum Synthesismentioning

confidence: 99%

Behavior of Abundances in Chemically Peculiar Dwarf and Subgiant A-Type Stars: HD 23193 and HD 170920*

Kílíçoǧlu

Çalışkan

Ünal

2018

ApJ

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To understand the origin of the abundance peculiarities of non-magnetic A-type stars, we present the first detailed chemical abundance analysis of a metallic line star HD 23193 (A2m) and an A-type subgiant HD 170920 (A5) which could have been a HgMn star on the main sequence. Our analysis is based on medium (R∼14 000) and high (R∼40 000) resolution spectroscopic data of the stars. The abundance of 18 elements are derived: C, O, Na, Mg, Al, Si, S, Ca, Sc, Ti, Cr, Mn, Fe, Ni, Zn, Sr, Y, and Ba. The masses of HD 23193 and HD 170920 are estimated from evolutionary tracks, as 2.3±0.1 M and 2.9±0.1 M . The ages are found 635±33 Myr for HD 23193 and 480±50 Myr for HD 170920 using isochrones. The abundance pattern of HD 23193 shows deviations from solar values in the iron-peak elements and indicates remarkable overabundances of Sr (1.16), Y (1.03), and Ba (1.24) with respect to the solar abundances. We compare the derived abundances of this moderately rotating (vsini = 37.5 km s −1 ) Am star to the theoretical chemical evolution models including rotational mixing. The theoretically predicted abundances resemble our derived abundance pattern, except for a few elements (Si and Cr). For HD 170920, we find nearly solar abundances, except for C (−0.43), S (0.16), Ti (0.15), Ni (0.16), Zn (0.41), Y (0.57), and Ba (0.97). Its low rotational velocity (vsini = 14.5 km s −1 ), reduced carbon abundance, and enhanced heavy element abundances suggest that the star is most-likely an evolved HgMn star.

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“…First, Popper (1971) stated that the photometric indices of MY Cyg were "among the later Am stars." Second, the B 2 − V 1 temperature index from the Geneva photometry by Hauck & Curchod (1980) equals +0.124, which corresponds to a spectral type of F0 V or F0 III for normal stars (Hauck 1994). Third, in their study of the galactic distributions of the HD stars in the Michigan Spectral Catalogue (Caballero-Nieves et al 2007), the Am stars were shown to have distributions similar to the early F dwarfs and giants.…”

Section: Light and Velocity Solutionsmentioning

confidence: 99%

Orbital Solutions and Absolute Elements of the Eclipsing Binary My Cygni

Tucker

Sowell

Williamon

et al. 2009

The Astronomical Journal

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Differential UBV photoelectric photometry for the eclipsing binary MY Cyg is presented. The Wilson-Devinney program is used to simultaneously solve the three light curves together with previously published radial velocities. A comparison is made with the previous solution found with the Russell-Merrill method. We examine the long-term apsidal motion of this well-detached, slightly eccentric system. We determine absolute dimensions, discuss metallicity/Am-star issues, and estimate the evolutionary status of the stars.

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Serologische Untersuchungen bei mukokutanen Kandidosen im Greisenalter

Cited by 4 publications

References 6 publications

Catalogue of stars measured in the Geneva seven-colour photometric system

Catalogue of stars measured in the Geneva seven-colour photometric system

Behavior of Abundances in Chemically Peculiar Dwarf and Subgiant A-Type Stars: HD 23193 and HD 170920*

Orbital Solutions and Absolute Elements of the Eclipsing Binary My Cygni

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