Zobrazeno 1 - 10 of 50 pro vyhledávání: '"Klaus Fuhrmann"'
1
On ancient solar-type stars – II
Autor: Rolf Chini, Klaus Fuhrmann
Publikováno v: Monthly Notices of the Royal Astronomical Society. 501:4903-4916
We report on the progress of our survey on ancient solar-type stars down to main-sequence effective temperatures Teff ≥ 5300 K and within 42 pc of the Sun. High signal-to-noise, high-resolution spectroscopy is presented for a second major subset of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::70a18a1781e1d0d03087c9a9092a4724
https://doi.org/10.1093/mnras/staa3942
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2
On the Brightest Horizontal Branch Population II Star γ Piscium
Autor: Klaus Fuhrmann, Rolf Chini
Publikováno v: Research Notes of the AAS. 6:14
The bright star γ Psc is among the nearest Population II giants located in the red clump region. Here we demonstrate that γ Psc is actually a core-helium burning horizontal branch star. As such, the τ ≃ 12 Gyr old γ Psc is found to be slightly
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c22bdbeaff5631c4f30179b37058f556
https://doi.org/10.3847/2515-5172/ac4a78
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3
The barium-to-iron enrichment versus age relation of ancient disc stars
Autor: R. Lachaume, L. Kaderhandt, Klaus Fuhrmann, Zu-Cheng Chen, Rolf Chini
Publikováno v: Monthly Notices of the Royal Astronomical Society. 471:3768-3774
We report an intrinsically precise relation of the barium-to-iron enrichment as a function of age for a local, volume-complete (N = 30) sample of ancient Population II (tau >= 12 Gyr) and intermediate-disc stars (tau similar or equal to 10 Gyr), whic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e638d95e4d9ff406a9068b8bfab74119
https://doi.org/10.1093/mnras/stx1848
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5
Netzwerk 40+: Vernetzung von Sucht- und Altenhilfe zur Versorgung älterer Drogengebraucher
Autor: Monika Thym, Sylvia Braasch, Davor Stubican, Ulrich Körner, Klaus Fuhrmann, Florian Schäffler, Gudrun Kolb, Manuela Bolz
Publikováno v: Suchttherapie. 19:90-98
ZusammenfassungZiel des Projekts war es, den Anteil von Klientel mit Doppelbelastung (altersassoziierte Problemlagen in der Suchthilfe, Sucht in der Altenhilfe) zu ermitteln sowie die Bedarfe von Mitarbeitenden beider Hilfesysteme zu eruieren.Hierzu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65934d9f85174550ba402a85da28c3ee
https://doi.org/10.1055/s-0043-104455
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6
On the local stellar populations
Autor: Rolf Chini, Lena Kaderhandt, Klaus Fuhrmann, Zhiwei Chen
Publikováno v: Monthly Notices of the Royal Astronomical Society. 464:2610-2621
We present a study of the local stellar populations from a volume-complete all-sky survey of the about 500 bright stars with distances less than 25 pc and down to main-sequence effective temperatures T-eff >= 5300 K. The sample is dominated by a 93 p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c26d0fcecaacac708d29093453fc411a
https://doi.org/10.1093/mnras/stw2526
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7
Discovery of a companion at the brown dwarf limit to the solar-type star Gliese 29
Autor: N. Niedworok, Klaus Fuhrmann, Michael Ramolla, Klaus W. Hodapp, F. Pozo Nuñez, L. Kaderhandt, Rolf Chini
Publikováno v: Astronomische Nachrichten. 337:621-626
Gliese 29 is a 7 to 8 Gyr old, southern Population I turnoff star with a large proper motion of 1″/yr. Using recent direct imaging observations with the 0.8 m Infrared Imaging System (IRIS) of the Universitatssternwarte Bochum near Cerro Armazones
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30deb4cd66583e838af51571eea6e66f
https://doi.org/10.1002/asna.201512309
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8
Evidence for very nearby hidden white dwarfs
Autor: L. Kaderhandt, Zhaoyu Chen, Klaus Fuhrmann, Rolf Chini, R. Lachaume
Publikováno v: Monthly Notices of the Royal Astronomical Society. 459:1682-1686
We report the discovery of a tertiary component to the prominent and nearby (d = 14 pc) visual binary alpha Fornacis. The new invisible component is part of a 4-d short-period Ba-Bb subsystem, whose K-type alpha For Ba primary shows a striking [Ba/Fe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::237ca39e918de3a9aca39134c3ad0450
https://doi.org/10.1093/mnras/stw760
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