Výsledky vyhledávání - "R.-D. Scholz"

Potential Detection of Secular Evolution of Chemical Abundances on the Surface of the HgMn Primary in the Triple System χ Lup

Autor: J. F. González, S. P. Järvinen, H. Korhonen, C. A. Hummel, I. V. Ilyin, R.-D. Scholz, S D Chojnowski, M. Schöller, S. Hubrig

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Se dectriben las detecciones en: HgMn Primary in the Triple System χ Lup realizadas con instrumentos del CASLEO. Fil: Järvinen, Silva. Leibniz Institute For Astrophysics Potsdam; Alemania Fil: Chojnowski, Drew. New Mexico State University.; Estados

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92a9acacece58a790b011b37ad781b2c
https://iopscience.iop.org/article/10.3847/2515-5172/ab6bd2

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A magnetic study of the δ Scuti variable HD 21190 and the close solar-type background star CPD −83°64B

Autor: Ilya Ilyin, Swetlana Hubrig, E. Niemczura, Silva P. Järvinen, R.-D. Scholz, Markus Schöller

Publikováno v: Monthly Notices of the Royal Astronomical Society. 481:5163-5169

HD 21190 is a known $\delta$ Scuti star showing Ap star characteristics and a variability period of 3.6 h discovered by the Hipparcos mission. Using Gaia DR1 data for an astrometric analysis, it was recently suggested that HD 21190 forms a physical b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58ed2f19ea8e09e95ef6928f1558716c
https://doi.org/10.1093/mnras/sty2648

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Rotationally modulated variability and pulsations of the He-rich star CPD −62°2124 with an extraordinarily strong magnetic field

Autor: Ilya Ilyin, R.-D. Scholz, Miloslav Zejda, Markus Schöller, Swetlana Hubrig, Silva P. Järvinen, A. F. Kholtygin, Zdenek Mikulasek

Publikováno v: Monthly Notices of the Royal Astronomical Society. 472:400-408

A longitudinal magnetic field with a strength of 5.2kG was recently detected in CPD -62 2124, which has a fractional main-sequence lifetime of about 60%. Strongly magnetic early-B type chemically peculiar stars in an advanced evolutionary state are o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5739d1bff77a54d5375fe1794579ec0
https://doi.org/10.1093/mnras/stx1994

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Spectroscopic classification and Gaia DR2 parallaxes of new nearby white dwarfs among selected blue proper motion stars

Autor: H. Jahreiß, Helmut Meusinger, R. D. Scholz, A. Schwope, I. Pelisoli

AIMS: With our low-resolution spectroscopic observing program for selected blue proper motion stars, we tried to find new white dwarfs (WDs) in the solar neighbourhood. METHODS: We used the LSPM catalogue with a lower proper motion limit of 150mas/yr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d01a099396bab374fa1760c8b9dacc27

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Identification of globular cluster stars in RAVE data – I. Application to stellar parameter calibration

Publikováno v: Monthly Notices of the Royal Astronomical Society. 451:1229-1246

We present the identification of potential members of nearby Galactic globular clusters using radial velocities from the RAdial Velocity Experiment Data Release 4 (RAVE-DR4) survey database. Our identifications are based on three globular clusters --

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8287890b939ecdfc00134a62f42a085c
https://doi.org/10.1093/mnras/stv800

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Magnetic field geometry and chemical abundance distribution of the He-strong star CPD -57 3509

Autor: Stefan Kimeswenger, R.-D. Scholz, M. Ramolla, Swetlana Hubrig, A. F. Kholtygin, Silva P. Järvinen, Ilya Ilyin, Norbert Przybilla, Maryline Briquet, Markus Schöller, Heidi Korhonen, M.-F. Nieva

The magnetic field of CPD -57 3509 was recently detected in the framework of the BOB (B fields in OB stars) collaboration. We acquired low-resolution spectropolarimetric observations of CPD -57 3509 with FORS2 and high-resolution UVES observations ra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5ea0f00369512f9fcdd9abc6c019e05
http://arxiv.org/abs/1707.09017

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An astrometric and spectroscopic study of the $\delta$ Scuti variable HD21190 and its wide companion CPD -83$^{\circ}$ 64B

Autor: Markus Schöller, Swetlana Hubrig, Ilya Ilyin, Silva P. Järvinen, R.-D. Scholz, F. Kahraman Aliçavuş, E. Niemczura

Although pulsations of $\delta$ Scuti type are not expected among Ap stars from a theoretical point of view, previous observations of the known $\delta$ Scuti star HD21190 indicated a spectral classification F2 III SrEuSi:, making it the most evolved

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ba0b5b56cd3d5f5de2d10af4e0f5ec8
http://arxiv.org/abs/1707.00632

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Strongly magnetic Ap stars in the Gaia DR2 Hertzsprung-Russell diagram

Autor: Swetlana Hubrig, S. Drew Chojnowski, R.-D. Scholz

Publikováno v: Astronomy & Astrophysics. 628:A81

Context. Knowing the distribution of strongly magnetic Ap stars in the Hertzsprung-Russell diagram (HRD) allows us to study the evolution of their magnetic fields across the main sequence (MS). With a newly extended Ap star sample from APOGEE and ava

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd0cfd70601007bcf80efe37dd6ac1ab
https://doi.org/10.1051/0004-6361/201935752

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