The astrophysical parameters of chemically peculiar stars from automatic methods [PDF]
Astronomy & AstrophysicsThe chemically peculiar (CP) stars of the upper main sequence are excellent astrophysical laboratories for investigating the diffusion, mass loss, rotational mixing, and pulsation in the presence and absence of a stable local magnetic field.
E. Paunzen
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On the first δ Sct–roAp hybrid pulsator and the stability of p and g modes in chemically peculiar A/F stars [PDF]
, 2020 Strong magnetic fields in chemically peculiar A-type (Ap) stars typically suppress low-overtone pressure modes (p modes) but allow high-overtone p modes to be driven. KIC 11296437 is the first star to show both. We obtained and analysed a Subaru spectrum,
S. Murphy +6 more
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Cerium Features in Kilonova Near-infrared Spectra: Implication from a Chemically Peculiar Star [PDF]
Astrophysical Journal, 2023 Observations of the kilonova from the neutron star merger event GW170817 opened a way to study r-process nucleosynthesis directly using neutron star mergers. It is, however, challenging to identify individual elements in kilonova spectra due to a lack of
Masaomi Tanaka +16 more
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Chemically Peculiar A and F Stars with Enhanced s-process and Iron-peak Elements: Stellar Radiative Acceleration at Work [PDF]
Astrophysical Journal, 2020 We present ≳15,000 metal-rich ([Fe/H] > −0.2 dex) A and F stars whose surface abundances deviate strongly from solar abundance ratios and cannot plausibly reflect their birth material composition.
M. Xiang +8 more
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Fundamental parameters and evolutionary status of the magnetic chemically peculiar stars HD 188041 (V1291 Aquilae), HD 111133 (EP Virginis), and HD 204411: spectroscopy versus interferometry [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The determination of fundamental parameters of stars is one of the main tasks of astrophysics. For magnetic chemically peculiar stars, this problem is complicated by the anomalous chemical composition of their atmospheres, which requires special ...
Anna Romanovskaya +6 more
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The CoRoT chemical peculiar target star HD 49310 [PDF]
Astronomy & Astrophysics, 2015 Context: The magnetic chemically peculiar (CP) stars of the upper main sequence are well-suited laboratories for investigating the influence of local magnetic fields on the stellar surface because they produce inhomogeneities (spots) that can be investigated in detail as the star rotates.
Paunzen, Ernst +4 more
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The 5200-Å flux depression of chemically peculiar stars – II. The cool chemically peculiar and λ Bootis stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 After establishing the synthetic ?a photometric system in the first paper of this series, we now present model atmospheres computed with individual abundances for a representative sample of chemically peculiar (CP) stars and either confirm or redetermine their input parameters through comparisons with photometric, spectrophotometric and high-resolution
Kupka, Friedrich +3 more
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Asteroseismology of chemically peculiar stars [PDF]
Communications in Asteroseismology, 2009 Pulsational variability is observed in several types of main sequence stars with anomalous chemical abundances. In this contribution I summarize the relationship between pulsations and chemical peculiarities, giving special emphasis to rapid oscillations in magnetic Ap stars.
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Near infrared light variations of chemically peculiar stars. The SrCrEu stars [PDF]
Astronomy and Astrophysics Supplement Series, 1998 Twenty magnetic Chemically Peculiar (CP2) stars of the SrCrEu subgroup mostly brighter than the 7.5 visual magnitude have been investigated in the near infrared at 1.25, 1.6 and 2.2 μ . The stars HD 3980, HD 24712, HD 49976, HD 83368, HD 96616, HD 98088, HD 118022, HD 125248, HD 148898, HD 203006, and HD 220825 have been found to be variable in the ...
Catalano FA, LEONE, Francesco, Kroll R.
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K2 space photometry reveals rotational modulation and stellar pulsations in chemically peculiar A and B stars [PDF]
Astronomy & Astrophysics, 2018 Context. The physics of magnetic hot stars and how a large-scale magnetic field affects their interior properties is largely unknown. Few studies have combined high-quality observations and modelling of magnetic pulsating stars, known as magneto ...
D. Bowman +5 more
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