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Study of chemically peculiar stars – I. High-resolution spectroscopy and K2 photometry of Am stars in the region of M44

Autor: Santosh Joshi, Otto Trust, E Semenko, P E Williams, P Lampens, P De Cat, L Vermeylen, D L Holdsworth, R A García, S Mathur, A R G Santos, D Mkrtichian, A Goswami, M Cuntz, A P Yadav, M Sarkar, B C Bhatt, F Kahraman Aliçavuş, M D Nhlapo, M N Lund, P P Goswami, I Savanov, A Jorissen, E Jurua, E Avvakumova, E S Dmitrienko, N K Chakradhari, M K Das, S Chowdhury, O P Abedigamba, I Yakunin, B Letarte, D Karinkuzhi

Publikováno v: Joshi, S, Trust, O, Semenko, E, Williams, P E, Lampens, P, De Cat, P, Vermeylen, L, Holdsworth, D L, García, R A, Mathur, S, Santos, A R G, Mkrtichian, D, Goswami, A, Cuntz, M, Yadav, A P, Sarkar, M, Bhatt, B C, Aliçavuş, F K, Nhlapo, M D, Lund, M N, Goswami, P P, Savanov, I, Jorissen, A, Jurua, E, Avvakumova, E, Dmitrienko, E S, Chakradhari, N K, Das, M K, Chowdhury, S, Abedigamba, O P, Yakunin, I, Letarte, B & Karinkuzhi, D 2022, ' Study of chemically peculiar stars-I. High-resolution spectroscopy and K2 photometry of Am stars in the region of M44 ', Monthly Notices of the Royal Astronomical Society, vol. 510, no. 4, pp. 5854-5871 . https://doi.org/10.1093/mnras/stab3158

We present a study based on the high-resolution spectroscopy and K2 space photometry of five chemically peculiar stars in the region of the open cluster M44. The analysis of the high-precision photometric K2 data reveals that the light variations in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a63b2acecc3014793c27f0cec418eb00

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Sr and Ba abundance determinations: comparing machine-learning with star-by-star analyses -- High-resolution re-analysis of suspected LAMOST barium stars

Autor: Thibault Merle, Stéphane Goriely, Lionel Siess, A. Escorza, Alain Jorissen, S. Shetye, H. Van Winckel, S. Van Eck, D. Karinkuzhi

A new large sample of 895 s-process-rich candidates out of 454180 giant stars surveyed by LAMOST at low spectral resolution (R ~ 1800) has been reported by Norfolk et al. (2019; hereafter N19). We aim at confirming the s-process enrichment at the hig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c243e8a7ffe29b60fbf9d07ce092a7b

Low-mass low-metallicity AGB stars as an efficient i-process site explaining CEMP-rs stars

Autor: D. Karinkuzhi, Lionel Siess, Alain Jorissen, S. Van Eck, Thomas Masseron, Ana Escorza, Thibault Merle, Stéphane Goriely

Publikováno v: Astronomy & astrophysics, 645

Among Carbon-Enhanced Metal-Poor (CEMP) stars, some are found to be enriched in s-process elements (CEMP-s), in r-process elements (CEMP-r) or in both s- and r-process elements (CEMP-rs). The origin of the abundance differences between CEMP-s and CEM

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7236f186ac4c1396262e2b7b710d2ea
http://arxiv.org/abs/2010.13620