Barium and related stars, and their white-dwarf companions. II. Main-sequence and subgiant stars

Autor: Alain Jorissen, S. Shetye, Joanna Mikolajewska, Henri M. J. Boffin, Cole Johnston, R. Manick, Lionel Siess, H. Van Winckel, Dimitri Pourbaix, D. Karinkuzhi, Ana Escorza, Brent Miszalski, Michael Abdul-Masih, Pierre North, Glenn-Michael Oomen

Publikováno v: Astronomy & astrophysics, 626
Astronomy & Astrophysics, 626, pp. 1-23
Astronomy & Astrophysics, 626, 1-23

Barium (Ba) dwarfs and CH subgiants are the less evolved analogues of Ba and CH giants. They are F-to G-Type main-sequence stars polluted with heavy elements by their binary companions when the companion was on the asymptotic giant branch (AGB). This

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f21d400967e71460501362dcaa353678
https://hdl.handle.net/2066/205233

The Pristine survey X: a large population of low-metallicity stars permeates the Galactic disk

Autor: Pedro A. Palicio, Thomas G. Wilson, Jonay I. González Hernández, R. Lucchesi, Kim A. Venn, Nicolas F. Martin, Nicolas Longeard, Kristopher Youakim, G. Kordopatis, Yeisson Osorio, Eline Tolstoy, David Aguado, Lee Patrick, Rodrigo A. Ibata, Anke Arentsen, Raymond G. Carlberg, Guillame Thomas, Spencer Bialek, Julio F. Navarro, Federico Sestito, Pascale Jablonka, Rafael Garcia-Dias, Khyati Malhan, Vanessa Hill, Rubén Sánchez-Janssen, Else Starkenburg, Pierre North, Luis Peralta de Arriba, Collin Kielty

Publikováno v: Monthly Notices of the Royal Astronomical Society: Letters
Monthly Notices of the Royal Astronomical Society: Letters, Oxford Journals, 2020, 497 (1), pp.L7-L12. ⟨10.1093/mnrasl/slaa022⟩
Monthly Notices of the Royal Astronomical Society, 497, L7-L12. Oxford University Press

The orbits of the least chemically enriched stars open a window on the formation of our Galaxy when it was still in its infancy. The common picture is that these low-metallicity stars are distributed as an isotropic, pressure-supported component sinc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c29b92f1353c79da64d3acfc92aaccc
http://arxiv.org/abs/1911.08491

Lyman-alpha As an Astrophysical and Cosmological Tool : Saas-Fee Advanced Course 46. Swiss Society for Astrophysics and Astronomy

Autor: Mark Dijkstra, J. Xavier Prochaska, Masami Ouchi, Matthew Hayes, Anne Verhamme, Pierre North, Sebastiano Cantalupo, Hakim Atek

The hydrogen Lyman-alpha line is of utmost importance to many fields of astrophysics. This UV line being conveniently redshifted with distance to the visible and even near infrared wavelength ranges, it is observable from the ground, and provides the

Automated analysis of eclipsing binary light curves - I. EBAS - a new Eclipsing Binary Automated Solver with ebop

Autor: Omer Tamuz, Tsevi Mazeh, Pierre North

We present a new algorithm -- Eclipsing Binary Automated Solver (EBAS), to analyse lightcurves of eclipsing binaries. The algorithm is designed to analyse large numbers of lightcurves, and is therefore based on the relatively fast EBOP code. To facil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8824b4e76ce8fd4cb9a7686762b3c74
http://doc.rero.ch/record/303925/files/mnras0367-1521.pdf

MUSE-inspired view of the quasar Q2059-360, its Lyman alpha blob, and its neighborhood

Autor: Sebastiano Cantalupo, Anne Verhamme, Raffaella Anna Marino, C. Gorgoni, D. Chelouche, Pierre North, Frederic Courbin, Matthew Hayes, Dominique Sluse

Publikováno v: Astronomy & Astrophysics, 604

The radio-quiet quasar Q2059-360 at redshift $z=3.08$ is known to be close to a small Lyman $\alpha$ blob (LAB) and to be absorbed by a proximate damped Ly$\alpha$ (PDLA) system. Here, we present the Multi Unit Spectroscopic Explorer (MUSE) integral

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ca91e185cd265b39b84d0c27c0bc484
http://arxiv.org/abs/1705.05728