Zobrazeno 1 - 10
of 443
pro vyhledávání: '"S. Aguado"'
Publikováno v:
Sport TK (2016)
The organization of events by the cities have different implications, including that athletes who participate in it can know the city and may have intentions of returning to it as tourists or recommend it. This work aims to analyze the predictors of
Externí odkaz:
https://doaj.org/article/e9ef4ab803c842cd82222b2eed587fb1
Autor:
Ása Skúladóttir, Ioanna Koutsouridou, Irene Vanni, Anish M. Amarsi, Romain Lucchesi, Stefania Salvadori, David S. Aguado
Publikováno v:
The Astrophysical Journal Letters, Vol 968, Iss 2, p L23 (2024)
The first (Population III) stars formed only out of H and He and were likely more massive than present-day stars. Massive Population III stars in the range 140–260 M _⊙ are predicted to end their lives as pair-instability supernovae (PISNe), enri
Externí odkaz:
https://doaj.org/article/d3bf49c1ab2a430d86827efcb4248de0
Autor:
Carlos Allende Prieto, David S. Aguado, Jonay I. González Hernández, Rafael Rebolo, Joan Najita, Christopher J. Manser, Constance Rockosi, Zachary Slepian, Mar Mezcua, Monica Valluri, Rana Ezzeddine, Sergey E. Koposov, Andrew P. Cooper, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Katia Cunha, Siwei Zou, Jessica Nicole Aguilar, Steven Ahlen, David Brooks, Todd Claybaugh, Shaun Cole, Sarah Eftekharzadeh, Kevin Fanning, Jaime Forero-Romero, Satya Gontcho A Gontcho, Klaus Honscheid, Pascale Jablonka, Robert Kehoe, Theodore Kisner, Martin Landriau, Axel de la Macorra, Aaron Meisner, Ramón Miquel, John Moustakas, Jundan Nie, Claire Poppett, Francisco Prada, Mehdi Rezaie, Graziano Rossi, Eusebio Sánchez, Michael Schubnell, Ray Sharples, Malgorzata Siudek, Verne V. Smith, Gregory Tarlé, Fiorenzo Vincenzo, Benjamin Alan Weaver, Zhimin Zhou, Hu Zou
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 2, p 76 (2023)
The observations from the Dark Energy Spectroscopic Instrument (DESI) will significantly increase the numbers of known extremely metal-poor stars by a factor of ∼10, improving the sample statistics to study the early chemical evolution of the Milky
Externí odkaz:
https://doaj.org/article/f8ae4b04a7394e6fa3dcda873efa51aa
Autor:
Callum E C Witten, David S Aguado, Jason L Sanders, Vasily Belokurov, N Wyn Evans, Sergey E Koposov, Carlos Allende Prieto, Francesca De Angeli, Mike J Irwin
Publikováno v:
Witten, C E C, Aguado, D S, Sanders, J L, Belokurov, V, Evans, N W, Koposov, S E, Prieto, C A, Angeli, F D & Irwin, M J 2022, ' Information content of BP/RP spectra in Gaia DR3 ', Monthly Notices of the Royal Astronomical Society, vol. 516, no. 3, pp. 3254-3265 . https://doi.org/10.1093/mnras/stac2273
Gaia Data Release 3 has provided the astronomical community with the largest stellar spectroscopic survey to date ($>$ 220 million sources). The low resolution (R$\sim$50) blue photometer (BP) and red photometer (RP) spectra will allow for the estima
Autor:
Raphaël Errani, Julio F Navarro, Rodrigo Ibata, Nicolas Martin, Zhen Yuan, David S Aguado, Piercarlo Bonifacio, Elisabetta Caffau, Jonay I González Hernández, Khyati Malhan, Rubén Sánchez-Janssen, Federico Sestito, Else Starkenburg, Guillaume F Thomas, Kim A Venn
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 514, 3532-3540. Oxford University Press
The recently discovered C-19 stellar stream is a collection of kinematically associated metal-poor stars in the halo of the Milky Way lacking an obvious progenitor. The stream spans an arc of ~15 degrees in the sky, and orbit-fitting suggests an apoc
Autor:
Anke Arentsen, Vinicius M Placco, Young Sun Lee, David S Aguado, Nicolas F Martin, Else Starkenburg, Jinmi Yoon
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 515, 4082-4098. Oxford University Press
Carbon-enhanced metal-poor (CEMP) stars are a unique resource for Galactic archaeology because they probe the properties of the First Stars, early chemical evolution and binary interactions at very low metallicity. Comparing the fractions and propert
Autor:
L Mashonkina, A Arentsen, D S Aguado, A Smogorzhevskii, M Hampel, A I Karakas, F Sestito, N F Martin, K A Venn, J I González Hernández
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
Well-studied very metal-poor (VMP, [Fe/H] < -2 ) stars in the inner Galaxy are few in number, and they are of special interest because they are expected to be among the oldest stars in the MilkyWay. We present high-resolution spectroscopic follow-up
Autor:
Zhen Yuan, Nicolas F Martin, Rodrigo A Ibata, Elisabetta Caffau, Piercarlo Bonifacio, Lyudmila I Mashonkina, Raphaël Errani, Amandine Doliva-Dolinsky, Else Starkenburg, Kim A Venn, Anke Arentsen, David S Aguado, Michele Bellazzini, Benoit Famaey, Morgan Fouesneau, Jonay I González Hernández, Pascale Jablonka, Carmela Lardo, Khyati Malhan, Julio F Navarro, Rubén Sánchez Janssen, Federico Sestito, Guillaume F Thomas, Akshara Viswanathan, Sara Vitali
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 514, 1664-1671. Oxford University Press
The C-19 stream is the most metal poor stellar system ever discovered, with a mean metallicity $[Fe/H] = -3.38\pm0.06$. Its low metallicity dispersion ($\sigma_{\rm [Fe/H]}$ $
Comment: 7 pages, 6 figures, accepted to MNRAS. The C-19 member list
Comment: 7 pages, 6 figures, accepted to MNRAS. The C-19 member list
Autor:
D S Aguado, S Salvadori, Á Skúladóttir, E Caffau, P Bonifacio, I Vanni, V Gelli, I Koutsouridou, A M Amarsi
The very massive first stars ($m>100\rm M_{\odot}$) were fundamental to the early phases of reionization, metal enrichment, and super-massive black hole formation. Among them, those with $140\leq\rm m/\rm M_{\odot}\leq260$ are predicted to evolve as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bbebcd9352f40cd06d1c02fd55c107f0
http://arxiv.org/abs/2301.03604
http://arxiv.org/abs/2301.03604
Autor:
Anke Arentsen, David S Aguado, Federico Sestito, Jonay I González Hernández, Nicolas F Martin, Else Starkenburg, Pascale Jablonka, Zhen Yuan
Ultra metal-poor stars ([Fe/H] < -4.0) are very rare, and finding them is a challenging task. Both narrow-band photometry and low-resolution spectroscopy have been useful tools for identifying candidates, and in this work we combine both approaches.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa753a23e072bfe7383eb3f55d3dc837