Zobrazeno 1 - 10
of 387
pro vyhledávání: '"Rodrigo A Ibata"'
Autor:
Amandine Doliva-Dolinsky, Nicolas F. Martin, Zhen Yuan, Alessandro Savino, Daniel R. Weisz, Annette M. N. Ferguson, Rodrigo A. Ibata, Stacy Y. Kim, Geraint F. Lewis, Alan W. McConnachie, Guillaume F. Thomas
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 1, p 72 (2023)
We build a statistical framework to infer the global properties of the satellite system of the Andromeda galaxy (M31) from the properties of individual dwarf galaxies located in the Pan-Andromeda Archaelogical Survey (PAndAS) and the previously deter
Externí odkaz:
https://doaj.org/article/b2c9a39ffa0a4aaf9a61702c23d08c63
Autor:
Sarah Pearson, Susan E. Clark, Alexis J. Demirjian, Kathryn V. Johnston, Melissa K. Ness, Tjitske K. Starkenburg, Benjamin F. Williams, Rodrigo A. Ibata
Publikováno v:
The Astrophysical Journal, Vol 926, Iss 2, p 166 (2022)
Stellar streams from globular clusters (GCs) offer constraints on the nature of dark matter and have been used to explore the dark matter halo structure and substructure of our Galaxy. Detection of GC streams in other galaxies would broaden this ende
Externí odkaz:
https://doaj.org/article/cb46b311bbd44a60b772ccaaa45f9c8e
Autor:
Nicolas F Martin, Rodrigo A Ibata, Else Starkenburg, Zhen Yuan, Khyati Malhan, Michele Bellazzini, Akshara Viswanathan, David Aguado, Anke Arentsen, Piercarlo Bonifacio, Ray Carlberg, Jonay I González Hernández, Vanessa Hill, Pascale Jablonka, Georges Kordopatis, Carmela Lardo, Alan W McConnachie, Julio Navarro, Rubén Sánchez-Janssen, Federico Sestito, Guillaume F Thomas, Kim A Venn, Sara Vitali, Karina T Voggel
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 516(4), 5331-5354. Oxford University Press
We use the photometric metallicities provided by the panoramic Pristine survey to study the veracity and derive the metallicities of the numerous stellar streams found by the application of the STREAMFINDER algorithm to the Gaia EDR3 data. All 26 str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fd9efff498202a2d7f1f8a742c5649b
https://research.rug.nl/en/publications/3574ab49-bbda-4907-8f5c-691a838178dc
https://research.rug.nl/en/publications/3574ab49-bbda-4907-8f5c-691a838178dc
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fedb0b2e27c71f16c1dc61f4ea781887
https://doi.org/10.1093/mnras/stac1399
https://doi.org/10.1093/mnras/stac1399
Autor:
Nicolas Longeard, Nicolas F. Martin, Pascale Jablonka, Patrick Côté, Rodrigo A. Ibata, Else Starkenburg, David Aguado, Jonay I. González Hernández, Julio F. Navarro, Alan W. McConnachie, Guillaume F. Thomas, Rubén Sánchez-Janssen, Raymond G. Carlberg, Khyati Malhan, Kim Venn, R. Lucchesi
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, ⟨10.1093/mnras/stab604⟩
Monthly Notices of the Royal Astronomical Society, 503(2), 2754-2762. Oxford University Press
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, ⟨10.1093/mnras/stab604⟩
Monthly Notices of the Royal Astronomical Society, 503(2), 2754-2762. Oxford University Press
We present a new spectroscopic study of the faint Milky Way satellite Sagittarius II. Using multiobject spectroscopy from the Fibre Large Array Multi-Element Spectrograph, we supplement the data set of Longeard et al. with 47 newly observed stars, 19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea826569ae1addfba71cf127433d5e2c
http://adsabs.harvard.edu/abs/2020arXiv200505976L
http://adsabs.harvard.edu/abs/2020arXiv200505976L
Autor:
Rodrigo A. Ibata, Nicolas F. Martin, R. Michael Rich, Janet Preston, M. A. Fardal, Michelle L. M. Collins
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 504 (2), pp.3098-3110. ⟨10.1093/mnras/stab957⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 504 (2), pp.3098-3110. ⟨10.1093/mnras/stab957⟩
We present the first comprehensive spectroscopic study of the Andromeda galaxy’s Eastern Extent. This ∼4° long filamentary structure, located 70–90 kpc from the centre of M31, lies perpendicular to Andromeda’s minor axis and the Giant Stella
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93471207f82812fa71ee0bc123da7350
https://doi.org/10.1093/mnras/stab957
https://doi.org/10.1093/mnras/stab957
Autor:
Khyati Malhan, Rodrigo A. Ibata, Sanjib Sharma, Benoit Famaey, Michele Bellazzini, Raymond G. Carlberg, Richard D’Souza, Zhen Yuan, Nicolas F. Martin, Guillaume F. Thomas
The Milky Way halo was predominantly formed by the merging of numerous progenitor galaxies. However, our knowledge of this process is still incomplete, especially in regard to the total number of mergers, their global dynamical properties and their c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::651d8667693857e5e6bd31cfdc80f8fb
http://arxiv.org/abs/2202.07660
http://arxiv.org/abs/2202.07660
Autor:
Nicolas F. Martin, Kim A. Venn, David S. Aguado, Else Starkenburg, Jonay I. González Hernández, Rodrigo A. Ibata, Piercarlo Bonifacio, Elisabetta Caffau, Federico Sestito, Anke Arentsen, Carlos Allende Prieto, Raymond G. Carlberg, Sébastien Fabbro, Morgan Fouesneau, Vanessa Hill, Pascale Jablonka, Georges Kordopatis, Carmela Lardo, Khyati Malhan, Lyudmila I. Mashonkina, Alan W. McConnachie, Julio F. Navarro, Rubén Sánchez-Janssen, Guillaume F. Thomas, Zhen Yuan, Alessio Mucciarelli
Publikováno v:
Nature, 601(7891), 45-48. Nature Publishing Group
Stellar ejecta gradually enrich the gas out of which subsequent stars form, making the least chemically enriched stellar systems direct fossils of structures formed in the early universe. Although a few hundred stars with metal content below one thou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fff3657d91dd74f503505ded2e116e0
Autor:
Emily J E Charles, Michelle L M Collins, R Michael Rich, Justin I Read, Stacy Y Kim, Rodrigo A Ibata, Nicolas F Martin, Scott C Chapman, Eduardo Balbinot, Daniel R Weisz
Andromeda (And) XXV has previously been reported as a dwarf spheroidal galaxy (dSph) with little-to-no dark matter. However, the uncertainties on this result were significant. In this study, we double the number of member stars and re-derive the kine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::001e492b4807d37d10c6ec1957e9c683
https://hal.science/hal-03815558
https://hal.science/hal-03815558
The central density profiles in dwarf galaxy halos depend strongly on the nature of dark matter. Recently, in Malhan et al. (2021), we employed N-body simulations to show that the cuspy cold dark matter (CDM) subhalos predicted by cosmological simula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37edf6126f4eb83679980d63fc12a289