Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32138
DC Field | Value | Language |
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dc.contributor.author | Zucker, Daniel B. | en_US |
dc.contributor.author | Simpson, Jeffrey D. | en_US |
dc.contributor.author | Martell, Sarah L. | en_US |
dc.contributor.author | Lewis, Geraint F. | en_US |
dc.contributor.author | Casey, Andrew R. | en_US |
dc.contributor.author | Ting, Yuan-Sen | en_US |
dc.contributor.author | Horner, Jonathan | en_US |
dc.contributor.author | Nordlander, Thomas | en_US |
dc.contributor.author | Wyse, Rosemary F. G. | en_US |
dc.contributor.author | Zwitter, Tomaž | en_US |
dc.contributor.author | Bland-Hawthorn, Joss | en_US |
dc.contributor.author | Buder, Sven | en_US |
dc.contributor.author | Asplund, Martin | en_US |
dc.contributor.author | De Silva, Gayandhi M. | en_US |
dc.contributor.author | D'ORAZI, VALENTINA | en_US |
dc.contributor.author | Freeman, Ken C. | en_US |
dc.contributor.author | Hayden, Michael R. | en_US |
dc.contributor.author | Kos, Janez | en_US |
dc.contributor.author | Lin, Jane | en_US |
dc.contributor.author | Lind, Karin | en_US |
dc.contributor.author | Schlesinger, Katharine J. | en_US |
dc.contributor.author | Sharma, Sanjib | en_US |
dc.contributor.author | Stello, Dennis | en_US |
dc.date.accessioned | 2022-05-31T14:19:05Z | - |
dc.date.available | 2022-05-31T14:19:05Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32138 | - |
dc.description.abstract | The results from the ESA Gaia astrometric mission and deep photometric surveys have revolutionized our knowledge of the Milky Way. There are many ongoing efforts to search these data for stellar substructure to find evidence of individual accretion events that built up the Milky Way and its halo. One of these newly identified features, called Nyx, was announced as an accreted stellar stream traveling in the plane of the disk. Using a combination of elemental abundances and stellar parameters from the GALAH and Apache Point Observatory Galactic Evolution Experiment (APOGEE) surveys, we find that the abundances of the highest likelihood Nyx members are entirely consistent with membership of the thick disk, and inconsistent with a dwarf galaxy origin. We conclude that the postulated Nyx stream is most probably a high-velocity component of the Milky Way's thick disk. With the growing availability of large data sets including kinematics, stellar parameters, and detailed abundances, the probability of detecting chance associations increases, and hence new searches for substructure require confirmation across as many data dimensions as possible. | en_US |
dc.language.iso | eng | en_US |
dc.title | The GALAH Survey: No Chemical Evidence of an Extragalactic Origin for the Nyx Stream | en_US |
dc.identifier.doi | 10.3847/2041-8213/abf7cd | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 912 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | L30 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.identifier.adsbibcode | 2021ApJ...912L..30Z | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0002-2662-3762 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Zucker_2021_ApJL_912_L30.pdf | PDF editoriale | 1.63 MB | Adobe PDF | View/Open |
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