{ "access": { "embargo": { "active": false, "reason": null }, "files": "public", "record": "public", "status": "open" }, "created": "2019-10-22T07:44:47.802561+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "files": { "count": 1, "enabled": true, "entries": { "the-battery-stars.rc.fits": { "checksum": "md5:4655dc61d60a55ca4a98135cd91dd2ba", "ext": "fits", "id": "59320311-385d-43dc-984b-c22d4ef9d521", "key": "the-battery-stars.rc.fits", "metadata": null, "mimetype": "application/octet-stream", "size": 483840 } }, "order": [], "total_bytes": 483840 }, "id": "3515777", "is_draft": false, "is_published": true, "links": { "access": "https://zenodo.org/api/records/3515777/access", "access_links": "https://zenodo.org/api/records/3515777/access/links", "access_request": "https://zenodo.org/api/records/3515777/access/request", "access_users": "https://zenodo.org/api/records/3515777/access/users", "archive": "https://zenodo.org/api/records/3515777/files-archive", "archive_media": "https://zenodo.org/api/records/3515777/media-files-archive", "communities": "https://zenodo.org/api/records/3515777/communities", "communities-suggestions": "https://zenodo.org/api/records/3515777/communities-suggestions", "doi": "https://doi.org/10.5281/zenodo.3515777", "draft": "https://zenodo.org/api/records/3515777/draft", "files": "https://zenodo.org/api/records/3515777/files", "latest": "https://zenodo.org/api/records/3515777/versions/latest", "latest_html": "https://zenodo.org/records/3515777/latest", "media_files": "https://zenodo.org/api/records/3515777/media-files", "parent": "https://zenodo.org/api/records/3515776", "parent_doi": "https://zenodo.org/doi/10.5281/zenodo.3515776", "parent_html": "https://zenodo.org/records/3515776", "requests": "https://zenodo.org/api/records/3515777/requests", "reserve_doi": "https://zenodo.org/api/records/3515777/draft/pids/doi", "self": "https://zenodo.org/api/records/3515777", "self_doi": "https://zenodo.org/doi/10.5281/zenodo.3515777", "self_html": "https://zenodo.org/records/3515777", "self_iiif_manifest": "https://zenodo.org/api/iiif/record:3515777/manifest", "self_iiif_sequence": "https://zenodo.org/api/iiif/record:3515777/sequence/default", "versions": "https://zenodo.org/api/records/3515777/versions" }, "media_files": { "count": 0, "enabled": false, "entries": {}, "order": [], "total_bytes": 0 }, "metadata": { "creators": [ { "affiliations": [ { "name": "Monash University" } ], "person_or_org": { "family_name": "Casey", "given_name": "Andrew R.", "name": "Casey, Andrew R.", "type": "personal" } } ], "description": "
Theoretical models of stellar evolution predict that most of the lithium inside a star is destroyed as the star becomes a red giant. However, observations reveal that about 1% of red giants are peculiarly rich in lithium, often exceeding the amount in the interstellar medium or predicted from the Big Bang. With only about 150 lithium-rich giants discovered in the past four decades, and no distinguishing properties other than lithium enhancement, the origin of lithium-rich giant stars is one of the oldest problems in stellar astrophysics. Here we report the discovery of 2,330 low-mass (1 to 3$\\,M_\\odot$) lithium-rich giant stars, which we argue are consistent with internal lithium production that is driven by tidal spin-up by a binary companion. Our sample reveals that most lithium-rich giants have helium-burning cores ($80^{+7}_{-6}\\%$), and that the frequency of lithium-rich giants rises with increasing stellar metallicity. We find that while planet accretion may explain some lithium-rich giants, it cannot account for the majority that have helium-burning cores. We rule out most other proposed explanations as the primary mechanism for lithium-rich giants, including all stages related to single star evolution. Our analysis shows that giants remain lithium-rich for only about two million years. A prediction from this lithium depletion timescale is that most lithium-rich giants with a helium-burning core have a binary companion.
", "publication_date": "2019-10-22", "publisher": "Zenodo", "related_identifiers": [ { "identifier": "10.3847/1538-4357/ab27bf", "relation_type": { "id": "issupplementto", "title": { "de": "Erg\u00e4nzt", "en": "Is supplement to" } }, "resource_type": { "id": "publication-article", "title": { "de": "Zeitschriftenartikel", "en": "Journal article" } }, "scheme": "doi" } ], "resource_type": { "id": "dataset", "title": { "de": "Datensatz", "en": "Dataset" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "title": "Catalog of 2,330 lithium-rich giant stars" }, "parent": { "access": { "owned_by": { "user": 5681 } }, "communities": {}, "id": "3515776", "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.3515776", "provider": "datacite" } } }, "pids": { "doi": { "client": "datacite", "identifier": "10.5281/zenodo.3515777", "provider": "datacite" }, "oai": { "identifier": "oai:zenodo.org:3515777", "provider": "oai" } }, "revision_id": 4, "stats": { "all_versions": { "data_volume": 17418240.0, "downloads": 36, "unique_downloads": 34, "unique_views": 246, "views": 256 }, "this_version": { "data_volume": 17418240.0, "downloads": 36, "unique_downloads": 34, "unique_views": 246, "views": 256 } }, "status": "published", "updated": "2020-01-24T19:22:53.984397+00:00", "versions": { "index": 1, "is_latest": true } }