{ "access": { "embargo": { "active": false, "reason": null }, "files": "public", "record": "public", "status": "open" }, "created": "2021-02-24T19:40:01.562493+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "files": { "count": 1, "enabled": true, "entries": { "CS20.5_Poster36x36v1sm.pdf": { "checksum": "md5:3587b5ba511322906327948f061fafbb", "ext": "pdf", "id": "ff3a816a-9265-420d-8dc5-91a0891ce3b6", "key": "CS20.5_Poster36x36v1sm.pdf", "metadata": null, "mimetype": "application/pdf", "size": 3336134 } }, "order": [], "total_bytes": 3336134 }, "id": "4560663", "is_draft": false, "is_published": true, "links": { "access": "https://zenodo.org/api/records/4560663/access", "access_links": "https://zenodo.org/api/records/4560663/access/links", "access_request": "https://zenodo.org/api/records/4560663/access/request", "access_users": "https://zenodo.org/api/records/4560663/access/users", "archive": "https://zenodo.org/api/records/4560663/files-archive", "archive_media": "https://zenodo.org/api/records/4560663/media-files-archive", "communities": "https://zenodo.org/api/records/4560663/communities", "communities-suggestions": "https://zenodo.org/api/records/4560663/communities-suggestions", "doi": "https://doi.org/10.5281/zenodo.4560663", "draft": "https://zenodo.org/api/records/4560663/draft", "files": "https://zenodo.org/api/records/4560663/files", "latest": "https://zenodo.org/api/records/4560663/versions/latest", "latest_html": "https://zenodo.org/records/4560663/latest", "media_files": "https://zenodo.org/api/records/4560663/media-files", "parent": "https://zenodo.org/api/records/4560662", "parent_doi": "https://zenodo.org/doi/10.5281/zenodo.4560662", "parent_html": "https://zenodo.org/records/4560662", "requests": "https://zenodo.org/api/records/4560663/requests", "reserve_doi": "https://zenodo.org/api/records/4560663/draft/pids/doi", "self": "https://zenodo.org/api/records/4560663", "self_doi": "https://zenodo.org/doi/10.5281/zenodo.4560663", "self_html": "https://zenodo.org/records/4560663", "self_iiif_manifest": "https://zenodo.org/api/iiif/record:4560663/manifest", "self_iiif_sequence": "https://zenodo.org/api/iiif/record:4560663/sequence/default", "versions": "https://zenodo.org/api/records/4560663/versions" }, "media_files": { "count": 0, "enabled": false, "entries": {}, "order": [], "total_bytes": 0 }, "metadata": { "additional_descriptions": [ { "description": "Paper submitted to Astronomical Journal", "type": { "id": "notes", "title": { "de": "Anmerkungen", "en": "Notes" } } } ], "creators": [ { "affiliations": [ { "name": "McDonald Observatory" } ], "person_or_org": { "family_name": "G. Fritz Benedict", "name": "G. Fritz Benedict", "type": "personal" } }, { "affiliations": [ { "name": "Lowell Observatory" } ], "person_or_org": { "family_name": "Otto Franz", "name": "Otto Franz", "type": "personal" } }, { "affiliations": [ { "name": "Southern Connecticut State University" } ], "person_or_org": { "family_name": "Elliot Horch", "name": "Elliot Horch", "type": "personal" } }, { "affiliations": [ { "name": "Harvard Smithsonian" } ], "person_or_org": { "family_name": "Guillermo Torres", "name": "Guillermo Torres", "type": "personal" } }, { "affiliations": [ { "name": "Lowell Observatory" } ], "person_or_org": { "family_name": "L. Prato", "name": "L. Prato", "type": "personal" } } ], "description": "
We extend results first announced by Franz et al. (1998), that identified vA351 = H346 in the Hyades as a multiple star system containing a white dwarf. With Hubble Space Telescope Fine Guidance Sensor fringe tracking and scanning, and more recent speckle observations, all spanning 20.7 years, we establish a parallax, relative orbit, and mass fraction for two components, with a period, P = 2.70y and total mass 2.1M\u2299. With ground-based radial velocities, we find that component B consists of BC, two M dwarf stars orbiting with a very short period (PBC = 0.749 days), having a mass ratio MC/MB=0.95. We confirm that the total mass of the system can only be reconciled with the distance and component photometry by including a fainter, higher mass component. The quadruple system consists of three M dwarfs (A,B,C) and one white dwarf (D); MA=0.57M\u2299, MB=0.48M\u2299, and MC=0.45M\u2299. The WD mass, 0.53M\u2299, comes from cooling models, an assumed Hyades age of 670My, and consistency with all previous and derived astrometric, photometric, and RV results. Velocities from Hα and He I emission lines confirm the BC period derived from absorption lines, with similar (HeI) and higher (Hα) velocity amplitudes. We ascribe the larger Hα amplitude to emission from a region each component shadows from the other, depending on the line of sight.
", "publication_date": "2021-02-24", "publisher": "Zenodo", "resource_type": { "id": "poster", "title": { "de": "Poster", "en": "Poster" } }, "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": "The Multiple-component Binary Hyad, vA 351" }, "parent": { "access": { "owned_by": { "user": 199504 } }, "communities": { "default": "3a36ebe6-61f3-417e-a308-74ef84ccb263", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_policy": "open", "review_policy": "open", "visibility": "public" }, "children": { "allow": false }, "created": "2021-01-13T17:28:36.286355+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "3a36ebe6-61f3-417e-a308-74ef84ccb263", "links": {}, "metadata": { "curation_policy": "Contributions are accepted from participants that presented invited plenary session reviews, contributed plenary session talks, short "Haiku" talks and contributed posters. In addition, individual and collective contributions from (parallel) Topical Interest Rooms are welcome. If you would like to submit a typical conference proceeding, there are no formal page limits. For guidance we recommend you limit yourself to 4-8 pages for contributed talks and 10-15 pages for invited talks. Those wishing to submit a written conference proceeding are encouraged to format the document using the CS20 LaTeX template (available on https://github.com/CoolStars20/proceedings/releases/latest). All such submissions should be made as PDFs and will be reviewed for content by the SOC and we may suggest edits.
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