{"data":{"id":"10.6084/m9.figshare.3829947.v1","type":"dois","attributes":{"doi":"10.6084/m9.figshare.3829947.v1","prefix":"10.6084","suffix":"m9.figshare.3829947.v1","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Mamajek, Eric","nameType":"Personal","givenName":"Eric","familyName":"Mamajek","affiliation":[],"nameIdentifiers":[{"schemeUri":"https://orcid.org","nameIdentifier":"https://orcid.org/0000-0003-2008-1488","nameIdentifierScheme":"ORCID"}]}],"titles":[{"title":"Mamajek 18: An Over-Density in Sco-Cen at D = 175 pc"}],"publisher":"figshare","container":{},"publicationYear":2016,"subjects":[{"subject":"Stars, Variable Stars"},{"subject":"Stellar Astronomy"},{"subject":"20110 Stellar Astronomy and Planetary Systems","subjectScheme":"FOR"},{"subject":"FOS: Physical sciences","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"FOS: Physical sciences","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"20104 Galactic Astronomy","subjectScheme":"FOR"},{"subject":"Astrophysics"}],"contributors":[],"dates":[{"date":"2016-09-14","dateType":"Created"},{"date":"2016-09-14","dateType":"Updated"},{"date":"2016","dateType":"Issued"}],"language":null,"types":{"ris":"DATA","bibtex":"misc","citeproc":"dataset","schemaOrg":"Dataset","resourceType":"Dataset","resourceTypeGeneral":"Dataset"},"relatedIdentifiers":[{"relationType":"IsPreviousVersionOf","relatedIdentifier":"10.6084/m9.figshare.3829947","relatedIdentifierType":"DOI"}],"relatedItems":[],"sizes":["69496 Bytes"],"formats":[],"version":null,"rightsList":[{"rights":"Creative Commons Attribution 4.0 International","rightsUri":"https://creativecommons.org/licenses/by/4.0/legalcode","schemeUri":"https://spdx.org/licenses/","rightsIdentifier":"cc-by-4.0","rightsIdentifierScheme":"SPDX"}],"descriptions":[{"description":"Between the famous Upper Sco OB subgroup of Sco-Cen, and the Lupus and CrA star-forming complexes, lies a region of young (~10 Myr-old) stars at d ~ 100-200 parsecs dubbed \"Lower Sco\". Within the Lower Sco subregion of Sco-Cen is a very strong over-density of pre-main sequence stars which may be a candidate open cluster (indexed as \"Mamajek 18\"). High resolution optical spectroscopy of dozens of X-ray-emitting stars in this group were taken with the MIKE spectrograph on the Magellan Clay 6.5-m telescope in July 2007, and low-resolution spectra taken with the SMARTS 1.5-m in 2010, revealing most of the stars to be Li-rich FGK pre-MS stars. The median radial velocity of the 18 Li-rich stars in this clump is +1.7+-1.0 km/s. \u003cbr\u003e\u003cbr\u003eCross-referencing the candidate pre-MS stars in this cluster with the Gaia DR1 data (http://www.cosmos.esa.int/web/gaia/dr1; Gaia collaboration and Brown et al. 2016, A\u0026amp;A, in press, http://www.aanda.org/articles/aa/pdf/forth/aa29512-16.pdf) shows that the cluster stars have mean proper motion pmRA, pmDec = -12.2, -21.7 (+-0.3, 0.4) mas/yr. The clipped Gaia DR1 mean parallax of these stars is 5.73+-0.02 mas (approximate distance 175+-1 pc). The resultant space motion for the group is U,V,W = -3.9, -19.9, -4.2 (+-0.7, 0.6, 0.5) km/s, with total heliocentric space motion 20.7+-0.6 km/s - similar to the other subgroups of Sco-Cen.\u003cbr\u003e \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHJlc291cmNlIHhtbG5zPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCIgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSIgeHNpOnNjaGVtYUxvY2F0aW9uPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCBodHRwOi8vc2NoZW1hLmRhdGFjaXRlLm9yZy9tZXRhL2tlcm5lbC00LjEvbWV0YWRhdGEueHNkIj4KICA8aWRlbnRpZmllciBpZGVudGlmaWVyVHlwZT0iRE9JIj4xMC42MDg0L005LkZJR1NIQVJFLjM4Mjk5NDcuVjE8L2lkZW50aWZpZXI+CiAgPGNyZWF0b3JzPgogICAgPGNyZWF0b3I+CiAgICAgIDxjcmVhdG9yTmFtZT5FcmljIE1hbWFqZWs8L2NyZWF0b3JOYW1lPgogICAgICA8bmFtZUlkZW50aWZpZXIgbmFtZUlkZW50aWZpZXJTY2hlbWU9Ik9SQ0lEIiBzY2hlbWVVUkk9Imh0dHA6Ly9vcmNpZC5vcmciPjAwMDAtMDAwMy0yMDA4LTE0ODg8L25hbWVJZGVudGlmaWVyPgogICAgPC9jcmVhdG9yPgogIDwvY3JlYXRvcnM+CiAgPHRpdGxlcz4KICAgIDx0aXRsZT5NYW1hamVrIDE4OiBBbiBPdmVyLURlbnNpdHkgaW4gU2NvLUNlbiBhdCBEID0gMTc1IHBjPC90aXRsZT4KICA8L3RpdGxlcz4KICA8ZGVzY3JpcHRpb25zPgogICAgPGRlc2NyaXB0aW9uIGRlc2NyaXB0aW9uVHlwZT0iQWJzdHJhY3QiPkJldHdlZW4gdGhlIGZhbW91cyBVcHBlciBTY28gT0Igc3ViZ3JvdXAgb2YgU2NvLUNlbiwgYW5kIHRoZSBMdXB1cyBhbmQgQ3JBIHN0YXItZm9ybWluZyBjb21wbGV4ZXMsIGxpZXMgYSByZWdpb24gb2YgeW91bmcgKH4xMCBNeXItb2xkKSBzdGFycyBhdCBkIH4gMTAwLTIwMCBwYXJzZWNzIGR1YmJlZCAiTG93ZXIgU2NvIi4gV2l0aGluIHRoZSBMb3dlciBTY28gc3VicmVnaW9uIG9mIFNjby1DZW4gaXMgYSB2ZXJ5IHN0cm9uZyBvdmVyLWRlbnNpdHkgb2YgcHJlLW1haW4gc2VxdWVuY2Ugc3RhcnMgd2hpY2ggbWF5IGJlIGEgY2FuZGlkYXRlIG9wZW4gY2x1c3RlciAoaW5kZXhlZCBhcyAiTWFtYWplayAxOCIpLiBIaWdoIHJlc29sdXRpb24gb3B0aWNhbCBzcGVjdHJvc2NvcHkgb2YgZG96ZW5zIG9mIFgtcmF5LWVtaXR0aW5nIHN0YXJzIGluIHRoaXMgZ3JvdXAgd2VyZSB0YWtlbiB3aXRoIHRoZSBNSUtFIHNwZWN0cm9ncmFwaCBvbiB0aGUgTWFnZWxsYW4gQ2xheSA2LjUtbSB0ZWxlc2NvcGUgaW4gSnVseSAyMDA3LCBhbmQgbG93LXJlc29sdXRpb24gc3BlY3RyYSB0YWtlbiB3aXRoIHRoZSBTTUFSVFMgMS41LW0gaW4gMjAxMCwgcmV2ZWFsaW5nIG1vc3Qgb2YgdGhlIHN0YXJzIHRvIGJlIExpLXJpY2ggRkdLIHByZS1NUyBzdGFycy4gVGhlIG1lZGlhbiByYWRpYWwgdmVsb2NpdHkgb2YgdGhlIDE4IExpLXJpY2ggc3RhcnMgaW4gdGhpcyBjbHVtcCBpcyArMS43Ky0xLjAga20vcy4gJmx0O2JyJmd0OyZsdDticiZndDtDcm9zcy1yZWZlcmVuY2luZyB0aGUgY2FuZGlkYXRlIHByZS1NUyBzdGFycyBpbiB0aGlzIGNsdXN0ZXIgd2l0aCB0aGUgR2FpYSBEUjEgZGF0YSAoaHR0cDovL3d3dy5jb3Ntb3MuZXNhLmludC93ZWIvZ2FpYS9kcjE7IEdhaWEgY29sbGFib3JhdGlvbiBhbmQgQnJvd24gZXQgYWwuIDIwMTYsIEEmYW1wO0EsIGluIHByZXNzLCBodHRwOi8vd3d3LmFhbmRhLm9yZy9hcnRpY2xlcy9hYS9wZGYvZm9ydGgvYWEyOTUxMi0xNi5wZGYpIHNob3dzIHRoYXQgdGhlIGNsdXN0ZXIgc3RhcnMgaGF2ZSBtZWFuIHByb3BlciBtb3Rpb24gcG1SQSwgcG1EZWMgPSAtMTIuMiwgLTIxLjcgKCstMC4zLCAwLjQpIG1hcy95ci4gVGhlIGNsaXBwZWQgR2FpYSBEUjEgbWVhbiBwYXJhbGxheCBvZiB0aGVzZSBzdGFycyBpcyA1LjczKy0wLjAyIG1hcyAoYXBwcm94aW1hdGUgZGlzdGFuY2UgMTc1Ky0xIHBjKS4gVGhlIHJlc3VsdGFudCBzcGFjZSBtb3Rpb24gZm9yIHRoZSBncm91cCBpcyBVLFYsVyA9IC0zLjksIC0xOS45LCAtNC4yICgrLTAuNywgMC42LCAwLjUpIGttL3MsIHdpdGggdG90YWwgaGVsaW9jZW50cmljIHNwYWNlIG1vdGlvbiAyMC43Ky0wLjYga20vcyAtIHNpbWlsYXIgdG8gdGhlIG90aGVyIHN1Ymdyb3VwcyBvZiBTY28tQ2VuLiZsdDticiZndDsgJmx0O2JyJmd0OyZsdDticiZndDsmbHQ7YnImZ3Q7PC9kZXNjcmlwdGlvbj4KICA8L2Rlc2NyaXB0aW9ucz4KICA8c3ViamVjdHM+CiAgICA8c3ViamVjdD5TdGFycywgVmFyaWFibGUgU3RhcnM8L3N1YmplY3Q+CiAgICA8c3ViamVjdD5TdGVsbGFyIEFzdHJvbm9teTwvc3ViamVjdD4KICAgIDxzdWJqZWN0IHNjaGVtZVVSST0iaHR0cDovL3d3dy5hYnMuZ292LmF1L2F1c3N0YXRzL2Fic0AubnNmLzAvNkJCNDI3QUI5Njk2QzIyNUNBMjU3NDE4MDAwNDQ2M0UiIHN1YmplY3RTY2hlbWU9IkZPUiI+MjAxMTAgU3RlbGxhciBBc3Ryb25vbXkgYW5kIFBsYW5ldGFyeSBTeXN0ZW1zPC9zdWJqZWN0PgogICAgPHN1YmplY3Qgc2NoZW1lVVJJPSJodHRwOi8vd3d3LmFicy5nb3YuYXUvYXVzc3RhdHMvYWJzQC5uc2YvMC82QkI0MjdBQjk2OTZDMjI1Q0EyNTc0MTgwMDA0NDYzRSIgc3ViamVjdFNjaGVtZT0iRk9SIj4yMDEwNCBHYWxhY3RpYyBBc3Ryb25vbXk8L3N1YmplY3Q+CiAgICA8c3ViamVjdD5Bc3Ryb3BoeXNpY3M8L3N1YmplY3Q+CiAgPC9zdWJqZWN0cz4KICA8cHVibGlzaGVyPmZpZ3NoYXJlPC9wdWJsaXNoZXI+CiAgPHB1YmxpY2F0aW9uWWVhcj4yMDE2PC9wdWJsaWNhdGlvblllYXI+CiAgPGRhdGVzPgogICAgPGRhdGUgZGF0ZVR5cGU9IkNyZWF0ZWQiPjIwMTYtMDktMTQ8L2RhdGU+CiAgICA8ZGF0ZSBkYXRlVHlwZT0iVXBkYXRlZCI+MjAxNi0wOS0xNDwvZGF0ZT4KICA8L2RhdGVzPgogIDxyZXNvdXJjZVR5cGUgcmVzb3VyY2VUeXBlR2VuZXJhbD0iRGF0YXNldCI+RGF0YXNldDwvcmVzb3VyY2VUeXBlPgogIDxzaXplcz4KICAgIDxzaXplPjY5NDk2IEJ5dGVzPC9zaXplPgogIDwvc2l6ZXM+CiAgPHJlbGF0ZWRJZGVudGlmaWVycz4KICAgIDxyZWxhdGVkSWRlbnRpZmllciByZWxhdGVkSWRlbnRpZmllclR5cGU9IkRPSSIgcmVsYXRpb25UeXBlPSJJc1ByZXZpb3VzVmVyc2lvbk9mIj4xMC42MDg0L205LmZpZ3NoYXJlLjM4Mjk5NDc8L3JlbGF0ZWRJZGVudGlmaWVyPgogIDwvcmVsYXRlZElkZW50aWZpZXJzPgogIDxyaWdodHNMaXN0PgogICAgPHJpZ2h0cyByaWdodHNVUkk9Imh0dHBzOi8vY3JlYXRpdmVjb21tb25zLm9yZy9saWNlbnNlcy9ieS80LjAvIj5DQyBCWSA0LjA8L3JpZ2h0cz4KICA8L3JpZ2h0c0xpc3Q+CjwvcmVzb3VyY2U+","url":"https://figshare.com/articles/dataset/Mamajek_18_An_Over-Density_in_Sco-Cen_at_D_175_pc/3829947/1","contentUrl":null,"metadataVersion":3,"schemaVersion":"http://datacite.org/schema/kernel-4","source":"mds","isActive":true,"state":"findable","reason":null,"viewCount":0,"viewsOverTime":[],"downloadCount":0,"downloadsOverTime":[],"referenceCount":0,"citationCount":0,"citationsOverTime":[],"partCount":0,"partOfCount":0,"versionCount":0,"versionOfCount":0,"created":"2016-09-14T23:28:21.000Z","reg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