{"data":{"id":"10.6084/m9.figshare.3829947","type":"dois","attributes":{"doi":"10.6084/m9.figshare.3829947","prefix":"10.6084","suffix":"m9.figshare.3829947","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":[],"relatedItems":[],"sizes":["139217 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+-0.3 mas (approximate distance 175+-9 pc; dominated by systematic parallax error 0.3 mas). The resultant space motion for the group is U,V,W = -3.9, -19.9, -4.2 (+-1.0, 0.9, 0.6) 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":"PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz4KPHJlc291cmNlIHhtbG5zPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCIgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSIgeHNpOnNjaGVtYUxvY2F0aW9uPSJodHRwOi8vZGF0YWNpdGUub3JnL3NjaGVtYS9rZXJuZWwtNCBodHRwOi8vc2NoZW1hLmRhdGFjaXRlLm9yZy9tZXRhL2tlcm5lbC00LjEvbWV0YWRhdGEueHNkIj4KICA8aWRlbnRpZmllciBpZGVudGlmaWVyVHlwZT0iRE9JIj4xMC42MDg0L005LkZJR1NIQVJFLjM4Mjk5NDc8L2lkZW50aWZpZXI+CiAgPGNyZWF0b3JzPgogICAgPGNyZWF0b3I+CiAgICAgIDxjcmVhdG9yTmFtZT5FcmljIE1hbWFqZWs8L2NyZWF0b3JOYW1lPgogICAgICA8bmFtZUlkZW50aWZpZXIgbmFtZUlkZW50aWZpZXJTY2hlbWU9Ik9SQ0lEIiBzY2hlbWVVUkk9Imh0dHA6Ly9vcmNpZC5vcmciPjAwMDAtMDAwMy0yMDA4LTE0ODg8L25hbWVJZGVudGlmaWVyPgogICAgPC9jcmVhdG9yPgogIDwvY3JlYXRvcnM+CiAgPHRpdGxlcz4KICAgIDx0aXRsZT5NYW1hamVrIDE4OiBBbiBPdmVyLURlbnNpdHkgaW4gU2NvLUNlbiBhdCBEID0gMTc1IHBjPC90aXRsZT4KICA8L3RpdGxlcz4KICA8ZGVzY3JpcHRpb25zPgogICAgPGRlc2NyaXB0aW9uIGRlc2NyaXB0aW9uVHlwZT0iQWJzdHJhY3QiPkJldHdlZW4gdGhlIGZhbW91cyBVcHBlciBTY28gT0Igc3ViZ3JvdXAgb2YgU2NvLUNlbiwgYW5kIHRoZSBMdXB1cyBhbmQgQ3JBIHN0YXItZm9ybWluZyBjb21wbGV4ZXMsIGxpZXMgYSByZWdpb24gb2YgeW91bmcgKH4xMCBNeXItb2xkKSBzdGFycyBhdCBkIH4gMTAwLTIwMCBwYXJzZWNzIGR1YmJlZCAiTG93ZXIgU2NvIi4gV2l0aGluIHRoZSBMb3dlciBTY28gc3VicmVnaW9uIG9mIFNjby1DZW4gaXMgYSB2ZXJ5IHN0cm9uZyBvdmVyLWRlbnNpdHkgb2YgcHJlLW1haW4gc2VxdWVuY2Ugc3RhcnMgd2hpY2ggbWF5IGJlIGEgY2FuZGlkYXRlIG9wZW4gY2x1c3RlciAoaW5kZXhlZCBhcyAiTWFtYWplayAxOCIpLiBIaWdoIHJlc29sdXRpb24gb3B0aWNhbCBzcGVjdHJvc2NvcHkgb2YgZG96ZW5zIG9mIFgtcmF5LWVtaXR0aW5nIHN0YXJzIGluIHRoaXMgZ3JvdXAgd2VyZSB0YWtlbiB3aXRoIHRoZSBNSUtFIHNwZWN0cm9ncmFwaCBvbiB0aGUgTWFnZWxsYW4gQ2xheSA2LjUtbSB0ZWxlc2NvcGUgaW4gSnVseSAyMDA3LCBhbmQgbG93LXJlc29sdXRpb24gc3BlY3RyYSB0YWtlbiB3aXRoIHRoZSBTTUFSVFMgMS41LW0gaW4gMjAxMCwgcmV2ZWFsaW5nIG1vc3Qgb2YgdGhlIHN0YXJzIHRvIGJlIExpLXJpY2ggRkdLIHByZS1NUyBzdGFycy4gVGhlIG1lZGlhbiByYWRpYWwgdmVsb2NpdHkgb2YgdGhlIDE4IExpLXJpY2ggc3RhcnMgaW4gdGhpcyBjbHVtcCBpcyArMS43Ky0xLjAga20vcy4gJmx0O2JyJmd0OyZsdDticiZndDtDcm9zcy1yZWZlcmVuY2luZyB0aGUgY2FuZGlkYXRlIHByZS1NUyBzdGFycyBpbiB0aGlzIGNsdXN0ZXIgd2l0aCB0aGUgR2FpYSBEUjEgZGF0YSAoaHR0cDovL3d3dy5jb3Ntb3MuZXNhLmludC93ZWIvZ2FpYS9kcjE7IEdhaWEgY29sbGFib3JhdGlvbiBhbmQgQnJvd24gZXQgYWwuIDIwMTYsIEEmYW1wO0EsIGluIHByZXNzLCBodHRwOi8vd3d3LmFhbmRhLm9yZy9hcnRpY2xlcy9hYS9wZGYvZm9ydGgvYWEyOTUxMi0xNi5wZGYpIHNob3dzIHRoYXQgdGhlIGNsdXN0ZXIgc3RhcnMgaGF2ZSBtZWFuIHByb3BlciBtb3Rpb24gcG1SQSwgcG1EZWMgPSAtMTIuMiwgLTIxLjcgKCstMC4zLCAwLjQpIG1hcy95ci4gVGhlIGNsaXBwZWQgR2FpYSBEUjEgbWVhbiBwYXJhbGxheCBvZiB0aGVzZSBzdGFycyBpcyA1LjczKy0wLjMgbWFzIChhcHByb3hpbWF0ZSBkaXN0YW5jZSAxNzUrLTkgcGM7IGRvbWluYXRlZCBieSBzeXN0ZW1hdGljIHBhcmFsbGF4IGVycm9yIDAuMyBtYXMpLiBUaGUgcmVzdWx0YW50IHNwYWNlIG1vdGlvbiBmb3IgdGhlIGdyb3VwIGlzIFUsVixXID0gLTMuOSwgLTE5LjksIC00LjIgKCstMS4wLCAwLjksIDAuNikga20vcywgd2l0aCB0b3RhbCBoZWxpb2NlbnRyaWMgc3BhY2UgbW90aW9uIDIwLjcrLTAuNiBrbS9zIC0gc2ltaWxhciB0byB0aGUgb3RoZXIgc3ViZ3JvdXBzIG9mIFNjby1DZW4uJmx0O2JyJmd0OyAmbHQ7YnImZ3Q7Jmx0O2JyJmd0OyZsdDticiZndDs8L2Rlc2NyaXB0aW9uPgogIDwvZGVzY3JpcHRpb25zPgogIDxzdWJqZWN0cz4KICAgIDxzdWJqZWN0PlN0YXJzLCBWYXJpYWJsZSBTdGFyczwvc3ViamVjdD4KICAgIDxzdWJqZWN0PlN0ZWxsYXIgQXN0cm9ub215PC9zdWJqZWN0PgogICAgPHN1YmplY3Qgc2NoZW1lVVJJPSJodHRwOi8vd3d3LmFicy5nb3YuYXUvYXVzc3RhdHMvYWJzQC5uc2YvMC82QkI0MjdBQjk2OTZDMjI1Q0EyNTc0MTgwMDA0NDYzRSIgc3ViamVjdFNjaGVtZT0iRk9SIj4yMDExMCBTdGVsbGFyIEFzdHJvbm9teSBhbmQgUGxhbmV0YXJ5IFN5c3RlbXM8L3N1YmplY3Q+CiAgICA8c3ViamVjdCBzY2hlbWVVUkk9Imh0dHA6Ly93d3cuYWJzLmdvdi5hdS9hdXNzdGF0cy9hYnNALm5zZi8wLzZCQjQyN0FCOTY5NkMyMjVDQTI1NzQxODAwMDQ0NjNFIiBzdWJqZWN0U2NoZW1lPSJGT1IiPjIwMTA0IEdhbGFjdGljIEFzdHJvbm9teTwvc3ViamVjdD4KICAgIDxzdWJqZWN0PkFzdHJvcGh5c2ljczwvc3ViamVjdD4KICA8L3N1YmplY3RzPgogIDxwdWJsaXNoZXI+Zmlnc2hhcmU8L3B1Ymxpc2hlcj4KICA8cHVibGljYXRpb25ZZWFyPjIwMTY8L3B1YmxpY2F0aW9uWWVhcj4KICA8ZGF0ZXM+CiAgICA8ZGF0ZSBkYXRlVHlwZT0iQ3JlYXRlZCI+MjAxNi0wOS0xNDwvZGF0ZT4KICAgIDxkYXRlIGRhdGVUeXBlPSJVcGRhdGVkIj4yMDE2LTA5LTE0PC9kYXRlPgogIDwvZGF0ZXM+CiAgPHJlc291cmNlVHlwZSByZXNvdXJjZVR5cGVHZW5lcmFsPSJEYXRhc2V0Ij5EYXRhc2V0PC9yZXNvdXJjZVR5cGU+CiAgPHNpemVzPgogICAgPHNpemU+MTM5MjE3IEJ5dGVzPC9zaXplPgogIDwvc2l6ZXM+CiAgPHJpZ2h0c0xpc3Q+CiAgICA8cmlnaHRzIHJpZ2h0c1VSST0iaHR0cHM6Ly9jcmVhdGl2ZWNvbW1vbnMub3JnL2xpY2Vuc2VzL2J5LzQuMC8iPkNDIEJZIDQuMDwvcmlnaHRzPgogIDwvcmlnaHRzTGlzdD4KPC9yZXNvdXJjZT4=","url":"https://figshare.com/articles/dataset/Mamajek_18_An_Over-Density_in_Sco-Cen_at_D_175_pc/3829947","contentUrl":null,"metadataVersion":2,"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","registered":"2016-09-14T23:28:22.000Z","published":"2016","updated":"2020-09-03T15:14:29.000Z"},"relationships":{"client":{"data":{"id":"figshare.ars","type":"clients"}},"provider":{"da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