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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00006330naa a2200637 4500
001oai:DiVA.org:uu-368649
003SwePub
008181206s2018 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3686492 URI
0247 a https://doi.org/10.1093/mnras/sty21712 DOI
040 a (SwePub)uu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Kos, Janezu Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.4 aut
2451 0a The GALAH survey and Gaia DR2 :b (non-)existence of five sparse high-latitude open clusters
264 c 2018-08-13
264 1b Oxford University Press (OUP),c 2018
338 a print2 rdacarrier
520 a Sparse open clusters can be found at high galactic latitudes where loosely populated clusters are more easily detected against the lower stellar background. Because most star formation takes place in the thin disc, the observed population of clusters far from the Galactic plane is hard to explain. We combined spectral parameters from the GALAH survey with the Gaia DR2 catalogue to study the dynamics and chemistry of five old sparse high-latitude clusters in more detail. We find that four of them (NGC 1252, NGC 6994, NGC 7772, NGC 7826) - originally classified in 1888 - are not clusters but are instead chance projections on the sky. Member stars quoted in the literature for these four clusters are unrelated in our multidimensional physical parameter space; the quoted cluster properties in the literature are therefore meaningless. We confirm the existence of visually similar NGC 1901 for which we provide a probabilistic membership analysis. An overdensity in three spatial dimensions proves to be enough to reliably detect sparse clusters, but the whole six-dimensional space must be used to identify members with high confidence, as demonstrated in the case of NGC 1901.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a techniques: radial velocities
653 a catalogues
653 a surveys
653 a parallaxes
653 a proper motions
7001 a de Silva, Gayandhiu Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.;Macquarie Univ, AAO MQ, Sydney, NSW 2109, Australia.4 aut
7001 a Buder, Svenu MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany.;Heidelberg Univ, Int Max Planck Res Sch Astron & Cosm Phys, Heidelberg, Germany.4 aut
7001 a Bland-Hawthorn, Jossu Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.;ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT, Australia.;Univ Sydney, Sydney Astrophoton Instrumentat Labs, Sch Phys, A28, Camperdown, NSW 2006, Australia.4 aut
7001 a Sharma, Sanjibu Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.4 aut
7001 a Asplund, Martinu ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT, Australia.;Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.4 aut
7001 a D'Orazi, Valentinau Osserv Astron Padova, Inst Nazl Astrofis, Vicolo Osservatorio 5, I-35122 Padua, Italy.4 aut
7001 a Duong, Lyu Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.4 aut
7001 a Freeman, Kenu Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.4 aut
7001 a Lewis, Geraint F.u Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.4 aut
7001 a Lin, Janeu ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT, Australia.;Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.4 aut
7001 a Lind, Karinu Uppsala universitet,Teoretisk astrofysik,MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany.4 aut0 (Swepub:uu)karli488
7001 a Martell, Sarah L.u MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany.;UNSW, Sch Phys, Sydney, NSW 2052, Australia.4 aut
7001 a Schlesinger, Katharine J.u Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.4 aut
7001 a Simpson, Jeffrey D.u UNSW, Sch Phys, Sydney, NSW 2052, Australia.4 aut
7001 a Zucker, Daniel B.u Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia.4 aut
7001 a Zwitter, Tomazu Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia.4 aut
7001 a Bedding, Timothy R.u Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.;Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, DK-8000 Aarhus C, Denmark.4 aut
7001 a Cotar, Klemenu Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia.4 aut
7001 a Horner, Jonathanu Univ Southern Queensland, Div Res & Innovat, Toowoomba, Qld 4350, Australia.4 aut
7001 a Nordlander, Thomasu ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT, Australia.;Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia.4 aut
7001 a Stello, Denisu UNSW, Sch Phys, Sydney, NSW 2052, Australia.;Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, DK-8000 Aarhus C, Denmark.4 aut
7001 a Ting, Yuan-Senu Inst Adv Study, Princeton, NJ 08540 USA.;Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA.;Observ Carnegie Inst Washington, 813 Santa Barbara St, Pasadena, CA 91101 USA.4 aut
7001 a Traven, Gregoru Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia.4 aut
7102 a Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.b Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia.;Macquarie Univ, AAO MQ, Sydney, NSW 2109, Australia.4 org
7730 t Monthly notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 480:4, s. 5242-5259q 480:4<5242-5259x 0035-8711x 1365-2966
8564 u https://arxiv.org/pdf/1807.00822.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-368649
8564 8u https://doi.org/10.1093/mnras/sty2171

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