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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00011384naa a2200913 4500
001oai:DiVA.org:uu-382390
003SwePub
008190426s2019 | |||||||||||000 ||eng|
009oai:lup.lub.lu.se:4ca7f6c1-cbb5-4b8e-b969-4cc2ab0f1bde
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3823902 URI
0247 a https://doi.org/10.1051/0004-6361/2018332182 DOI
0247 a https://lup.lub.lu.se/record/4ca7f6c1-cbb5-4b8e-b969-4cc2ab0f1bde2 URI
040 a (SwePub)uud (SwePub)lu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Buder, S.u MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany;Heidelberg Univ, Int Max Planck Res Sch Astron & Cosm Phys, Heidelberg, Germany,Max Planck Institute for Astronomy4 aut
2451 0a The GALAH survey :b An abundance, age, and kinematic inventory of the solar neighbourhood made with TGAS
264 c 2019-04-02
264 1b EDP SCIENCES S A,c 2019
338 a electronic2 rdacarrier
520 a The overlap between the spectroscopic Galactic Archaeology with HERMES (GALAH) survey and Gaia provides a high-dimensional chemodynamical space of unprecedented size. We present a first analysis of a subset of this overlap, of 7066 dwarf, turn-off, and subgiant stars. These stars have spectra from the GALAH survey and high parallax precision from the Gaia DR1 Tycho-Gaia Astrometric Solution. We investigate correlations between chemical compositions, ages, and kinematics for this sample. Stellar parameters and elemental abundances are derived from the GALAH spectra with the spectral synthesis code SPECTROSCOPY MADE EASY. We determine kinematics and dynamics, including action angles, from the Gaia astrometry and GALAH radial velocities. Stellar masses and ages are determined with Bayesian isochrone matching, using our derived stellar parameters and absolute magnitudes. We report measurements of Li, C, O, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Y, as well as Ba and we note that we have employed non-LTE calculations for Li, O, Al, and Fe. We show that the use of astrometric and photometric data improves the accuracy of the derived spectroscopic parameters, especially log g. Focusing our investigation on the correlations between stellar age, iron abundance [Fe/H], and mean alpha-enhancement [alpha/Fe] of the magnitude-selected sample, we recover the result that stars of the high-a sequence are typically older than stars in the low-a sequence, the latter spanning iron abundances of -0.7 < [Fe/H] < +0.5. While these two sequences become indistinguishable in [alpha/Fe] vs. [Fe/H] at the metal-rich regime, we find that age can be used to separate stars from the extended high-a and the low-a sequence even in this regime. When dissecting the sample by stellar age, we find that the old stars (>8 Gyr) have lower angular momenta L-z than the Sun, which implies that they are on eccentric orbits and originate from the inner disc. Contrary to some previous smaller scale studies we find a continuous evolution in the high-alpha-sequence up to super-solar [Fe/H] rather than a gap, which has been interpreted as a separate "high-alpha metal-rich" population. Stars in our sample that are younger than 10 Gyr, are mainly found on the low alpha-sequence and show a gradient in L-z from low [Fe/H] > (L-z > L-z,L-circle dot) towards higher [Fe/H] (L-z < L-z,L-circle dot), which implies that the stars at the ends of this sequence are likely not originating from the close solar vicinity.
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 surveys
653 a solar neighborhood
653 a Galaxy: evolution
653 a stars: fundamental parameters
653 a stars: abundances
653 a stars: kinematics and dynamics
653 a Galaxy: evolution
653 a Solar neighborhood
653 a Stars: abundances
653 a Stars: fundamental parameters
653 a Stars: kinematics and dynamics
653 a Surveys
7001 a Lind, Karinu Lund University,Lunds universitet,Uppsala universitet,Observationell astrofysik,MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science,Max Planck Institute for Astronomy4 aut0 (Swepub:lu)ki1721li
7001 a Ness, M. K.u Columbia Univ, Dept Astron, Pupin Phys Labs, New York, NY 10027 USA;Flatiron Inst, Ctr Computat Astrophys, 162 Fifth Ave, New York, NY 10010 USA,Columbia University,Flatiron Institute4 aut
7001 a Asplund, M.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia;Ctr Excellence Astrophys Three Dimens ASTRO 3D, Sydney, NSW, Australia,Australian National University,Mount Stromlo Observatory,Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D)4 aut0 (Swepub:lu)med-ma17
7001 a Duong, L.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia,Mount Stromlo Observatory4 aut
7001 a Lin, J.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia,Mount Stromlo Observatory4 aut
7001 a Kos, J.u Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia;Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia,University of Sydney,University of Ljubljana,Mount Stromlo Observatory4 aut
7001 a Casagrande, L.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia,Mount Stromlo Observatory4 aut
7001 a Casey, A. R.u Monash Univ, Sch Phys & Astron, Melbourne, Vic, Australia;Monash Univ, Fac Informat Technol, Melbourne, Vic, Australia,Monash University4 aut
7001 a Bland-Hawthorn, J.u Ctr Excellence Astrophys Three Dimens ASTRO 3D, Sydney, NSW, Australia;Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia;Univ Calif Berkeley, Miller Inst, Berkeley, CA 94720 USA,Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D),University of Sydney4 aut
7001 a De Silva, G. M.u Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia;Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia,Macquarie University, Sydney,University of Sydney4 aut
7001 a D'Orazi, Vu Osserv Astron Padova, Ist Nazl Astrofis, Vicolo Osservatorio 5, I-35122 Padua, Italy,INAF - Osservatorio Astronomico di Padova4 aut
7001 a Freeman, K. C.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia,Mount Stromlo Observatory,University of Ljubljana4 aut
7001 a Martell, S. L.u Ctr Excellence Astrophys Three Dimens ASTRO 3D, Sydney, NSW, Australia;Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia,Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D),University of New South Wales,University of Sydney4 aut0 (Swepub:lu)med-ss18
7001 a Schlesinger, K. J.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia4 aut
7001 a Sharma, S.u Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia,Princeton University,Institute for Advanced Study, Princeton,Carnegie Observatories4 aut
7001 a Simpson, J. D.u Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia,University of New South Wales4 aut
7001 a Zucker, D. B.u Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia,Macquarie University, Sydney4 aut
7001 a Zwitter, T.u Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia,University of Ljubljana4 aut
7001 a Cotar, K.u Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia4 aut
7001 a Dotter, A.u Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA,Harvard–Smithsonian Center for Astrophysics4 aut
7001 a Hayden, M. R.u Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia,University of Sydney4 aut
7001 a Hyde, E. A.u Western Sydney Univ, Locked Bag 1797, Penrith, NSW 2751, Australia,Western Sydney University4 aut
7001 a Kafle, P. R.u Univ Western Australia, ICRAR, 35 Stirling Highway, Crawley, WA 6009, Australia,University of Western Australia, Crawley4 aut
7001 a Lewis, G. F.u Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia,University of Sydney4 aut
7001 a Nataf, D. M.u Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA,Johns Hopkins University4 aut
7001 a Nordlander, T.u Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Weston, ACT 2611, Australia;Ctr Excellence Astrophys Three Dimens ASTRO 3D, Sydney, NSW, Australia,Center of Excellence for Astrophysics in Three Dimensions (ASTRO-3D),Mount Stromlo Observatory4 aut
7001 a Reid, W.u Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia;Western Sydney Univ, Locked Bag 1797, Penrith, NSW 2751, Australia,Western Sydney University,Macquarie University, Sydney,Johns Hopkins University4 aut
7001 a Rix, H-Wu MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany,Max Planck Institute for Astronomy4 aut
7001 a Skuladottir, A.u MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany,Max Planck Institute for Astronomy4 aut
7001 a Stello, D.u Univ Sydney, Sch Phys, A28, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia;Univ New South Wales, Sch Phys, Sydney, NSW 2052, Australia;Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark,Aarhus University,University of New South Wales,University of Sydney4 aut
7001 a Ting, Y-Su Inst Adv Study, Olden Lane, Princeton, NJ 08540 USA;Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA;Observ Carnegie Inst Washington, 813 Santa Barbara St, Pasadena, CA 91101 USA4 aut
7001 a Traven, G.u Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia,University of Ljubljana4 aut0 (Swepub:lu)gr0220tr
7001 a Wyse, R. F. G.u Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA4 aut
7102 a MPIA, Koenigstuhl 17, D-69117 Heidelberg, Germany;Heidelberg Univ, Int Max Planck Res Sch Astron & Cosm Phys, Heidelberg, Germanyb Max Planck Institute for Astronomy4 org
7730 t Astronomy and Astrophysicsd : EDP SCIENCES S Ag 624q 624x 0004-6361x 1432-0746
8564 u https://doi.org/10.1051/0004-6361/201833218y Fulltext
8564 u https://uu.diva-portal.org/smash/get/diva2:1307168/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
8564 u https://www.aanda.org/articles/aa/pdf/2019/04/aa33218-18.pdf
8564 u http://dx.doi.org/10.1051/0004-6361/201833218y FULLTEXT
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-382390
8564 8u https://doi.org/10.1051/0004-6361/201833218
8564 8u https://lup.lub.lu.se/record/4ca7f6c1-cbb5-4b8e-b969-4cc2ab0f1bde

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