Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Kovaleva, Dana A. [VerfasserIn]   i
 Piskunov, Anatoly E. [VerfasserIn]   i
 Kharchenko, Nina V. [VerfasserIn]   i
 Röser, Siegfried [VerfasserIn]   i
 Schilbach, Elena [VerfasserIn]   i
 Reffert, Sabine [VerfasserIn]   i
 Yen, Steffi Xiang-Ting [VerfasserIn]   i
Titel:Open star clusters in the Milky Way
Titelzusatz:comparison of photometric and trigonometric distance scales based on Gaia TGAS data
Verf.angabe:Dana A. Kovaleva, Anatoly E. Piskunov, Nina V. Kharchenko, Siegfried Röser, Elena Schilbach, Ralf-Dieter Scholz, Sabine Reffert, and Steffi X. Yen
Jahr:2017
Umfang:4 S.
Fussnoten:Gesehen am 26.03.2018
Titel Quelle:Enthalten in: De.arxiv.org
Ort Quelle:[S.l.] : Arxiv.org, 1991
Jahr Quelle:2017
Band/Heft Quelle:(2017) Artikel-Nummer 1709.09975, 4 Seiten
Abstract:The global survey of star clusters in the Milky Way (MWSC) is a comprehensive list of 3061 objects that provides, among other parameters, distances to clusters based on isochrone fitting. The Tycho-Gaia Astrometric Solution (TGAS) catalogue, which is a part of Gaia data release 1 (Gaia DR1), delivers accurate trigonometric parallax measurements for more than 2 million stars, including those in star clusters. We compare the open cluster photometric distance scale with the measurements given by the trigonometric parallaxes from TGAS to evaluate the consistency between these values. The average parallaxes of probable cluster members available in TGAS provide the trigonometric distance scale of open clusters, while the photometric scale is given by the distances published in the MWSC. Sixty-four clusters are suited for comparison as they have more than 16 probable members with parallax measurements in TGAS. We computed the average parallaxes of the probable members and compared these to the photometric parallaxes derived within the MWSC. We find a good agreement between the trigonometric TGAS-based and the photometric MWSC-based distance scales of open clusters, which for distances less than 2.3 kpc coincide at a level of about 0.1 mas with no dependence on the distance. If at all, there is a slight systematic offset along the Galactic equator between $30^\circ$ and $160^\circ$ galactic longitude.
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Kostenfrei: Volltext: http://arxiv.org/abs/1709.09975
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Astrophysics - Astrophysics of Galaxies
 Astrophysics - Solar and Stellar Astrophysics
K10plus-PPN:1571417427
Verknüpfungen:→ Sammelwerk

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68236266   QR-Code
zum Seitenanfang