Results 31 to 40 of about 7,252,313 (352)
A Gaia study of the Hyades open cluster [PDF]
, 2018 We present a study of the membership of the Hyades open cluster, derive kinematically-modelled parallaxes of its members, and study the colour-absolute magnitude diagram of the cluster.
Stella Reino +4 more
semanticscholar +1 more source
The Hyades open cluster is chemically inhomogeneous [PDF]
, 2016 We present a high-precision differential abundance analysis of 16 solar-type stars in the Hyades open cluster based on high resolution, high signal-to-noise ratio (S/N ~ 350 - 400) spectra obtained from the McDonald 2.7m telescope.
Fan Liu +4 more
semanticscholar +1 more source
The GAPS programme with HARPS-N at TNG XI. Pr~0211 in M~44: the first multi-planet system in an open cluster [PDF]
, 2016 Open cluster (OC) stars share the same age and metallicity, and, in general, their age and mass can be estimated with higher precision than for field stars.
L. Malavolta +59 more
semanticscholar +1 more source
The chemical compositions of solar twins in the open cluster M67 [PDF]
, 2016 Stars in open clusters are expected to share an identical abundance pattern. Establishing the level of chemical homogeneity in a given open cluster deserves further study as it is the basis of the concept of chemical tagging to unravel the history of ...
Fan Liu +9 more
semanticscholar +1 more source
Stellar Nucleosynthesis in the Hyades Open Cluster [PDF]
, 2009 We report a comprehensive light element (Li, C, N, O, Na, Mg, and Al) abundance analysis of three solar-type main sequence (MS) dwarfs and three red giant branch (RGB) clump stars in the Hyades open cluster using high-resolution and high signal-to-noise ...
Allende Prieto +48 more
core +3 more sources
WIYN Open Cluster Study. LXXV. Testing the Metallicity Dependence of Stellar Lithium Depletion Using Hyades-aged Clusters. I. Hyades and Praesepe [PDF]
, 2017 WIYN/Hydra spectroscopy (at R ∼ 15,000) of the moderately metal-rich Praesepe and Hyades open clusters was used to study their main-sequence (MS) iron ([Fe/H]) and lithium (A(Li)) abundances.
J. Cummings +3 more
semanticscholar +1 more source
EPIC 219388192b—An Inhabitant of the Brown Dwarf Desert in the Ruprecht 147 Open Cluster [PDF]
, 2016 We report the discovery of EPIC 219388192b, a transiting brown dwarf in a 5.3 day orbit around a member star of Ruprecht 147, the oldest nearby open cluster association, which was photometrically monitored by K2 during its Campaign 7.
G. Nowak +34 more
semanticscholar +1 more source
The intermediate-age open cluster NGC 2112 [PDF]
, 2002 We report on $BVI$ CCD photometry of a field centered on the region of the intermediate-age open cluster NGC 2112 down to V=21. Due to the smaller field coverage, we are able to limit the effect of field star contamination which hampered in the past ...
Brown +25 more
core +3 more sources
Open cluster kinematics with Gaia DR2
Astronomy & Astrophysics, 2018 Context. Open clusters are very good tracers of the evolution of the Galactic disc. Thanks to Gaia, their kinematics can be investigated with an unprecedented precision and accuracy. Aims.
C. Soubiran +18 more
semanticscholar +1 more source
STELLAR INVESTIGATION IN THE OPEN CLUSTER OF POLARIS
Odessa Astronomical Publications, 2008 We present the results of our analysis of high-resolution spectroscopic observations of Cepheid α UMi (Polaris A), and main-sequence type stars Polaris B, and HD 5914, an optical companion and a member of Polaris open cluster.
I. A. Usenko +3 more
doaj +1 more source