dc.contributor.author |
Ramya, P |
|
dc.contributor.author |
Reddy, B. E |
|
dc.contributor.author |
Lambert, D. L |
|
dc.contributor.author |
Musthafa, M. M |
|
dc.date.accessioned |
2020-11-19T13:39:35Z |
|
dc.date.available |
2020-11-19T13:39:35Z |
|
dc.date.issued |
2016-08 |
|
dc.identifier.citation |
Monthly Notices of the Royal Astronomical Society, Vol. 460, No. 2, pp. 1356-1370 |
en_US |
dc.identifier.issn |
1365-2966 |
|
dc.identifier.uri |
http://prints.iiap.res.in/handle/2248/7245 |
|
dc.description |
Restricted Access © Royal Astronomical Society http://dx.doi.org/10.1093/mnras/stw852 |
en_US |
dc.description.abstract |
An abundance analysis is reported of 58-K giants identified by Famaey et al. (
2005
, A&A,
430, 165) as highly probable members of the Hercules stream selected from stars north of
the celestial equator in the
Hipparcos
catalogue. The giants have compositions spanning the
interval [Fe/H] from
−
0.17 to
+
0.42 with a mean value of
+
0.15 and relative elemental
abundances [El/Fe] representative of the Galactic thin disc. Selection effects may have biased
the selection from the
Hipparcos
catalogue against the selection of metal-poor stars. Our
reconsideration of the recent extensive survey by Bensby et al. of FG dwarfs, including metal-
poor stars, provides a [Fe/H] distribution for the Hercules stream, which is similar to that from
the 58 giants. It appears that the stream is dominated by metal-rich stars from the thin disc. We
discuss suggestions in the literature that the stream includes metal-poor stars from the thick
disc. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Oxford University Press on behalf of the Royal Astronomical Society |
en_US |
dc.subject |
Stars: abundances |
en_US |
dc.subject |
Stars: moving groups |
en_US |
dc.subject |
Galaxy: kinematics and dynamics |
en_US |
dc.subject |
Galaxy: disc |
en_US |
dc.title |
Chemical compositions and kinematics of the Hercules stream |
en_US |
dc.type |
Article |
en_US |