dc.contributor.author |
Bandyopadhyay, A |
|
dc.contributor.author |
Sivarani, T |
|
dc.contributor.author |
Beers, T. C |
|
dc.contributor.author |
Susmitha Rani, A |
|
dc.date.accessioned |
2021-01-31T07:51:50Z |
|
dc.date.available |
2021-01-31T07:51:50Z |
|
dc.date.issued |
2020-05 |
|
dc.identifier.citation |
Monthly Notices of the Royal Astronomical Society, Vol. 494, No.1, pp. 36-43 |
en_US |
dc.identifier.issn |
1365-2966 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/7554 |
|
dc.description |
Restricted Access |
en_US |
dc.description.abstract |
The stars SDSS J0646+4116 and SDSS J1937+5024 are relatively bright stars that were initially observed as a part of the SDSS/MARVELS pre-survey. They were selected, on the basis of their weak CH G bands, along with a total of 60 others, in the range of halo globular cluster (GC) metallicities for high-resolution spectroscopic follow-up as a part of the HESP-GOMPA survey (Hanle Echelle SPectrograph – Galactic survey Of Metal Poor stArs). The stars exhibit typical nucleosynthesis signatures expected from the so-called second-generation stars of GCs. The light-element anticorrelation of Mg–Al is detected, along with elevated abundances of Na. Carbon is found to be depleted, which is compatible with expectation. Lithium is also detected in SDSS J0646+4116 and SDSS J1937+5024; the measured abundances are similar to those of normal halo giant stars. These bright escapees provide a unique opportunity to study the nucleosynthesis events of GC in great detail, and shed light on their chemical-enrichment histories. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Oxford University Press on behalf of the Royal Astronomical Society |
en_US |
dc.relation.uri |
https://doi.org/10.1093/mnras/staa671 |
|
dc.rights |
© Royal Astronomical Society |
|
dc.subject |
Stars: abundances |
en_US |
dc.subject |
Stars: chemically peculiar |
en_US |
dc.subject |
Stars: population II |
en_US |
dc.subject |
Globular clusters: general |
en_US |
dc.subject |
Galaxy: halo |
en_US |
dc.title |
A high-resolution spectroscopic study of two new Na- and Al-rich field giants–likely globular cluster escapees in the galactic halo |
en_US |
dc.type |
Article |
en_US |