Line list : J/A+A/598/A54


Authors : Hansen C.J. orcid , Jofre P., Koch A. (hide) , Jofre P., Koch A. et..al

Bibcode : 2017A&A...598A..54H (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Atomic physics
UAT : Atomic physics

Model (MC)

Records :

Inserted into VizieR : 31-Jan-2017
Last modification : 31-Jan-2017

Something borrowed, something blue The nature of blue metal-poor stars inferred from their colours and chemical abundances. (2017)

Keywords : stars abundances - stars: blue stragglers - binaries: general - stars: fundamental parameters - stars: Population II - galaxies: halos

Abstract:Blue metal-poor stars (BMPs) are main sequence stars that appear bluer and more luminous than normal turnoff stars. They were originally singled out by using B-V and U-B colour cuts. Early studies found that a larger fraction of field BMPs stars were binaries compared to normal halo stars. Thus, BMP stars are ideal field blue straggler candidates for investigating internal stellar evolution processes and binary interaction. In particular, the presence or depletion in lithium in their spectra is a powerful indicator of their origin. They are either old, halo blue stragglers experiencing internal mixing processes or mass transfer (Li-depletion), or intermediate-age, single stars of possibly extragalactic origin ...(more)
Abstract: (hide)
Line list used in our analysis.
Camilla Juul Hansen, camillajuul(at)gmail.com

                
Catalogue provenance