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Identifying Moving Groups Using Elemental Abundances - A Study of KFR08

Thorén, Petter LU (2011) In Lund Observatory Examensarbeten ASTK01 20111
Lund Observatory
Abstract
In this work we study nine Hipparcos stars that has been identified
as members of the KFR08 stellar stream by Bobylev et al. (2010).
We perform high-resolution elemental abundance analysis on these
stars using spectra from several sources (ELODIE, HIRES, MIKE
and UVES) and the abundance analysis method from Bensby et al.
(2003). Furthermore, we perform an angular momentum analysis of
the stars using methodology from Kepley et al. (2007) and make an
age estimation using Hipparcos photometry and Bertelli et al. (2009)
isochrones.

We find that five out of nine stars are members of a possible
KFR08 moving group with metallicity [Fe/H]≃ −0.90 dex and an age
of roughly 12 Gyrs. However, a small sample size makes the identifi-
... (More)
In this work we study nine Hipparcos stars that has been identified
as members of the KFR08 stellar stream by Bobylev et al. (2010).
We perform high-resolution elemental abundance analysis on these
stars using spectra from several sources (ELODIE, HIRES, MIKE
and UVES) and the abundance analysis method from Bensby et al.
(2003). Furthermore, we perform an angular momentum analysis of
the stars using methodology from Kepley et al. (2007) and make an
age estimation using Hipparcos photometry and Bertelli et al. (2009)
isochrones.

We find that five out of nine stars are members of a possible
KFR08 moving group with metallicity [Fe/H]≃ −0.90 dex and an age
of roughly 12 Gyrs. However, a small sample size makes the identifi-
cation of a KFR08 moving group uncertain. (Less)
Please use this url to cite or link to this publication:
author
Thorén, Petter LU
supervisor
organization
course
ASTK01 20111
year
type
M2 - Bachelor Degree
subject
publication/series
Lund Observatory Examensarbeten
report number
2011-EXA56
language
English
id
2158519
date added to LUP
2011-09-16 16:18:01
date last changed
2011-09-16 16:18:01
@misc{2158519,
  abstract     = {In this work we study nine Hipparcos stars that has been identified
as members of the KFR08 stellar stream by Bobylev et al. (2010).
We perform high-resolution elemental abundance analysis on these
stars using spectra from several sources (ELODIE, HIRES, MIKE
and UVES) and the abundance analysis method from Bensby et al.
(2003). Furthermore, we perform an angular momentum analysis of
the stars using methodology from Kepley et al. (2007) and make an
age estimation using Hipparcos photometry and Bertelli et al. (2009)
isochrones.

We find that five out of nine stars are members of a possible
KFR08 moving group with metallicity [Fe/H]≃ −0.90 dex and an age
of roughly 12 Gyrs. However, a small sample size makes the identifi-
cation of a KFR08 moving group uncertain.},
  author       = {Thorén, Petter},
  language     = {eng},
  note         = {Student Paper},
  series       = {Lund Observatory Examensarbeten},
  title        = {Identifying Moving Groups Using Elemental Abundances - A Study of KFR08},
  year         = {2011},
}