Spectroscopic study of the elusive globular cluster ESO452-SC11 and its surroundings
A Koch, CJ Hansen, A Kunder�- Astronomy & Astrophysics, 2017 - aanda.org
… mean heliocentric velocity is 19 � 2 km s -1 with a velocity dispersion of 2.8 � 3.4 km s -1 , a
… The mean Fe-abundance from spectral fitting is −0.88 � 0.03 dex, where the spread is driven …
… The mean Fe-abundance from spectral fitting is −0.88 � 0.03 dex, where the spread is driven …
Spectroscopic confirmation of the low-latitude object FSR 1716 as an old globular cluster
A Koch, A Kunder, J Wojno�- Astronomy & Astrophysics, 2017 - aanda.org
… signal-to-noise ratio (S/N) of our final extracted spectra is 30 px -1 on the … S/N, we were
able to determine chemical abundance ratios of several α- and heavy elements in GC stars (Koch …
able to determine chemical abundance ratios of several α- and heavy elements in GC stars (Koch …
Detailed chemical abundance analysis of the thick disk star cluster Gaia 1
A Koch, TT Hansen, A Kunder�- Astronomy & Astrophysics, 2018 - aanda.org
… more metal-poor than indicated by previous spectroscopy from the literature, but it is fully
in line with values from isochrone fitting. We find that Gaia 1 is moderately enhanced in the α-…
in line with values from isochrone fitting. We find that Gaia 1 is moderately enhanced in the α-…
Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy
A Koch, S Feltzing, D Ad�n, F Matteucci�- Astronomy & Astrophysics, 2013 - aanda.org
… That our results are robust with respect to the usage of plane parallel or spherical model
atmospheres is also corroborated by the investigation in Koch & McWilliam (2008). These …
atmospheres is also corroborated by the investigation in Koch & McWilliam (2008). These …
[HTML][HTML] Chemical evolution in hierarchical scenarios 01001
FE Assembly, H Assembly…�- EPJ Web of�…, 2012 - epj-conferences.org
EPJ Web of Conferences … EPJ Web of Conferences Volume 19 (2012) …