Publications (14)
Constraining Nucleosynthesis in Two CEMP Progenitors Using Fluorine
A. Mura-Guzmán, D. Yong, C. Abate +6
We present new fluorine abundance estimations in two carbon enhanced metal-poor (CEMP) stars, HE 1429-0551 and HE 1305+0007. HE 1429-0551 is also enriched in slow neutron-capture p…
Spitzer/IRAC and JHKs Observations of h & chi Persei: Constraints on Protoplanetary Disk and Massive Cluster Evolution at ~ 10^{7} yr
Thayne Currie, Zoltan Balog, S. J. Kenyon +12
We describe IRAC 3.6-8 mu_m observations and ground-based near-IR JHKs photometry from Mimir and 2MASS of the massive double cluster h & chi Persei complete to J=15.5 (M ~ 1.3 Msun…
Chemical Abundances in the Nuclear Star Cluster of the Milky Way: alpha-Element Trends and Their Similarities with the Inner Bulge
N. Ryde, G. Nandakumar, M. Schultheis +15
A chemical characterization of the Galactic Center is essential for understanding its formation and structural evolution. Trends of alpha-elements, such as Mg, Si, and Ca, serve as…
Chemical Evolution of Ytterbium in the Galactic Disk
M. Montelius, R. Forsberg, N. Ryde +8
Measuring the abundances of neutron-capture elements in Galactic disk stars is an important part of understanding key stellar and galactic processes. In the optical wavelength regi…
M Giants with IGRINS II. Chemical Evolution of Fluorine at High Metallicities
G. Nandakumar, N. Ryde, G. Mace
The origin and evolution of fluorine in the Milky Way galaxy is still in debate. In particular, the increase of the [F/Fe] in metal-rich stars found from near-IR HF-lines is challe…
M giants with IGRINS IV. Identification and characterization of a near-IR line of the s-element Barium
G. Nandakumar, N. Ryde, H. Hartman +1
Neutron-capture elements represent an important nucleosynthetic channel in the study of the Galactic Chemical Evolution of stellar populations. For stellar populations behind signi…