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120 papers · 2 filters
The SAMI Galaxy Survey: Exploring the gas-phase Mass-Metallicity Relation
S. F. Sanchez, J. K. Barrera-Ballesteros, C. Lopez-Coba +13
We present a detailed exploration of the stellar mass vs. gas-phase metallicity relation (MZR) using integral field spectroscopy data obtained from ~1000 galaxies observed by the S…
The large and small scale properties of the intergalactic gas in the Slug Ly-alpha nebula revealed by MUSE HeII emission observations
Sebastiano Cantalupo, Gabriele Pezzulli, Simon J. Lilly +11
With a projected size of about 450 kpc at z~2.3, the Slug Ly-alpha nebula is a rare laboratory to study, in emission, the properties of the intergalactic gas in the Cosmic Web. Sin…
APOGEE [C/N] Abundances Across the Galaxy: Migration and Infall from Red Giant Ages
Sten Hasselquist, Jon A. Holtzman, Matthew Shetrone +14
We present [C/N]-[Fe/H] abundance trends from the SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey, Data Release 14 (DR14), for red giant branch stars…
White dwarfs in the building blocks of the Galactic spheroid
Pim van Oirschot, Gijs Nelemans, Else Starkenburg +3
The galactic halo likely grew over time in part by assembling smaller galaxies, the so-called building blocks. We investigate if the properties of these building blocks are reflect…
Semi-analytic modelling of the europium production by neutron star mergers in the halo of the Milky Way
Pim van Oirschot, Gijs Nelemans, Onno Pols +1
Neutron star mergers (NSM) are likely to be the main production sites for the rapid (r-) neutron capture process elements. We study the r-process enrichment of the stellar halo of…
Star Clusters in the Elliptical Galaxy NGC 4589 Hosting a Calcium-rich SN Ib (SN 2005CZ)
Myung Gyoon Lee, In Sung Jang, Jisu Kang
_NGC 4589, a bright E2 merger-remnant galaxy, hosts the peculiar fast and faint calcium-rich Type Ib supernova (SN) SN 2005cz. The progenitor of Ca-rich SNe Ib has been controversi…