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18 papers · 2 filters
First Co-spatial Comparison of Stellar, Neutral-, and Ionized-gas Metallicities in a metal-rich galaxy: M83
Svea Hernandez, Alessandra Aloisi, Bethan L. James +14
We carry out a comparative analysis of the metallicities from the stellar, neutral-gas, and ionized-gas components in the metal-rich spiral galaxy M83. We analyze spectroscopic obs…
StarcNet: Machine Learning for Star Cluster Identification
Gustavo Perez, Matteo Messa, Daniela Calzetti +4
We present a machine learning (ML) pipeline to identify star clusters in the multi{color images of nearby galaxies, from observations obtained with the Hubble Space Telescope as pa…
Weighing the Galactic disk in sub-regions of the solar neighbourhood using Gaia DR2
Axel Widmark, Pablo Fernández de Salas, Giacomo Monari
We infer the gravitational potential of the Galactic disk by analysing the phase-space densities of 120 stellar samples in 40 spatially separate sub-regions of the solar neighbourh…
Looking for obscured young star clusters in NCG 1313
M. Messa, D. Calzetti, A. Adamo +7
Using recently acquired HST NIR observations (J, Pa and H bands) of the nearby galaxy NGC1313, we investigate the timescales required by a young star cluster to emerge from its…
ALMA detection of the dusty object silhouetted against the S0 galaxy NGC 3269 in the Antlia cluster
L. K. Haikala, R. Salinas, T. Richtler +3
An intriguing silhouette of a small dust patch can be seen against the disk of the S0 galaxy NGC 3269 in the Antlia cluster in optical images. The images do not provide any clue as…
Exploring the Galaxy's halo and very metal-weak thick disk with SkyMapper and Gaia DR2
G. Cordoni, G. S. Da Costa, D. Yong +16
In this work we combine spectroscopic information from the \textit{SkyMapper survey for Extremely Metal-Poor stars} and astrometry from Gaia DR2 to investigate the kinematics of a…