8 citations · 28 across the 9 of their papers we have counts for
10 papers
Globular cluster Observations for Luminosity-dispersion Distances (GOLD): Project description and velocity catalogue
K. Fahrion, M. A. Beasley, A. Gvozdenko +10
We introduce and describe the Globular cluster Observations for Luminosity-Dispersion distances (GOLD) project, which has the principal aim of determining independent distances bas…
Decomposing cool stellar populations with H-band spectral fluctuations: Long-period variable stars in NGC 5128 and carbon stars in NGC 5102
Russell J. Smith, Anastasia Gvozdenko
We analyse new H-band integral-field unit observations of two galaxies at ~4 Mpc, using a principal components analysis of pixel spectra to probe their giant star content. In both…
Extragalactic archaeology through high-resolution integrated-light spectroscopy of globular clusters
M. A. Beasley, K. Fahrion, A. Gvozdenko +1
We propose to radically expand the use of extragalactic globular clusters as tools for extragalactic archaeology. We propose a large-scale spectroscopic facility to obtain high spe…
Distance measurements from the internal dynamics of globular clusters: Application to the Sombrero galaxy (M104)
Katja Fahrion, Michael A. Beasley, Anastasia Gvozdenko +7
Globular clusters (GCs) are dense star clusters found in all massive galaxies. Recent work has established that they follow a tight relation between their internal stellar velocity…
Globular clusters in M104: Tracing kinematics and metallicities from the centre to the halo
Katja Fahrion, Michael A. Beasley, Eric Emsellem +4
As ancient star clusters, globular clusters (GCs) are regarded as powerful tracers of galaxy evolution and assembly. Due to their brightness and compact sizes, GCs are employed to…
Revisiting the globular clusters of NGC1052-DF2
K. Fahrion, M. A. Beasley, A. Gvozdenko +4
The ultra-diffuse galaxy (UDG) NGC1052-DF2 has captured the interest of astronomers ever since the low velocity dispersion measured from ten globular clusters (GCs) suggested a low…
A new way to measure the distance to NGC1052-DF2
Michael A. Beasley, Katja Fahrion, Sergio Guerra Arencibia +2
We employ a new way to measure the distance to NGC1052-DF2 via internal stellar velocity dispersions () of its globular clusters (GCs). We obtained deep (15.1h), R=18,200, Ca Tr…
Measuring distances to galaxies with globular cluster velocity dispersions
Michael A. Beasley, Katja Fahrion, Anastasia Gvozdenko
Accurate distances are key to obtaining intrinsic properties of astronomical objects such as luminosity or size. Globular clusters (GCs) follow a well-defined relation between thei…
Chemical composition of the young massive cluster NGC 1569-B
Anastasia Gvozdenko, Søren S. Larsen, Michael A. Beasley +1
We present a detailed chemical abundance analysis of the young massive cluster (YMC) NGC 1569-B. The host galaxy, NGC~1569, is a dwarf irregular starburst galaxy at a distance of 3…
Inferring the Helium abundance of extragalactic Globular Clusters using Integrated Spectra
Henry J. Leath, Michael A. Beasley, Alexandre Vazdekis +2
The leading method for the determination of relevant stellar population parameters of unresolved extragalactic Globular Clusters is through the study of their integrated spectrosco…