Zobrazeno 1 - 10
of 4 272
pro vyhledávání: '"Warrick J"'
Autor:
Pfeffer, Joel, Forbes, Duncan A., Romanowsky, Aaron J., Bastian, Nate, Crain, Robert A., Kruijssen, J. M. Diederik, Bekki, Kenji, Brodie, Jean P., Chevance, Mélanie, Couch, Warrick J., Gannon, Jonah S.
High-resolution imaging and strong gravitational lensing of high-redshift galaxies have enabled the detection of compact sources with properties similar to nearby massive star clusters. Often found to be very young, these sources may be globular clus
Externí odkaz:
http://arxiv.org/abs/2410.07498
Autor:
Janssens, Steven R., Forbes, Duncan A., Romanowsky, Aaron J., Gannon, Jonah, Pfeffer, Joel, Couch, Warrick J., Brodie, Jean P., Harris, William E., Durrell, Patrick R., Bekki, Kenji
We present Hubble Space Telescope ACS/WFC and WFC3/UVIS imaging for a sample of 50 low surface brightness (LSB) galaxies in the $\sim$10$^{15}$ M$_{\odot}$ Perseus cluster, which were originally identified in ground-based imaging. We measure the stru
Externí odkaz:
http://arxiv.org/abs/2409.07518
Autor:
Gannon, Jonah S., Forbes, Duncan A., Romanowsky, Aaron J., Brodie, Jean P., Haacke, Lydia, Ferré-Mateu, Anna, Danieli, Shany, van Dokkum, Pieter, Buzzo, Maria Luisa, Couch, Warrick J., Shen, Zili
We present spatially resolved Keck Cosmic Web Imager stellar spectroscopy of the Virgo cluster dwarf galaxies VCC 9 and VCC 1448. These galaxies have similar stellar masses and large half-light radii but very different globular cluster (GC) system ri
Externí odkaz:
http://arxiv.org/abs/2405.09098
Autor:
Pfeffer, Joel, Janssens, Steven R., Buzzo, Maria Luisa, Gannon, Jonah S., Bastian, Nate, Bekki, Kenji, Brodie, Jean P., Couch, Warrick J., Crain, Robert A., Forbes, Duncan A., Kruijssen, J. M. Diederik, Romanowsky, Aaron J.
Observational surveys have found that the dynamical masses of ultra-diffuse galaxies (UDGs) correlate with the richness of their globular cluster (GC) system. This could be explained if GC-rich galaxies formed in more massive dark matter haloes. We u
Externí odkaz:
http://arxiv.org/abs/2403.14873
Autor:
Buzzo, Maria Luisa, Forbes, Duncan A., Jarrett, Thomas H., Marleau, Francine R., Duc, Pierre-Alain, Brodie, Jean P., Romanowsky, Aaron J., Gannon, Jonah S., Janssens, Steven R., Pfeffer, Joel, Ferré-Mateu, Anna, Haacke, Lydia, Couch, Warrick J., Lim, Sungsoon, Sánchez-Janssen, Rubén
We use spectral energy distribution (SED) fitting to place constraints on the stellar populations of 59 ultra-diffuse galaxies (UDGs) in the low-to-moderate density fields of the MATLAS survey. We use the routine PROSPECTOR, coupled with archival dat
Externí odkaz:
http://arxiv.org/abs/2402.12033
Autor:
Buzzo, Maria Luisa, Forbes, Duncan A., Brodie, Jean P., Janssens, Steven R., Couch, Warrick J., Romanowsky, Aaron J., Gannon, Jonah S.
Prompted by the many controversial claims involving the NGC 1052 group, including that it hosts two dark matter-free galaxies with overluminous and monochromatic globular cluster (GC) systems, here we map out the large-scale structure (LSS) of GCs ov
Externí odkaz:
http://arxiv.org/abs/2303.16375
Autor:
Buscombe, D.1 daniel@mardascience.com, Warrick, J. A.2, Ritchie, A.2, East, A. E.2, McHenry, M.3, McCoy, R.3, Foxgrover, A.2, Wohl, E.4
Publikováno v:
Earth & Space Science. Aug2024, Vol. 11 Issue 8, p1-38. 38p.
Autor:
Pfeffer, Joel, Cavanagh, Mitchell K., Bekki, Kenji, Couch, Warrick J., Drinkwater, Michael J., Forbes, Duncan A., Koribalski, Bärbel S.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 518, Issue 4, February 2023, Pages 5260-5278
The optical morphology of galaxies is strongly related to galactic environment, with the fraction of early-type galaxies increasing with local galaxy density. In this work we present the first analysis of the galaxy morphology-density relation in a c
Externí odkaz:
http://arxiv.org/abs/2212.08748
Autor:
Gannon, Jonah S., Forbes, Duncan A., Brodie, Jean P., Romanowsky, Aaron J., Couch, Warrick J., Ferré-Mateu, Anna
We examine ultra-diffuse galaxies (UDGs) and their relation to non-UDGs in mass-radius-luminosity space. We begin by publishing Keck/KCWI spectroscopy for the Coma cluster UDG Y358, for which we measure both a recessional velocity and velocity disper
Externí odkaz:
http://arxiv.org/abs/2211.03915
Autor:
Janssens, Steven R., Romanowsky, Aaron J., Abraham, Roberto, Brodie, Jean P., Couch, Warrick J., Forbes, Duncan A., Laine, Seppo, Martínez-Delgado, David, van Dokkum, Pieter G.
We investigate the isolated, quiescent ultra-diffuse galaxy (UDG) DGSAT I and its globular cluster (GC) system using two orbits of Hubble Space Telescope Advanced Camera for Surveys imaging in the F606W and F814W filters. This is the first study of G
Externí odkaz:
http://arxiv.org/abs/2209.09910