Zobrazeno 1 - 10
of 777
pro vyhledávání: '"Romanowsky, A. 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:
Carlin, Jeffrey L., Sand, David J., Mutlu-Pakdil, Burcin, Crnojevic, Denija, Doliva-Dolinsky, Amandine, Garling, Christopher T., Peter, Annika H. G., Brodie, Jean P., Forbes, Duncan A., Hargis, Jonathan R., Romanowsky, Aaron J., Spekkens, Kristine, Strader, Jay, Willman, Beth
We present the first comprehensive census of the satellite population around a Large Magellanic Cloud (LMC) stellar-mass galaxy, as part of the Magellanic Analog Dwarf Companions and Stellar Halos (MADCASH) survey. We have surveyed NGC 2403 (D=3.0 Mp
Externí odkaz:
http://arxiv.org/abs/2409.17437
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
Publikováno v:
Research Notes of the American Astronomical Society, 8, 202 (2024)
Two low surface brightness (LSB) dwarf galaxies were identified recently as having little or no dark matter (DM), provoking widespread interest in their formation histories. These galaxies also host populous systems of star clusters that are on avera
Externí odkaz:
http://arxiv.org/abs/2408.12663
Autor:
van Dokkum, Pieter, Li, Dayi David, Abraham, Roberto, Danieli, Shany, Eadie, Gwendolyn M., Harris, William E., Romanowsky, Aaron J.
Publikováno v:
Res. Notes AAS, 8, 135 (2024)
CDG-1 is a tight grouping of four likely globular clusters in the Perseus cluster, and a candidate dark galaxy with little or no diffuse light. Here we provide new constraints on the luminosity of any underlying stellar emission, using HST/UVIS F200L
Externí odkaz:
http://arxiv.org/abs/2405.12907
A number of nearby dwarf galaxies have globular cluster (GC) candidates that require spectroscopic confirmation. Here we present Keck telescope spectra for 15 known GCs and GC candidates that may be associated with a host dwarf galaxy, and an additio
Externí odkaz:
http://arxiv.org/abs/2405.11749
Autor:
Gannon, Jonah S., Ferré-Mateu, Anna, Forbes, Duncan A., Brodie, Jean P., Buzzo, Maria Luisa, Romanowsky, Aaron J.
In order to help facilitate the future study of ultra-diffuse galaxies (UDGs) we compile a catalogue of their spectroscopic properties. Using it, we investigate some of the biases inherent in the current UDG sample that have been targeted for spectro
Externí odkaz:
http://arxiv.org/abs/2405.09104
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