Zobrazeno 1 - 10
of 11 439
pro vyhledávání: '"Danieli, A"'
Autor:
Tang, Yimeng, Romanowsky, Aaron J., van Dokkum, Pieter G., Jarrett, T. H., Bundy, Kevin A., Buzzo, Maria Luisa, Danieli, Shany, Gannon, Jonah S., Keim, Michael A., Laine, Seppo, Shen, Zili
NGC 1052-DF2 and -DF4 are two ultra-diffuse galaxies that have been reported as deficient in dark matter and associated with the same galaxy group. Recent findings suggest that DF2 and DF4 are part of a large linear substructure of dwarf galaxies tha
Externí odkaz:
http://arxiv.org/abs/2410.19331
Autor:
Mintz, Abby, Greene, Jenny E., Kado-Fong, Erin, Danieli, Shany, Li, Jiaxuan, Luo, Yifei, Leauthaud, Alexie, Baldassare, Vivienne, Huang, Song, Peter, Annika H. G., Bhattacharyya, Joy, Li, Mingyu, Pan, Yue
Using medium-band imaging from the newly released Merian Survey, we conduct a nonparametric morphological analysis of H$\alpha$ emission maps and stellar continua for a sample of galaxies with $8\lesssim\log (M_\star/M_\odot) < 10.3$ at $0.064
Externí odkaz:
http://arxiv.org/abs/2410.01886
Autor:
Danieli, Shany, Kado-Fong, Erin, Huang, Song, Luo, Yifei, Li, Ting S, Kelvin, Lee S, Leauthaud, Alexie, Greene, Jenny E., Mintz, Abby, Lin, Xiaojing, Li, Jiaxuan, Baldassare, Vivienne, Banerjee, Arka, Bhattacharyya, Joy, Blanco, Diana, Brooks, Alyson, Cai, Zheng, Chen, Xinjun, Cruz, Akaxia, Geda, Robel, Guan, Runquan, Johnson, Sean, Kannawadi, Arun, Kim, Stacy Y., Li, Mingyu, Lupton, Robert, Mace, Charlie, Medina, Gustavo E., Pan, Yue, Peter, Annika H. G., Read, Justin I., Rosado, Rodrigo Córdova, Seifert, Allen, Wasleske, Erik J., Wick, Joseph
We present the Merian Survey, an optical imaging survey optimized for studying the physical properties of bright star-forming dwarf galaxies. Merian is carried out with two medium-band filters ($N708$ and $N540$, centered at $708$ and $540$ nm), cust
Externí odkaz:
http://arxiv.org/abs/2410.01884
Non-Abelian Thouless pumping intertwines adiabatic quantum control and topological quantum transport and it holds potential for quantum metrology and computing. In this work, we introduce a ladder model featuring two doubly-degenerate bands and we sh
Externí odkaz:
http://arxiv.org/abs/2409.20136
Autor:
Li, Dayi, Eadie, Gwendolyn, Brown, Patrick, Harris, William, Abraham, Roberto, van Dokkum, Pieter, Janssens, Steven, Berek, Samantha, Danieli, Shany, Romanowsky, Aaron, Speagle, Joshua
We present \textsc{Mathpop}, a novel method to infer the globular cluster (GC) counts in ultra-diffuse galaxies (UDGs) and low-surface brightness galaxies (LSBGs). Many known UDGs have a surprisingly high ratio of GC number to surface brightness. How
Externí odkaz:
http://arxiv.org/abs/2409.06040
Autor:
Ramapuram, Jason, Danieli, Federico, Dhekane, Eeshan, Weers, Floris, Busbridge, Dan, Ablin, Pierre, Likhomanenko, Tatiana, Digani, Jagrit, Gu, Zijin, Shidani, Amitis, Webb, Russ
Attention is a key part of the transformer architecture. It is a sequence-to-sequence mapping that transforms each sequence element into a weighted sum of values. The weights are typically obtained as the softmax of dot products between keys and quer
Externí odkaz:
http://arxiv.org/abs/2409.04431
It is well known that almost all isolated dwarf galaxies are actively forming stars. We report the discovery of Hedgehog, an isolated quiescent dwarf galaxy at a distance of $2.41\pm0.14$ Mpc with a stellar mass of $M_\star \approx 10^{5.8}\, M_\odot
Externí odkaz:
http://arxiv.org/abs/2406.00101
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
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
Flat bands - single-particle energy bands - in tight-binding networks have attracted attention due to the presence of macroscopic degeneracies and their extreme sensitivity to perturbations. This makes them natural candidates for emerging exotic phas
Externí odkaz:
http://arxiv.org/abs/2403.17578