Results 21 to 30 of about 230,790 (340)

Bar Formation in Milky Way type Galaxies

Open Astronomy, 2016
Many barred galaxies, possibly including the Milky Way, have cusps in their centers. There is a widespread belief, however, that the usual bar instability, which occurs in bulgeless galaxy models, is impossible for cuspy models because of the presence of
Polyachenko E. V., Berczik P., Just A.
doaj   +1 more source

EMPRESS. IX. Extremely Metal-poor Galaxies are Very Gas-rich Dispersion-dominated Systems: Will the James Webb Space Telescope Witness Gaseous Turbulent High-z Primordial Galaxies?

The Astrophysical Journal, 2023
We present kinematics of six local extremely metal-poor galaxies (EMPGs) with low metallicities (0.016–0.098 Z _⊙ ) and low stellar masses (10 ^4.7 –10 ^7.6 M _⊙ ).
Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, Shinobu Ozaki, Nicolas F. Bouché, John H. Wise, Yi Xu, Eric Emsellem, Haruka Kusakabe, Takashi Hattori, Tohru Nagao, Gen Chiaki, Hajime Fukushima, Yuichi Harikane, Kohei Hayashi, Yutaka Hirai, Ji Hoon Kim, Michael V. Maseda, Kentaro Nagamine, Takatoshi Shibuya, Yuma Sugahara, Hidenobu Yajima, Shohei Aoyama, Seiji Fujimoto, Keita Fukushima, Shun Hatano, Akio K. Inoue, Tsuyoshi Ishigaki, Masahiro Kawasaki, Takashi Kojima, Yutaka Komiyama, Shuhei Koyama, Yusei Koyama, Chien-Hsiu Lee, Akinori Matsumoto, Ken Mawatari, Takashi J. Moriya, Kentaro Motohara, Kai Murai, Moka Nishigaki, Masato Onodera, Yoshiaki Ono, Michael Rauch, Tomoki Saito, Rin Sasaki, Akihiro Suzuki, Tsutomu T. Takeuchi, Hiroya Umeda, Masayuki Umemura, Kuria Watanabe, Kiyoto Yabe, Yechi Zhang   +51 more
doaj   +1 more source

Deep Learning for Galaxy Mergers in the Galaxy Main Sequence [PDF]

, 2019
Starburst galaxies are often found to be the result of galaxy mergers. As a result, galaxy mergers are often believed to lie above the galaxy main sequence: the tight correlation between stellar mass and star formation rate.
Pearson, William J., Petrillo, Carlo E., Trayford, James, van der Tak, Floris F. S., Wang, Lingyu   +4 more
core   +3 more sources

Spatially Resolved Stellar Populations of 0.3 < z < 6.0 Galaxies in WHL 0137–08 and MACS 0647+70 Clusters as Revealed by JWST: How Do Galaxies Grow and Quench over Cosmic Time?

The Astrophysical Journal, 2023
We study the spatially resolved stellar populations of 444 galaxies at 0.3 < z < 6.0 in two clusters (WHL 0137–08 and MACS 0647+70) and a blank field, combining imaging data from the Hubble Space Telescope and JWST to perform spatially resolved spectral ...
Abdurro’uf, Dan Coe, Intae Jung, Henry C. Ferguson, Gabriel Brammer, Kartheik G. Iyer, Larry D. Bradley, Pratika Dayal, Rogier A. Windhorst, Adi Zitrin, Ashish Kumar Meena, Masamune Oguri, Jose M. Diego, Vasily Kokorev, Paola Dimauro, Angela Adamo, Christopher J. Conselice, Brian Welch, Eros Vanzella, Tiger Yu-Yang Hsiao, Xinfeng Xu, Namrata Roy, Celia R. Mulcahey   +22 more
doaj   +1 more source

Properties of Galaxy Groups in the SDSS: II.- AGN Feedback and Star Formation Truncation [PDF]

, 2006
Successfully reproducing the galaxy luminosity function and the bimodality in the galaxy distribution requires a mechanism that can truncate star formation in massive haloes.
B. Moore, D. J. Croton, F. C. Van Den Bosch, H. J. Mo, Quilis, S. M. Weinmann, X. Yang   +6 more
core   +3 more sources

Joint galaxy–galaxy lensing and clustering constraints on galaxy formation [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We compare predictions for galaxy–galaxy lensing profiles and clustering from the Henriques et al. public version of the Munich semi-analytical model (SAM) of galaxy formation and the IllustrisTNG suite, primarily TNG300, with observations from KiDS + GAMA and SDSS-DR7 using four different selection functions for the lenses ...
Malin Renneby, Bruno M B Henriques, Stefan Hilbert, Dylan Nelson, Mark Vogelsberger, Raúl E Angulo, Volker Springel, Lars Hernquist   +7 more
openaire   +4 more sources

Galaxy Formation Spanning Cosmic History [PDF]

, 2010
Over the past several decades, galaxy formation theory has met with significant successes. In order to test current theories thoroughly we require predictions for as yet unprobed regimes.
Benson, Andrew J., Bower, Richard G.
core   +4 more sources

Two-phase galaxy formation [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
We propose and test a scenario for the assembly and evolution of luminous matter in galaxies which substantially differs from that adopted by other semianalytic models. As for the dark matter (DM), we follow the detailed evolution of halos within the canonical LCDM cosmology using standard Montecarlo methods.
Cook, M, . Lapi, A., Granato, G. L.
openaire   +4 more sources

Galaxy Populations in Groups and Clusters: Evidence for a Characteristic Stellar Mass Scale at M ∗ ∼ 109.5 M ⊙

The Astrophysical Journal, 2023
We use the DR9 of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass M _h ≥ 10 ^12 M _⊙ and redshift 0.01 ≤ z ≤ 0.08, down to a limiting r -band magnitude of M _r = −10 to −
Jiacheng Meng, Cheng Li, H. J. Mo, Yangyao Chen, Zhen Jiang, Lizhi Xie   +5 more
doaj   +1 more source

Quasar induced galaxy formation: a new paradigm ? [PDF]

, 2009
We discuss observational evidence that quasars play a key role in the formation of galaxies starting from the detailed study of the quasar HE0450-2958 and extending the discussion to a series of converging evidence that radio jets may trigger galaxy ...
Alexander, Bahcall, Bahcall, Bahcall, Begelman, Bell, Bicknell, Bohlin, Brinchmann, Bundy, Calzetti, Canalizo, Chary, Comerford, Cowie, Crawford, Croft, Croton, Croton, D. Elbaz, D. Le Borgne, David, de Grijp, Dekel, Dey, Dey, Di Matteo, Di Matteo, Dickson, E. Pantin, Ebeling, Elbaz, Elvis, Fabian, Fanarof, Favata, Feain, Ferrarese, Ferrarese, Fioc, Fitzpatrick, Fragile, Fu, Fu, G. Letawe, Gebhardt, Genzel, Guzman, Haehnelt, Hasinger, Heavens, Hoffman, Hutchings, Hutchings, Jahnke, Juneau, K. Jahnke, Kennicutt, Kim, King, Klamer, Kodama, Kormendy, Letawe, Letawe, Letawe, Letawe, Li, Low, Maddox, Magain, Magain, Magorrian, Manka, Marconi, Matthews, McCarthy, McCarthy, McLeod, McLure, McLure, McLure, Merritt, Mikkola, Miley, Mirabel, Natarajan, Nesvadba, Nesvadba, Nesvadba, Netzer, Ocvirk, Ooosterloo, Panter, Papadopoulos, Papadopoulos, Pipino, Rees, Rejkuba, Richstone, Riechers, Riechers, Sage, Sandage, Sanders, Sanders, Schawinski, Shields, Silk, Silk, Stockton, Stockton, Stockton, Stockton, Stockton, Tadhunter, Thomas, Thompson, Treu, Van Breugel, Vilenkin, Wampler, Willmer, Willott, Willott, Woo, Zirm   +126 more
core   +3 more sources