Results 41 to 50 of about 80,963 (169)

$z\sim2$ dual AGN host galaxies are disky: stellar kinematics in the ASTRID Simulation

The Open Journal of Astrophysics
We study dual AGN host galaxy morphologies at $z=2$ using the ASTRID simulation, selecting black hole (BH) pairs with small separation ($\Delta r10^7M_\odot$), and luminosity ($L_{\text{bol,12}}>10^{43}\rm{erg/s}$).
Ekaterine Dadiani, Tiziana Di Matteo, Nianyi Chen, Patrick Lachance, Yu-Ching Chen, Yue Shen, Rupert Croft, Yueying Ni, Simeon Bird   +8 more
doaj   +1 more source

An autonomous and economical benthic incubation chamber for measuring dissolved oxygen fluxes in shallow, low‐flow environments

Limnology and Oceanography: Methods, EarlyView.
Abstract Benthic incubation chambers enclose a known volume of water overlying a known area to measure water chemistry changes and are typically used to quantify the metabolic activity of benthic organisms or communities. Here we present an economical benthic incubation chamber for shallow, low‐flow environments, built using off‐the‐shelf components ...
Luke D. Groff, Peter Berg, Karen J. McGlathery   +2 more
wiley   +1 more source

H i Observations of Giant Low Surface Brightness Galaxies

The Astrophysical Journal
Giant low surface brightness (gLSB) galaxies are galaxies with extremely extended, faint, optical disks over 50 kpc in radius and have high total masses, which can reach 10 ^12 M _⊙ .
Philip Lah, Nikhil Arora, Ivan Yu. Katkov, Joseph D. Gelfand, Anna S. Saburova, Igor V. Chilingarian, Ivan Gerasimov, Damir Gasymov   +7 more
doaj   +1 more source

An Explanation for the Overrepresentation of Tidal Disruption Events in Post-starburst Galaxies

The Astrophysical Journal, 2023
Tidal disruption events (TDEs) provide a valuable probe for studying the dynamics of stars in the nuclear environments of galaxies. Recent observations show that TDEs are strongly overrepresented in post-starburst or “green valley” galaxies, although the
Mengye Wang, Yiqiu Ma, Qingwen Wu, Ning Jiang   +3 more
doaj   +1 more source

Forming double-barred galaxies from dynamically cool inner disks [PDF]

, 2015
About one-third of early-type barred galaxies host small-scale secondary bars. The formation and evolution of such double-barred (S2B) galaxies remain far from being well understood.
Bertin G., Combes F. ed Shlosman I., Corsini E. M., de Lorenzo-Cáceres A., Debattista V. P., Debattista V. P., Debattista V. P., Dekel A., Elmegreen B. G., Englmaier P., Erwin P., Friedli D., Heller C., Heller C. H., Jenkins A., Juntai Shen, Laine S., Maciejewski W., Min Du, Petitpas G. R., Rautiainen P., Sellwood J. A., Shen J., Shlosman I., Silverman B. W., Toomre A. ed Fall S. M., Victor P. Debattista   +26 more
core   +2 more sources

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

On the Stellar Disk Vertical Scale Height of Edge-on Galaxies from S4G

The Astrophysical Journal
Disk galaxies viewed as thin planar structures resulting from the conservation of angular momentum of an initially rotating pregalactic cloud allow merely a first-order model of galaxy formation, but the presence of vertically extended structures has ...
Notahiana Ranaivoharimina, T. Randriamampandry, Jing Wang, K. Menéndez-Delmestre, T. S. Gonçalves   +4 more
doaj   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Are disk galaxies the progenitors of giant ellipticals? [PDF]

, 2007
A popular formation scenario for giant elliptical galaxies proposes that they might have formed from binary mergers of disk galaxies. Difficulties with the scenario that emerged from earlier studies included providing the necessary stellar mass and ...
Barden, Bell, Bell, Bell, Bender, Bender, Bender, Bender, Binney, Brinchmann, Ciotti, Cox, Côté, Côté, Dasyra, Dasyra, Davies, de Jong, Dehnen, di Serego Alighieri, Ferrarese, Genzel, Gerhard, Gerhard, González-García, Hogg, Hogg, Hopkins, Hopkins, Hopkins, Hubble, Jeremiah P. Ostriker, Jesseit, Johansson, Khochfar, Khochfar, Kormendy, Kriek, Larson, Larson, Larson, Li, McIntosh, Naab, Naab, Naab, Naab, Nagamine, Nakamura, Negroponte, Ostriker, Rix, Robertson, Robertson, Rothberg, Rothberg, Springel, Surma, Thomas, Thorsten Naab, Toomre, Toomre, Treu, Trujillo, Trujillo, van der Wel, van Dokkum, van Dokkum, van Dokkum, White   +69 more
core   +4 more sources

Emergence and Genomic Characterization of a Hypervirulent Klebsiella pneumoniae Isolate From a New Clone in Brazil

Microbiology and Immunology, EarlyView.
ABSTRACT Hypervirulent Klebsiella pneumoniae (hvKp) has emerged globally as a major public health concern, often associated with severe community‐acquired and healthcare‐associated human infections. Despite alerts from PAHO/WHO on convergent hvKp strains with multidrug resistance in Latin America, comprehensive data from Brazil, the region's largest ...
Carlos Henrique Camargo, Ana Beatriz Nascimento Costa, Amanda Yaeko Yamada, Daniel de Sena Miranda, Pedro Smith Pereira Ferraro, Andreia Rodrigues de Souza, Amanda Maria de Jesus Bertani, Karoline Rodrigues Campos, Marlon Benedito Nascimento Santos, Rafaela Mastrangelo Rissetti, Carolina Lechinski de Paula, Patrik Júnior de Lima Paz, Maria Solange Duarte Soares, Christiane Salvador, Giovanna de Pinho Pieri, Jorge Siguemassa Higa, Daniela dos Santos Souza, Márcio Garcia Ribeiro, Claudio Tavares Sacchi, Monique Ribeiro Tiba‐Casas, Geraldine Madalosso, Denise Brandao de Assis   +21 more
wiley   +1 more source