Results 91 to 100 of about 341,567 (228)

Galaxy Zoo:dust in spiral galaxies [PDF]

, 2010
We investigate the effect of dust on spiral galaxies by measuring the inclination dependence of optical colours for 24 276 well-resolved Sloan Digital Sky Survey (SDSS) galaxies visually classified via the Galaxy Zoo project.
Masters, Karen L., Murray, P, Bamford, S, Slosar, Anze, Thomas, Daniel Georg, Vandenberg, J, Keel, WC, Bamford, Steven, Szalay, Alexander S., Mosleh, Moein, Andreescu, Dan, Bamford, Steven P., Andreescu, D, Thomas, Daniel, Thomas, D, Nichol, Robert, Nichol, R, Edmondson, Edward M., Vandenberg, Jan, Murray, Phil, Lintott, Chris J., Schawinski, Kevin, Masters, KL, Schawinski, K, Raddick, MJ, Keel, William C., Szalay, AS, Mosleh, M, Edmondson, EM, Slosar, A, Lintott, CJ, Nichol, RC, Raddick, M. Jordan   +32 more
core   +1 more source

The formation of satellite galaxies and their associated black holes [PDF]

, 2006
Not ...
Libeskind, Noam Isaac
core  

A Search for Pure Disk Galaxies [PDF]

, 2003
Flat (or superthin) galaxies are late-type edge-on spiral galaxies that exhibit large axial ratios, small stellar disk scale heights and no distinct spheroidal bulge component.
Kautsch, Stefan, Kautsch, Stefan J., Grebel, Eva K.   +2 more
core   +2 more sources

Kaempferol Attenuates Spaceflight‐Associated Knee Cartilage Degradation by Targeting NOX4‐Mediated Mitochondrial Dysfunction

Advanced Science, Volume 13, Issue 48, 28 August 2026.
We have shown that both simulated and actual spaceflight contribute to cartilage degradation in the knees of mice. Using RNA sequencing and bioenergetic profiling, we identified NADPH oxidase 4 (NOX4) as a key factor driving these changes. Additionally, we found that kaempferol, a naturally occurring flavonoid that binds directly to NOX4, reduces ...
Yuesong Yin, Ruiling Xu, Meagan J. Makarczyk, Jia‐Jun Liu, Silvia Liu, Matthew Z. Shi, Roberta Di Carlo, Michael F. Almeida, Alex Garris, Sarah Day, Rebekah Sanchez‐Hodge, Jonathan C. Schisler, Aleeza H. Zilberman, Noah G. Allen, Angela J. Kubik, Elizabeth A. Blaber, Arnold Z. Olali, Wanqing Xie, Douglas C. Wallace, Christopher E. Mason, Peter G. Alexander, Giuseppe Intini, Afshin Beheshti, Hang Lin   +23 more
wiley   +1 more source

Stellar CoRGI in MaNGA: Stellar Counterrotating Galaxies Identified in the MaNGA Survey

The Astrophysical Journal Supplement Series
Stellar counterrotating (CR) galaxies are systems hosting two large-scale stellar components rotating in opposite directions—a main, preexisting galaxy body with an older stellar population and a younger CR stellar disk likely formed from externally ...
Damir Gasymov, Ivan Yu. Katkov, Evgenii V. Rubtsov, Anna S. Saburova, Alexei Yu. Kniazev, Joseph D. Gelfand, Olga K. Sil’chenko, Igor V. Chilingarian, Alexei V. Moiseev, Anastasia V. Kasparova, Anatoly V. Zasov   +10 more
doaj   +1 more source

The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory

Astronomische Nachrichten, Volume 347, Issue 7, August 2026.
ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth, Paško Roje, Stella Vješnica, Stefan Cikota, Alex J. Brown, Mike Kretlow, Marco Azzaro, Santiago Reinhart, Jesús Aceituno, Harry Dawson, Carsten Denker, Torsten Enßlin, Stephan Geier, Thomas Granzer, Thomas Kupfer, Gianluca Li Causi, Samaya Nissanke, José Luis Ortiz, Fernando Pedichini, Katja Poppenhäger, Axel Schwope   +20 more
wiley   +1 more source

Formation of Galactic Disks. I. Why Did the Milky Way’s Disk Form Unusually Early?

The Astrophysical Journal
Recent results from spectroscopic and astrometric surveys of nearby stars suggest that the stellar disk of our Milky Way (MW) was formed quite early, within the first few billion years of its evolution.
Vadim A. Semenov, Charlie Conroy, Vedant Chandra, Lars Hernquist, Dylan Nelson   +4 more
doaj   +1 more source

Tracing the dynamical and structural complexity of spiral galaxy centres

Astronomy & Astrophysics
Context. The formation and evolution of late-type galaxies have traditionally been described in terms of two pathways, one producing pressure-supported classical bulges and the other producing rotationally supported pseudo-bulges.
Breda Iris, van de Ven Glenn, Thater Sabine, Falcón-Barroso J., Jethwa Prashin, Onodera Masato, Schaye Joop, Brinchmann Jarle, Ziegler Bodo, Mauro Federica   +9 more
doaj   +1 more source

Ground‐Based Solar Radio Observations From the Mexican e‐Callisto Stations During the May 2024 Extreme Space Weather Events

Space Weather, Volume 24, Issue 8, August 2026.
Abstract The period from 1 to 14 May 2024 was marked by some of the most intense solar activity of Solar Cycle 25, including multiple X‐class flares, fast coronal mass ejections (CMEs), and diverse solar radio emissions. We present observations from the Mexican e‐Callisto network (REC‐Mx), including long‐duration continuum emissions (CTMs), Type II ...
E. Aguilar‐Rodriguez, G. Baron, R. Gutiérrez‐Zalapa, C. Y. Cruz‐Rodríguez, M. Rodriguez‐Martinez, M. A. Chacón, E. Romero‐Hernandez, K. S. Caballero‐Mora, J. Ramírez Vélez, E. Andrade‐Mascote, P. Villanueva‐Hernandez, I. A. Peralta‐Mendoza, J. Herrera, J. H. Castro‐Chacón, E. Perez‐Tijerina, J. A. Gonzalez‐Esparza, H. de León‐Hidalgo, R. Arceo‐Reyes, O. G. Morales‐Olivares, D. A. Garcia‐Sanchez, J. E. Perez‐Leon, C. Monstein, J. Bussons Gordo, M. Prieto Mateo   +23 more
wiley   +1 more source

The star formation history of early-type galaxies in the fornax cluster [PDF]

, 1998
We have measured central line strengths and line-strength gradients for a complete sample of early-type galaxies in the Fornax cluster, comprising 11 elliptical and 11 lenticular galaxies, more luminous than M(_B) = -17.
Kuntschner, Harald, Kuntschner, H.
core