Results 81 to 90 of about 455,148 (185)

Supramolecular Aggregates of Amino Acid‐Functionalized 1,8‐Naphthalimides for Chiral Recognition

Chemistry–Methods, Volume 6, Issue 7, July 2026.
We synthesized three self‐assembling, amino acid‐functionalized 1,8‐naphthalimides. We studied their aggregation in solution and demonstrated their chiral recognition ability by fluorescence and resonance light scattering measurements. Notably, these fluorescent probes maintain their chiral recognition ability when incorporated in solid supports like ...
Salvatore Marullo, Francesca D’Anna
wiley   +1 more source

BhaBAR: Big Halpha kinematical sample of BARred spiral galaxies - I. Fabry-Perot Observations of 21 galaxies

, 2005
34 pages, 25 figures, accepted for publication in MNRAS. To obtain a higher resolution version, go to ftp://ftp.astro.umontreal.ca/outgoing/olivier/bhabar.pdf or to http://www.astro.umontreal.ca/fantomm/bhabar/The Halpha gas kinematics of twenty-one ...
Carignan, C., Amram, P., Chemin, L., Daigle, O., Hernandez, O.   +4 more
core   +1 more source

Conditions for Bar Formation in Bulgeless Disk Galaxies

The Astrophysical Journal
While bars are commonly observed in disk galaxies, the precise conditions governing their formation remain incompletely understood. To investigate these conditions, we perform a suite of N -body simulations of bulgeless disk galaxies with stellar masses ...
Dajeong Jang, Woong-Tae Kim, Yun Hee Lee
doaj   +1 more source

3D numerical simulations of magnetic field evolution in barred galaxies and in spiral galaxies under influence of tidal forces

, 2010
We present the results of the three-dimensional, fully non-linear MHD simulations of the large-scale magnetic field evolution in a barred galaxy with the back reaction of magnetic field to gas. We also include the process of the cosmic-ray driven dynamo.
Otmianowska-Mazur, Katarzyna, Kulpa-Dybeł, Katarzyna, Barbara Kulesza-Żydzik, Hubert Siejkowski, Grzegorz Kowal, Siejkowski, Hubert, Kowal, Grzegorz, Katarzyna Kulpa-Dybeł, Kulesza-Żydzik, Barbara, Katarzyna Otmianowska-Mazur   +9 more
core   +1 more source

Stellar population gradients in galaxy discs from the CALIFA survey : the influence of bars [PDF]

, 2014
We acknowledge financial support from the research projects under grants AYA2010-21887-C04-03, AYA2010-21322-C03-03 and AYA2010-15081 by the Spanish Ministerio de Ciencia e Innovación.While studies of gas-phase metallicity gradients in disc galaxies are ...
Wisotzki, L., S. Zibetti, Márquez, I., D. Mast, Papaderos, P., R. García Benito, Rosales-Ortega, F.F., Sánchez, S. F., I. Pérez, Sánchez, S.F., J. Falcón-Barroso, Ruiz Lara, T., P. Sánchez-Blázquez, R. Cid Fernandes, L. Wisotzki, G. van de Ven, de Lorenzo Cáceres, A., P. Papaderos, C. Catalán-Torrecilla, M. Mollá, González Delgado, R., Mendoza, M. A., Aguerri, J.A.L., F. F. Rosales-Ortega, Mendez Abreu, Jairo, Ruiz-Lara, T., Cid Fernandes, R., A. de Lorenzo-Caceres, J. Méndez-Abreu, Zibetti, S., T. Ruiz-Lara, Mendoza, M.A., Iglesias Paramo, Jorge, B. Husemann, Sánchez Blázquez, Patricia, Falcón Barroso, J., Bland-Hawthorn, J., M. A. Mendoza, B. Jungwiert, Catalán Torrecilla, Cristina, Mollá, M., A. Galazzi, C. J. Walcher, A. Gil de Paz, Rosales Ortega, F. F., Mast, D., Marino, Raffaella Anna, Husemann, B., De Amorim, A., J. A. L. Aguerri, Aguerri, J. A. L., Gil De Paz, Armando, Marino, R.A., J. Bland-Hawthorn, A. de Amorim, Pérez, I., R. A. Marino, Walcher, C. J., Méndez Abreu, J., I. Márquez, Walcher, C.J., Galazzi, A., Iglesias-Páramo, J., Jungwiert, B., S. F. Sánchez, R. González Delgado, De Lorenzo-Caceres Rodriguez, Adriana, Catalán-Torrecilla, C., Gil De Paz, A., Van De Ven, G., Falcón-Barroso, J., García Benito, R., Sánchez-Blázquez, P., Jorge Iglesias-Páramo   +73 more
core   +1 more source

Is NGC 4631 a barred spiral galaxy?

The Astronomical Journal, 1991
High- and low-dispersion optical spectra of the giant H II region CM 67 near the center of the edge-on galaxy NGC 4631 have been obtained. Comparisons are made with radio observations to suggest the existence of a large bar in NGC 4631. Region CM 67 is shown to coincide in position with the easternmost peak of a triple radio-continuum source.
Jean-Rene Roy, Jianguo Wang, Robin Arsenault   +2 more
openaire   +1 more source

A Massive Barred Spiral Galaxy at z = 5.102 Discovered by JWST

The Astrophysical Journal
We report M1149-BSG-z5, a barred spiral galaxy at z = 5.102, identified in the parallel field of MACS J1149+2223 with JWST and the Hubble Space Telescope. M1149-BSG-z5 is the highest-redshift barred galaxy candidate to date. Both isophote ellipse fitting
Xiaohan Wang, Fengwu Sun, Yoshihisa Asada, Yunjing Wu, Xiaojing Lin, Shude Mao, Sijia Cai, Zheng Cai, Chian-Chou Chen, Wenlei Chen, Cheng Cheng, Christopher J. Conselice, Miroslava Dessauges-Zavadsky, Daneil Espada, Brenda L. Frye, Jean-Baptiste Jolly, Kotaro Kohno, Mingyu Li, Nicholas Martis, Hideki Umehata, Weichen Wang, Rogier A. Windhorst, Adi Zitrin   +22 more
doaj   +1 more source

Circumnuclear Regions In Barred Spiral Galaxies

, 2000
We present sub-arcsecond resolution ground-based near-infrared images of the central regions of a sample of twelve barred galaxies with circumnuclear star formation activity, which is organized in ring-like regions typically one kiloparsec in diameter ...
Laine, S., Nadeau, D., Doyon, R., Peletier, R. F., Knapen, J. H., Perez-Ramirez, D.   +5 more
core  

Formation Mechanisms for Spirals in Barred Galaxies

, 2000
We consider a scenario of formation of the spiral structure in barred galaxies. This scenario includes the new non-resonant mechanism of elongation of spirals, due to the characteristic behaviour of the gravitational potential beyond the principal spiral arms.
Polyachenko, Evgenii V., Polyachenko, Valerij L.   +1 more
openaire   +2 more sources

Dynamical Mechanism of Episodic Gas Accretion to the Central Region of Spiral Galaxies

The Astrophysical Journal
We performed N -body/smoothed particle hydrodynamics simulations of isolated spiral galaxies with various bulge-to-disk mass ratios ( M _bulge / M _disk ) from 0.02 to 0.2 to investigate mass transport from galactic scales (10 kpc) down to circumnuclear ...
Naomichi Yutani, Nozomu Kawakatu, Takayuki Saitoh, Keiichi Wada   +3 more
doaj   +1 more source