Results 51 to 60 of about 455,148 (185)

Multicolor Photometry of Barred Spiral Galaxies [PDF]

International Astronomical Union Colloquium, 1996
B – V and R – I color maps (from CCD imagery obtained at Cerro Tololo Inter-American Observatory) of six barred spiral galaxies have been used (Horst 1992) to investigate stellar populations within the bars and nuclei. Two-color diagrams show that the distribution of pixel colors largely parallels the expected locus for normal unreddened stars. If the “
William D. Horst, Charles J. Peterson
openaire   +1 more source

Cosmic Ray Anisotropy Generated by the June 22nd 2015 Interplanetary Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract On 22 June 2015, the near Earth interplanetary space was perturbed by a series of high‐speed streamers and interplanetary coronal mass ejections associated with an active region and two low‐latitude coronal holes. The interaction of these disturbances gave rise to the complex solar wind structure observed at 1 au.
A. Lara, K. P. Arunbabu, T. Niembro
wiley   +1 more source

H IIRegion Statistics in Barred and Non-Barred Galaxies [PDF]

, 1996
We present new high quality Ha continuum-subtracted images of the grand design galaxies NGC 157, NGC 3631, NGC 6764, and NGC 6951, two of them barred and two non-barred, and describe the statistical properties of the HII regions.
Knapen, J., Rozas, M., Beckman, J.E.
core   +5 more sources

On the Role of Noncircular Motions in MaNGA Galaxies. I. Global Properties

The Astrophysical Journal
Noncircular (NC) motions represent the imprints of nonaxisymmetric structures in galaxies, providing opportunities to study the physical properties of gas departing from circular rotation.
Carlos López-Cobá, Lihwai Lin, Justus Neumann, Matthew A. Bershady   +3 more
doaj   +1 more source

Tracing evolutionary pathways of bar-driven quenching in local Universe disk galaxies

Astronomy & Astrophysics
Bars play an integral role in regulating star formation in spiral galaxies, from triggering central starbursts to driving quenching. The diverse star formation morphologies observed in local barred galaxies reflect different evolutionary stages of the ...
Renu D., Subramanian S., George K.
doaj   +1 more source

Genomic Insights Into the Multimetal Resilience and Biofilm‐Templated Nanorod Biosynthesis of Stenotrophomonas bentonitica BII‐R7: Bioremediation and Green Nanotechnology Implications

Microbial Biotechnology, Volume 19, Issue 9, September 2026.
Biofilm extracellular polymeric substances (EPS) in Stenotrophomonas bentonitica BII‐R7 direct the formation of crystalline trigonal selenium nanorods. Comparative genomics identifies a unique genetic toolkit underpinning EPS composition and metal resilience, positioning this strain as a platform for bioremediation and green nanomaterial synthesis ...
Eduardo Perez‐Muelas, Miguel Angel Ruiz‐Fresneda, Guillermo Lazuen‐Lopez, Tatiana Lopez‐Perez, Fouad Eddaoudi‐Lakraichi, Mohammed Bakkali, Mohamed Larbi Merroun   +6 more
wiley   +1 more source

An atlas of mid-infrared dust emission in spiral galaxies [PDF]

, 2001
We present maps of dust emission at 7 microns and 15 microns/7 microns intensity ratios of selected regions in 43 spiral galaxies observed with ISOCAM.
J. Lequeux, Bonoli, C, Gallais, P, P. Gallais, Lequeux, J, Hawarden, T G, Vigroux, L, Mazzei, P, M. Sauvage, H. Roussel, Sauvage, M, P. Mazzei, L. Vigroux, Roussel, H, C. Bonoli, Bosma, A, S. Madden, A. Bosma, T. Hawarden, Madden, S   +19 more
core   +1 more source

Assisted Gene Flow Yields Physiologically Robust Acropora palmata With Novel Allelic and Transcriptomic Profiles

Evolutionary Applications, Volume 19, Issue 9, September 2026.
ABSTRACT Assisted gene flow (AGF) is a conservation approach that facilitates the spread of alleles and may accelerate the recovery of genetically depauperate populations. The threatened Caribbean coral Acropora palmata is approaching regional extinction within the western Atlantic partly due to increasing water temperatures associated with global ...
Erinn M. Muller, Chelsea Petrik, Trinity Conn, C. Cornelia Osborne, Marina Villoch, Abigail S. Clark, Hanna R. Koch, Keri O'Neil, Cody Engelsma, Iliana B. Baums   +9 more
wiley   +1 more source

Measuring Bar and Spiral Arm Pattern Speeds in MaNGA Barred Spiral Galaxies

We measure independent pattern speeds for bar and spiral arms in 98 barred spiral galaxies with Mapping Nearby Galaxies at Apache Point Observatory data.
Géron, Tobias, Pearlstein, Tessa, Masters, Karen   +2 more
core   +1 more source

SDSS-IV MaNGA: Physical Origins of Double-peaked Narrow Emission-line Spaxels in Barred Galaxies

The Astrophysical Journal
The physical origins of double-peaked narrow emission-line spaxels (DPSs) in barred galaxies are explored through the analysis of a sample of 72 barred double-peaked emission-line galaxies (DPGs) extracted from the MaNGA data set.
Jiajie Qiu, Shiyin Shen, Ruixiang Chang, Qianwen Zhao, Qi Zeng   +4 more
doaj   +1 more source