Results 81 to 90 of about 473,820 (316)

The Identification of a Dusty Multiarm Spiral Galaxy at z = 3.06 with JWST and ALMA

The Astrophysical Journal Letters, 2022
Spiral arms serve crucial purposes in star formation and galaxy evolution. In this paper, we report the identification of “A2744-DSG- z 3,” a dusty, multiarm spiral galaxy at z = 3.059 using the James Webb Space Telescope (JWST) NIRISS imaging and grism ...
Yunjing Wu, Zheng Cai, Fengwu Sun, Fuyan Bian, Xiaojing Lin, Zihao Li, Mingyu Li, Franz E. Bauer, Eiichi Egami, Xiaohui Fan, Jorge González-López, Jianan Li, Feige Wang, Jinyi Yang, Shiwu Zhang, Siwei Zou   +15 more
doaj   +1 more source

The DiskMass Survey VII. The distribution of luminous and dark matter in spiral galaxies [PDF]

, 2013
We present dynamically-determined rotation-curve mass decompositions of 30 spiral galaxies, which were carried out to test the maximum-disk hypothesis and to quantify properties of their dark-matter halos.
T. Martinsson, M. Verheijen, K. Westfall, M. Bershady, D. Andersen, R. Swaters   +5 more
semanticscholar   +1 more source

Magnetic fields in spiral galaxies [PDF]

The Astronomy and Astrophysics Review, 1990
Published in A&ARev (2016) 24 ...
openaire   +5 more sources

Scaling Relations of Spiral Galaxies [PDF]

The Astrophysical Journal, 2007
We construct a large data set of global structural parameters for 1300 field and cluster spiral galaxies and explore the joint distribution of luminosity L, optical rotation velocity V, and disk size R at I- and 2MASS K-bands. The I- and K-band velocity-luminosity (VL) relations have log-slopes of 0.29 and 0.27, respectively with sigma_ln(VL)~0.13, and
Courteau, Stéphane, Dutton, Aaron A., van den Bosch, Frank C., MacArthur, Lauren A., Dekel, Avishai, McIntosh, Daniel H., Dale, Daniel A.   +6 more
openaire   +5 more sources

A New Statistical Analysis of the Morphology of Spiral Galaxies

The Astronomical Journal
Morphology is the starting point for understanding galaxies. Elmegreen et al. classified spiral galaxies into flocculent, multiple-arm, and grand-design galaxies based on the regularity of their spiral arm structure.
Junye Wei, Ye Xu, Zehao Lin, Chaojie Hao, Yingjie Li, Dejian Liu, Shuaibo Bian   +6 more
doaj   +1 more source

Molecular Gas in Spiral Galaxies

, 1997
In this review, I highlight a number of recent surveys of molecular gas in nearby spiral galaxies. Through such surveys, more complete observations of the distribution and kinematics of molecular gas have become available for galaxies with a wider range ...
A Boselli, AJ Baker, BG Elmegreen, BG Elmegreen, BG Elmegreen, BK Rownd, CA Norman, CD Wilson, CD Wilson, CD Wilson, D Friedli, E Athanassoula, F Bertoldi, H Hafok, J Braine, K Nishiyama, K Sakamoto, K Sakamoto, K Sheth, K. Nishiyama, L Loinard, L Loinard, LJ Sage, LP Crosthwaite, LP Crosthwaite, M Dumke, M Hidaka, M Honma, MD Thornley, MW Regan, N Arimoto, P Crosthwaite, P Maloney, P Maloney, RC Kennicutt Jr., RC Kennicutt Jr., S Berman, S Berman, S Chakrabarti, S Jogee, T Böker, T Wong, TAD Paglione, TM Dame, TM Dame, Tony Wong, TT Helfer, Y Sofue, Y Sofue, Y Sofue, Y Sofue   +50 more
core   +2 more sources

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

JWST Reveals a Surprisingly High Fraction of Galaxies Being Spiral-like at 0.5 ≤ z ≤ 4

The Astrophysical Journal Letters
Spiral arms are one of the most important features used to classify the morphology of local galaxies. The cosmic epoch when spiral arms first appeared contains essential clues to the evolution of disk galaxies.
Vicki Kuhn, Yicheng Guo, Alec Martin, Julianna Bayless, Ellie Gates, AJ Puleo   +5 more
doaj   +1 more source

α‐Helix‐Driven Regulation of Aqueous Circularly Polarized Luminescence in Homopolypeptide Self‐Assembly

Aggregate, EarlyView.
We explore the hierarchical chirality transfer in self‐assembled fluorescent homopolypeptide systems for achieving aqueous circularly polarized luminescence (CPL), and reveal the α‐helix‐dominated CPL regulation mechanism during the self‐assembly process .
Jinhui Jiang, Ziyue Ye, Siwei Zhang, Fulong Ma, Lin Lu, Zijie Qiu, Jianwei Sun, Yu Xiong, Zheng Zhao, Jacky W. Y. Lam, Ben Zhong Tang   +10 more
wiley   +1 more source

FUNDAMENTAL MASS–SPIN–MORPHOLOGY RELATION OF SPIRAL GALAXIES [PDF]

, 2013
This work presents high-precision measurements of the specific baryon angular momentum jb contained in stars, atomic gas, and molecular gas, out to ≳ 10 scale radii, in 16 nearby spiral galaxies of the THINGS sample.
D. Obreschkow, K. Glazebrook
semanticscholar   +1 more source