Results 31 to 40 of about 7,683 (149)

Stellar Motion around Spiral Arms: Gaia Mock Data [PDF]

, 2014
We compare the stellar motion around a spiral arm created in two different scenarios, transient/co-rotating spiral arms and density-wave-like spiral arms.
Cropper, M., Grand, R. J. J., Hunt, J. A. S., Kawata, D., Pasetto, S., Siebert, A.   +5 more
core   +2 more sources

Molecules in galaxies. V - CO observations of flocculent and grand-design spirals

The Astrophysical Journal, 1987
New carbon monoxide (1-0) observations of 29 spiral galaxies are presented and combined with previously existing data for 74 galaxies in order to study the dependence of the average CO surface brightness on the spiral-arm class. The total sample shows no significant correlation between the CO surface brightness and the presence or absence of grand ...
Antony A. Stark, Bruce G. Elmegreen, Don Chance   +2 more
openaire   +1 more source

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

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

BVRI Surface Photometry of (S+S) Binary Galaxies. I. The data [PDF]

, 2001
We present multicolour broad band ($BVRI$) photometry for a sample of 33 spiral-spiral (S+S) binary galaxies drawn from the Karachentsev Catalogue of Isolated Pairs of Galaxies (KPG).
Avila-Reese, Avila-Reese, Baugh, Bergvall, Burstein, Cardelli, Chevalier, de Jong, Doroshenko, Dultzin-Hacyan, Elmegreen, Godwin, H. M. Hernández-Toledo, Han, Haynes, Hernández-Toledo, Holmberg, I. Puerari, Jansen, Johansson, Junqueira, Karachentsev, Kauffmann, Keel, Kennicutt, Knapen, Lacey, Larson, Laurikainen, Mayer, Metcalfe, Moore, Márquez, Márquez, Prugniel, Prugniel, Reduzzi, Reshetnikov, Roberts, Sofue, Stocke, Sulentic, Whitford, Xu, Zaritsky   +44 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

The Flocculent Structure of the Inner Milky Way Disk

The Astronomical Journal
Observations of H i published in 1957 by Westerhout and Schmidt were presented as showing a global face-on view of the spiral structure in the Milky Way. Since then, many studies have attempted to improve on the early map, perhaps presupposing our Galaxy
Dana S. Balser, W. B. Burton
doaj   +1 more source

Metallicity Gradient of a Lensed Face-on Spiral Galaxy at Redshift 1.49

, 2011
We present the first metallicity gradient measurement for a grand-design face-on spiral galaxy at z~1.5. This galaxy has been magnified by a factor of 22$\times$ by a massive, X-ray luminous galaxy cluster MACS\,J1149.5+2223 at z=0.544.
Asplund, Bouwens, Chapman, Chiappini, Chiappini, Dickinson, Erb, Fan, Fu, Hopkins, Hou, Jones, Kewley, Kewley, Kewley, Molla, Osterbrock, Rich, Rupke, Rupke, Smith, van Zee   +21 more
core   +3 more sources

Star formation in grand design and flocculent spiral galaxies

The Astrophysical Journal, 1985
An examination is conducted of the colors and neutral hydrogen contents of spiral galaxies which have been classified in the Elmegreen and Elmegreen arm morphology system. Using these data, possible differences between the star formation activity in spiral galaxies with and without classic spiral arms are delineated.
openaire   +1 more source

Spatially resolved properties of the grand-design spiral galaxy UGC 9837: a case for high-redshift 2-D observations [PDF]

Astronomy & Astrophysics, 2012
12 pages, 9 figures, accepted for publication in A& ...
Viironen, K., Sánchez, S. F., Mármol Queraltó, E., Iglesias Páramo, J., Mast, D., Marino, Raffaella Anna, Cristobal Hornillos, D., Gil De Paz, Armando, van de Ven, G., Vílchez, J., Wisotzki, L.   +10 more
openaire   +4 more sources