Results 41 to 50 of about 8,556 (157)

Galaxy Zoo: star formation versus spiral arm number [PDF]

, 2017
Spiral arms are common features in low-redshift disc galaxies, and are prominent sites of star formation and dust obscuration. However, spiral structure can take many forms: from galaxies displaying two strong ‘grand design’ arms to those with many ...
R. Hart, S. Bamford, K. Casteels, S. Kruk, C. Lintott, K. Masters   +5 more
semanticscholar   +1 more source

Insights into the structure and kinematics of a Milky Way-like galaxy

Astronomy & Astrophysics
Context. Understanding how the large-scale kinematics of the Milky Way (MW) shape the formation and evolution of the interstellar medium remains challenging from an observational perspective, and numerical models that can reproduce the observed structure
Durán-Camacho E., Duarte-Cabral A.
doaj   +1 more source

Detection of Molecular Clouds in the Interarm of the Flocculent Galaxy NGC 5055

, 2003
We present high-resolution (~ 4") 12CO (J = 1 - 0) mapping observations with high - velocity resolution (~ 2.6 km s^{-1}) toward the disk of flocculent galaxy NGC 5055, using the Nobeyama Millimeter Array in order to study the physical properties of the ...
Hasegawa, Takashi, Kuno, Nario, Nakanishi, Kouichiro, Shioya, Yasuhiro, Tosaki, Tomoka   +4 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

Clues to the formation of spiral structure in M51 from the ages and locations of star clusters [PDF]

, 2017
We determine the spatial distributions of star clusters at different ages in the grand-design spiral galaxy M51 using a new catalog based on multi-band images taken with the Hubble Space Telescope (HST). These distributions, when compared with the spiral
Calzetti, Daniela, Chandar, Rupali, Chien, L-H, Dinino, Daiana, Dobbs, Clare, Kennicutt, Robert C, Querejeta, Miguel, Regan, Michael, Schinnerer, Eva, van der Wel, Sharon Meidt, Whitmore, Bradley C   +10 more
core   +1 more source

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

A panchromatic spatially resolved analysis of nearby galaxies – II. The main sequence – gas relation at sub-kpc scale in grand-design spirals [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT In this work, we analyse the connection between gas availability and the position of a region with respect to the spatially resolved main-sequence (MS) relation. Following the procedure presented in Enia et al. (2020), for a sample of five face-on, grand design spiral galaxies located on the MS we obtain estimates of stellar ...
M Romano, P Popesso, M Negrello, C Mancini, A Franceschini, P Cassata, S Bianchi, I Baronchelli, S Tacchella, A Renzini, L Rodríguez-Muñoz, V Casasola, E Corbelli, A Enia, G Rodighiero, L Morselli   +15 more
openaire   +6 more sources

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 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

Analyzing the cosmic architecture in the vicinity of Grand-design and Flocculent spiral galaxies with Local Geometric Index

, 2023
We explore the environment of 351 grand-design and 541 flocculent spiral galaxies recently identified employing convolutional neural networks from the $17^{th}$ data release of Sloan Digital Sky Survey. We introduce a novel estimator called the Local Geometric Index to quantify the morphology of the local environment of these 892 spirals.
Sarkar, Suman, Narayanan, Ganesh, Banerjee, Arunima   +2 more
openaire   +2 more sources