Results 161 to 170 of about 12,684 (325)

Grand Design Spiral Arms in the Compact, Embedded Protoplanetary Disk of Haro 6-13

The Astrophysical Journal
Millimeter continuum spiral arms have so far only been detected in a handful of protoplanetary disks, and thus we have a limited understanding of the circumstances in which they can form.
Jane Huang, Masataka Aizawa, Jaehan Bae, Sean M. Andrews, Myriam Benisty, Edwin A. Bergin, Stefano Facchini, Christian Ginski, Michael Küffmeier   +8 more
doaj   +1 more source

Kinematic groups across the MW disc: Insights from models and from the RAVE catalogue

EPJ Web of Conferences, 2012
With the advent of the Gaia data, the unprecedented kinematic census of great part of the Milky Way disc will allow us to characterise the local kinematic groups and new groups in different disc neighbourhoods. First, we show here that the models predict
Romero-Gómez M., Figueras F., Antoja T., Helmi A.   +3 more
doaj   +1 more source

Strong‐Magnetic Flexible Composites for Magnetically Responsive Soft Robots

Advanced Robotics Research, EarlyView.
This perspective provides an overview of the performance mechanisms, preparation methods, and applications of strong magnetic flexible composite materials in soft actuators (such as gripping, movement, and sensing), and further explores current opportunities and challenges.
Wenwen Li, Shuai Liu, Xinyi Wang, Xinglong Gong, Shouhu Xuan   +4 more
wiley   +1 more source

The Galactic inner spiral arms revealed by the

Context. The spiral structure of the Milky Way has traditionally been mapped using stellar density, kinematics, and gas distribution. However, chemical abundances – especially in the inner Galaxy – remain a relatively under-explored tracer, offering ...
G. Tautvaišienè, L. Magrini, E. Spitoni, A. Vasini, G. Cescutti, C. Viscasillas Vázquez, S. Randich, G. G. Sacco   +7 more
core   +1 more source

The dynamics of stars around spiral arms [PDF]

Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a long-lived wave structure with a constant pattern speed in order to avoid the winding dilemma.
Grand, RJJ, Kawata, D, Cropper, M
core   +1 more source

Magnetic and optical spiral arms in the galaxy NGC 6946 [PDF]

, 2000
The spiral pattern in the nearby spiral galaxy NGC 6946 has been studied using the wavelet transformation technique, applied to galaxy images in polarized and total non-thermal radio emission at lambda lambda3.5 and 6.2 cm, in broadband red light, in the
Kamphuis, J, Beck, R, Shukurov, A, Ehle, M, Frick, P, Sokoloff, D   +5 more
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Galaxy Zoo and SPARCFIRE: constraints on spiral arm formation mechanisms from spiral arm number and pitch angles [PDF]

, 2017
In this paper, we study the morphological properties of spiral galaxies, including measurements of spiral arm number and pitch angle. Using Galaxy Zoo 2, a stellar mass-complete sample of 6222 SDSS spiral galaxies is selected.
Masters, Karen L., Lintott, Chris J, Karen L. Masters, Steven P. Bamford, Hayes, WB, William C. Keel, Masters, Karen L, Ross E. Hart, Keel, WC, Bamford, Steven P, Hayes, Wayne B., Hart, RE, Chris J. Lintott, Bamford, Steven P., Smethurst, RJ, Lintott, Christopher, Wayne B. Hayes, Carolin N. Cardamone, Sandor J. Kruk, Kruk, Sandor J., Cardamone, Carolin N, Brooke D. Simmons, Lintott, Chris J., Bamford, SP, Masters, KL, Kruk, Sandor J, Simmons, BD, Keel, William C., Smethurst, Rebecca J, Simmons, Brooke D., Cardamone, CN, Kruk, SJ, Lintott, CJ, Keel, William C, Rebecca J. Smethurst, Smethurst, Rebecca J., Hayes, Wayne B, Cardamone, Carolin N., Simmons, Brooke D, Hart, Ross E., Hart, Ross E   +40 more
core   +1 more source

Arm classifications for spiral galaxies

The Astrophysical Journal, 1987
On presente la classification de 762 galaxies.
Debra Meloy Elmegreen, Bruce G. Elmegreen   +1 more
openaire   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source