Results 21 to 30 of about 11,134,879 (212)

Galaxy Zoo:the dependence of morphology and colour on environment [PDF]

, 2008
We analyse the relationships between galaxy morphology, colour, environment and stellar mass using data for over 100,000 objects from Galaxy Zoo, the largest sample of visually classified morphologies yet compiled.
Murray, P, Land, Kate, Slosar, Anze, Vandenberg, J, Torki, Mehri, Szalay, Alexander S., Nichol, Robert C., Andreescu, Dan, Bamford, Steven P., Andreescu, D, Baldry, Ivan K., Thomas, Daniel, Thomas, D, Baldry, IK, Edmondson, Edward M., Vandenberg, Jan, Murray, Phil, Lintott, Chris J., Schawinski, Kevin, Thomas, Daniel Benjamin, Bamford, SP, Schawinski, K, Raddick, MJ, Szalay, AS, Slosar, A, Edmondson, EM, Lintott, CJ, Land, K, Torki, M, Miller, CJ, Nichol, RC, Miller, Christopher J., Raddick, M. Jordan   +32 more
core   +1 more source

An Updated Efficient Galaxy Morphology Classification Model Based on ConvNeXt Encoding with UMAP Dimensionality Reduction

The Astronomical Journal
We present an enhanced unsupervised machine learning (UML) module within our previous USmorph classification framework featuring two components: (1) hierarchical feature extraction via a pretrained ConvNeXt convolutional neural network with transfer ...
Guanwen Fang, Shiwei Zhu, Jun Xu, Shiying Lu, Chichun Zhou, Yao Dai, Zesen Lin, Xu Kong   +7 more
doaj   +1 more source

WorMa: An Undulatory Robot With Center of Mass Regulation via Internal Fluid Redistribution for Amphibious Locomotion

Advanced Robotics Research, EarlyView.
WorMa is an amphibious undulatory robot that uses Center of Mass redistribution as the sole terrain adaptation mechanism. This mechanism is based on internal fluid mass redistribution through a pump‐driven latex balloon system that creates three profiles: head‐biased, balanced, and tail‐biased.
Daniil Filimonov, Nana Obayashi
wiley   +1 more source

Galaxy classification using machine learning

, 2021
A research report submitted to the School of Computer Science and Applied Mathematics, Faculty of Science, University of Witwatersrand, in partial fulfillment of the requirements for the degree of Master of Science, 2021An important area of study is
Variawa, Mohamed Zayyan
core  

Galaxy And Mass Assembly (GAMA) : galaxy close pairs, mergers and the future fate of stellar mass [PDF]

, 2014
ASGR acknowledges STFC and SUPA funding that were used to do this work. GAMA is funded by the STFC (UK), the ARC (Australia), the AAO and the participating institutions.We use a highly complete subset of the Galaxy And Mass Assembly II (GAMA-II) redshift
De Propris, R., De Propis, R., T McNaught-Roberts (16161611), Pimbblet, K. A., A Moffett (7731959), Driver, S. P., M S Owers (16161563), Lara-Lopez, M. A., A M Hopkins (16143587), Lopez-Sanchez, Angel R., B W Holwerda (16219943), Jonathan Loveday (4460899), Owers, M. S., R De Propris (16161587), Obreschkow, D., Holwerda, Benne W., M Cluver (16191152), Baldry, I. K., J Bland-Hawthorn (16111139), Davies, L. J. M., Bauer, A. E., E N Taylor (16143620), Brown, M. J. I., A S G Robotham (16143614), M A Lara-Lopez (16161575), A E Bauer (16161566), Hopkins, A. M., E van Kampen (16112642), Brough, S., Loveday, J., McNaught-Roberts, T., I K Baldry (16072595), Moffett, A., Liske, J., Wilkins, S. M., P Norberg (16143575), Holwerda, B. W., Mahajan, S., L S Kelvin (16143602), K Pimbblet (16191149), Penny, S. J., Robotham, A. S. G., van Kampen, E., M Prescott (10000280), M J Drinkwater (16091732), Bland-Hawthorn, J., N K Agius (16219940), Agius, N. K., Prescott, M., M J I Brown (16143632), Cluver, M., Drinkwater, M. J., S J Penny (16219955), Taylor, E. N., Stephen Wilkins (4461910), Lopez-Sanchez, A. R., D Obreschkow (16219952), S Brough (16143590), S Mahajan (16219949), L J M Davies (16219937), Norberg, P., J Liske (7814738), Kelvin, L. S., Pimbblet, K., S P Driver (16143581), A R López-Sánchez (16219946), Loveday, J, Hopkins AM, Moffett A, Kelvin LS, Agius, NK, Mahajan S, Brough, S, Robotham, ASG, Drinkwater, MJ, Moffett, A, Baldry, IK, McNaught-Roberts T, Hopkins, AM, De Propris, R, Pimbblet, K, van Kampen E, Driver, SP, Driver SP, Pimbblet K, van Kampen, E, Brown, MJI, De Propris R, Bland-Hawthorn, J, Davies LJM, Lopez-Sanchez AR, Wilkins SM, Lara-Lopez, MA, Penny SJ, Lopez-Sanchez, AR, Loveday J, Liske J, Lara-Lopez MA, Liske, J, Taylor EN, Davies, LJM, Norberg, P, Obreschkow D, Prescott M, Cluver, M, Brown MJI, Brough S, Robotham, A. S.G., Taylor, EN, Bland-Hawthorn J, Robotham ASG, Prescott, M, Davies, L. J.M., Drinkwater MJ, Obreschkow, D, Wilkins, SM, Kelvin, LS, Penny, SJ, Holwerda BW, Norberg P, Agius NK, Baldry IK, Bauer, AE, Cluver M, Brown, M. J.I., McNaught-Roberts, T, Owers, MS, Mahajan, S, Bauer AE, Holwerda, BW, Owers MS   +130 more
core   +1 more source

Morphology of Galaxies in JWST Fields: Initial Distribution and Evolution of Galaxy Morphology

The Astrophysical Journal
A recent study from the Horizon Run 5 (HR5) cosmological simulation has predicted that galaxies with $\mathrm{log}\,{M}_{* }/{M}_{\odot }\lesssim 10$ in the cosmic morning (10 ≳ z ≳ 4) dominantly have disk-like morphology in the ΛCDM universe, which is ...
Jeong Hwan Lee, Changbom Park, Ho Seong Hwang, Minseong Kwon   +3 more
doaj   +1 more source

Beyond BPT: A New Multidimensional Diagnostic Diagram for Classifying Power Sources Tested Using the SAMI Galaxy Survey

The Astrophysical Journal, 2023
Current methods of identifying the ionizing source of nebular emission in galaxies are well defined for the era of single-fiber spectroscopy, but still struggle to differentiate the complex and overlapping ionization sources in some galaxies.
Victor D. Johnston, Anne M. Medling, Brent Groves, Lisa J. Kewley, Luca Cortese, Scott Croom, Ángel R. López-Sánchez, Henry Zovaro, Joss Bland-Hawthorn, Julia Bryant, Jon Lawrence, Matt Owers, Samuel Richards, Jesse van de Sande   +13 more
doaj   +1 more source

Advanced Flexible Robotic Systems for the Early Diagnosis and Treatment of Cancer and Cardiovascular Diseases

Advanced Robotics Research, EarlyView.
Flexible surgical robots are advancing minimally invasive interventions for cardiovascular diseases and cancer by enabling precise navigation through complex, submillimeter anatomical pathways. This review highlights recent innovations in actuation, bio‐integrated sensing, AI‐assisted control, and friction‐reduction technologies, discusses current ...
Hermione Truong, Chi Cong Nguyen, Hannah Thuy Truong, Kefan Zhu, Adrienne Ji, James Davies, Emanuele Nicotra, Bibhu Sharma, Jingjing Wan, Patrick Pruscino, Shing Wai Wong, Hoang‐Phuong Phan, Phuoc Thien Phan, Nigel H. Lovell, Thanh Nho Do   +14 more
wiley   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Morphology Classification for Galaxies in the Kilo Degree Survey Using a Label-efficient Self-supervised Learning Framework

The Astrophysical Journal Supplement Series
Galaxy morphology classification is fundamental to understanding galaxy formation and evolution. The advent of large-scale sky surveys has produced an unprecedented volume of galaxy images, making traditional manual classification impractical.
Xu Huang, Rui Li, Liang Gao, Liqing Chen, Hui Li, Huijun Mu, Hao Su, Fucheng Zhong, Zhenping Yi, Xiaoyue Cao, Ran Li, Haicheng Feng, Nicola N. Napolitano, Yue Dong, Yida Deng, Sihan Li, Kang Jiao   +16 more
doaj   +1 more source