Showing 181 - 200 results of 241 for search '"Stellar classification', query time: 0.48s Refine Results
  1. 181

    POSYDON: A General-purpose Population Synthesis Code with Detailed Binary-evolution Simulations by Tassos Fragos, Jeff J. Andrews, Simone S. Bavera, Christopher P. L. Berry, Scott Coughlin, Aaron Dotter, Prabin Giri, Vicky Kalogera, Aggelos Katsaggelos, Konstantinos Kovlakas, Shamal Lalvani, Devina Misra, Philipp M. Srivastava, Ying Qin, Kyle A. Rocha, Jaime Román-Garza, Juan Gabriel Serra, Petter Stahle, Meng Sun, Xu Teng, Goce Trajcevski, Nam Hai Tran, Zepei Xing, Emmanouil Zapartas, Michael Zevin

    Published 2023-01-01
    “…This paper describes the detailed methodology and implementation of POSYDON , including the assumed physics of stellar and binary evolution, the extensive grids of detailed single- and binary-star models, the postprocessing, classification, and interpolation methods we developed for use with the grids, and the treatment of evolutionary phases that are not based on precalculated grids. …”
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    Article
  2. 182

    Galaxy Zoo: The fundamentally different co-evolution of supermassive black holes and their early- and late-type host galaxies by Schawinski, K, Urry, C, Virani, S, Coppi, P, Bamford, S, Treister, E, Lintott, C, Sarzi, M, Keel, W, Kaviraj, S, Cardamone, C, Masters, K, Ross, N, Andreescu, D, Murray, P, Nichol, R, Raddick, M, Slosar, A, Szalay, A, Thomas, D, Vandenberg, J

    Published 2010
    “…We use data from the Sloan Digital Sky Survey and visual classifications of morphology from the Galaxy Zoo project to study black hole growth in the nearby Universe (z < 0.05) and to break down the AGN host galaxy population by color, stellar mass and morphology. …”
    Journal article
  3. 183

    Retrieval of the physical parameters of galaxies from WEAVE-StePS-like data using machine learning by Angthopo, J, Granett, B, La Barbera, F, Longhetti, M, Iovino, A, Fossati, M, Spiniello, C, Dalton, G, Jin, S

    Published 2024
    “…Finally, we find that the classification of galaxies as members of the green valley is successful across the different redshifts and S/Ns. …”
    Journal article
  4. 184

    Extraction of water bodies from high-resolution remote sensing imagery based on a deep semantic segmentation network by Dechao Sun, Guang Gao, Lijun Huang, Yunpeng Liu, Dongquan Liu

    Published 2024-06-01
    “…Experimental evidence substantiates that WaterDeep outperforms its existing deep learning counterparts, achieving a stellar overall accuracy of 99.284%, FWIoU of 95.58%, precision of 97.562%, recall of 95.486%, and F1 score of 96.513%. …”
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    Article
  5. 185

    Distinguishing Tidal Disruption Events from Impostors by Zabludoff, Ann, Arcavi, Iair, La Massa, Stephanie, Perets, Hagai B, Trakhtenbrot, Benny, Zauderer, B. A, Auchettl, Katie, Dai, Jane L, French, K. D, Hung, Tiara, Kara, Erin, Lodato, Giuseppe, Maksym, W. P, Qin, Yujing, Ramirez-Ruiz, Enrico, Roth, Nathaniel

    Published 2021
    “…This chapter both reviews those events that are unusual relative to other TDEs, including the possibility of TDEs in pre-existing AGN, and summarises those characteristics thought to best distinguish TDEs from continuously accreting AGN, strongly flaring AGN, SNe, and Gamma-Ray Bursts (GRBs), as well as other potential impostors like stellar collisions, “micro-TDEs,” and circumbinary accretion flows. …”
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    Article
  6. 186

    The 13th data release of the Sloan Digital Sky Survey: First spectroscopic data from the SDSS-IV Survey mapping nearby galaxies at Apache Point Observatory by Albareti, FD, Prieto, C, Almeida, A, Cappellari, M, Schoenrich, R, Sloan Digital Sky Survey

    Published 2017
    “…DR13 includes new reductions of the SDSS-III BOSS data, improving the spectrophotometric calibration and redshift classification, and new reductions of the SDSS-III APOGEE-1 data, improving stellar parameters for dwarf stars and cooler stars. …”
    Journal article
  7. 187

    CatNorth: An Improved Gaia DR3 Quasar Candidate Catalog with Pan-STARRS1 and CatWISE by Yuming Fu, Xue-Bing Wu, Yifan Li, Yuxuan Pang, Ravi Joshi, Shuo Zhang, Qiyue Wang, Jing Yang, FanLam Ng, Xingjian Liu, Yu Qiu, Rui Zhu, Huimei Wang, Christian Wolf, Yanxia Zhang, Zhi-Ying Huo, Y. L. Ai, Qinchun Ma, Xiaotong Feng, R. J. Bouwens

    Published 2024-01-01
    “…An ensemble classification model is obtained by averaging two XGBoost classifiers trained with different master stellar samples. …”
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    Article
  8. 188

    GAMA/H-ATLAS: Linking the properties of submm detected and undetected early-type galaxies - I. z ≤ 0.06 sample by Agius, N, Sansom, A, Popescu, C, Andrae, E, Baes, M, Baldry, I, Bourne, N, Brough, S, Clark, C, Conselice, C, Cooray, A, Dariush, A, De zotti, G, Driver, S, Dunne, L, Eales, SA, Foster, C, Gomez, H, Häußler, B, Hopkins, A, Hopwood, R, Ivison, R, Kelvin, L, Lara-lópez, M, Liske, J

    Published 2013
    “…The dust masses calculated from these fits, normalized by stellar mass, are shown to increase with decreasing stellar mass and bluer colours. …”
    Journal article
  9. 189

    The K2 Bright Star Survey. I. Methodology and Data Release by Pope, BJS, White, TR, Farr, WM, Yu, J, Greklek-McKeon, M, Huber, D, Aerts, C, Aigrain, S, Bedding, TR, Boyajian, T, Creevey, OL, Hogg, DW

    Published 2019
    “…Applying this to the bright stars across the K2 Campaigns reveals stellar variability ubiquitously, including effects of stellar pulsation, rotation, and binarity. …”
    Journal article
  10. 190

    The K2 Bright Star Survey. I. Methodology and data release by Pope, BJS, White, TR, Farr, WM, Yu, J, Greklek-McKeon, M, Huber, D, Aerts, C, Aigrain, S, Bedding, TR, Boyajian, T, Creevey, OL, Hogg, DW

    Published 2019
    “…Applying this to the bright stars across the K2 Campaigns reveals stellar variability ubiquitously, including effects of stellar pulsation, rotation, and binarity. …”
    Journal article
  11. 191

    A Comprehensive Catalog of Emission-line Nebulae, Star Clusters, and Supergiants in M31 from the LAMOST Spectroscopic Survey by Pinjian Chen, Bingqiu Chen, Xuan Fang, Haibo Yuan, Baisong Zhang, Xiangwei Zhang, Jiarui Sun, Xiaowei Liu

    Published 2025-01-01
    “…Spectroscopic observations of various tracers in nearby galaxies, such as Andromeda (M31), play a crucial role in identifying and classifying individual stellar populations and nebular objects, thereby enhancing our understanding of galactic composition, environment, and dynamics, as well as stellar evolution. …”
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  12. 192

    Discovery of a Millisecond Pulsar Associated with Terzan 6 by Shi-Jie Gao, Yi-Xuan Shao, Pei Wang, Ping Zhou, Xiang-Dong Li, Lei Zhang, Joseph W. Kania, Duncan R. Lorimer, Di Li

    Published 2024-01-01
    “…PSR J1750–3116A is likely an isolated MSP, potentially formed through dynamical interactions, considering the core-collapsed classification and the exceptionally high stellar encounter rate of Terzan 6. …”
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    Article
  13. 193

    Exploring the high abundance discrepancy in the planetary nebula IC 4663 by M. Mohery, A. Ali, Aya A. Khames, S. Snaid, A. Mindil

    Published 2023-12-01
    “…These findings suggest the possibility that the central star of IC 4663 may be part of a binary system with a sub-stellar companion, potentially engaged in a common envelope interaction. …”
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    Article
  14. 194

    An Analysis Through to Congruence Between Real and Self-Perceived Body Mass Index in Nursing Students by Marta López-Bueno, Silvia Navarro-Prado, Ángel Fernández-Aparicio, Miriam Mohatar-Barba, María López-Olivares, Carmen Enrique-Mirón

    Published 2024-10-01
    “…Self-perceived body weight was assessed using Stunkard and Stellar’s scale. Descriptive statistics and multinomial logistic regression identified significant predictors of weight distortion. …”
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    Article
  15. 195

    A Catalog of Candidate Double and Lensed Quasars from Gaia and WISE Data by Valeri V. Makarov, Nathan J. Secrest

    Published 2022-01-01
    “…For the second part of the catalog, additional filters on measured parallax and near-neighbor statistics are applied to diminish the propagation of the remaining stellar contaminants. The estimated rate of the positives (double or multiple sources) is 98%, and the estimated rate of dual (physically related) quasars is greater than 54%. …”
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    Article
  16. 196

    THE AUTOMATIC MEASURING MACHINES AND GROUND-BASED ASTROMETRY by T. P. Sergeeva

    Published 2017-11-01
    “…Investigations of the structure and kinematics of the stellar components of our Galaxy has been revolutionized in the last decade by the advent of automated plate measuring machines. …”
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    Article
  17. 197
  18. 198

    Galaxy Zoo: An independent look at the evolution of the bar fraction over the last eight billion years from HST-COSMOS by Melvin, T, Masters, K, Lintott, C, Nichol, R, Simmons, B, Bamford, S, Casteels, K, Cheung, E, Edmondson, E, Fortson, L, Schawinski, K, Skibba, R, Smith, A, Willett, K

    Published 2014
    “…We measure the redshift evolution of the bar fraction in a sample of 2380 visually selected disc galaxies found in Cosmic Evolution Survey (COSMOS) Hubble Space Telescope (HST) images. The visual classifications used to identify both the disc sample and to indicate the presence of stellar bars were provided by citizen scientists via the Galaxy Zoo: Hubble (GZH) project. …”
    Journal article
  19. 199

    Galaxy Zoo: Bulgeless Galaxies With Growing Black Holes by Simmons, B, Lintott, C, Schawinski, K, Moran, E, Han, A, Kaviraj, S, Masters, K, Urry, C, Willett, K, Bamford, S, Nichol, R

    Published 2012
    “…However, if the mean Eddington ratio of the systems with measured black hole masses (L/L_Edd = 0.065) is typical, 10 of 13 sources are consistent with the correlation between black hole mass and total stellar mass. That pure disk galaxies and their central black holes may be consistent with a relation derived from elliptical and bulge-dominated galaxies with very different formation histories implies the details of stellar galaxy evolution and dynamics may not be fundamental to the co-evolution of galaxies and black holes.…”
    Journal article
  20. 200

    Slowly Rotating Peculiar Star BD00°1659 as a Benchmark for Stratification Studies in Ap/Bp Stars by Anna Romanovskaya, Tatiana Ryabchikova, Yury Pakhomov, Ilya Potravnov, Tatyana Sitnova

    Published 2024-09-01
    “…This narrow-lined star shows the typical high Si abundance and Si <span style="font-variant: small-caps;">ii</span>– <span style="font-variant: small-caps;">iii</span> anomaly, making it an ideal prototype for investigating the vertical distribution of Si and Fe in the stellar atmosphere. The derived abundances, ranging from helium to lanthanides, confirm the star’s classification as a silicon Bp spectral type. …”
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