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相关论文: A multi-domain approach to asteroid families ident…

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Recent studies suggest that chemical abundances hold the key to disentangling halo substructure, providing a more reliable tracer than dynamics alone. We aim to probe the Milky Way stellar halo using high-dimensional chemical abundances…

星系天体物理 · 物理学 2026-04-08 Milan Quandt-Rodriguez , Sara Lucatello , Lorenzo Spina , Mario Pasquato , Marco Canducci

We present a novel method for extracting moving objects from TESS data using machine learning. Our approach uses two stacked 3D U-Nets with skip connections, which we call a W-Net, to filter background and identify pixels containing moving…

地球与行星天体物理 · 物理学 2026-05-13 Brian P. Powell , Jorge Martinez-Palomera , Amy Tuson , Christina Hedges , Jessie Dotson , Jordan Caraballo-Vega

Multi-epoch Spitzer Space Telescope 24 micron data is utilized from the MIPSGAL and Taurus Legacy surveys to detect asteroids based on their relative motion. These infrared detections are matched to known asteroids and rotationally averaged…

We use A-type stars selected from Sloan Digital Sky Survey data release 9 photometry to measure the outer slope of the Milky Way stellar halo density profile beyond 50 kpc. A likelihood-based analysis is employed that models the ugr…

星系天体物理 · 物理学 2015-06-19 Alis J. Deason , Vasily Belokurov , Sergey E. Koposov , Connie M. Rockosi

We use a modified version of the halo-based group finder developed by Yang et al. to select galaxy groups from the Sloan Digital Sky Survey (SDSS DR4). In the first step, a combination of two methods is used to identify the centers of…

天体物理学 · 物理学 2009-07-28 Xiaohu Yang , H. J. Mo , Frank C. van den Bosch , Anna Pasquali , Cheng Li , Marco Barden

Basaltic asteroids (V-types) are believed to be fragments of large differentiated bodies. The majority of them are found in the inner part of the asteroid belt, and are current or past members of the Vesta family. Recently, some V-type…

地球与行星天体物理 · 物理学 2017-04-12 J. Licandro , M. Popescu , J. de Leon , D. Morate

Context. Binary asteroids are present in all populations of the Solar System, from near-Earth to trans-Neptunian regions. As is true for the small Solar System bodies (SSSBs), binary asteroids generally offer valuable insights into the…

地球与行星天体物理 · 物理学 2025-03-18 Ziyu Liu , Daniel Hestroffer , Josselin Desmars , Pedro David

We explore the correlation between an asteroid's taxonomy and photometric phase curve using the H, G12 photometric phase function, with the shape of the phase function described by the single parameter G12. We explore the usability of G12…

地球与行星天体物理 · 物理学 2015-06-04 D. A. Oszkiewicz , E. Bowell , L. H. Wasserman , K. Muinonen , A. Penttilä , T. Pieniluoma , D. E. Trilling , C. A. Thomas

The ISOPHOT Serendipity Survey (ISOSS) covered approximately 15 % of the sky at a wavelength of 170 micron while the ISO satellite was slewing from one target to the next. By chance ISOSS slews went over many solar system objects (SSOs). We…

天体物理学 · 物理学 2009-11-07 T. G. Mueller , S. Hotzel , M. Stickel

We use extensive gravity-sensitive DDO 51 photometry over 5100 square degrees, combined with SDSS broadband photometry, to select a catalog of $\sim 4,000$ giant stars covering a large fraction of the high Galactic latitude sky and reaching…

星系天体物理 · 物理学 2016-12-14 Colin T. Slater , David L. Nidever , Jeffrey A. Munn , Eric F. Bell , Steven R. Majewski

We introduce a new method for the identification of galaxy systems in redshift surveys based on the halo model. This method is a modified version of the K-means identification algorithm developed by Yang et al (2005). We have calibrated and…

宇宙学与河外天体物理 · 物理学 2012-08-20 Mariano Javier de León Domínguez Romero , Diego García Lambas , Hernán Muriel

Through matches with the Sloan Digital Sky Survey (SDSS) catalogue we identify the location of various families of astronomical objects in WISE colour space. We identify reliable indicators that separate Galactic/local from extragalactic…

星系天体物理 · 物理学 2014-07-03 Robert Nikutta , Nicholas Hunt-Walker , Maia Nenkova , Zeljko Ivezic , Moshe Elitzur

By considering all asteroid linear polarization data available in the literature, it is possible to obtain updated phase - polarization curves for several tens of objects. In a separate paper (Cellino et al., 2015a, MNRAS, 451, 3473) we…

地球与行星天体物理 · 物理学 2015-11-06 A. Cellino , S. Bagnulo , R. Gil-Hutton , P. Tanga , M. Canada-Assandri , E. F. Tedesco

The organization of the orbits of most minor bodies in the Solar system seems to follow random patterns, the result of billions of years of chaotic dynamical evolution. Much as heterogeneous orbital behaviour is ubiquitous, dynamically…

地球与行星天体物理 · 物理学 2017-12-08 C. de la Fuente Marcos , R. de la Fuente Marcos

In the past two decades an increasing interest in discovering Near Earth Objects has been noted in the astronomical community. Dedicated surveys have been operated for data acquisition and processing, resulting in the present discovery of…

天体物理仪器与方法 · 物理学 2019-01-10 T. Stefanut , V. Bacu , C. Nandra , D. Balasz , D. Gorgan , O. Vaduvescu

We have examined the resolved stellar populations at large galactocentric distances along the minor axis (from 10 kpc up to between 40 and 75 kpc), with limited major axis coverage, of six nearby highly-inclined Milky Way-mass disc galaxies…

We present preliminary diameters and albedos for 13511 MBAs that were observed during the 3-Band Cryo phase of the WISE survey (after the outer cryogen tank was exhausted) and as part of the NEOWISE Post-Cryo Survey (after the inner cryogen…

地球与行星天体物理 · 物理学 2015-06-11 Joseph R. Masiero , A. K. Mainzer , T. Grav , J. M. Bauer , R. M. Cutri , C. Nugent , M. S. Cabrera

Dark matter halos are typically defined as spheres that enclose some overdensity, but these sharp, somewhat arbitrary boundaries introduce non-physical artifacts such as backsplash halos, pseudo-evolution, and an incomplete accounting of…

宇宙学与河外天体物理 · 物理学 2026-01-21 Ze'ev Vladimir , Calvin Osinga , Benedikt Diemer , Edgar M. Salazar , Eduardo Rozo

We provide a taxonomic and compositional characterization of Multiple Asteroid Systems (MASs) located in the main belt (MB) using visible and near-infrared (0.45-2.5 um) spectral data of 42 MB MASs. The mineralogical analysis is applied to…

地球与行星天体物理 · 物理学 2015-06-22 Sean S. Lindsay , Franck Marchis , Joshua P. Emery , J. Emilio Enriquez , Marcelo Assafin

Wide-field cosmological surveys provide hundreds of thousands of spectroscopically confirmed galaxy groups and clusters, valuable for tracing baryonic matter distribution. However, controlling systematics in identifying host dark matter…