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We present new proper motions from the 10 m Keck telescopes for a puzzling population of massive, young stars located within 3.5" (0.14 pc) of the supermassive black hole at the Galactic Center. Our proper motion measurements have…

Astrophysics · Physics 2011-02-11 J. R. Lu , A. M. Ghez , S. D. Hornstein , M. R. Morris , E. E. Becklin , K. Matthews

We present a new public archive of light-motion curves in Sloan Digital Sky Survey (SDSS) Stripe 82, covering 99 deg in right ascension from RA = 20.7 h to 3.3 h and spanning 2.52 deg in declination from Dec = -1.26 to 1.26 deg, for a total…

We present a first large-scale kinematic map of $\sim$50,000 young OB stars ($T_{\rm eff} \geq 10,000$ K), based on BOSS spectroscopy from the Milky Way Mapper OB program in the ongoing Sloan Digital Sky Survey V (SDSS-V). Using…

Using multi-epoch observations of the Stripe 82 region done by Sloan Digital Sky Survey, we measure precise statistical proper motions of the stars in the Sagittarius stellar stream. The multi-band photometry and SDSS radial velocities…

Astrophysics of Galaxies · Physics 2013-03-28 Sergey E. Koposov , Vasily Belokurov , N. Wyn Evans

The properties of galaxies in the local universe have been shown to depend upon their environment. Future large scale photometric surveys such as DES and Euclid will be vital to gain insight into the evolution of galaxy properties and the…

Astrophysics of Galaxies · Physics 2015-08-06 James Etherington , Daniel Thomas

We present a photometric catalog of 8,735,004 proper motion selected low-mass stars (KML-spectral types) within the Sloan Digital Sky Survey (SDSS) footprint, from the combined SDSS Data Release 10 (DR10), Two-Micron All-Sky Survey (2MASS)…

Solar and Stellar Astrophysics · Physics 2016-02-17 Christopher A. Theissen , Andrew A. West , Saurav Dhital

Five new objects with proper motions between 1.0 arcsec/yr and 2.6 arcsec/yr have been discovered via a new RECONS search for high proper motion stars utilizing the SuperCOSMOS Sky Survey. The first portion of the search, discussed here, is…

Astrophysics · Physics 2009-11-10 N. C. Hambly , T. J. Henry , J. Subasavage , M. Brown , W. -C. Jao

Many of the satellites of galactic-mass systems such as the Miky Way, Andromeda and Centaurus A show evidence of coherent motions to a larger extent than most of the systems predicted by the standard cosmological model. It is an open…

Astrophysics of Galaxies · Physics 2024-01-22 Qing Gu , Qi Guo , Marius Cautun , Shi Shao , Wenxiang Pei , Wenting Wang , Liang Gao , Jie Wang

We have derived a new photographic photometry and proper motions for 20000 stars with completeness to V = 18 in the direction of galactic center at the intermediate latitude (l = 3 deg,b = 47 deg; alpha(1950)=15h 18m, delta(1950) = +02deg…

Astrophysics · Physics 2007-05-23 D. K. Ojha , O. Bienayme , A. C. Robin , V. Mohan

Traditional photometric redshift methods use only color information about the objects in question to estimate their redshifts. This paper introduces a new method utilizing colors, luminosity, surface brightness, and radial light profile to…

Astrophysics · Physics 2008-11-26 James J. Wray , James E. Gunn

We study the photometric properties of stars in the data archive of the Sloan Digital Sky Survey (SDSS), the prime aim being to understand the photometric calibration over the entire data set. It is confirmed that the photometric…

Solar and Stellar Astrophysics · Physics 2015-05-19 Masataka Fukugita , Naoki Yasuda , Mamoru Doi , James E. Gunn , Donald G. York

We discuss optical and infrared photometric properties of stars matched in the Two Micron All Sky Survey (2MASS) and the Sloan Digital Sky Survey (SDSS) commissioning data for 50 deg2 of sky. About 98% (63,000) of objects listed in the…

Astrophysics · Physics 2008-11-26 K. Finlator , Z. Ivezic , M. Strauss , J. Knapp , R. Lupton , J. Gunn , C. Rockosi

We have used GALEX and SDSS observations to extract 7 band photometric magnitudes for over 80,000 objects in the vicinity of the North Galactic Pole. Although these had been identified as stars by the SDSS pipeline, we found through fitting…

Astrophysics of Galaxies · Physics 2013-11-13 K. Preethi , S. B. Gudennavar , S. G. Bubbly , Jayant Murthy , Noah Brosch

The Sloan Digital Sky Survey (SDSS) and Two Micron All Sky Survey (2MASS) are rich resources for studying stellar astrophysics and the structure and formation history of the Galaxy. As new surveys and instruments adopt similar filter sets,…

We combine Gaia DR1, PS1, SDSS and 2MASS astrometry to measure proper motions for 350 million sources across three-fourths of the sky down to a magnitude of $m_r\sim20$\,. Using positions of galaxies from PS1, we build a common reference…

We present $V$-band photometry of the 20,000 brightest asteroids using data from the All-Sky Automated Survey for Supernovae (ASAS-SN) between 2012 and 2018. We were able to apply the convex inversion method to more than 5,000 asteroids…

Earth and Planetary Astrophysics · Physics 2021-10-13 J. Hanuš , O. Pejcha , B. J. Shappee , C. S. Kochanek , K. Z. Stanek , T. W. -S. Holoien

We present a new tool for the photometric estimate of stellar masses in distant galaxies. The observed SEDs are fitted by combining single stellar populations, with different SFRs and amounts of dust extinction. This approach gives us the…

We have obtained structural parameters of about 340,000 galaxies from the Kilo Degree Survey (KiDS) in 153 square degrees of data release 1, 2 and 3. We have performed a seeing convolved 2D single S\'ersic fit to the galaxy images in the 4…

We developed two different point spread function (PSF) analysis techniques for discovering wide separation binary asteroids in wide field surveys. We then applied these techniques to images of main belt asteroids in the 4 to 60 km size…

Earth and Planetary Astrophysics · Physics 2022-06-22 James Ou , Christoph Baranec , Schelte J. Bus