Results 11 to 20 of about 20,250 (258)
Precision Vs. Accuracy in Star Catalogs [PDF]
Symposium - International Astronomical Union, 1995 As better precision is achieved and more sophisticated reduction methods are created previously invisible biases surface. This has been especially true in astrometric Schmidt plate work. The problem of their amelioration is not fully solved and precision per se is meaningless in the presence of poor accuracy of comparable amplitude.
L. G. Taff, J. E. Morrison, R. L. Smart
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A Novel Inertial-Aided Star Pattern Matching Method for Distributed Multiple FoVs
International Journal of Aerospace Engineering, 2020 An aerospace vehicle in high-speed flight involves distributed multiple fields of view (FoVs) of a star sensor, and the maneuvering of the vehicle requires inertial-aided star pattern matching.
Rong Wang +3 more
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A Catalog of Nearby Accelerating Star Candidates in Gaia DR3
The Astronomical Journal, 2023 We describe a new catalog of accelerating star candidates with Gaia G ≤ 17.5 mag and distances d ≤ 100 pc. Designated as the Gaia Nearby Accelerating Star Catalog (GNASC), it contains 29,684 members identified using a supervised machine-learning ...
Marc L. Whiting +3 more
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A Catalog Of Reference Stars For New Reductions Of The Astrographic Catalog Plates [PDF]
Symposium - International Astronomical Union, 1988 A high density reference star catalog is being compiled at the U. S. Naval Observatory for the purpose of making new reductions of the Astrographic Catalog. The catalog will be a replacement to the SAO catalog and will be derived from the large photographic catalogs and the modern meridian circle catalogs.
Thomas E. Corbin, Sean E. Urban
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A Star Catalog for the Open Cluster NGC 188 [PDF]
Publications of the Astronomical Society of the Pacific, 2004 We present new BVRI broad-band photometry for the old open cluster NGC188 based upon analysis of 299 CCD images either obtained by us, donated by colleagues, or retrieved from public archives. We compare our results on a star-by-star basis with data from eleven previous photometric investigations of the cluster.
Stetson, Peter B. +2 more
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The Astrophysical Journal Supplement Series, 2023 This work presents and releases a catalog of new photometrically derived physical properties for the ∼10 ^5 most well-measured galaxies in the COSMOS field on the sky.
Vadim Rusakov +2 more
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The Astrophysical Journal, 2023 We present a sample of 30 massive (log( M _* / M _⊙ ) > 11) z = 3–5 quiescent galaxies selected from the Spitzer-HETDEX Exploratory Large Area (SHELA) Survey and observed at 1.1 mm with Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 ...
Katherine Chworowsky +13 more
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Determination of the density of scattered spherical data for use in star catalog uniformity [PDF]
فصلنامه علوم و فناوری فضایی, 2021 In this paper, a new algorithm for determining the density of scattered data at the surface of the sphere is presented and then the proposed algorithm along with Geodesic Weighted K-Means clustering and Deluany triangulation are used to make uniform star
Farshad Somayehee +2 more
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The Astrophysical Journal Supplement Series, 2023 The recent UNCOVER survey with the James Webb Space Telescope (JWST) exploits the nearby cluster A2744 to create the deepest view of our Universe to date by leveraging strong gravitational lensing.
Bingjie Wang +43 more
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Guide Star Selection for the Three-FOV Daytime Star Sensor
Sensors, 2019 To realize the application of the star sensor in the all-day carrier platform, a three-field-of-view (three-FOV) star sensor in short-wave infrared (SWIR) band is considered.
Liang Wu +4 more
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