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Using Gaia as an astrometric tool for deep ground-based surveys

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Resource type
Conference Paper
Authors/contributors
Title
Using Gaia as an astrometric tool for deep ground-based surveys
Abstract
Gaia DR1 positions are used to astrometrically calibrate three epochs’ worth of Subaru SuprimeCam images in the fields of globular cluster NGC 2419 and the Sextans dwarf spheroidal galaxy. Distortion-correction “maps” are constructed from a combination of offset dithers and reference to Gaia DR1. These are used to derive absolute proper motions in the field of NGC 2419. Notably, we identify the photometrically-detected Monoceros structure in the foreground of NGC 2419 as a kinematically-cold population of stars, distinct from Galactic-field stars. This project demonstrates the feasibility of combining Gaia with deep, ground-based surveys, thus extending high-quality astrometry to magnitudes beyond the limits of Gaia.
Proceedings Title
Proceedings of the International Astronomical Union
Publisher
Cambridge University Press
Date
2017/04
Volume
12
Pages
85-87
DOI
10.1017/S1743921317005841
Citation Key
casetti-dinescuUsingGaiaAstrometric2017
URL
https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/using-gaia-as-an-astrometric-tool-for-deep-groundbased-surveys/767C2AFB5D7BE0AABC0F34ED5BFF9DD2
Accessed
12/26/19, 3:16 PM
Language
English
Library Catalog
Cambridge Core
Extra
0 citations (Crossref) [2023-10-31] Citation Key Alias: lens.org/110-283-973-036-247
Citation
Casetti-Dinescu, D. I., Girard, T. M., & Schriefer, M. (2017). Using Gaia as an astrometric tool for deep ground-based surveys. Proceedings of the International Astronomical Union, 12, 85–87. https://doi.org/10.1017/S1743921317005841
Link to this record
https://libweb.southernct.edu/authors/bibliography/U9T5Z5Z7