CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 9148 > Article
Open Access Paper
21 July 2014 Near-infrared astrometry of star clusters with different flavors of adaptive optics and HST
Jessica R. Lu, Benoit Neichel, Jay Anderson, Evan Sinukoff, Matthew W. Hosek Jr., Andrea M. Ghez, Francois Rigaut
Author Affiliations +
Proceedings Volume 9148, Adaptive Optics Systems IV; 91480B (2014) https://doi.org/10.1117/12.2057241
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada
Abstract
High-precision infrared astrometry is a powerful tool for the study of resolved stellar populations throughout our Galaxy. We highlight two particular science cases that require precise infrared astrometry: (1) measuring the initial mass function in massive young clusters throughout the MilkyWay and (2) finding isolated black holes that photometrically and astrometrically lens background bulge stars. Using astrometric results from these science cases, we perform a comparative analysis of the infrared astrometric capabilities from the Keck single-conjugate adaptive optics (AO) system, the Gemini multi-conjugate AO system, and the Hubble WFC3IR instrument. For the most crowded fields and a small region of interest, we show that Keck's single-conjugate AO system and the well-characterized NIRC2 instrument produce the highest astrometric precision at ~150 μas. However, for targets that cover a wider field of view, both the Gemini South AO Imager (GSAOI) and HST WFC3IR should be considered carefully. GSAOI currently delivers lower astrometric precision than HST WFC3IR for a given integration time; but, programs that require more frequent astrometric measurements over longer periods of time may benefit from the higher availability and possibly longer lifetime of GSAOI.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Jessica R. Lu, Benoit Neichel, Jay Anderson, Evan Sinukoff, Matthew W. Hosek Jr., Andrea M. Ghez, and Francois Rigaut "Near-infrared astrometry of star clusters with different flavors of adaptive optics and HST", Proc. SPIE 9148, Adaptive Optics Systems IV, 91480B (21 July 2014); https://doi.org/10.1117/12.2057241
PROCEEDINGS
 13 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Lens.org Logo
CITATIONS
Cited by 5 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Adaptive optics
Stars
Gemini Observatory
Electroluminescent displays
Point spread functions
Infrared radiation
Infrared imaging
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top