The Fingerprint of a Galactic Nucleus

DOI: 
10.1017/S1743921316011959
Publication date: 
01/01/2017
Main author: 
Nogueras-Lara, Francisco
IAA authors: 
Nogueras-Lara, Francisco;Schödel, Rainer
Authors: 
Nogueras-Lara, Francisco;Schödel, Rainer
Journal: 
IAU Symposium
Publication type: 
Proceedings
Volume: 
322
Pages: 
257-258
Abstract: 
Because of the unique observational challenges -extreme crowding and extinction- any existing large-scale near-infrared (NIR) imaging data on the Galactic Center (GC) are limited by either one, or a combination, of the following: saturation, lack of sensitivity, too low angular resolution, or lack of multi-wavelength coverage. To overcome this situation, we are currently carrying out a sensitive, 0.2'' resolution JHK imaging survey of the Galactic Centre with HAWK-I/VLT. Thanks to holographic imaging, we achieve a similar resolution than with HST/WFC, but can cover also the long NIR, beyond 2 micrometers, which is essential to deal with extinction. Our survey is supported by an ESO Large Programme and will provide photometrically accurate (few percent uncertainty for H 〈 18 stars), high-angular resolution, NIR data for an area of several 1000 pc<SUP>2</SUP>, a more than ten-fold increase compared to the current state of affairs. Here we present an overview and first results.
Database: 
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/2017IAUS..322..257N/abstract
ADS Bibcode: 
2017IAUS..322..257N
Keywords: 
Galaxy: center;instrumentation: high angular resolution;techniques: image processing;stars: Population II