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The Fingerprint of a Galactic Nucleus

Published online by Cambridge University Press:  09 February 2017

Francisco Nogueras-Lara Open the ORCID record for Francisco Nogueras-Lara [Opens in a new window]  and
Rainer Schödel
Francisco Nogueras-Lara
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC) Glorieta de la Astronomía s/n, 18008, Granada, Spain email: fnoguer@iaa.es
Rainer Schödel
Affiliation:
Instituto de Astrofísica de Andalucía (IAA-CSIC) Glorieta de la Astronomía s/n, 18008, Granada, Spain email: rainer@iaa.es
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Abstract

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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 pc2, a more than ten-fold increase compared to the current state of affairs. Here we present an overview and first results.

Keywords

Galaxy: centerinstrumentation: high angular resolutiontechniques: image processingstars: Population II
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S322: The Multi-Messenger Astrophysics of the Galactic Centre , July 2016 , pp. 257 - 258
Copyright
Copyright © International Astronomical Union 2017 

References

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