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Title: A road map for the generation of a near-infrared guide star catalog for thirty meter telescope observations
Authors: Subramanian, S
Subramaniam, S
Sivarani, T
Simard, Luc
Anupama, G. C
Gillies, Gim
Ramaprakash, A. N
Reddy, B. E
Keywords: Stars--Near-Infrared;Magnitudes--Adaptive Optics
Issue Date: Sep-2016
Publisher: Indian Academy of Sciences
Citation: Journal of Astrophysics and Astronomy, Vol. 37, No. 3, 24
Abstract: The near-infrared instruments in the upcoming Thirty Meter Telescope (TMT) will be assisted by a multi conjugate Adaptive Optics (AO) system. For the efficient operation of the AO system, during observations, a near-infrared guide star catalog which goes as faint as 22 mag in JVega band is essential and such a catalog does not exist. A methodology, based on stellar atmospheric models, to compute the expected near-infrared magnitudes of stellar sources from their optical magnitudes is developed. The method is applied and validated in JHKs bands for a magnitude range of JVega 16--22 mag. The methodology is also applied and validated using the reference catalog of PAN STARRS. We verified that the properties of the final PAN STARRS optical catalog will satisfy the requirements of TMT IRGSC and will be one of the potential sources for the generation of the final catalog. In a broader context, this methodology is applicable for the generation of a guide star catalog for any existing/upcoming near-infrared telescopes.
Description: Open Access
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Appears in Collections:IIAP Publications

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