Prof. Niranjan Thatte: Publications

Oxford SWIFT integral field spectrograph and multiwavelength observations of the Eagle galaxy at z= 0.77

Monthly Notices of the Royal Astronomical Society (2011)

Authors:

SA Kassin, L Fogarty, T Goodsall, FJ Clarke, RWC Houghton, G Salter, N Thatte, M Tecza, RL Davies, BJ Weiner, CNA Willmer, S Salim, MC Cooper, JA Newman, K Bundy, CJ Conselice, AM Koekemoer, L Lin, LA Moustakas, T Wang

SWIFT observations of the Arp 147 ring galaxy system

Monthly Notices of the Royal Astronomical Society (2011)

Authors:

L Fogarty, N Thatte, M Tecza, F Clarke, T Goodsall, R Houghton, G Salter, RL Davies, SA Kassin

The Gemini NICI Planet-Finding Campaign: Discovery of a substellar L dwarf companion to the nearby young M dwarf CD-35 2722

Astrophysical Journal Letters 729:2 (2011)

Authors:

Z Wahhaj, MC Liu, BA Biller, F Clarke, EL Nielsen, LM Close, T Hayward, EE Mamajek, M Cushing, T Dupuy

An image slicer-based integral-field spectrograph for EPICS

Proceedings of SPIE the International Society for Optical Engineering 7735:PART 1 (2010)

Authors:

M Tecza, N Thatte, G Salter, F Clarke

Abstract:

We present the results of a design study for an integral field spectrograph as the "back-end" instrument for spectroscopy of exoplanets carried out in the context of the EPICS Phase A study. EPICS is the planet finder imager and spectrograph for the E-ELT. In our study we investigated the feasibility of an image slicer based integral field spectrograph and developed an optical design for the image slicer and the necessary pre-optics, as well as the spectrograph optics. We present a detailed analysis of the optical performance of the design. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Coronagraphic capability for HARMONI at the E-ELT

Proceedings of SPIE the International Society for Optical Engineering 7735:PART 1 (2010)

Authors:

S Gladysz, NA Thatte, F Clarke, M Tecza, GS Salter

Abstract:

HARMONI is a proposed visible and near-infrared integral field spectrograph for the European Extremely Large Telescope. We are exploring the merits of adding a coronagraphic capability to HARMONI, specifically targeted at enabling observations of faint, nearby companions (primarily extra-solar planets) that require high contrast. Although HARMONI is not fed by extreme adaptive optics, we show that substantial contrasts can be achieved by post-processing of the hyperspectral data cube using spectral deconvolution. We make predictions of achievable contrast as a function of coronagraph design, based on realistic models of the telescope's aberrations. © 2010 Copyright SPIE - The International Society for Optical Engineering.

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