DAVINCI: a high-performance imager and integral field spectrograph for the W. M. Keck Observatory's next-generation adaptive optics facility

2010 ◽  
Author(s):  
Sean M. Adkins ◽  
James Bell ◽  
Albert Conrad ◽  
Mike Fitzgerald ◽  
Renate Kupke ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
High Performance ◽  
Next Generation ◽  
Integral Field Spectrograph ◽  
Integral Field

scholarly journals Direct Detection of Nearby Habitable Zone Planets Using Slicer Based Integral Field Spectrographs and EPICS on the E-ELT

2012 ◽  
Vol 8 (S293) ◽  
pp. 442-444
Author(s):  
Graeme S. Salter ◽  
Niranjan A. Thatte ◽  
Matthias Tecza ◽  
Fraser Clarke ◽  
Markus E. Kasper
Keyword(s):  
Adaptive Optics ◽  
High Performance ◽  
Direct Detection ◽  
Speckle Noise ◽  
Correct Choice ◽  
Habitable Zone ◽  
Attractive Option ◽  
Nearby Stars ◽  
Integral Field Spectrograph ◽  
Integral Field

AbstractEarly design studies for the future Exo-Planet Imaging Camera and Specrotgraph (EPICS) on the European Extremely Large Telescope (E-ELT) show the ability to probe the region of super-Earths in the habitable zone of stars within 5pc (including Gilese 581d). However, these planets will be lost to us if the correct choice of integral field spectrograph (IFS) technology is not selected for such an instrument the ability to fit and remove the speckle noise that remains is crucial to reaching these contrasts.We conclusively demonstrate, though the use of an experimental setup producing an artificial speckle, that slicer based IFSs and post-processing using spectral deconvolution can achieve speckle rejection factors exceeding 103. Contrary to popular belief, we do not find any evidence that this choice of IFS technology limits the achievable contrast. Coupled with extreme adaptive optics and high performance coronographs, a slicer based integral field spectrograph could achieve contrasts exceeding 109, enabling these super-Earths to be detected in the habitable zone of nearby stars, making it an attractive option for the next generation of instruments being designed for the direct detection of extra solar planets.

scholarly journals CS Cha B: A disc-obscured M-type star mimicking a polarised planetary companion

2020 ◽  
Vol 640 ◽  
pp. L12
Author(s):  
S. Y. Haffert ◽  
R. G. van Holstein ◽  
C. Ginski ◽  
J. Brinchmann ◽  
I. A. G. Snellen ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Near Infrared ◽  
Type Star ◽  
Atmospheric Models ◽  
Planetary Mass ◽  
Medium Resolution ◽  
Low Mass ◽  
Integral Field Spectrograph ◽  
Integral Field

Context. Direct imaging provides a steady flow of newly discovered giant planets and brown dwarf companions. These multi-object systems can provide information about the formation of low-mass companions in wide orbits and/or help us to speculate about possible migration scenarios. Accurate classification of companions is crucial for testing formation pathways. Aims. In this work we further characterise the recently discovered candidate for a planetary-mass companion CS Cha b and determine if it is still accreting. Methods. MUSE is a four-laser-adaptive-optics-assisted medium-resolution integral-field spectrograph in the optical part of the spectrum. We observed the CS Cha system to obtain the first spectrum of CS Cha b. The companion is characterised by modelling both the spectrum from 6300 Å to 9300 Å and the photometry using archival data from the visible to the near-infrared (NIR). Results. We find evidence of accretion and outflow signatures in Hα and OI emission. The atmospheric models with the highest likelihood indicate an effective temperature of 3450 ± 50 K with a log g of 3.6 ± 0.5 dex. Based on evolutionary models, we find that the majority of the object is obscured. We determine the mass of the faint companion with several methods to be between 0.07 M⊙ and 0.71 M⊙ with an accretion rate of Ṁ = 4 × 10−11±0.4 M⊙ yr−1. Conclusions. Our results show that CS Cha B is most likely a mid-M-type star that is obscured by a highly inclined disc, which has led to its previous classification using broadband NIR photometry as a planetary-mass companion. This shows that it is important and necessary to observe over a broad spectral range to constrain the nature of faint companions.

scholarly journals First light with ALES: A 2-5 micron adaptive optics Integral Field Spectrograph for the LBT

2015 ◽  
Author(s):  
Andrew J. Skemer ◽  
Philip Hinz ◽  
Manny Montoya ◽  
Michael F. Skrutskie ◽  
Jarron Leisenring ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Integral Field Spectrograph ◽  
Integral Field

SWIFT: An adaptive optics assisted I/z band integral field spectrograph

2006 ◽  
Vol 49 (10-12) ◽  
pp. 647-654 ◽  
Author(s):  
Matthias Tecza ◽  
Niranjan Thatte ◽  
Fraser Clarke ◽  
Timothy Goodsall ◽  
Myrto Symeonidis
Keyword(s):  
Adaptive Optics ◽  
Integral Field Spectrograph ◽  
Integral Field

The adaptive optics beam steering mirror for the GMT Integral-Field Spectrograph, GMTIFS

2014 ◽  
Author(s):  
R. Sharp ◽  
R. Boz ◽  
J. Hart ◽  
G. Bloxham ◽  
D. Bundy ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Beam Steering ◽  
Integral Field Spectrograph ◽  
Integral Field

GMTIFS: the adaptive optics beam steering mirror for the GMT integral-field spectrograph

2016 ◽  
Author(s):  
J. Davies ◽  
G. Bloxham ◽  
R. Boz ◽  
D. Bundy ◽  
B. Espeland ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Beam Steering ◽  
Integral Field Spectrograph ◽  
Integral Field

scholarly journals Potential science for the OASIS integral field spectrograph with laser guide star adaptive optics

2006 ◽  
Vol 49 (10-12) ◽  
pp. 488-494 ◽  
Author(s):  
Simon L. Morris ◽  
Joris Gerssen ◽  
Mark Swinbank ◽  
Richard Wilman
Keyword(s):  
Adaptive Optics ◽  
Laser Guide Star ◽  
Integral Field Spectrograph ◽  
Guide Star ◽  
Laser Guide ◽  
Integral Field
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