Control software for OSIRIS: an infrared integral-field spectrograph for the Keck adaptive optics system

AbstractEPICS is the proposed planet finder for the European Extremely Large Telescope. EPICS is a high contrast imager based on a high performing extreme adaptive optics system, a diffraction suppression module, and two scientific instruments: an Integral Field Spectrograph (IFS) for the near infrared (0.95-1.65 μm), and a differential polarization imager (E-POL). Both these instruments should allow imaging and characterization of planets shining in reflected light, possibly down to Earth-size. A few high interesting science cases are presented.

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OSIRIS: infrared integral field spectrograph for the Keck adaptive optics system

10.1117/12.461775 ◽

2003 ◽

Cited By ~ 23

Author(s):

James E. Larkin ◽

Andreas Quirrenbach ◽

Alfred Krabbe ◽

Ted Aliado ◽

Matthew Barczys ◽

...

Keyword(s):

Adaptive Optics ◽

Integral Field Spectrograph ◽

Adaptive Optics System ◽

Integral Field

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Determination of the residual and static aberrations of an adaptive-optics integral field spectrograph

Adaptive Optics Systems VI ◽

10.1117/12.2312191 ◽

2018 ◽

Author(s):

Alan M. Watson ◽

Salvador Cuevas Cardona ◽

Beatriz S. Sánchez

Keyword(s):

Adaptive Optics ◽

Integral Field Spectrograph ◽

Integral Field

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Gemini IRMOS: preliminary optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph

Ground-based and Airborne Instrumentation for Astronomy VIII ◽

10.1117/12.2561942 ◽

2020 ◽

Author(s):

Shaojie Chen ◽

Denis Brousseau ◽

Olivier Lardière ◽

Suresh Sivanandam ◽

Simon Thibault ◽

...

Keyword(s):

Adaptive Optics ◽

Optical Design ◽

Integral Field Spectrograph ◽

Integral Field

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

Astronomy and Astrophysics ◽

10.1051/0004-6361/202038706 ◽

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.

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