Extremely Large Telescope

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Herschel-ATLAS: far-infrared properties of radio-selected galaxies

(2010)

Authors:

MJ Hardcastle, JS Virdee, MJ Jarvis, DG Bonfield, L Dunne, S Rawlings, JA Stevens, NM Christopher, I Heywood, T Mauch, D Rigopoulou, A Verma, IK Baldry, SP Bamford, S Buttiglione, A Cava, DL Clements, A Cooray, SM Croom, A Dariush, G De Zotti, S Eales, J Fritz, DT Hill, D Hughes, R Hopwood, E Ibar, RJ Ivison, DH Jones, J Loveday, SJ Maddox, MJ Michalowski, M Negrello, P Norberg, M Pohlen, M Prescott, EE Rigby, ASG Robotham, G Rodighiero, D Scott, R Sharp, DJB Smith, P Temi, E van Kampen
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Fibre positioning revisited: The use of an off-the-shelf assembly robot for OPTIMOS-EVE

Proceedings of SPIE - The International Society for Optical Engineering 7739 (2010)

Authors:

GB Dalton, MS Whalley, O Mounissamy, EC Sawyer, IAJ Tosh, DL Terrett, IJ Lewis

Abstract:

The OPTIMOS-EVE instrument proposed for the E-ELT aims to use the maximum field of view available to the E-ELT in the limit of natural or ground-layer-corrected seeing for high multiplex fibre-fed multi-object spectroscopy in the visible and near-IR. At the bare nasmyth focus of the telescope, this field corresponds to a focal plane 2.3m in diameter, with a plate-scale of ∼3mm/arcsec. The required positioning accuracy that is implied by seeing limited performance at this plate-scale brings the system into the range of performances of commercial off-the-shelf robots that are commonly used in industrial manufacturing processes. The cost-benefits that may be realized through such an approach must be offset against the robot performance, and the ease with which a useful software system can be implemented. We therefore investigate whether the use of such a system is indeed feasible for OPTIMOS-EVE, and the possibilities of extending this approach to other instruments that are currently in the planning stage. © 2010 SPIE.
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GYES, a multifibre spectrograph for the CFHT

(2010)

Authors:

P Bonifacio, S Mignot, J-L Dournaux, P François, E Caffau, F Royer, C Babusiaux, F Arenou, C Balkowski, O Bienaymé, D Briot, R Carlberg, M Cohen, GB Dalton, B Famaey, G Fasola, Y Frémat, A Gómez, M Haywood, V Hill, J-M Huet, D Katz, D Horville, R Kudritzky, R Lallement, Ph Laporte, P de Laverny, B Lemasle, IJ Lewis, C Martayan, R Monier, D Mourard, N Nardetto, A Recio Blanco, N Robichon, AC Robin, M Rodrigues, C Soubiran, C Turon, K Venn, Y Viala
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Fibre Positioning Revisited: The use an off-the-shelf assembly robot for OPTIMOS-EVE

(2010)

Authors:

Gavin Dalton, Martin Whalley, Oudayraj Mounissamy, Eric Sawyer, Ian Tosh, David Terrett, Ian Lewis
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The Gemini Nici Planet-Finding Campaign: Discovery of a close substellar companion to the young debris disk star PZ TEL

Astrophysical Journal Letters 720:1 PART 2 (2010)

Authors:

BA Biller, MC Liu, Z Wahhaj, EL Nielsen, LM Close, TJ Dupuy, TL Hayward, A Burrows, M Chun, C Ftaclas, F Clarke, M Hartung, J Males, IN Reid, EL Shkolnik, A Skemer, M Tecza, N Thatte, SHP Alencar, P Artymowicz, A Boss, E De Gouveia Dal Pino, J Gregorio-Hetem, S Ida, MJ Kuchner, D Lin, D Toomey

Abstract:

We report the discovery of a tight substellar companion to the young solar analog PZ Tel, a member of the β Pic moving group observed with high-contrast adaptive optics imaging as part of the Gemini Near-Infrared Coronagraphic Imager Planet-Finding Campaign. The companion was detected at a projected separation of 16.4 ± 1.0 AU (0. ′33 ± 0. ′01) in 2009 April. Second-epoch observations in 2010 May demonstrate that the companion is physically associated and shows significant orbital motion. Monte Carlo modeling constrains the orbit of PZ Tel B to eccentricities >0.6. The near-IR colors of PZ Tel B indicate a spectral type of M7 ± 2 and thus this object will be a new benchmark companion for studies of ultracool, low-gravity photospheres. Adopting an age of 12+8-4 Myr for the system, we estimate a mass of 36 ± 6 MJup based on the Lyon/DUSTY evolutionary models. PZ Tel B is one of the few young substellar companions directly imaged at orbital separations similar to those of giant planets in our own solar system. Additionally, the primary star PZ Tel A shows a 70 μm emission excess, evidence for a significant quantity of circumstellar dust that has not been disrupted by the orbitalmotion of the companion. © 2010. The American Astronomical Society. All rights reserved.
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