Prof Gavin Dalton: Publications

4MOST: Project overview and information for the First Call for Proposals

ArXiv 1903.02464 (2019)

Authors:

RS de Jong, O Agertz, A Agudo Berbel, J Aird, DA Alexander, A Amarsi, F Anders, R Andrae, B Ansarinejad, W Ansorge, P Antilogus, H Anwand-Heerwart, A Arentsen, A Arnadottir, M Asplund, M Auger, N Azais, D Baade, G Baker, S Baker, E Balbinot, IK Baldry, M Banerji, S Barden, P Barklem, E Barthélémy-Mazot, C Battistini, S Bauer, CPM Bell, O Bellido-Tirado, S Bellstedt, V Belokurov, T Bensby, M Bergemann, JM Bestenlehner, R Bielby, M Bilicki, C Blake, J Bland-Hawthorn, C Boeche, W Boland, T Boller, S Bongard, A Bongiorno, P Bonifacio, D Boudon, D Brooks, MJI Brown, R Brown, M Brüggen, J Brynnel, J Brzeski, T Buchert, P Buschkamp, E Caffau, P Caillier, J Carrick, L Casagrande, S Case, A Casey, I Cesarini, G Cescutti, D Chapuis, C Chiappini, M Childress, N Christlieb, R Church, M-RL Cioni, M Cluver, M Colless, T Collett, J Comparat, A Cooper, W Couch, F Courbin, S Croom, D Croton, E Daguisé, G Dalton, LJM Davies, T Davis, P de Laverny, A Deason, F Dionies, K Disseau, P Doel, D Döscher, SP Driver, T Dwelly, D Eckert, A Edge, B Edvardsson, D El Youssoufi, A Elhaddad, H Enke, G Erfanianfar, T Farrell, T Fechner, C Feiz, S Feltzing, I Ferreras, D Feuerstein, D Feuillet, A Finoguenov, D Ford, S Fotopoulou, M Fouesneau, C Frenk, S Frey, W Gaessler, S Geier, N Gentile Fusillo, O Gerhard, T Giannantonio, D Giannone, B Gibson, P Gillingham, C González-Fernández, E Gonzalez-Solares, S Gottloeber, A Gould, EK Grebel, A Gueguen, G Guiglion, M Haehnelt, T Hahn, CJ Hansen, H Hartman, K Hauptner, K Hawkins, D Haynes, R Haynes, U Heiter, A Helmi, C Hernandez Aguayo, P Hewett, S Hinton, D Hobbs, S Hoenig, D Hofman, I Hook, J Hopgood, A Hopkins, A Hourihane, L Howes, C Howlett, T Huet, M Irwin, O Iwert, P Jablonka, T Jahn, K Jahnke, A Jarno, S Jin, P Jofre, D Johl, D Jones, H Jönsson, C Jordan, I Karovicova, A Khalatyan, A Kelz, R Kennicutt, D King, F Kitaura, J Klar, U Klauser, J Kneib, A Koch, S Koposov, G Kordopatis, A Korn, J Kosmalski, R Kotak, M Kovalev, K Kreckel, Y Kripak, M Krumpe, K Kuijken, A Kunder, I Kushniruk, MI Lam, G Lamer, F Laurent, J Lawrence, M Lehmitz, B Lemasle, J Lewis, B Li, C Lidman, K Lind, J Liske, J-L Lizon, J Loveday, H-G Ludwig, RM McDermid, K Maguire, V Mainieri, S Mali, H Mandel, K Mandel, L Mannering, S Martell, D Martinez Delgado, G Matijevic, H McGregor, R McMahon, P McMillan, O Mena, A Merloni, MJ Meyer, C Michel, G Micheva, J-E Migniau, I Minchev, G Monari, R Muller, D Murphy, D Muthukrishna, K Nandra, R Navarro, M Ness, V Nichani, R Nichol, H Nicklas, F Niederhofer, P Norberg, D Obreschkow, S Oliver, M Owers, N Pai, S Pankratow, D Parkinson, I Parry, J Paschke, R Paterson, A Pecontal, D Phillips, A Pillepich, L Pinard, J Pirard, N Piskunov, V Plank, D Plüschke, E Pons, P Popesso, C Power, J Pragt, A Pramskiy, D Pryer, M Quattri, AB de Andrade Queiroz, A Quirrenbach, S Rahurkar, A Raichoor, S Ramstedt, A Rau, A Recio-Blanco, R Reiss, F Renaud, Y Revaz, P Rhode, J Richard, AD Richter, H-W Rix, ASG Robotham, R Roelfsema, M Romaniello, D Rosario, F Rothmaier, B Roukema, G Ruchti, G Rupprecht, J Rybizki, N Ryde, A Saar, E Sadler, M Sahlén, M Salvato, B Sassolas, W Saunders, A Saviauk, L Sbordone, T Schmidt, O Schnurr, R-D Scholz, A Schwope, W Seifert, T Shanks, A Sheinis, T Sivov, Á Skúladóttir, S Smartt, S Smedley, G Smith, R Smith, J Sorce, L Spitler, E Starkenburg, M Steinmetz, I Stilz, J Storm, M Sullivan, W Sutherland, E Swann, A Tamone, EN Taylor, J Teillon, E Tempel, R ter Horst, W-F Thi, E Tolstoy, S Trager, G Traven, P-E Tremblay, L Tresse, M Valentini, R van de Weygaert, M van den Ancker, J Veljanoski, S Venkatesan, L Wagner, K Wagner, CJ Walcher, L Waller, N Walton, L Wang, R Winkler, L Wisotzki, CC Worley, G Worseck, M Xiang, W Xu, D Yong, C Zhao, J Zheng, F Zscheyge, D Zucker

Abstract:

We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metre-class Visible and Infrared Survey Telescope for Astronomy (VISTA) at Paranal. Its key specifications are: a large field of view (FoV) of 4.2 square degrees and a high multiplex capability, with 1624 fibres feeding two low-resolution spectrographs ($R = \lambda/\Delta\lambda \sim 6500$), and 812 fibres transferring light to the high-resolution spectrograph ($R \sim 20\,000$). After a description of the instrument and its expected performance, a short overview is given of its operational scheme and planned 4MOST Consortium science; these aspects are covered in more detail in other articles in this edition of The Messenger. Finally, the processes, schedules, and policies concerning the selection of ESO Community Surveys are presented, commencing with a singular opportunity to submit Letters of Intent for Public Surveys during the first five years of 4MOST operations.

WAS: The archive for the WEAVE spectrograph

Proceedings of SPIE - The International Society for Optical Engineering 10015 (2018)

Authors:

J Guerra, A Martin, E Molinari, M Lodi, Gb Dalton, Sc Trager, Dc Abrams, P Bonifacio, Jal Aguerri, A Vallenari, Eec Licea, Kf Middleton

Construction progress of WEAVE: the next generation wide-field spectroscopy facility for the William Herschel Telescope

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII Society of Photo-optical Instrumentation Engineers 10702 (2018)

Authors:

Gavin Dalton, S Trager, DC Abrams, Ian Lewis, Matthew Brock, Ellen Schallig, Et al.

Abstract:

We present an update on the overall construction progress of the WEAVE next-generation spectroscopy facility for the William Herschel Telescope (WHT), now that all the major fabrication contracts are in place. We also present a summary of the current planning behind the 5-year initial phase of survey operations, and some detailed end-to-end science simulations that have been effected to evaluate the final on-sky performance after data processing. WEAVE will provide optical ground-based follow up of ground-based (LOFAR) and space-based (Gaia) surveys. WEAVE is a multi-object and multi-IFU facility utilizing a new 2-degree prime focus field of view at the WHT, with a buffered pick-and-place positioner system hosting 1000 multi-object (MOS) fibres, 20 integral field units, or a single large IFU for each observation. The fibres are fed to a single (dual-beam) spectrograph, with total of 16k spectral pixels, located within the WHT GHRIL enclosure on the telescope Nasmyth platform, 91̽��ing observations at R~5000 over the full 370-1000nm wavelength range in a single exposure, or a high resolution mode with limited coverage in each arm at R~20000. The project has experienced some delays in procurement and now has first light expected for the middle of 2019.

First lab results of the WEAVE fibre positioner system

Ground-based and Airborne Instrumentation for Astronomy VII Society of Photo-optical Instrumentation Engineers (2018)

Authors:

Ellen JJ Schallig, Ian J Lewis, Gavin Dalton, M Brock, D Terrett, DC Abrams, K Middleton, G Bishop, JAL Aguerri, P Bonifacio, EC Licea, SC Trager, A Vallenari

Abstract:

WEAVE is the new wide-field spectroscopy facility for the prime focus of the William Herschel Telescope on La Palma in the Canary Islands, Spain. It is a multi-object “pick-and-place” fibre-fed spectrograph with a 960 fibre multiplex behind a new dedicated 2° prime focus corrector. We provide an update on the fibre positioner's technical progress. The hardware has been fully assembled and integrated with its control system for testing. We have made initial calibrations and are starting to move test fibres. In the near future we will dismantle for final modifications and surface anodising, before final reassembly and full fibre installation.

MOSAIC: the ELT Multi-Object Spectrograph

Proceedings of SPIE Society of Photo-optical Instrumentation Engineers (2018)

Authors:

P Jagourel, E Fitzsimons, F Hammer, F de Frondat Laadim, M Puech, CJ Evans, I Guinouard, F Chemla, M Frotin, Y Yang, P Parr-Burman, T Morris, M Dubbeldam, M Close, K Middleton, G Rousset, E Gendron, A Kelz, A Janssen, J Pragt, R Navarro, M Larrieu, K El Hadi, K Dohlen

Abstract:

Following a successful Phase A study, we introduce the delivered conceptual design of the MOSAIC1 multi-object spectrograph for the ESO Extremely Large Telescope (ELT). MOSAIC will provide R~5000 spectroscopy over the full 460-1800 nm range, with three additional high-resolution bands (R~15000) targeting features of particular interest. MOSAIC will combine three operational modes, enabling integrated-light observations of up to 200 sources on the sky (high-multiplex mode) or spectroscopy of 10 spatially-extended fields via deployable integral-field units: MOAO6 assisted high-definition (HDM) and Visible IFUs (VIFU). We will summarise key features of the sub-systems of the design, e.g. the smart tiled focal-plane for target selection and the multi-object adaptive optics used to correct for atmospheric turbulence, and present the next steps toward the construction phase.

91̽��