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Search and identification of transient and variable radio sources using MeerKAT observations: a case study on the MAXI J1820+070 field

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 517:2 (2022) 2894-2911

Authors:

A Rowlinson, J Meijn, J Bright, AJ van der Horst, S Chastain, S Fijma, R Fender, I Heywood, RAMJ Wijers, PA Woudt, A Andersson, GR Sivakoff, E Tremou, LN Driessen

First light for GRAVITY Wide: Large separation fringe tracking for the Very Large Telescope Interferometer

Astronomy and Astrophysics 665 (2022)

Authors:

R Abuter, F Allouche, A Amorim, C Bailet, M Bauböck, JP Berger, P Berio, A Bigioli, O Boebion, ML Bolzer, H Bonnet, G Bourdarot, P Bourget, W Brandner, Y Clénet, B Courtney-Barrer, Y Dallilar, R Davies, D Defrère, A Delboulbé, F Delplancke, R Dembet, PT De Zeeuw, A Drescher, A Eckart, C Douard, F Eisenhauer, M Fabricius, H Feuchtgruber, G Finger, NM Förster Schreiber, E Garcia, P Garcia, F Gao, E Gendron, R Genzel, JP Gil, S Gillessen, T Gomes, F Gonté, C Gouvret, P Guajardo, S Guieu, M Hartl, X Haubois, F Hauå Mann, G Heiåel, T Henning, S Hippler, S Hönig, M Horrobin, N Hubin, E Jacqmart, L Jochum, L Jocou, A Kaufer, P Kervella, H Korhonen, L Kreidberg, S Lacour, S Lagarde, O Lai, V Lapeyrère, R Laugier, JB Le Bouquin, J Leftley, P Léna, D Lutz, F Mang, A Marcotto, D Maurel, A Mérand, F Millour, N More, H Nowacki, M Nowak, S Oberti, T Ott, L Pallanca, L Pasquini, T Paumard, K Perraut, G Perrin, R Petrov, O Pfuhl, N Pourré, S Rabien, C Rau, S Robbe-Dubois, S Rochat, M Salman, M Schöller, J Schubert, N Schuhler, J Shangguan, T Shimizu, S Scheithauer, A Sevin, F Soulez, A Spang

Abstract:

GRAVITY+ is the upgrade for GRAVITY and the Very Large Telescope Interferometer (VLTI) with wide-separation fringe tracking, new adaptive optics, and laser guide stars on all four 8 m Unit Telescopes (UTs) to enable ever-fainter, all-sky, high-contrast, milliarcsecond interferometry. Here we present the design and first results of the first phase of GRAVITY+, known as GRAVITY Wide. GRAVITY Wide combines the dual-beam capabilities of the VLTI and the GRAVITY instrument to increase the maximum separation between the science target and the reference star from 2 arcseconds with the 8 m UTs up to several 10 arcseconds, limited only by the Eartha's turbulent atmosphere. This increases the sky-coverage of GRAVITY by two orders of magnitude, opening up milliarcsecond resolution observations of faint objects and, in particular, the extragalactic sky. The first observations in 2019-2022 include the first infrared interferometry of two redshift z ~ 2 quasars, interferometric imaging of the binary system HD 105913A, and repeat observations of multiple star systems in the Orion Trapezium Cluster. We find the coherence loss between the science object and fringe-tracking reference star well described by the turbulence of the Eartha's atmosphere. We confirm that the larger apertures of the UTs result in higher visibilities for a given separation due to the broader overlap of the projected pupils on the sky and provide predictions for visibility loss as a function of separation to be used for future planning.

ANDES, the high resolution spectrograph for the ELT: science case, baseline design and path to construction

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY IX 12184 (2022) ARTN 1218424

Authors:

A Marconi, M Abreu, V Adibekyan, V Alberti, S Albrecht, J Alcaniz, M Aliverti, C Allende Prieto, JD Alvarado Gomez, PJ Amado, M Amate, MI Andersen, E Artigau, C Baker, V Baldini, A Balestra, SA Barnes, F Baron, SCC Barros, SM Bauer, M Beaulieu, O Bellido-Tirado, B Benneke, T Bensby, EA Bergin, K Biazzo, A Bik, JL Birkby, N Blind, I Boisse, E Bolmont, M Bonaglia, X Bonfils, F Borsa, A Brandeker, W Brandner, CH Broeg, M Brogi, D Brousseau, A Brucalassi, J Brynnel, LA Buchhave, DF Buscher, A Cabral, G Calderone, R Calvo-Ortega, F Cantalloube, BL Canto Martins, L Carbonaro, G Chauvin, B Chazelas, A-L Cheffot, YS Cheng, A Chiavassa, L Christensen, R Cirami, NJ Cook, RJ Cooke, I Coretti, S Covino, N Cowan, G Cresci, S Cristiani, V Cunha Parro, G Cupani, V D'Odorico, I de Castro Leao, A De Cia, JR De Medeiros, F Debras, M Debus, O Demangeon, M Dessauges-Zavadsky, P Di Marcantonio, F Dionies, R Doyon, J Dunn, D Ehrenreich, JP Faria, C Feruglio, M Fisher, A Fontana, M Fumagalli, T Fusco, J Fynbo, O Gabella, W Gaessler, E Gallo, X Gao, L Genolet, M Genoni, P Giacobbe, E Giro, RS Goncalves, OA Gonzalez, JI Gonzalez Hernandez, F Gracia Temich, MG Haehnelt, C Haniff, A Hatzes, R Helled, HJ Hoeijmakers, P Huke, AS Jaervinen, SP Jaervinen, A Kaminski, AJ Korn, D Kouach, G Kowzan, L Kreidberg, M Landoni, A Lanotte, A Lavail, J Li, J Liske, C Lovis, S Lucatello, D Lunney, MJ MacIntosh, N Madhusudhan, L Magrini, R Maiolino, L Malo, AWS Man, T Marquart, EL Marques, CJAP Martins, AM Martins, P Maslowski, E Mason, CA Mason, RA McCracken, P Mergo, G Micela, T Mitchell, P Molliere, MA Monteiro, D Montgomery, C Mordasini, J Morin, A Mucciarelli, MT Murphy, M N'Diaye, B Neichel, AT Niedzielski, E Niemczura, L Nortmann, P Noterdaeme, NJ Nunes, L Oggioni, E Oliva, H Onel, L Origlia, G Ostlin, E Palle, P Papaderos, G Pariani, J Penate Castro, F Pepe, L Perreault Levasseur, P Petit, L Pino, J Piqueras, A Pollo, K Poppenhaeger, A Quirrenbach, E Rauscher, R Rebolo, EMA Redaelli, S Reffert, DT Reid, A Reiners, P Richter, M Riva, S Rivoire, C Rodriguez-Lopez, IU Roederer, D Romano, S Rousseau, J Rowe, S Salvadori, N Sanna, NC Santos, P Santos Diaz, J Sanz-Forcada, M Sarajlic, J-F Sauvage, S Schaefer, RP Schiavon, TM Schmidt, C Selmi, S Sivanandam, M Sordet, R Sordo, F Sortino, D Sosnowska, SG Sousa, E Stempels, KG Strassmeier, A Suarez Mascareno, A Sulich, X Sun, NR Tanvir, F Tenegi-Sangines, S Thibault, SJ Thompson, A Tozzi, M Turbet, P Vallee, R Varas, KA Venn, J-P Veran, A Verma, M Viel, G Wade, C Waring, M Weber, J Weder, B Wehbe, J Weingrill, M Woche, M Xompero, E Zackrisson, A Zanutta, MR Zapatero Osorio, M Zechmeister, J Zimara

From assembly to the complete integration and verification of the SOXS common path

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 12184 (2022) 1218482-1218482-8

Authors:

Kalyan Kumar Radhakrishnan Santhakumari, Federico Battaini, Riccardo Claudi, Alessandra Slemer, F Biondi, M Munari, RZ Sanchez, M Aliverti, L Oggioni, M Colapietro, D Ricci, L Lessio, M Dima, L Marafatto, S Campana, P Schipani, S D'Orsi, B Salasnich, A Baruffolo, S Ben-Ami, G Capasso, R Cosentino, F D'Alessio, P D'Avanzo, O Hershko, H Kuncarayakti, M Landoni, G Pignata, A Rubin, S Scuderi, F Vitali, D Young, J Achrén, José Antonio Araiza-Durán, Anna Brucalassi, R Bruch, Enrico Cappellaro, R Di Benedetto, A Gal-Yam, Matteo Genoni, M Hernandez, J Kotilainen, G Li Causi, S Mattila, Michael Rappaport, M Riva, S Smartt, M Stritzinger, H Venturae

Laboratory test of the VIS detector system of SOXS for the ESO-NTT Telescope

Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 12184 (2022) 121845i-121845i-9

Authors:

Rosario Cosentino, Marcos Hernandez, Hector Ventura, Sergio Campana, Riccardo Claudi, Pietro Schipani, Matteo Aliverti, Andrea Baruffolo, Sagi Ben-Ami, Federico Biondi, Giulio Capasso, Francesco D'Alessio, Paolo D'Avanzo, Ofir Hershko, Hanindyo Kuncarayakti, Marco Landoni, Matteo Munari, Giuliano Pignata, Adam Rubin, Salvatore Scuderi, Fabrizio Vitali, David Young, Jani Achrén, José Antonio Araiza-Durán, Iair Arcavi, Anna Brucalassi, Rachel Bruch, Enrico Cappellaro, Mirko Colapietro, Massimo Della Valle, Marco De Pascale, Rosario Di Benedetto, Sergio D'Orsi, Avishay Gal-Yam, Matteo Genoni, Jari Kotilainen, Gianluca Li Causi, Laurent Marty, Seppo Mattila, Michael Rappaport, Kalyan Radhakrishnan, Davide Ricci, Marco Riva, Bernardo Salasnich, Alessandra Slemer, Stephen Smartt, Ricardo Zanmar Sanchez, Maximilian Stritzinger