Hintze Centre for Astrophysical Surveys

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A MeerKAT Survey of Nearby Novalike Cataclysmic Variables

(2020)

Authors:

DM Hewitt, ML Pretorius, PA Woudt, E Tremou, JCA Miller-Jones, C Knigge, N Castro Segura, DRA Williams, RP Fender, R Armstrong, P Groot, I Heywood, A Horesh, AJ van der Horst, E Koerding, VA McBride, KP Mooley, A Rowlinson, B Stappers, RAMJ Wijers
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Observation of inverse Compton emission from a long $\gamma$-ray burst

(2020)

Authors:

VA Acciari, S Ansoldi, LA Antonelli, A Arbet Engels, D Baack, A Babić, B Banerjee, U Barres de Almeida, JA Barrio, J Becerra González, W Bednarek, L Bellizzi, E Bernardini, A Berti, J Besenrieder, W Bhattacharyya, C Bigongiari, A Biland, O Blanch, G Bonnoli, Ž Bošnjak, G Busetto, R Carosi, G Ceribella, Y Chai, A Chilingaryan, S Cikota, SM Colak, U Colin, E Colombo, JL Contreras, J Cortina, S Covino, V D'Elia, P Da Vela, F Dazzi, A De Angelis, B De Lotto, M Delfino, J Delgado, D Depaoli, F Di Pierro, L Di Venere, E Do Souto Espiñeira, D Dominis Prester, A Donini, D Dorner, M Doro, D Elsaesser, V Fallah Ramazani, A Fattorini, G Ferrara, D Fidalgo, L Foffano, MV Fonseca, L Font, C Fruck, S Fukami, RJ García López, M Garczarczyk, S Gasparyan, M Gaug, N Giglietto, F Giordano, N Godinović, D Green, D Guberman, D Hadasch, A Hahn, J Herrera, J Hoang, D Hrupec, M Hütten, T Inada, S Inoue, K Ishio, Y Iwamura, L Jouvin, D Kerszberg, H Kubo, J Kushida, A Lamastra, D Lelas, F Leone, E Lindfors, S Lombardi, F Longo, M López, R López-Coto, A López-Oramas, S Loporchio, B Machado de Oliveira Fraga, C Maggio, P Majumdar, M Makariev, M Mallamaci, G Maneva, M Manganaro, K Mannheim, L Maraschi, M Mariotti, M Martínez, D Mazin, S Mićanović, D Miceli, M Minev, JM Miranda, R Mirzoyan, E Molina, A Moralejo, D Morcuende, V Moreno, E Moretti, P Munar-Adrover, V Neustroev, C Nigro, K Nilsson, D Ninci, K Nishijima, K Noda, L Nogués, S Nozaki, S Paiano, M Palatiello, D Paneque, R Paoletti, JM Paredes, P Peñil, M Peresano, M Persic, PG Prada Moroni, E Prandini, I Puljak, W Rhode, M Ribó, J Rico, C Righi, A Rugliancich, L Saha, N Sahakyan, T Saito, S Sakurai, K Satalecka, K Schmidt, T Schweizer, J Sitarek, I Šnidarić, D Sobczynska, A Somero, A Stamerra, D Strom, M Strzys, Y Suda, T Surić, M Takahashi, F Tavecchio, P Temnikov, T Terzić, M Teshima, N Torres-Albà, L Tosti, V Vagelli, J van Scherpenberg, G Vanzo, M Vazquez Acosta, CF Vigorito, V Vitale, I Vovk, M Will, D Zarić, L Nava, P Veres, PN Bhat, MS Briggs, WH Cleveland, R Hamburg, CM Hui, B Mailyan, RD Preece, O Roberts, A von Kienlin, CA Wilson-Hodge, D Kocevski, M Arimoto, D Tak, K Asano, M Axelsson, G Barbiellini, E Bissaldi, F Fana Dirirsa, R Gill, J Granot, J McEnery, S Razzaque, F Piron, JL Racusin, DJ Thompson, S Campana, MG Bernardini, NPM Kuin, MH Siegel, S Bradley Cenko, P O'Brien, M Capalbi, A D'Aì, M De Pasquale, J Gropp, N Klingler, JP Osborne, M Perri, R Starling, G Tagliaferri, A Tohuvavohu, A Ursi, M Tavani, M Cardillo, C Casentini, G Piano, Y Evangelista, F Verrecchia, C Pittori, F Lucarelli, A Bulgarelli, N Parmiggiani, GE Anderson, JP Anderson, G Bernardi, J Bolmer, MD Caballero-García, IM Carrasco, A Castellón, N Castro Segura, AJ Castro-Tirado, SV Cherukuri, AM Cockeram, P D'Avanzo, A Di Dato, R Diretse, RP Fender, E Fernández-García, JPU Fynbo, AS Fruchter, J Greiner, M Gromadzki, KE Heintz, I Heywood, AJ van der Horst, Y-D Hu, C Inserra, L Izzo, V Jaiswal, P Jakobsson, J Japelj, E Kankare, DA Kann, C Kouveliotou, S Klose, AJ Levan, XY Li, S Lotti, K Maguire, DB Malesani, I Manulis, M Marongiu, S Martin, A Melandri, M Michałowski, JCA Miller-Jones, K Misra, A Moin, KP Mooley, S Nasri, M Nicholl, A Noschese, G Novara, SB Pandey, E Peretti, CJ Pérez del Pulgar, MA Pérez-Torres, DA Perley, L Piro, F Ragosta, L Resmi, R Ricci, A Rossi, R Sánchez-Ramírez, J Selsing, S Schulze, SJ Smartt, IA Smith, VV Sokolov, J Stevens, NR Tanvir, CC Thóne, A Tiengo, E Tremou, E Troja, A de Ugarte Postigo, SD Vergani, M Wieringa, PA Woudt, D Xu, O Yaron, DR Young
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Timing the earliest quenching events with a robust sample of massive quiescent galaxies at 2 < z < 5

Monthly Notices of the Royal Astronomical Society Oxford University Press 496:1 (2020) 695-707

Authors:

Ac Carnall, S Walker, Rj McLure, Js Dunlop, Dj McLeod, F Cullen, V Wild, R Amorin, M Bolzonella, M Castellano, A Cimatti, O Cucciati, A Fontana, A Gargiulo, B Garilli, Mj Jarvis, L Pentericci, L Pozzetti, G Zamorani, A Calabro, Np Hathi, Am Koekemoer

Abstract:

We present a sample of 151 massive (M∗ > 1010 M·) quiescent galaxies at 2 < z < 5, based on a sophisticated Bayesian spectral energy distribution fitting analysis of the CANDELS UDS and GOODS-South fields. Our sample includes a robust sub-sample of 61 objects for which we confidently exclude low-redshift and star-forming solutions. We identify 10 robust objects at z > 3, of which 2 are at z > 4. We report formation redshifts, demonstrating that the oldest objects formed at z > 6; however, individual ages from our photometric data have significant uncertainties, typically ∼0.5 Gyr. We demonstrate that the UVJ colours of the quiescent population evolve with redshift at z > 3, becoming bluer and more similar to post-starburst galaxies at lower redshift. Based upon this, we construct a model for the time evolution of quiescent galaxy UVJ colours, concluding that the oldest objects are consistent with forming the bulk of their stellar mass at z ∼6-7 and quenching at z ∼5. We report spectroscopic redshifts for two of our objects at z = 3.440 and 3.396, which exhibit extremely weak Ly α emission in ultra-deep VANDELS spectra. We calculate star formation rates based on these line fluxes, finding that these galaxies are consistent with our quiescent selection criteria, provided their Ly α escape fractions are >3 and >10 per cent, respectively. We finally report that our highest redshift robust object exhibits a continuum break at λ ∼7000 Å in a spectrum from VUDS, consistent with our photometric redshift of z-\mathrmphot=4.72+0.06--0.04. If confirmed as quiescent, this object would be the highest redshift known quiescent galaxy. To obtain stronger constraints on the times of the earliest quenching events, high-SNR spectroscopy must be extended to z a 3 quiescent objects.
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An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz

(2020)

Authors:

M Nicholl, T Wevers, SR Oates, KD Alexander, G Leloudas, F Onori, A Jerkstrand, S Gomez, S Campana, I Arcavi, P Charalampopoulos, M Gromadzki, N Ihanec, PG Jonker, A Lawrence, I Mandel, S Schulze, P Short, J Burke, C McCully, D Hiramatsu, DA Howell, C Pellegrino, H Abbot, JP Anderson, E Berger, PK Blanchard, G Cannizzaro, T-W Chen, M Dennefeld, L Galbany, S Gonzalez-Gaitan, G Hosseinzadeh, C Inserra, I Irani, P Kuin, T Muller-Bravo, J Pineda, NP Ross, R Roy, SJ Smartt, KW Smith, B Tucker, L Wyrzykowski, DR Young
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The Panchromatic Afterglow of GW170817: The full uniform dataset, modeling, comparison with previous results and implications

(2020)

Authors:

Sphesihle Makhathini, Kunal P Mooley, Murray Brightman, Kenta Hotokezaka, AJ Nayana, Huib T Intema, Dougal Dobie, E Lenc, Daniel A Perley, Christoffer Fremling, Javier Moldon, Davide Lazzati, David L Kaplan, Arvind Balasubramanian, Ian Brown, Dario Carbone, Poonam Chandra, Alessandra Corsi, Fernando Camilo, Adam T Deller, Dale A Frail, Tara Murphy, Eric J Murphy, Ehud Nakar, Oleg Smirnov, Robert Beswick, Rob Fender, Gregg Hallinan, Ian Heywood, Mansi M Kasliwal, Bomee Lee, Wenbin Lu, Javed Rana, SJ Perkins, Sarah V White, Gyula I Jozsa, Benjamin Hugo, Peter Kamphuis
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