Galaxy formation and evolution

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Statistical Properties of the Population of the Galactic Center Filaments: the Spectral Index and Equipartition Magnetic Field

The Astrophysical Journal Letters American Astronomical Society 925:2 (2022) l18

Authors:

F Yusef-Zadeh, RG Arendt, M Wardle, I Heywood, W Cotton, F Camilo
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Subgalactic Scaling Relations with T e-based Metallicities of Low-metallicity Regions in Galaxies: Metal-poor Gas Inflow May Have Important Effects?

The Astrophysical Journal American Astronomical Society 926:1 (2022) 57

Authors:

Yao Yao, Haiyang Liu, Xu Kong, Yulong Gao, Guangwen Chen, Xinkai Chen, Zhixiong Liang, Zesen Lin, Yimeng Tang, Hong-Xin Zhang
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The 1.28 GHz MeerKAT Galactic Center Mosaic

The Astrophysical Journal American Astronomical Society 925:2 (2022) 165

Authors:

I Heywood, I Rammala, F Camilo, WD Cotton, F Yusef-Zadeh, TD Abbott, RM Adam, G Adams, MA Aldera, KMB Asad, EF Bauermeister, TGH Bennett, HL Bester, WA Bode, DH Botha, AG Botha, LRS Brederode, S Buchner, JP Burger, T Cheetham, DIL de Villiers, MA Dikgale-Mahlakoana, LJ du Toit, SWP Esterhuyse, BL Fanaroff, S February, DJ Fourie, BS Frank, RRG Gamatham, M Geyer, S Goedhart, M Gouws, SC Gumede, MJ Hlakola, A Hokwana, SW Hoosen, JMG Horrell, B Hugo, AI Isaacson, GIG Józsa, JL Jonas, AF Joubert, RPM Julie, FB Kapp, JS Kenyon, PPA Kotzé, N Kriek, H Kriel, VK Krishnan, R Lehmensiek, D Liebenberg, RT Lord, BM Lunsky, K Madisa, LG Magnus, O Mahgoub, A Makhaba, S Makhathini, JA Malan, JR Manley, SJ Marais, A Martens, T Mauch, BC Merry, RP Millenaar, N Mnyandu, OJ Mokone, TE Monama, MC Mphego, WS New, B Ngcebetsha, KJ Ngoasheng, MT Ockards, N Oozeer, AJ Otto, SS Passmoor, AA Patel, A Peens-Hough, SJ Perkins, AJT Ramaila, NMR Ramanujam, ZR Ramudzuli, SM Ratcliffe, A Robyntjies, S Salie, N Sambu, CTG Schollar, LC Schwardt, RL Schwartz, M Serylak, R Siebrits, SK Sirothia, M Slabber, OM Smirnov, L Sofeya, B Taljaard, C Tasse, AJ Tiplady, O Toruvanda, SN Twum, TJ van Balla, A van der Byl, C van der Merwe, V Van Tonder, R Van Wyk, AJ Venter, M Venter, BH Wallace, MG Welz, LP Williams, B Xaia
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EDGE: the puzzling ellipticity of Eridanus II's star cluster and its implications for dark matter at the heart of an ultra-faint dwarf

(2022)

Authors:

Matthew DA Orkney, Justin I Read, Oscar Agertz, Andrew Pontzen, Martin P Rey, Alex Goater, Ethan Taylor, Stacy Y Kim, Maxime Delorme
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Catalogues of voids as antihaloes in the local Universe

Monthly Notices of the Royal Astronomical Society: Letters Oxford University Press 511:1 (2022) L45-L49

Authors:

H Desmond, Ml Hutt, J Devriendt, A Slyz

Abstract:

A recently proposed algorithm identifies voids in simulations as the regions associated with haloes when the initial overdensity field is negated. We apply this method to the real Universe by running a suite of constrained simulations of the 2M++ volume with initial conditions inferred by the BORG algorithm, along with the corresponding inverted set. Our 101 inverted and uninverted simulations, spanning the BORG posterior, each identify ∼150 000 ‘voids as antihaloes’ with mass exceeding 4.38 × 1011 M⊙ (100 particles) at z = 0 in a full-sky sphere of radius 155 Mpc h−1 around the Milky Way. We calculate the size function, volume filling fraction, ellipticity, central density, specific angular momentum, clustering, and stacked density profile of the voids, and cross-correlate them with those produced by VIDE on the same simulations. We make our antihalo and VIDE catalogues publicly available.
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