Inami, H.; Decarli, R.; Walter, F.; Weiss, A.; Carilli, C.; Aravena, M.; Boogaard, L.; Gonzaĺez-López, J.; Popping, G.; da Cunha, E. et al.; Bacon, R.; Bauer, F.; Contini, T.; Cortes, P. C.; Cox, P.; Daddi, E.; Díaz-Santos, T.; Kaasinen, M.; Riechers, D. A.; Wagg, J.; van der Werf, P.; Wisotzki, L.: The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Constraining the Molecular Content at log(M*/M☉) ∼ 9.5 with CO Stacking of MUSE-detected z ∼ 1.5 Galaxies. \apj 902 (2), 113, p. 113 (2020)

Indebetouw, R.; Wong, T.; Chen, C.-H. R.; Kepley, A.; Lebouteiller, V.; Madden, S.; Oliveira, J. M.: Structural and Dynamical Analysis of 0.1 pc Cores and Filaments in the 30 Doradus-10 Giant Molecular Cloud. \apj 888 (2), 56, p. 56 (2020)

Jacob, A. M.; Menten, K. M.; Wiesemeyer, H.; Güsten, R.; Wyrowski, F.; Klein, B.: First detection of 13CH in the interstellar medium. åp 640, A125, p. A125 (2020)

Jacob, A. M.; Menten, K. M.; Wyrowski, F.; Winkel, B.; Neufeld, D. A.: Extending the view of ArH+ chemistry in diffuse clouds. åp 643, A91, p. A91 (2020)

Johnston, S.; Karastergiou, A.; Keith, M.J.; Song, X.; Weltevrede, P.; Abbate, F.; Bailes, M.; Buchner, S.; Camilo, F.; Geyer, M. et al.; Hugo, B.; Jameson, A.; Kramer, M.; Parthasarathy, A.; Reardon, D.J.; Ridolfi, A.; Serylak, M.; Shannon, R.M.; Spiewak, R.; van Straten, W.; Venkatraman Krishnan, V.; Jankowski, F.; Meyers, B.W.; Oswald, L.; Posselt, B.; Sobey, C.; Szary, A.; van Leeuwen, J.: The Thousand-Pulsar-Array programme on MeerKAT - I. Science objectives and first results. \mnras 493 (3), pp. 3608 - 3615 (2020)

Johnston, S.; Smith, D.A.; Karastergiou, A.; Kramer, M.: The Galactic population and properties of young, highly energetic pulsars. \mnras 497 (2), pp. 1957 - 1965 (2020)

Jørgensen, J. K.; Belloche, A.; Garrod, R. T.: Astrochemistry During the Formation of Stars. \araa 58, pp. 727 - 778 (2020)

Kaasinen, M.; Walter, F.; Novak, M.; Neeleman, M.; Smail, I.; Boogaard, L.; Cunha, E. d.; Weiss, A.; Liu, D.; Decarli, R. et al.; Popping, G.; Diaz-Santos, T.; Cortés, P.; Aravena, M.; Werf, P. v. d.; Riechers, D.; Inami, H.; Hodge, J. A.; Rix, H.-W.; Cox, P.: A Comparison of the Stellar, CO, and Dust-continuum Emission from Three Star-forming HUDF Galaxies at z {\ensuremath{∼}} 2. \apj 899 (1), 37, p. 37 (2020)

Kadler, M.; Hessdoerfer, J.; Eppel, F.; Bach, U.; Kraus, A.; Gokus, A.; Paraschos, G.-F.; Ros, E.; Dorner, D.; Edwards, P. G. et al.; Giroletti, M.; Koyama, S.; Krichbaum, T.; Lindfors, E.; Mannheim, K.; Ojha, R.; Roesch, F.; Sinapius, J.; Schleicher, B.; Sitarek, J.; Wachter, L.; Wilms, J.: Contemporary Effelsberg Observations of Two Radio Sources in the Fields of IceCube-201114A and IceCube-201115A. The Astronomer's Telegram 14191, p. 1 (2020)

Kadler, M.; Hessdoerfer, J.; Eppel, F.; Bach, U.; Kraus, A.; Gokus, A.; Paraschos, G.-F.; Ros, E.; Dorner, D.; Edwards, P. G. et al.; Giroletti, M.; Koyama, S.; Krichbaum, T.; Lindfors, E.; Mannheim, K.; Ojha, R.; Roesch, F.; Sinapius, J.; Schleicher, B.; Sitarek, J.; Wachter, L.; Wilms, J.: Correction to ATel 14191 (Contemporary Effelsberg Observations of Two Radio Sources in the Fields of IceCube-201114A and IceCube-201115A). The Astronomer's Telegram 14194, p. 1 (2020)

Kamiński, T.; Menten, K. M.; Tylenda, R.; Wong, K. T.; Belloche, A.; Mehner, A.; Schmidt, M. R.; Patel, N. A.: Molecular remnant of Nova 1670 (CK Vulpeculae). I. Properties and enigmatic origin of the gas. åp 644, A59, p. A59 (2020)

Karuppusamy, R.; Desvignes, G.; Kramer, M.; Porayko, N.; Champion, D.; Torne, P.; Stappers, B.; van der Horst, A.; Kouveliotou, C.; O'Connor, B.: Detection of pulsed radio emission from new magnetar Swift J1818.0-1607. The Astronomer's Telegram 13553, p. 1 (2020)

Kierdorf, M.; Mao, S.A.; Beck, R.; Basu, A.; Fletcher, A.; Horellou, C.; Tabatabaei, F.; Ott, J.; Haverkorn, M.: The magnetized disk-halo transition region of M 51. åp 642, A118, p. A118 (2020)

Kim, J.-Y.; Krichbaum, T. P.; Broderick, A. E.; Wielgus, M.; Blackburn, L.; Gómez, J. L.; Johnson, M. D.; Bouman, K. L.; Chael, A.; Akiyama, K. et al.; et al., i.; Savolainen, T.; Alef, W.; Azulay, R.; Baczko, A.-K.; Britzen, S.; Eatough, R.P.; Karuppusamy, R.; Kramer, M.; Lico, R.; Liu, K.; Lobanov, A.P.; Lu, R.-S.; MacDonald, N.R.; Menten, K.M.; Müller, C.; Noutsos, A.; Ortiz-Leon, G.N.; Ros, E.; Rottmann, H.; Roy, A.L.; Shao, L.; Torne, P.; Traianou, E.; Wagner, J.; Wex, N.; Wharton, R.; Zensus, J.A.; Bach, U.; Dornbusch, S.; Dzib, S.A.; Eckart, A.; Graham, D.A.; Hernandez-Gomez, A.; Heyminck, S.; Muders, D.: Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution. åp 640, A69, p. A69 (2020)

Kim, W.-J.; Wyrowski, F.; Urquhart, J.S.; Pérez-Beaupuits, J.P.; Pillai, T.; Tiwari, M.; Menten, K.M.: ATLASGAL-selected massive clumps in the inner Galaxy. VIII. Chemistry of photodissociation regions. åp 644, A160, p. A160 (2020)

Kirichenko, A.Y.; Karpova, A.V.; Zyuzin, D.A.; Zharikov, S.V.; López, E.A.; Shibanov, Y.A.; Freire, P.C.C.; Fonseca, E.; Cabrera-Lavers, A.: Searching for optical companions to four binary millisecond pulsars with the Gran Telescopio Canarias. \mnras 492 (2), pp. 3032 - 3040 (2020)

Kirsanova, M.S.; Ossenkopf-Okada, V.; Anderson, L.D.; Boley, P.A.; Bieging, J.H.; Pavlyuchenkov, Y. N.; Luisi, M.; Schneider, N.; Andersen, M.; Samal, M.R. et al.; Sobolev, A.M.; Buchbender, C.; Aladro, R.; Okada, Y.: The PDR structure and kinematics around the compact H II regions S235 A and S235 C with [C II], [13C II], [O I], and HCO+ line profiles. \mnras 497 (3), pp. 2651 - 2669 (2020)

Kollatschny, W.; Grupe, D.; Parker, M.L.; Ochmann, M.W.; Schartel, N.; Herwig, E.; Komossa, S.; Romero-Colmenero, E.; Santos-Lleo, M.: Optical and X-ray discovery of the changing-look AGN IRAS 23226-3843 showing extremely broad and double-peaked Balmer profiles. åp 638, A91, p. A91 (2020)

Komossa, S.; Grupe, D.: Multiple flares during the April-June 2020 outburst of the blazar OJ 287. The Astronomer's Telegram 13785, p. 1 (2020)

Komossa, S.; Grupe, D.; Gallo, L.C.; Poulos, P.; Blue, D.; Kara, E.; Kriss, G.; Longinotti, A.L.; Parker, M.L.; Wilkins, D.: Lifting the curtain: The Seyfert galaxy Mrk 335 emerges from deep low-state in a sequence of rapid flare events. åp 643, L7, p. L7 (2020)