UGC 4211: A Confirmed Dual Active Galactic Nucleus in the Local Universe at 230 pc Nuclear Separation

Autor: Michael J. Koss, Ezequiel Treister, Darshan Kakkad, J. Andrew Casey-Clyde, Taiki Kawamuro, Jonathan Williams, Adi Foord, Benny Trakhtenbrot, Franz E. Bauer, George C. Privon, Claudio Ricci, Richard Mushotzky, Loreto Barcos-Munoz, Laura Blecha, Thomas Connor, Fiona Harrison, Tingting Liu, Macon Magno, Chiara M. F. Mingarelli, Francisco Muller-Sanchez, Kyuseok Oh, T. Taro Shimizu, Krista Lynne Smith, Daniel Stern, Miguel Parra Tello, C. Megan Urry

Publikováno v: The Astrophysical Journal Letters, Vol 942, Iss 1, p L24 (2023)

We present multiwavelength high-spatial resolution (∼0.″1, 70 pc) observations of UGC 4211 at z = 0.03474, a late-stage major galaxy merger at the closest nuclear separation yet found in near-IR imaging (0.″32, ∼230 pc projected separation).

Externí odkaz: https://doaj.org/article/579db5f907af4274843115690c67e09b

Constraining particle acceleration in Sgr A⋆ with simultaneous GRAVITY, Spitzer, NuSTAR, and Chandra observations

Autor: Wolfgang Brandner, A. Jiménez-Rosales, Mark Gurwell, Stefan Hippler, Christian Straubmeier, Th. Henning, Fiona A. Harrison, Jason Dexter, N. M. Förster Schreiber, F. Vincent, Pierre Kervella, Daryl Haggard, S. Yazici, Silvia Scheithauer, Oliver Pfuhl, Y. Dallilar, T. Taro Shimizu, Idel Waisberg, Odele Straub, K. Foster, Felix Widmann, Sera Markoff, Dieter Lutz, J.-B. Le Bouquin, M. Bauböck, Matthew Horrobin, Yann Clénet, P. T. de Zeeuw, Gabriele Ghisellini, Howard A. Smith, Frederick K. Baganoff, Daniel Stern, Thibaut Paumard, Eckhard Sturm, Ric Davies, M. Nowak, Andreas Eckart, Andreas Kaufer, Sebastian Rabien, Laurent Jocou, Paulo J. V. Garcia, Ekkehard Wieprecht, Reinhard Genzel, Jinyi Shangguan, G. Rodríguez-Coira, Patrick Lowrance, C. J. Hailey, Thomas Ott, S. Zhang, A. Drescher, G. Ponti, Giovanni G. Fazio, Steven P. Willner, S. D. von Fellenberg, Linda J. Tacconi, Maryam Habibi, H. Bonnet, Julien Woillez, V. Lapeyrère, Sylvestre Lacour, António Amorim, Erich Wiezorrek, Xavier Haubois, Guy Perrin, J. Neilsen, K. Mori, Eric Gendron, Frank Eisenhauer, G. Heißel, Pierre Léna, Joseph L. Hora, Karine Perraut, Charles F. Gammie, Feng Gao, G. Witzel, Gérard Zins, Mark Morris, André Young, Julia Stadler, Jean-Phillipe Berger, Hope Boyce, Stefan Gillessen, Lieselotte Jochum, Roberto Abuter

Publikováno v: Astronomy and Astrophysics, 654, 1-18
Astronomy & Astrophysics, 654:A22. EDP Sciences
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 654, pp.A22. ⟨10.1051/0004-6361/202140981⟩
Astronomy & Astrophysics

We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the $M$-, $K$-, and $H$-bands in the mid- and near-infrared and in the $2-8~\mathrm{keV}$ and $2-70~\mathrm{keV}$

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b318bce0dbccbb512624716eecc8f67
https://doi.org/10.1051/0004-6361/202140981

The Diverse Molecular Gas Content of Massive Galaxies Undergoing Quenching at z ∼ 1

Autor: Ken-ichi Tadaki, Rebecca L. Davies, Hannah Übler, Jinyi Shangguan, Reinhard Genzel, Natascha M. Förster-Schreiber, Rodrigo Herrera-Camus, Joel Leja, Minju Lee, Erica J. Nelson, Dieter Lutz, Roberto Neri, Linda J. Tacconi, T. Taro Shimizu, Sedona H. Price, Karl Schuster, Francoise Combes, Richard I. Davies, Santiago García-Burillo, Sandro Tacchella, Alessandra Contursi, Benjamin D. Johnson, Sirio Belli

Publikováno v: The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2021, 909 (1), pp.L11. ⟨10.3847/2041-8213/abe6a6⟩

We present a detailed study of the molecular gas content and stellar population properties of three massive galaxies at 1 < z < 1.3 that are in different stages of quenching. The galaxies were selected to have a quiescent optical/near-infrared spectr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a391ed5fadfc023a93930fdd47a2b40c
https://hal.archives-ouvertes.fr/hal-03511686

Detection of faint stars near Sagittarius A* with GRAVITY

Autor: Christian Straubmeier, Stefan Hippler, Th. Henning, Feng Gao, Gérard Zins, Maryam Habibi, Linda J. Tacconi, Oliver Pfuhl, V. Lapeyrère, Xavier Haubois, Guy Perrin, A. Jiménez-Rosales, Felix Widmann, G. Heißel, António Amorim, Stefan Gillessen, Yann Clénet, P. T. de Zeeuw, H. Bonnet, Jason Dexter, Paulo J. V. Garcia, Julien Woillez, Ric Davies, Lieselotte Jochum, Eric Gendron, G. Rodríguez-Coira, Eckhard Sturm, Laurent Jocou, Jinyi Shangguan, S. Yazici, T. Taro Shimizu, Thibaut Paumard, M. Nowak, M. Bauböck, Karine Perraut, Reinhard Genzel, N. M. Förster Schreiber, Wolfgang Brandner, Matthew Horrobin, Julia Stadler, Thomas Ott, Idel Waisberg, A. Drescher, S. von Fellenberg, Sebastian Rabien, Ekkehard Wieprecht, F. Vincent, Pierre Kervella, Jean-Philippe Berger, Odele Straub, Dieter Lutz, J.-B. Le Bouquin, Sylvestre Lacour, Silvia Scheithauer, Y. Dallilar, Andreas Kaufer, Frank Eisenhauer, Pierre Léna, Erich Wiezorrek, Roberto Abuter

Publikováno v: Astron.Astrophys.
Astron.Astrophys., 2021, 645, pp.A127. ⟨10.1051/0004-6361/202039544⟩
Astronomy and Astrophysics, 645, 1-10

International audience; The spin of the supermassive black hole that resides at the Galactic Center can, in principle, be measured by accurate measurements of the orbits of stars that are much closer to Sgr A* than S2, the orbit of which recently pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15af2614a73b2322746873c993267b30
https://doi.org/10.1051/0004-6361/202039544

The KMOS3DSurvey: Investigating the Origin of the Elevated Electron Densities in Star-forming Galaxies at 1 ≲ z ≲ 3

Autor: N. M. Förster Schreiber, Jeffrey C. C. Chan, Ric Davies, Matteo Fossati, M. H. Fabricius, Amiel Sternberg, S. Belli, T. Taro Shimizu, T. Naab, R. Genzel, A. Burkert, Dieter Lutz, Sedona H. Price, Linda J. Tacconi, Alvio Renzini, Alessandra Beifiori, D. Wilman, A. Contursi, Andreas Schruba, J. T. Mendel, Hannah Übler, Rodrigo Herrera-Camus, Emily Wisnioski, R. P. Saglia, Minju Lee, Stijn Wuyts, Rebecca L. Davies

Publikováno v: Davies, R L, Schreiber, N M F, Genzel, R, Shimizu, T T, Schruba, A, Tacconi, L J, Übler, H, Wisnioski, E, Wuyts, S, Fossati, M, Herrera-camus, R, Lutz, D, Mendel, J T, Naab, T, Price, S H, Renzini, A, Wilman, D, Beifiori, A, Belli, S, Burkert, A, Chan, J, Contursi, A, Fabricius, M, Saglia, R P & Sternberg, A 2021, ' The KMOS 3D Survey: Investigating the Origin of the Elevated Electron Densities in Star-forming Galaxies at 1 ≲ z ≲ 3 ', The Astrophysical Journal, vol. 909, no. 1, 78 . https://doi.org/10.3847/1538-4357/abd551
The Astrophysical Journal

We investigate what drives the redshift evolution of the typical electron density (n e ) in star-forming galaxies, using a sample of 140 galaxies drawn primarily from KMOS3D (0.6 < z < 2.6) and 471 galaxies from SAMI (z < 0.113). We select galaxies t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::117bcee5cad98df7580bc68c1d678d49
http://hdl.handle.net/10281/324947