M
Marco Spaans
Researcher at Kapteyn Astronomical Institute
Publications - 219
Citations - 12155
Marco Spaans is an academic researcher from Kapteyn Astronomical Institute. The author has contributed to research in topics: Galaxy & Star formation. The author has an hindex of 57, co-authored 219 publications receiving 11467 citations. Previous affiliations of Marco Spaans include University of Groningen & Max Planck Society.
Papers
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Journal ArticleDOI
Diagnostics of irradiated gas in galaxy nuclei. I. A far-ultraviolet and X-ray dominated region code
Rowin Meijerink,Marco Spaans +1 more
TL;DR: In this article, a far-ultraviolet (PDR) and an X-ray dominated region (XDR) code is presented and a detailed comparison between PDR and XDR physics is made for total gas column densities between similar to 10(20) and similar to about 10(25) cm(-2).
Journal ArticleDOI
Molecular line emission in NGC 1068 imaged with ALMA: I. An AGN-driven outflow in the dense molecular gas
Santiago García-Burillo,Francoise Combes,A. Usero,Susanne Aalto,M. Krips,S. Viti,Almudena Alonso-Herrero,L. K. Hunt,Eva Schinnerer,Andrew J. Baker,Frédéric Boone,Viviana Casasola,Luis Colina,Francesco Costagliola,Andreas Eckart,Asunción Fuente,Carsten Henkel,Carsten Henkel,A. Labiano,Sergio Martín,Isabel Márquez,Sebastien Muller,P. Planesas,C. Ramos Almeida,C. Ramos Almeida,Marco Spaans,Linda J. Tacconi,P. van der Werf +27 more
TL;DR: In this paper, the authors used the Atacama Large Millimeter Array (ALMA) to map the emission of a set of dense molecular gas (n(H2)'1056 cm3) tracers (CO(3-2), CO(6-5), HCN(4-3), HCO+CS(7-6)) and their underlying continuum emission in the central r ∼ 2 kpc of NGC 1068 with spatial resolutions ∼0:3000:500 (∼20-35 pc for the assumed distance of D = 14 Mpc
Journal ArticleDOI
Diagnostics of irradiated dense gas in galaxy nuclei. II. A grid of XDR and PDR models
TL;DR: In this article, a grid of XDR and PDR models that span ranges in density (10 2 10 6.5 cm 3 ), irradiation (10 0.5 10 5 G0 and FX = 1.6 × 10 2 160 erg cm 2 s 1 ) and column density (3 × 10 21 1 × 10 25 cm 2 ).
Proceedings ArticleDOI
The Formation of Supermassive Black Holes in the First Galaxies
Dominik R. G. Schleicher,Robi Banerjee,Sharanya Sur,Simon C. O. Glover,Marco Spaans,Ralf S. Klessen +5 more
TL;DR: In this article, the formation of supermassive black holes in the early universe is discussed, and how to probe their subsequent evolution with the upcoming mm/sub-mm telescope ALMA, in particular considering radiation trapping and molecular dissociation effects.
Journal ArticleDOI
A photon dominated region code comparison study
Markus Röllig,Markus Röllig,N. P. Abel,Tom Bell,Tom Bell,F. Bensch,John H. Black,Gary J. Ferland,B. Jonkheid,Inga Kamp,Michael J. Kaufman,J. Le Bourlot,F. Le Petit,Rowin Meijerink,Oscar Morata,Volker Ossenkopf,Volker Ossenkopf,Evelyne Roueff,Gargi Shaw,Marco Spaans,Amiel Sternberg,J. Stutzki,Wing-Fai Thi,E. F. van Dishoeck,P. A. M. van Hoof,Serena Viti,Mark G. Wolfire +26 more
TL;DR: In this paper, a comparison between independent computer codes, modeling the physics and chemistry of interstellar photon dominated regions (PDRs), is presented, and the results of the comparison are shown to converge the output of different codes to a common solution.