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.
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The Excitation of Water in the S140 Photon Dominated Region
TL;DR: In this article, the excitation of water in the Photon Dominated Region (PDR) S140 was considered and the level populations of ortho- and para-H(2)O up to similar to 350 K (i.e., 8 levels), as well as line intensities for various transitions.
Posted Content
Magnetic fields during primordial star formation
Dominik R. G. Schleicher,Sharanya Sur,Robi Banerjee,Ralf S. Klessen,Christoph Federrath,Tigran G. Arshakian,Rainer Beck,Marco Spaans +7 more
TL;DR: In this article, a lower limit of 10−15 G for the magnetic field strength in the intergalactic medium (IGM) was provided, which is consistent with theoretical expectations based on the Biermann battery effect, which predicts such IGM fields already at redshifts z~10 during gravitational collapse.
The deeply obscured AGN of NGC 4945
TL;DR: In this paper, the authors determined the spatial distribution of ISM emission features in the central 426 × 426 pc 2 of NGC 4945 and obtained an extinction map (AV) based on the apparent strength of the 97 μm silicate absorption feature.
Journal ArticleDOI
Kinetic temperature of massive star-forming molecular clumps measured with formaldehyde: IV. The ALMA view of N113 and N159W in the LMC
Xindi Tang,Xindi Tang,Christian Henkel,Christian Henkel,Christian Henkel,Karl M. Menten,Y. Gong,C. H. R. Chen,Dalei Li,Min-Young Lee,Min-Young Lee,Jeffrey G. Mangum,Yiping Ao,S. Mühle,Susanne Aalto,Santiago García-Burillo,Sergio Martín,Serena Viti,Serena Viti,Sebastien Muller,Francesco Costagliola,H. Asiri,Sergei A. Levshakov,Marco Spaans,Jürgen Ott,Caterina M. V. Impellizzeri,Yasuo Fukui,Yuxin He,Jarken Esimbek,Jianjun Zhou,X. W. Zheng,Xin-Fu Zhao,Juan Li +32 more
TL;DR: In this article, the authors used 1.6 GHz measurements of the para-H2CO JKaKc = 303-202, 322-221, and 321-220 transitions near 218.5 GHz to constrain RADEX non local thermodynamic equilibrium models of the physical conditions.