390 citations · 1.1k across the 9 of their papers we have counts for
8 papers · 1 filter
The prospects of finding the first quasars in the universe
Dominik R. G. Schleicher, Marco Spaans, Ralf S. Klessen
We study the prospects of finding the first quasars in the universe with ALMA and JWST. For this purpose, we derive a model for the high-redshift black hole population based on obs…
High-resolution HNC 3-2 SMA observations of Arp220
S. Aalto, D. Wilner, M. Spaans +4
We present high resolution (0."4) observations of HNC J=3-2 with the SubMillimeter Array (SMA). We find luminous HNC 3-2 line emission in the western part of Arp220, centered on th…
The James Clerk Maxwell Telescope Legacy Survey of Nearby Star-forming Regions in the Gould Belt
D. Ward-Thompson, J. Di Francesco, J. Hatchell +59
This paper describes a James Clerk Maxwell Telescope (JCMT) legacy survey that has been awarded roughly 500 hrs of observing time to be carried out from 2007 to 2009. In this surve…
Overluminous HNC Line Emission in Arp220, NGC4418 and Mrk231 - Global IR Pumping or XDRs?
S. Aalto, M. Spaans, M. C. Wiedner +1
We find that the HNC J=3-2 emission is brighter than the HCN 3-2 emission by factors of 1.5 to 2.3 in the ultraluminous mergers Arp220 and Mrk231 and the luminous IR galaxy NGC4418…
The JCMT Spectral Legacy Survey
R. Plume, G. A. Fuller, F. Helmich +30
Stars form in the densest, coldest, most quiescent regions of molecular clouds. Molecules provide the only probes which can reveal the dynamics, physics, chemistry and evolution of…
Diagnostics of irradiated dense gas in galaxy nuclei. II. A grid of XDR and PDR models
R. Meijerink, M. Spaans, F. P. Israel
\abridged The nuclei of active galaxies harbor massive young stars, an accreting central black hole, or both. In order to determine the physical conditions that pertain to molecula…