1.9k citations · 54.6k across the 721 of their papers we have counts for
23 papers · 2 filters
The thermal state of molecular clouds in the Galactic Center: evidence for non-photon-driven heating
Y. Ao, C. Henkel, K. M. Menten +6
We used the Atacama Pathfinder Experiment (APEX) 12 m telescope to observe the J_KaKc=3_03-2_02, 3_22-2_21, and 3_21-2_20 transitions of para-H_2CO at 218 GHz simultaneously to det…
The Clump Mass Function of the Dense Clouds in the Carina Nebula Complex
Stephanie Pekruhl, Thomas Preibisch, Frederic Schuller +1
We want to characterize the properties of the cold dust clumps in the Carina Nebula Complex (CNC), which shows a very high level of massive star feedback. We derive the Clump Mass…
ATLASGAL - Compact source catalogue: 330 < l < 21 degrees
Y. Contreras, F. Schuller, J. S. Urquhart +12
Context. The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is the first systematic survey of the inner Galactic plane in the sub-millimetre. The observations were carri…
A multi-wavelength view of the Galactic center dust ridge reveals little star formation
K. Immer, K. M. Menten, F. Schuller +1
The Galactic center dust ridge consists of a narrow string of massive condensations identified in submillimeter dust continuum emission. To determine whether new high-mass stars ar…
Initial phases of massive star formation in high infrared extinction clouds. II. Infall and onset of star formation
K. L. J. Rygl, F. Wyrowski, F. Schuller +1
The onset of massive star formation is not well understood because of observational and theoretical difficulties. To find the dense and cold clumps where massive star formation can…
Mid-J CO emission from the Orion BN/KL explosive outflow
T. -C. Peng, L. A. Zapata, F. Wyrowski +2
High spatial resolution low-J 12CO observations have shown that the wide-angle outflow seen in the Orion BN/KL region correlates with the famous H2 fingers. Recently, high-resoluti…
Ammonia from cold high-mass clumps discovered in the inner Galactic disk by the ATLASGAL survey
M. Wienen, F. Wyrowski, F. Schuller +4
The APEX Telescope Large Area Survey: The Galaxy (ATLASGAL) is an unbiased continuum survey of the inner Galactic disk at 870 μm. It covers +/- 60 deg in Galactic longitude and aim…
Nitrogen hydrides in interstellar gas II. Analysis of Herschel/HIFI observations towards W49N and G10.6-0.4 (W31C)
C. M. Persson, M. De Luca, B. Mookerjea +14
We have used the Herschel-HIFI instrument to observe interstellar nitrogen hydrides along the sight-lines towards W49N and G10.6-0.4 in order to elucidate the production pathways l…
Chemical Analysis of a Diffuse Cloud along a Line of Sight Toward W51: Molecular Fraction and Cosmic-Ray Ionization Rate
Nick Indriolo, D. A. Neufeld, M. Gerin +4
Absorption lines from the molecules OH+, H2O+, and H3+ have been observed in a diffuse molecular cloud along a line of sight near W51 IRS2. We present the first chemical analysis t…
Herschel/HIFI observations of red supergiants and yellow hypergiants: I. Molecular inventory
D. Teyssier, G. Quintana-Lacaci, A. P. Marston +17
Red supergiant stars (RSGs) and yellow hypergiant stars (YHGs) are believed to be the high-mass counterparts of stars in the AGB and early post-AGB phases. We study the mass-loss i…
The chemistry of C3 & Carbon Chain Molecules in DR21(OH)
B. Mookerjea, G. Hassel, M. Gerin +14
(Abridged) We have observed velocity resolved spectra of four ro-vibrational far-infrared transitions of C3 between the vibrational ground state and the low-energy nu2 bending mode…
ALMA observations of the outflow from the Source I in the Orion-KL region
Luis A. Zapata, Luis F. Rodriguez, Johannes Schmid-Burgk +3
In this {\it Letter}, we present sensitive millimeter SiO (J=5-4; =0) line observations of the outflow arising from the enigmatic object Orion Source I made with the Atacama Lar…
IAU (Maser) Symposium 287 Summary
Karl M. Menten
I'm trying to summarize the science communicated via oral presentations and by posters at the IAU Symposium 287 "Cosmic Masers - from OH to H_0", which took place from January 29 t…
The quest for complex molecules in space: Laboratory spectroscopy of n-butyl cyanide, n-C4H9CN, in the millimeter wave region and its astronomical search in Sagittarius B2(N)
M. H. Ordu, H. S. P. Müller, A. Walters +5
The saturated n-propyl cyanide was recently detected in Sagittarius B2(N). The next larger unbranched alkyl cyanide is n-butyl cyanide. We provide accurate rest frequency predictio…
High-resolution absorption spectroscopy of the OH 2Pi 3/2 ground state line
Helmut Wiesemeyer, Rolf Güsten, Stefan Heyminck +5
The chemical composition of the interstellar medium is determined by gas phase chemistry, assisted by grain surface reactions, and by shock chemistry. The aim of this study is to m…
SiO maser emission from red supergiants across the Galaxy: I. Targets in massive star clusters
L. Verheyen, M. Messineo, K. M. Menten
Aims. Red supergiants (RSGs) are among the most luminous of all stars, easily detectable in external galaxies, and may ideally serve as kinematic tracers of Galactic structure. Som…
SOFIA observations of far-infrared hydroxyl emission toward classical ultracompact HII/OH maser regions
T. Csengeri, K. M. Menten, F. Wyrowski +6
The hydroxyl radical (OH) is found in various environments within the interstellar medium (ISM) of the Milky Way and external galaxies, mostly either in diffuse interstellar clouds…
Terahertz ammonia absorption as a probe of infall in high-mass star forming clumps
F. Wyrowski, R. Güsten, K. M. Menten +2
Cloud contraction and infall are the fundamental processes of star formation. While "blue-skewed" line profiles observed in high- mass star forming regions are commonly taken as ev…
Detection of OD towards the low-mass protostar IRAS16293-2422
B. Parise, F. Du, F. -C. Liu +6
Although water is an essential and widespread molecule in star-forming regions, its chemical formation pathways are still not very well constrained. Observing the level of deuteriu…
Molecules in η Carinae
Laurent Loinard, Karl M. Menten, Rolf Guesten +2
We report the detection toward η Carinae of six new molecules, CO, CN, HCO+, HCN, HNC, and N2H+, and of two of their less abundant isotopic counterparts, 13CO and H13CN. The line p…
Search for starless clumps in the ATLASGAL survey
J. Tackenberg, H. Beuther, Th. Henning +9
In this study, we present an unbiased sample of the earliest stages of massive star formation across 20 square-degree of the sky. Within the region 10deg < l < 20deg and |b| < 1deg…
Comparative study of CH+ and SH+ absorption lines observed towards distant star-forming regions
Benjamin Godard, E. Falgarone, M. Gerin +8
Aims. The HIFI instrument onboard Herschel has allowed high spectral resolution and sensitive observations of ground-state transi- tions of three molecular ions: the methylidyne ca…
Herschel observations of interstellar chloronium
David A. Neufeld, Evelyne Roueff, Ronald L. Snell +21
Using the Herschel Space Observatory's Heterodyne Instrument for the Far-Infrared (HIFI), we have observed para-chloronium (H2Cl+) toward six sources in the Galaxy. We detected int…