364 citations · 3.4k across the 64 of their papers we have counts for
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Sulfur isotope ratios in the Large Magellanic Cloud
Y. Gong, C. Henkel, K. M. Menten +11
Sulfur isotope ratios have emerged as a promising tool for tracing stellar nucleosynthesis, quantifying stellar populations, and investigating the chemical evolution of galaxies. W…
Variations of the HCO, HCN, HNC, NH and NH deuterium fractionation in high-mass star-forming regions
A. G. Pazukhin, I. I. Zinchenko, E. A. Trofimova +2
We use spectra and maps of the and DCO, DCN, DNC, lines and ortho- and para-NHD lines, obtained with the IRAM-30m telescope…
The 107 GHz methanol transition is a dasar in G0.253+0.016
Alyssa Bulatek, Adam Ginsburg, Jeremy Darling +2
We present observations of population anti-inversion in the transition of CHOH (methanol) at 107.013831 GHz toward the Galactic Center cloud G0.253+0.016 ("The…
Star formation in the centre of NGC 1808 as observed by ALMA
Guangwen Chen, George J. Bendo, Gary A. Fuller +2
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of 85.69 and 99.02 GHz continuum emission and H42 and H40 lines emission from the central 1~kpc of…
ALMA and VLBA views on the outflow associated with an O-type protostar in G26.50+0.28
Gang Wu, Christian Henkel, Ye Xu +6
Protostellar jets and outflows are essential ingredients of the star formation process. A better understanding of this phenomenon is important in its own right as well as for many…
Gas, dust, and the CO-to-molecular gas conversion factor in low-metallicity starbursts
L. K. Hunt, F. Belfiore, F. Lelli +19
The factor relating CO emission to molecular hydrogen column density, XCO, is still subject to uncertainty, in particular at low metallicity. Here, to quantify XCO at two different…
ATLASGAL: 3-mm class I methanol masers in high-mass star formation regions
W. Yang, Y. Gong, K. M. Menten +7
We analyzed the 3-mm wavelength spectral line survey of 408 ATLASGAL clumps observed with the IRAM 30m-telescope, focusing on the class I methanol masers with frequencies near 84,…
Kinematics of Galactic Centre clouds shaped by shear-seeded solenoidal turbulence
Maya A. Petkova, J. M. Diederik Kruijssen, Jonathan D. Henshaw +17
The Central Molecular Zone (CMZ; the central ~ 500 pc of the Galaxy) is a kinematically unusual environment relative to the Galactic disc, with high velocity dispersions and a stee…
Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI
K. -Y. Huang, S. Viti, J. Holdship +19
HNCO and SiO are well known shock tracers and have been observed in nearby galaxies, including the nearby (D=3.5 Mpc) starburst galaxy NGC 253. The simultaneous detection of these…
183 GHz water megamasers in active galactic nuclei: a new accretion disk tracer
Dominic W. Pesce, James A. Braatz, Christian Henkel +3
We present the results of an ALMA survey to identify 183 GHz HO maser emission from AGN already known to host 22 GHz megamaser systems. Out of 20 sources observed, we detect si…
HCN-HNC intensity ratio as a temperature indicator of interstellar clouds
A. G. Pazukhin, I. I. Zinchenko, E. A. Trofimova +1
With the 30-m IRAM radio telescope, we observed several massive star forming regions at wavelengths of 3-4 and 2 mm. The temperature of the gas in the sources was estimated from th…
Star formation timescale in the molecular filament WB 673
O. L. Ryabukhina, M. S. Kirsanova, C. Henkel +1
We present observations of ammonia emission lines toward the interstellar filament WB~673 hosting the dense clumps WB~673, WB~668, S233-IR and G173.57+2.43. LTE analysis of the lin…
Tracing Interstellar Heating: An ALCHEMI Measurement of the HCN Isomers in NGC 253
Erica Behrens, Jeffrey G. Mangum, Jonathan Holdship +17
We analyze HCN and HNC emission in the nearby starburst galaxy NGC 253 to investigate its effectiveness in tracing heating processes associated with star formation. This study uses…
ALCHEMI finds a "shocking" carbon footprint in the starburst galaxy NGC~253
Nanase Harada, Sergio Martin, Jeff Mangum +15
Centers of starburst galaxies may be characterized by a specific gas and ice chemistry due to their gas dynamics and the presence of various ice desorption mechanisms. This may res…
Sulphur and carbon isotopes towards Galactic centre clouds
P. K. Humire, V. Thiel, C. Henkel +9
Measuring isotopic ratios is a sensitive technique used to obtain information on stellar nucleosynthesis and chemical evolution. We present measurements of the carbon and sulphur a…
Sardinia Radio Telescope observations of Local Group dwarf galaxies -- I. The cases of NGC6822, IC1613, and WLM
A. Tarchi, P. Castangia, G. Surcis +10
Almost all dwarf galaxies in the Local Group that are not satellites of the Milky Way or M31, belong to either one of two highly-symmetric planes. It is still a matter of debate, w…
The hidden heart of the luminous infrared galaxy IC 860 I. A molecular inflow feeding opaque, extreme nuclear activity
S. Aalto, S. Muller, S. König +19
High-resolution (0."03 - 0."09) (9 - 26 pc)) ALMA (100 - 350 GHz (3 - 0.8 mm)) and VLA 45 GHz measurements have been used to image continuum and spectral line emission from the inn…
Star Formation Efficiencies at Giant Molecular Cloud Scales in the Molecular Disk of the Elliptical Galaxy NGC 5128 (Centaurus A)
D. Espada, S. Verley, R. E. Miura +15
We present ALMA CO(1-0) observations toward the dust lane of the nearest elliptical and radio galaxy, NGC 5128 (Centaurus A), with high angular resolution ( 1 arcsec, or 18 p…
Spatially resolved carbon and oxygen isotopic ratios in NGC 253 using optically thin tracers
S. Martin, S. Muller, C. Henkel +4
To trace chemical evolution in a prototypical starburst environment, we spatially resolve the carbon and oxygen isotope ratios across the central molecular zone (full size ~$\sim 6…
Hidden or missing outflows in highly obscured galaxy nuclei?
N. Falstad, F. Hallqvist, S. Aalto +19
Understanding the nuclear growth and feedback processes in galaxies requires investigating their often obscured central regions. One way to do this is to use (sub)millimeter line e…
Spatially resolved cold molecular outflows in ULIRGs
M. Pereira-Santaella, L. Colina, S. Garcia-Burillo +11
We present new CO(2-1) observations of 3 low-z (~350 Mpc) ULIRG systems (6 nuclei) observed with ALMA at high-spatial resolution (~500 pc). We detect massive cold molecular gas out…
A systematic observational study of radio properties of H2O megamaser Seyfert 2s: A Guide for H2O megamaser surveys
J. S. Zhang, Z. W. Liu, C. Henkel
Analyzing archival data from different telescopes, H2O megamaser Seyfert 2s appeared to exhibit higher nuclear radio luminosities than non-masing Seyfert 2s (Zhang et al. 2012). Th…
ATLASGAL-selected massive clumps in the inner Galaxy: VI. Kinetic temperature and spatial density measured with formaldehyde
X. D. Tang, C. Henkel, F. Wyrowski +11
We aim to directly determine the kinetic temperature and spatial density with formaldehyde for the 100 brightest ATLASGAL-selected clumps at 870 m representing various evo…
ALMA imaging of C2H emission in the disk of NGC1068
S. Garcia-Burillo, S. Viti, F. Combes +16
We study the feedback of star formation and nuclear activity on the chemistry of molecular gas in NGC1068, a nearby (D=14Mpc) Seyfert 2 barred galaxy, by analyzing if the abundance…