53 citations · 320 across the 19 of their papers we have counts for
19 papers
The Cygnus Allscale Survey of Chemistry and Dynamical Environments: CASCADE III. The large scale distribution of DCO+, DNC and DCN in the DR21 filament
I. Barlach Christensen, F. Wyrowski, V. S. Veena +12
Deuterated molecules and their molecular D/H-ratios (RD(D)) are important diagnostic tools to study the physical conditions of star-forming regions. The degree of deuteration, RD(D…
The SOFIA FEEDBACK Legacy Survey: Rapid molecular cloud dispersal in RCW 79
L. Bonne, S. Kabanovic, N. Schneider +12
It has long been discussed whether stellar feedback in the form of winds and/or radiation can shred the nascent molecular cloud, thereby controlling the star formation rate. Howeve…
Protonated hydrogen cyanide as a tracer of pristine molecular gas
Y. Gong, F. J. Du, C. Henkel +11
Protonated hydrogen cyanide, HCNH, plays a fundamental role in astrochemistry because it is an intermediary in gas-phase ion-neutral reactions within cold molecular clouds. H…
First detection of deuterated methylidyne (CD) in the interstellar medium
Arshia M. Jacob, Karl M. Menten, Friedrich Wyrowski +1
While the abundance of elemental deuterium is relatively low (D/H ~ a few 1E-5), orders of magnitude higher D/H abundance ratios have been found for many interstellar molecules, en…
The MPIfR-MeerKAT Galactic Plane survey I -- System setup and early results
P. V. Padmanabh, E. D. Barr, S. S. Sridhar +30
Galactic plane radio surveys play a key role in improving our understanding of a wide range of astrophysical phenomena. Performing such a survey using the latest interferometric te…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules II. The absorption line survey with the IRAM 30 m telescope
W. -J. Kim, P. Schilke, D. A. Neufeld +11
As a complement to the HyGAL Stratospheric Observatory for Infrared Astronomy Legacy Program, we report the results of a ground-based absorption line survey of simple molecules in…
Ammonia in the interstellar medium of a starbursting disc at z=2.6
M. J. Doherty, J. E. Geach, R. J. Ivison +4
We report the detection of the ground state rotational emission of ammonia, ortho-NH in a gravitationally lensed, intrinsically hyperluminous, star-bu…
The SOFIA FEEDBACK Legacy Survey: Dynamics and mass ejection in the bipolar HII region RCW 36
L. Bonne, N. Schneider, P. García +20
We present [CII] 158 m and [OI] 63 m observations of the bipolar HII region RCW 36 in the Vela C molecular cloud, obtained within the SOFIA legacy project FEEDBACK, which is…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules -- I. Survey description and a first look toward W3(OH), W3 IRS5 and NGC 7538 IRS1
A. M. Jacob, D. A. Neufeld, P. Schilke +22
The HyGAL SOFIA legacy program surveys six hydride molecules -- ArH+, OH+, H2O+, SH, OH, and CH -- and two atomic constituents -- C+ and O -- within the diffuse interstellar medium…
ArH+ and H2O+ absorption towards luminous galaxies
Arshia M. Jacob, Karl M. Menten, Friedrich Wyrowski +3
Along several sight lines within the Milky Way ArH+ has been ubiquitously detected with only one detection in extragalactic environments, namely along two sight lines in the red sh…
The chemistry of chlorine-bearing species in the diffuse interstellar medium, and new SOFIA/GREAT observations of HCl
David A. Neufeld, Helmut Wiesemeyer, Mark J. Wolfire +6
We have revisited the chemistry of chlorine-bearing species in the diffuse interstellar medium with new observations of the HCl molecular ion and new astrochemical models. Usin…
SOFIA FEEDBACK survey: exploring the dynamics of the stellar wind driven shell of RCW 49
M. Tiwari, R. Karim, M. W. Pound +13
We unveil the stellar wind driven shell of the luminous massive star-forming region of RCW 49 using SOFIA FEEDBACK observations of the [CII] 158 m line. The complementary datase…
The CH radical at radio wavelengths: Revisiting emission in the 3.3GHz ground state lines
Arshia M. Jacob, Karl M. Menten, Helmut Wiesemeyer +1
The intensities of the three widely observed radio-wavelength hyperfine structure (HFS) lines between the Λ-doublet components of the rotational ground state of CH are inconsistent…
Hunting for the elusive methylene radical
A. M. Jacob, K. M. Menten, Y. Gong +4
CH2 transitions between 68 and 71 GHz were first detected toward the Orion-KL and W51 Main SFRs. Given their upper level energies of 225 K, they were thought to arise in dense, hot…
The magnetic field in the dense photodissociation region of DR 21
Atanu Koley, Nirupam Roy, Karl M. Menten +3
Measuring interstellar magnetic fields is extremely important for understanding their role in different evolutionary stages of interstellar clouds and of star formation. However, d…
Extending the view of ArH+ chemistry in diffuse clouds
Arshia M. Jacob, Karl M. Menten, Friedrich Wyrowski +2
One of the surprises of the Herschel mission was the detection of ArH+ towards the Crab Nebula in emission and in absorption towards strong Galactic background sources. Although th…
First detection of 13CH in the interstellar medium
Arshia M. Jacob, Karl M. Menten, Helmut Wiesemeyer +3
In recent years, a plethora of high spectral resolution observations of sub-mm and FIR transitions of methylidene (CH), have demonstrated this radical to be a valuable proxy for H2…
Fingerprinting the effects of hyperfine structure on CH and OH far infrared spectra using Wiener filter deconvolution
Arshia M. Jacob, Karl M. Menten, Helmut Wiesemeyer +3
In this paper, we investigate the influence of hyperfine splitting on complex spectral lines, with the aim of evaluating canonical abundances by decomposing their dependence on hyp…
Unveiling the chemistry of interstellar CH: Spectroscopy of the 2 THz ground state line
Helmut Wiesemeyer, Rolf Güsten, Karl M. Menten +6
The methylidyne radical CH is commonly used as a proxy for H in the cold, neutral phase of the interstellar medium. The optical spectroscopy of CH is limited by interstellar ex…