584 citations · 5.5k across the 81 of their papers we have counts for
81 papers
Rotational Spectrum and First Interstellar Detection of 2-Methoxyethanol Using ALMA Observations of NGC 6334I
Zachary T. P. Fried, Samer J. El-Abd, Brian M. Hays +13
We use both chirped-pulse Fourier transform and frequency modulated absorption spectroscopy to study the rotational spectrum of 2-methoxyethanol in several frequency regions rangin…
An Automated Chemical Exploration of NGC 6334I at 340 au Resolution
Samer J. El-Abd, Crystal L. Brogan, Todd R. Hunter +3
Much of the information gleaned from observations of star-forming regions comes from the analysis of their molecular emission spectra, particularly in the radio regime. The time-co…
PDRs4All III: JWST's NIR spectroscopic view of the Orion Bar
Els Peeters, Emilie Habart, Olivier Berne +135
(Abridged) We investigate the impact of radiative feedback from massive stars on their natal cloud and focus on the transition from the HII region to the atomic PDR (crossing the i…
Explaining the Chemical Inventory of Orion KL through Machine Learning
Haley N. Scolati, Anthony J. Remijan, Eric Herbst +2
The interplay of the chemistry and physics that exists within astrochemically relevant sources can only be fully appreciated if we can gain a holistic understanding of their chemic…
Astrochemical Modeling of Propargyl Radical Chemistry in TMC-1
Alex N. Byrne, Ci Xue, Ilsa R. Cooke +2
Recent detections of aromatic species in dark molecular clouds suggest formation pathways may be efficient at very low temperatures and pressures, yet current astrochemical models…
PDRs4All IV. An embarrassment of riches: Aromatic infrared bands in the Orion Bar
Ryan Chown, Ameek Sidhu, Els Peeters +136
(Abridged) Mid-infrared observations of photodissociation regions (PDRs) are dominated by strong emission features called aromatic infrared bands (AIBs). The most prominent AIBs ar…
CoCCoA: Complex Chemistry in hot Cores with ALMA. Selected oxygen-bearing species
Y. Chen, M. L. van Gelder, P. Nazari +22
Complex organic molecules (COMs) have been observed to be abundant in the gas phase toward protostars. Deep line surveys have been carried out only for a limited number of well-kno…
Implementation of Rare Isotopologues into Machine Learning of the Chemical Inventory of the Solar-Type Protostellar Source IRAS 16293-2422
Zachary T. P. Fried, Kin Long Kelvin Lee, Alex N. Byrne +1
Machine learning techniques have been previously used to model and predict column densities in the TMC-1 dark molecular cloud. In interstellar sources further along the path of sta…
Detection of Interstellar -1-cyano-1,3-butadiene in GOTHAM Observations of TMC-1
Ilsa R. Cooke, Ci Xue, P. Bryan Changala +12
We report the detection of the lowest energy conformer of -1-cyano-1,3-butadiene (-1-CHCN), a linear isomer of pyridine, using the fourth data reduction of the GOTHAM…
Cyanopolyyne chemistry in the L1544 prestellar core: new insights from GBT observations
Eleonora Bianchi, Anthony Remijan, Claudio Codella +9
We report a comprehensive study of the cyanopolyyne chemistry in the prototypical prestellar core L1544. Using the 100m Robert C. Byrd Green Bank Telescope (GBT) we observe 3 emiss…
An Ice Age JWST inventory of dense molecular cloud ices
M. K. McClure, W. R. M. Rocha, K. M. Pontoppidan +39
Icy grain mantles are the main reservoir of the volatile elements that link chemical processes in dark, interstellar clouds with the formation of planets and composition of their a…
Astronomical Detection of the Interstellar Anion C10H- towards TMC-1 from the GOTHAM Large Program on the GBT
Anthony Remijan, Haley N. Scolati, Andrew M. Burkhardt +13
Using data from the GOTHAM (GBT Observations of TMC-1: Hunting for Aromatic Molecules) survey, we report the first astronomical detection of the C10H- anion. The astronomical obser…
An ionized outflow in Orion-KL source I?
Melvyn Wright, Tomoya Hirota, Jan Forbrich +5
We present images at 6 and 14 GHz of Source I in Orion-KL. At higher frequencies, from 43 to 340 GHz, images of this source are dominated by thermal emission from dust in a 100 AU…
Salt-bearing disk candidates around high-mass young stellar objects
Adam Ginsburg, Brett A. McGuire, Patricio Sanhueza +6
Molecular lines tracing the orbital motion of gas in a well-defined disk are valuable tools for inferring both the properties of the disk and the star it surrounds. Lines that aris…
Phosphine in the Venusian Atmosphere: A Strict Upper Limit from SOFIA GREAT Observations
M. A. Cordiner, G. L. Villanueva, H. Wiesemeyer +13
The presence of phosphine (PH) in the atmosphere of Venus was reported by Greaves et al. (2021a), based on observations of the J=1-0 transition at 267 GHz using ground-based, m…
Discovery of Interstellar 2-Cyanoindene (2-CHCN) in GOTHAM Observations of TMC-1
Madelyn L. Sita, P. Bryan Changala, Ci Xue +12
We present laboratory rotational spectroscopy of five isomers of cyanoindene (2-, 4-, 5-, 6-, and 7-cyanoindene) using a cavity Fourier-transform microwave spectrometer operating b…
Searching for Propionamide (C2H5CONH2) Toward Sagittarius B2 at Centimeter Wavelengths
Caden Schuessler, Anthony Remijan, Ci Xue +3
The formation of molecules in the interstellar medium (ISM) remains a complex and unresolved question in astrochemistry. A group of molecules of particular interest involves the li…
A Search for Heterocycles in GOTHAM Observations of TMC-1
Timothy J. Barnum, Mark A. Siebert, Kin Long Kelvin Lee +9
We have conducted an extensive search for nitrogen-, oxygen- and sulfur-bearing heterocycles toward Taurus Molecular Cloud 1 (TMC-1) using the deep, broadband centimeter-wavelength…
PDRs4All: A JWST Early Release Science Program on radiative feedback from massive stars
Olivier Berné, Émilie Habart, Els Peeters +134
Massive stars disrupt their natal molecular cloud material through radiative and mechanical feedback processes. These processes have profound effects on the evolution of interstell…
Methoxymethanol Formation Starting from CO-Hydrogenation
Jiao He, Mart Simons, Gleb Fedoseev +7
Methoxymethanol (CH3OCH2OH, MM) has been identified through gas-phase signatures in both high- and low-mass star-forming regions. This molecule is expected to form upon hydrogen ad…
Astrochemistry with the Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS)
Jennifer B. Bergner, Yancy L. Shirley, Jes K. Jorgensen +14
Chemistry along the star- and planet-formation sequence regulates how prebiotic building blocks -- carriers of the elements CHNOPS -- are incorporated into nascent planetesimals an…
Expanding the submillimeter wave spectroscopy and astronomical search for thioacetamide (CH3CSNH2) in the ISM
A. Remijan, C. Xue, L. Margulès +12
Thioacetamide (CH3CSNH2) is the sulfur analog to acetamide (CH3CONH2) and it is a viable candidate to search for in astronomical environments specifically toward regions where othe…
Collisional excitation and non-LTE modelling of interstellar chiral propylene oxide
K. Dzenis, A. Faure, B. A. McGuire +7
The first set of theoretical cross sections for propylene oxide (CH3CHCH2O) colliding with cold He atoms has been obtained at the full quantum level using a high-accuracy potential…
Structure of the Source I disk in Orion-KL
Melvyn Wright, John Baly, Tomoya Hirota +6
This paper analyses images from 43 to 340 GHz to trace the structure of the Source I disk in Orion-KL with 12 AU resolution. The data reveal an almost edge-on disk with an ou…