Results 101 to 110 of about 35,607 (205)

Infrared Spectra of Solid HCN Embedded in Various Molecular Environments for Comparison with the Data Obtained with JWST

The Astrophysical Journal Letters
Hydrogen cyanide (HCN) molecules serve as an important tracer for the chemical evolution of elemental nitrogen in the regions of star and planet formation.
Maksim Ozhiganov, Mikhail Medvedev, Varvara Karteyeva, Ruslan Nakibov, Uliana Sapunova, Vadim Krushinsky, Ksenia Stepanova, Anastasia Tryastsina, Aleksandr Gorkovenko, Gleb Fedoseev, Anton Vasyunin   +10 more
doaj   +1 more source

Binding Energies of Interstellar Complex Organic Molecules on Water Ice Surfaces: A Quantum Chemical Investigation

The Astrophysical Journal
Interstellar dust grains are enveloped by ices of frozen molecules in cold, dense regions of the interstellar medium (ISM), which are also observed in the gas phase. Whether a species is in the solid or gaseous state is governed by its binding energy (BE)
Harjasnoor Kakkar, Berta Martínez-Bachs, Cecilia Ceccarelli, Piero Ugliengo, Albert Rimola   +4 more
doaj   +1 more source

Fingerprinting fragments of fragile interstellar molecules: dissociation chemistry of pyridine and benzonitrile revealed by infrared spectroscopy and theory.

Faraday Discuss, 2023
Rap DB, Simon A, Steenbakkers K, Schrauwen JGM, Redlich B, Brünken S.   +5 more
europepmc   +1 more source

Spectroscopic Identification and Photochemistry of Astrochemically Relevant Phosphorus-bearing Molecules [O, C, N, P] and [2O, C, N, P]

The Astrophysical Journal
Diatomic molecules phosphorus monoxide (PO) and phosphorus mononitride (PN) are the main reservoirs of gas-phase phosphorus in interstellar and circumstellar environments, indicating the possibility of forming new phosphorus-bearing molecules through ...
Bifeng Zhu, Minghao Wang, Junjie Jiang, Ningjing Jiang, Jingling Hong, Guntram Rauhut, Guanjun Wang, Weixing Li, Xiaoqing Zeng   +8 more
doaj   +1 more source

On the Origin of Infrared Bands Attributed to Tryptophan in Spitzer Observations of IC 348

The Astrophysical Journal Letters
Infrared emission features toward interstellar gas of the IC 348 star cluster in Perseus have been recently proposed to originate from the amino acid tryptophan.
Aditya Dhariwal, Thomas H. Speak, Linshan Zeng, Amirhossein Rashidi, Brendan Moore, Olivier Berné, Anthony J. Remijan, Ilane Schroetter, Brett A. McGuire, Víctor M. Rivilla, Arnaud Belloche, Jes K. Jørgensen, Pavle Djuricanin, Takamasa Momose, Ilsa R. Cooke   +14 more
doaj   +1 more source

The ALCHEMI Atlas: Principal Component Analysis Reveals Starburst Evolution in NGC 253

The Astrophysical Journal Supplement Series
Molecular lines are powerful diagnostics of the physical and chemical properties of the interstellar medium (ISM). These ISM properties, which affect future star formation, are expected to differ in starburst galaxies from those of more quiescent ...
Nanase Harada, David S. Meier, Sergio Martín, Sebastien Muller, Kazushi Sakamoto, Toshiki Saito, Mark D. Gorski, Christian Henkel, Kunihiko Tanaka, Jeffrey G. Mangum, Susanne Aalto, Rebeca Aladro, Mathilde Bouvier, Laura Colzi, Kimberly L. Emig, Rubén Herrero-Illana, Ko-Yun Huang, Kotaro Kohno, Sabine König, Kouichiro Nakanishi, Yuri Nishimura, Shuro Takano, Víctor M. Rivilla, Serena Viti, Yoshimasa Watanabe, Paul P. van der Werf, Yuki Yoshimura   +26 more
doaj   +1 more source

Photochemistry of interstellar molecules [PDF]

The photochemistry of two diatomic and eight polyatomic molecules is discussed quantitatively. For an interstellar molecule, the lifetime against photodecomposition depends upon the absorption cross section, the quantum yield or probability of ...
Stief, L. J.
core   +1 more source

Infrared intensities and molar refraction of amorphous dimethyl carbonate - comparisons to four interstellar molecules. [PDF]

Phys Chem Chem Phys, 2019
Hudson RL, Coleman FM.
europepmc   +1 more source

5 cm OH Masers in Northern Star Formation Regions

The Astronomical Journal
We present a 6.0 GHz excited-state OH maser survey toward 155 northern star formation regions utilizing the Shanghai Tianma Radio Telescope. In total, we detect 44 6.0 GHz OH masers, 8 of which are new detections (one at 6016 MHz, two at 6030 MHz, and ...
Hai-Hua Qiao, Xu-Jia Ouyang, Zhi-Qiang Shen, Shari L. Breen, Kai Yang, Xi Chen, Juan Li   +6 more
doaj   +1 more source

On the Interpretation of Mid-infrared Absorption Lines of Gas-phase H2O as Observed by JWST/MIRI

The Astrophysical Journal Supplement Series
Rovibrational absorption lines of H _2 O in the 5–8 μ m wavelength range selectively probe gas against the mid-infrared continuum-emitting background of the inner regions of young stellar objects and active galactic nuclei and deliver important ...
Jialu Li, Adwin Boogert, Alexander G. G. M. Tielens   +2 more
doaj   +1 more source