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   Zars, Troy (March 2017, Current Biology)
2. Solid-gas reactions for nitroxyl (HNO) generation in the gas phase

   https://doi.org/10.1016/j.jinorgbio.2021.111535  

   Carrone, Guillermo; Mazzeo, Agostina; Marceca, Ernesto; Pellegrino, Juan; Suárez, Sebastián; Zarenkiewicz, Jessica; Toscano, John P.; Doctorovich, Fabio (October 2021, Journal of Inorganic Biochemistry)
3. Diverse gas composition controls the Moby-Dick gas hydrate system in the Gulf of Mexico

   https://doi.org/10.1130/G49310.1  

   Portnov, Alexey; Cook, A.E.; Vadakkepuliyambatta, S. (August 2021, Geology)

   Abstract In marine basins, gas hydrate systems are usually identified by a bottom simulating reflection (BSR) that parallels the seafloor and coincides with the base of the gas hydrate stability zone (GHSZ). We present a newly discovered gas hydrate system, Moby-Dick, located in the Ship Basin in the northern Gulf of Mexico. In the seismic data, we observe a channel-levee complex with a consistent phase reversal and a BSR extending over an area of ∼14.2 km2, strongly suggesting the presence of gas hydrate. In contrast to classical observations, the Moby-Dick BSR abnormally shoals 150 m toward the seafloor from west to east, which contradicts the northward-shallowing seafloor. We argue that the likely cause of the shoaling BSR is a gradually changing gas mix across the basin, with gas containing heavier hydrocarbons in the west transitioning to methane gas in the east. Our study indicates that such abnormal BSRs can be controlled by gradual changes in the gas mix influencing the shape of the GHSZ over kilometers on a basin scale. 

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4. The GBT Diffuse Ionized Gas Survey: Tracing the Diffuse Ionized Gas around the Giant Hii Region W43

   https://doi.org/10.3847/1538-4357/ab643e  

   Luisi, Matteo; Anderson, L. D.; Liu, Bin; Balser, Dana S.; Bania, T. M.; Wenger, Trey V.; Haffner, L. M. (February 2020, The Astrophysical Journal)
5. Cold Molecular Gas in Merger Remnants. II. The Properties of Dense Molecular Gas

   https://doi.org/10.3847/1538-4365/ac257a  

   Ueda, Junko; Iono, Daisuke; Yun, Min S; Michiyama, Tomonari; Watanabe, Yoshimasa; Snell, Ronald L; Rosa-González, Daniel; Saito, Toshiki; Vega, Olga; Yamashita, Takuji (December 2021, The Astrophysical Journal Supplement Series)

   Abstract We present the 3 mm wavelength spectra of 28 local galaxy merger remnants obtained with the Large Millimeter Telescope. Sixteen molecular lines from 14 different molecular species and isotopologues were identified, and 21 out of 28 sources were detected in one or more molecular lines. On average, the line ratios of the dense gas tracers, such as HCN (1–0) and HCO⁺(1–0), to¹³CO (1–0) are 3–4 times higher in ultra/luminous infrared galaxies (U/LIRGs) than in non-LIRGs in our sample. These high line ratios could be explained by the deficiency of¹³CO and high dense gas fractions suggested by high HCN (1–0)/¹²CO (1–0) ratios. We calculate the IR-to-HCN (1–0) luminosity ratio as a proxy of the dense gas star formation efficiency. There is no correlation between the IR/HCN ratio and the IR luminosity, while the IR/HCN ratio varies from source to source ((1.1–6.5) × 10³L_☉/(K km s⁻¹pc²)). Compared with the control sample, we find that the average IR/HCN ratio of the merger remnants is higher by a factor of 2–3 than those of the early/mid-stage mergers and nonmerging LIRGs, and it is comparable to that of the late-stage mergers. The IR-to-¹²CO (1–0) ratios show a similar trend to the IR/HCN ratios. These results suggest that star formation efficiency is enhanced by the merging process and maintained at high levels even after the final coalescence. The dynamical interactions and mergers could change the star formation mode and continue to impact the star formation properties of the gas in the postmerger phase. 

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