Search: id:"swepub:oai:research.chalmers.se:f43dda97-2c0c-4a26-b745-d90e85d801ea" >
Chemical Complexity...
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Sil, MilanIndian Centre for Space Physics
(author)
Chemical Complexity of Phosphorous-bearing Species in Various Regions of the Interstellar Medium
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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2021-08-25
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American Astronomical Society,2021
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LIBRIS-ID:oai:research.chalmers.se:f43dda97-2c0c-4a26-b745-d90e85d801ea
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https://research.chalmers.se/publication/525815URI
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https://doi.org/10.3847/1538-3881/ac09f9DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Phosphorus-related species are not known to be as omnipresent in space as hydrogen, carbon, nitrogen, oxygen, and sulfur-bearing species. Astronomers spotted very few P-bearing molecules in the interstellar medium and circumstellar envelopes. Limited discovery of the P-bearing species imposes severe constraints in modeling the P-chemistry. In this paper, we carry out extensive chemical models to follow the fate of P-bearing species in diffuse clouds, photon-dominated or photodissociation regions (PDRs), and hot cores/corinos. We notice a curious correlation between the abundances of PO and PN and atomic nitrogen. Since N atoms are more abundant in diffuse clouds and PDRs than in the hot core/corino region, PO/PN reflects <1 in diffuse clouds, MUCH LESS-THAN1 in PDRs, and >1 in the late warm-up evolutionary stage of the hot core/corino regions. During the end of the post-warm-up stage, we obtain PO/PN > 1 for hot core and <1 for its low-mass analog. We employ a radiative transfer model to investigate the transitions of some of the P-bearing species in diffuse cloud and hot core regions and estimate the line profiles. Our study estimates the required integration time to observe these transitions with ground-based and space-based telescopes. We also carry out quantum chemical computation of the infrared features of PH3, along with various impurities. We notice that SO2 overlaps with the PH3 bending-scissoring modes around similar to 1000-1100 cm(-1). We also find that the presence of CO2 can strongly influence the intensity of the stretching modes around similar to 2400 cm(-1) of PH3.
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Srivastav, SatyamBanaras Hindu University
(author)
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Bhat, BratatiIndian Centre for Space Physics
(author)
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Mondal, Suman KumarIndian Centre for Space Physics
(author)
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Gorai, Prasanta,1991Chalmers tekniska högskola,Chalmers University of Technology,Indian Centre for Space Physics(Swepub:cth)prasanta
(author)
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Ghosh, RanaIndian Centre for Space Physics
(author)
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Shimonishi, TakashiNiigata University
(author)
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Chakrabarti, Sandip K.Indian Centre for Space Physics
(author)
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Sivaraman, BhalamuruganPhysical Research Laboratory
(author)
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Pathak, AmitBanaras Hindu University
(author)
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Nakatani, NaokiTokyo Metropolitan University,Hokkaido University
(author)
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Furuya, KenjiNational Astronomical Observatory of Japan,University of Tsukuba
(author)
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Das, AnkanIndian Centre for Space Physics
(author)
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Indian Centre for Space PhysicsBanaras Hindu University
(creator_code:org_t)
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In:Astronomical Journal: American Astronomical Society162:31538-38810004-6256
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Sil, Milan
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