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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 ...

  • 2021-08-25
  • American Astronomical Society,2021

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:f43dda97-2c0c-4a26-b745-d90e85d801ea
  • https://research.chalmers.se/publication/525815URI
  • https://doi.org/10.3847/1538-3881/ac09f9DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • 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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Added entries (persons, corporate bodies, meetings, titles ...)

  • Srivastav, SatyamBanaras Hindu University (author)
  • Bhat, BratatiIndian Centre for Space Physics (author)
  • Mondal, Suman KumarIndian Centre for Space Physics (author)
  • Gorai, Prasanta,1991Chalmers tekniska högskola,Chalmers University of Technology,Indian Centre for Space Physics(Swepub:cth)prasanta (author)
  • Ghosh, RanaIndian Centre for Space Physics (author)
  • Shimonishi, TakashiNiigata University (author)
  • Chakrabarti, Sandip K.Indian Centre for Space Physics (author)
  • Sivaraman, BhalamuruganPhysical Research Laboratory (author)
  • Pathak, AmitBanaras Hindu University (author)
  • Nakatani, NaokiTokyo Metropolitan University,Hokkaido University (author)
  • Furuya, KenjiNational Astronomical Observatory of Japan,University of Tsukuba (author)
  • Das, AnkanIndian Centre for Space Physics (author)
  • Indian Centre for Space PhysicsBanaras Hindu University (creator_code:org_t)

Related titles

  • In:Astronomical Journal: American Astronomical Society162:31538-38810004-6256

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