Observations of HDO in the High-Mass Star Forming Regions

• Autorzy: Kulczak-Jastrzębska M.
• Języki publikacji: EN

Abstrakty

EN

I present observations of the ground state (1_0,1-0_0,0) rotational transition of HDO at 464.925 GHz toward several high-mass star forming regions carried out with the Caltech Submillimeter Observatory. The spectra are modeled together with observations of higher-energy HDO transitions and submillimeter dust continuum fluxes present in the literature. Spherically symmetric radiative transfer model was used to derive the radial distribution of the HDO abundance in the target sources. The abundance profile is divided into an inner hot core region, with kinetic temperatures higher than 100 K, and a cold outer envelope. The derived HDO abundances relative to H₂ are: (0.6-3.5)×10^-8 and (0.1-25)×10^-11 in the hot inner region and the cold outer envelope, respectively.

Słowa kluczowe

EN

stars: pre-main sequence; ISM: molecules; ISM: lines and bands

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2016
• Tom: Vol. 66, No. 2
• Strony: 239--254
• Opis fizyczny: Bibliogr. 55 poz., rys., tab., wykr.

Twórcy

autor

Kulczak-Jastrzębska M.

• Astronomical Observatory of the Jagiellonian University, Orla 171, 30-244 Kraków, Poland

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).