hco+ and radio continuum emission from the star forming region g75.78+0.34
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ID: 150479
2014
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Abstract
We present 1.3 and 3.6 cm radio continuum images and a HCO+ spectrum of the massive star forming region G75.78+0.34 obtained with the Very Large Array (VLA) and with the Berkley Illinois Maryland Association (BIMA) interferometer. Three structures were detected in the continuum emission: one associated with the well-known cometary H ɪɪ region, plus two more compact structures located at 6′′ east and at 2′′ south of cometary H ɪɪ region. Using the total flux and intensity peak we estimated an electron density of ≈1.5 × 104 cm−3, an emission measure of ≈6 × 107 cm−6 pc, a mass of ionized gas of ≈3 M⊙, and a diameter of 0.05 pc for the cometary H ɪɪ region, being typical values for an ultracompact H ɪɪ region. The HCO+ emission probably originates from the molecular outflows previously observed in HCN and CO.
| Reference Key |
riffel2014advanceshco+
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|---|---|
| Authors | ;Rogemar A. Riffel;Everton Lüdke |
| Journal | chemistry - a european journal |
| Year | 2014 |
| DOI |
10.1155/2014/192513
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| URL | |
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