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  1. No Access

    Chapter and Conference Paper

    A Microwave Jet inside the Rosette Nebula?

    New spectral measurements of the well known HII region Rosette Nebula have been performed with the 32m Medicina (Italy) VLBI single dish [Beamwidth: 5’, beam efficiency: 83%; Tsys ∼ 45K; 1024 channels autocor-rel...

    A. P. Tsivilev, S. Cortiglioni, M. R. Cioni, M. Orsini… in The Non-Slee** Universe (1999)

  2. No Access

    Chapter and Conference Paper

    New measurements of the 4He abundance in galactic HII regions

    Preliminary results of the 4He relative abundance determination from Radio Recombination Lines observations at different frequencies in the Orion, Rosette and W3 HII regions are presented. The Orion HII region ha...

    M. R. Cioni, S. Cortiglioni, M. Orsini… in The Local Bubble and Beyond Lyman-Spitzer-… (1998)