Abstract
The interstellar medium (ISM) is rich with structure on varying size scales, reflecting its diverse energetics and dynamics. A step toward understanding this structure is to enhance the visibility of the structure on finer size scales. We present maps of a section of the Galactic plane filtered with the Median Normalized Spatial Filter (MNSF, a median smoothed map is divided into the original map), which emphasizes higher latitude emission relative to that of the plane itself (see also Waller et al., this volume, p. 194). The maps also illustrate the spatial correlations between the interstellar dust and the various gas phases: ionized, atomic, and molecular. The dust is represented by the IR emission maps of the IRAS survey, the ionized gas by the radio continuum maps at 1.4 GHz (Reich 1978, northern sky) and 2.3 GHz (Jonas & Baart 1995, southern sky), the atomic gas by surveys of the HI 21cm line emission (Heiles & Habing 1974, Weaver & Williams 1973, Cleary et al.1979, Kerr et al. 1986), and the molecular gas by surveys of the CO J =1 → 0 line emission (Dame et al. 1987).
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References
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Waller, W.F., Waller, W.H. (1997). Survey of Correlated FIR, HI, CO, and Radio-Continuum Emission Features in the Multi-Phase Milky Way. In: McLean, B.J., Golombek, D.A., Hayes, J.J.E., Payne, H.E. (eds) New Horizons from Multi-Wavelength Sky Surveys. International Astronomical Union/Union Astronomique Internationale, vol 179. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1485-8_43
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DOI: https://doi.org/10.1007/978-94-009-1485-8_43
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-4803-0
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