Galaxy photometry at millimetric wavelengths

Details Galaxy photometry at millimetric wavelengths Galaxy photometry at millimetric wavelengths

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260...89a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 89-96.

Astronomy and Astrophysics

Astrophysics

13

Astronomical Photometry, Brightness Distribution, Galactic Radiation, Spiral Galaxies, Microwave Emission, Millimeter Waves

Scientific paper

We report on new observations of normal galaxies at millimeter wavelengths, performed with the aim of reducing the substantial discrepancies (by factors of one order of magnitude or more) found among various published average broad-band spectra of galaxies in the far-IR to mm spectral domain. We show that uncertainties in the estimate of beam-aperture corrections still prevent a resolution of the problem and demand further observations of the mm surface brightness distribution of spiral galaxies. This investigation has implications not only for the total amount of dust in galaxies and its spatial distribution, but also concerning the galaxy contribution to the cosmic microwave background's spectral intensity and fluctuations.

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