GALACTIC MAGNETIC-FIELD STRENGTHS AND STAR-FORMATION PARAMETERS

Using statistics for small samples, I investigate the relation between the current strength of the galactic magnetic field B (as obtained by the best available method) and the star formation activity (as obtain ed by either the star formation rate [SFR] or the star formation effic iency [SFE]). From recently published homogeneous observational data i n a ''complete sample'' of nearby spiral galaxies, I looked for a rela tion between galactic magnetic field and star formation rate B approxi mately SFR(j), and I find j = 0.13 +/- 0.04 for 33 galaxies. I also lo oked for a relation between galactic magnetic field and star formation efficiency B approximately SFE(j), and I find j = 0.13 +/- 0.04 for 4 8 galaxies.