Kennicutt, Robert CCalzetti, DanielaWalter, FabianHelou, GeorgeHollenbach, David J.Armus, LeeBendo, George JDale, Daniel ADraine, Bruce TEngelbracht, Charles WGordon, Karl DPrescott, Moire K. M.Regan, Michael W.Thornley, Michele DBot, CarolineBrinks, Eliasde Blok, Willemde Mello, DuliaMeyer, MartinMoustakas, JohnMurphy, Eric JSheth, KartikSmith, John-David T2015-12-070004-637Xhttp://hdl.handle.net/1885/19904We have studied the relationship between the star formation rate (SFR), surface density, and gas surface density in the spiral galaxy M51a (NGC 5194), using multiwavelength data obtained as part of the Spitzer Infrared Nearby Galaxies Survey (SINGS ). WeKeywords: Galaxies: evolution; Galaxies: individual (M51a, NGC 5194); Galaxies: ISM; H II regions; Infrared: galaxies; Stars: formation200710.1086/5223002015-12-07