We present the detection of Cepheids in the barred spiral galaxy NGC 1313 , using the Wide Field and Planetary Camera 2 ( WFPC2 ) on Hubble Space Telescope .
Twenty B ( F450W ) and V ( F555W ) epochs of observations spanning over three weeks were obtained , on which the profile-fitting photometry of all stars in the monitored field was performed using the package HSTphot .
A sample of 26 variable stars have been identified to be Cepheids , with periods between 3 and 15 days .
Based on the derived period-luminosity ( PL ) relations in B - and V -bands , we obtain an extinction-corrected distance modulus of \bm { \mu _ { NGC 1313 } = 28.32 \pm 0.10 { ( random ) } \pm 0.06 { ( systematic ) } } , employing respectively the Large Magellanic Cloud ( LMC ) as distance zero point calibrators .
The above moduli correspond to a distance of 4.61 \bm { \pm 0.21 } ( random ) \bm { \pm 0.13 } ( systematic ) Mpc , consistent with previous measurements reported in the literature within uncertainties .
In addition , the reddening to NGC 1313 is found to be small .