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The LDN 1172/1174 cloud complex in the Cepheus Flare region presents ahub-filament structure with the reflection nebula, NGC 7023, illuminated by aHerbig Be star, HD 200775, which consists of the hub with a $\sim$5 pc longnarrow filament attached to it. Formation of a sparse cluster of low- andintermediate-mass stars is presently taking place in the hub. The aim of thiswork is to map the magnetic field geometry of LDN 1172/1174 to understand therole played by the field lines in the formation of the molecular cloud. We madeR-band polarization measurements of 249 stars projected on the entire LDN1172/1174 cloud complex to map the geometry of the magnetic field of thisregion. The magnetic field geometry constructed from our R-band polarizationmeasurements is found to be parallel to the elongated structure inferred fromthe column density distribution of the cloud produced using the Herschelimages. Our R-band polarization measurements are found to be in good agreementwith those obtained from Planck. There is evidence of a possible distortion ofthe magnetic fields toward the northwestern part of the cloud by HD 200775. Themagnetic field strength is estimated as $\sim$30 $\mu$G. The estimated starformation rate (SFR)/mass of 2.0$\pm$1.3 \%Myr$^{-1}$ and 0.4$\pm$0.3\%Myr$^{-1}$ for LDN 1172/1174 and the neighboring cloud complex, LDN1147/1158, respectively, are found to be consistent with the mean SFR/massfound for the clouds with magnetic field orientations parallel andperpendicular to their elongated structures, respectively. These resultssupport earlier findings that the clouds with magnetic field lines parallel totheir long axes seem to have higher SFRs compared to those with the magneticfield orientation perpendicular to the cloud elongation.

Tracing the magnetic field morphology of the LDN 1172/1174 cloud complex