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Young open clusters are ideal laboratories to understand star formationprocess. We present deep UBV I and Halpha photometry for the young open clusterIC 1590 in the center of the H II region NGC 281. Early-type members areselected from UBV photometric diagrams, and low-mass pre-main sequence (PMS)members are identified by using Halpha photometry. In addition, the publishedX-ray source list and Gaia astrometric data are also used to isolate probablemembers. A total of 408 stars are selected as members. The mean reddeningobtained from early-type members is <E(B-V) = 0.40 +/- 0.06 (s.d.). We confirmthe abnormal extinction law for the intracluster medium. The distance modulusto the cluster determined from the zero-age main-sequence fitting method is12.3 +/- 0.2 mag (d = 2.88 +/- 0.28 kpc), which is consistent with the distanced = 2.70 ^+0.24 _-0.20 kpc from the recent Gaia parallaxes. We also estimatethe ages and masses of individual members by means of stellar evolutionarymodels. The mode of the age of PMS stars is about 0.8 Myr. The initial massfunction of IC 1590 is derived. It appears a steeper shape (Gamma = -1.49 +/-0.14) than that of the Salpeter/Kroupa initial mass function for the high massregime (m > 1 M_sun). The signature of mass segregation is detected from thedifference in the slopes of the initial mass functions for the inner (r < 2.'5)and outer region of this cluster. We finally discuss the star formation historyin NGC 281.

The Sejong Open Cluster Survey (SOS). VII. A Photometric Study of the Young Open Cluster IC 1590