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تسجيل مستخدم جديدMIRIS Pa{alpha} Galactic Plane Survey. I. Comparison with IPHAS H{alpha} in l = 96{deg}-116{deg}
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The Multipurpose InfraRed Imaging System (MIRIS) performed the MIRIS Pa{alpha} Galactic Plane Survey (MIPAPS), which covers the entire Galactic plane within the latitude range of -3{deg} < b < +3{deg} at Pa{alpha} (1.87 um). We present the first result of the MIPAPS data extracted from the longitude range of l = 96.5{deg}-116.3{deg}, and demonstrate the data quality and scientific potential of the data by comparing them with H{alpha} maps obtained from the INT Photometric H{alpha} Survey (IPHAS) data. We newly identify 90 H II region candidates in the WISE H II region catalog as definite H II regions by detecting the Pa{alpha} and/or H{alpha} recombination lines, out of which 53 H II regions are detected at Pa{alpha}. We also report the detection of additional 29 extended and 18 point-like sources at Pa{alpha}. We estimate the E(B-V) color excesses and the total Lyman continuum luminosities for H II regions by combining the MIPAPS Pa{alpha} and IPHAS H{alpha} fluxes. The E(B-V) values are found to be systematically lower than those estimated from point stars associated with H II regions. Utilizing the MIPAPS Pa{alpha} and IPHAS H{alpha} images, we obtain an E(B-V) map for the entire region of the H II region Sh2-131 with an angular size of ~2.5{deg}. The E(B-V) map shows not only numerous high-extinction filamentary features but also negative E(B-V) regions, indicating H{alpha} excess. The H{alpha} excess and the systematic underestimation of E(B-V) are attributed to light scattered by dust.
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