We investigate infrared properties of OGLE4 Mira variables in our Galaxy. For each object, we cross-identify the AllWISE, 2MASS, Gaia, and IRAS counterparts. We present various IR two-color diagrams (2CDs) and period-magnitude and period-color relations for the Mira variables. Generally, the Mira variables with longer periods are brighter in the IR fluxes and redder in the IR colors. In this work, we also revise and update the previous catalog of AGB stars in our Galaxy using the new sample of OGLE4 Mira variables. Now, we present a new catalog of 74,093 (64,609 O-rich and 9,484 C-rich) AGB stars in our Galaxy. A group of 23,314 (19,196 O-rich and 4,118 C-rich) AGB stars are identified based on the IRAS PSC and another group of 50,779 (45,413 O-rich and 5,366 C-rich) AGB stars are identified based on the AllWISE source catalog. For all of the AGB stars, we cross-identify the IRAS, AKARI, MSX, AllWISE, 2MASS, OGLE4, Gaia, and AAVSO counterparts and present various infrared 2CDs. Comparing the observations with the theory, we find that basic theoretical dust shell models can account for the IR observations fairly well for most of the AGB stars.

Abstract
1. INTRODUCTION
2. OGLE4 MIRA VARIABLES IN OUR GALAXY
    2.1. Infrared Photometric Data
    2.2. Cross-Matches
    2.3. Color Indices
    2.4. The 2MASS-WISE 2CD
    2.5. Gaia RP Spectra
    2.6. Period-Magnitude and Period-Color Relations
    2.7. IRAS PSC Sources
3. A NEW SAMPLE OF AGB STARS
    3.1. AGB Stars Based on the IRAS PSC
    3.2. AGB Stars Based on the AllWISE Source Catalog
4. IR 2CDS AND DISCUSSION
    4.1. Theoretical Dust Shell Models
    4.2. Comparison between Theory and Observations
    4.3. Statistical Properties of AGB Stars
5. SUMMARY
ACKNOWLEDGMENTS
REFERENCES

• Kyung-Won Suh(Department of Astronomy and Space Science, Chungbuk National University)