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SkyMapper Publication
Search for OB-Stars in the SkyMapper Southern Sky Survey
Golovatskaya, D. M., Glushkova, E. V. & Dambis, A. K., 2025, Moscow University Physics Bulletin, 80, S328 | View on ADS (2025MUPB...80S.328G)
Abstract
We use the reddening-free $$Q$$ index $$Q_{u-g,g-r}=(u-g)-2.099(g-r)$$ to photometrically identify OB-stars in the SkyMapper catalog to retrieve 474 509 candidate OB stars spanning more than half of the Galactic equator strip ($$|b|<5^{\circ}$$) with a gap in the longitude interval $$50<l<200$$. A comparison with previously identified OB-associations suggests the presence of potential new, hitherto unknown star groups in the southern sky. An analysis of the dependence of the height $$z$$ above the Galactic midplane on $$Q$$-index confirms that our candidate OB stars reside predominantly in the thin disk.
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