The spiral structure in the solar neighborhood is an important issue in astronomy. In the past
few years, there has been significant progress in observation. The distances for a large …

Aims. In this paper we derive the structure of the Galactic stellar warp and flare. Methods. We
use 2MASS red clump and red giant stars, selected at mean and fixed heliocentric distances …

The first catalog of the RR Lyrae stars (RRLSs) in the Galactic halo by the Quasar Equatorial
Survey Team (QUEST) has been searched for significant overdensities that may be debris …

We present the first Herschel PACS and SPIRE photometric observations in a portion of the
outer Galaxy (216 fdg 5≲ ℓ≲ 225 fdg 5 and− 2≲ b≲ 0) as a part of the Hi-GAL survey. The …

With the discovery of the Sagittarius dwarf spheroidal, a galaxy caught in the process of
merging with the Milky Way, the hunt for other such accretion events has become a very …

We combine optical and radio observations to trace the spiral structure in the third quadrant
of the Milky Way. The optical observations consist of a large sample of young open clusters …

We present a comprehensive multiwavelength study of the star-forming region NGC 1893 to
explore the effects of massive stars on low-mass star formation. Using near-infrared colours …

New uvby–β data are provided for 442 high-velocity and metal-poor stars; 90 of these stars
have been observed previously by us, and 352 are new. When combined with our previous …

Context. Asteroseismology is one of the few methods to derive ages of individual stars due
to the high precision of their observations. Isochrone fitting is a powerful alternative method …

In this work, we investigate the properties of 18 embedded clusters (ECs). The sample
includes 11 previously known clusters and we report the discovery of seven ECs on WISE …