7,990 datasets found

We conducted a homogeneous chemical analysis of pre-main sequence stars with effective temperatures ranging from ~3000K to ~5500K in eight nearby star-forming regions (SFRs):...

Roughly spherical envelopes around asymptotic giant branch (AGB) stars transform into the highly-asymmetric morphologies observed in planetary nebulae. The complex processes...

We report the discovery of 31 new open clusters (OCs) identified in Gaia DR3 data through a systematic search over 220 adjacent 1{deg}*1{deg} fields towards the Galactic...

The Atacama Large Millimetre/submillimetre Array (ALMA) is the world's most advanced radio interferometric facility, producing science data with an average rate of about 1 TB...

The Gaia DR3 has provided a large sample of more than 6.6 million quasar candidates with high completeness but low purity. Previous work on the CatNorth quasar candidate catalog...

We present a catalog of 8440 candidate very metal-poor (VMP; [Fe/H]<=-2.0) main-sequence turn-off (MSTO) and red giant stars in the Milky Way, identified from low-resolution...

The formation and evolution of ring structures in galaxies are crucial for understanding the nature and distribution of dark matter, galactic interactions, and the internal...

The Transiting Exoplanet Survey Satellite (TESS) has surveyed nearly the entire sky in full-frame image mode with a time resolution of 200s to 30 minutes and a temporal baseline...

We present a high-precision radial velocity (RV) survey of 719 FGKM stars, which host 164 known exoplanets and 14 newly discovered or revised exoplanets and substellar...

Essential information about the formation and evolution of planetary systems can be found in their architectures-in particular, in stellar obliquity ({psi})-as they serve as a...

We present new or updated angular diameters, physical radii, and effective temperatures for 145 stars from the Navy Precision Optical Interferometer (NPOI) data archive. We used...

Our understanding of dust in the diffuse interstellar medium remains incomplete with regard to the structure, composition, size distribution, and alignment properties of its...

The narrow-line Seyfert 1 (NLSy1) galaxy, IRAS 17020+4544, is one of the few known sources exhibiting a multi-phase outflow in the highly ionized and molecular phases consistent...

We aim to refine the fundamental parameters of the TOI-2141 planetary system, which includes a transiting sub-Neptune orbiting a Sun-like star in a relatively long orbit of...

The study of stellar multiplicity offers important constraints on the structure of the Galaxy as well as stellar and planet formation and evolution. Focusing on the most...

To identify long-period variable (LPV) stars in IC 10-the nearest starburst galaxy of the Local Group-we conducted an optical monitoring survey using the 2.5m Isaac Newton...

We identified blue straggler stars (BSSs) in 53 open clusters utilizing data from Gaia DR3. Most of these clusters are situated in the outer regions of the Galactic disk,...

Quasars at the redshift frontier (z>7.0) are fundamental probes of black hole growth and evolution but notoriously difficult to identify. At these redshifts, machine...

We investigate the origin of intervening cool MgII absorption detected in the spectra of background quasars and the nature of associated galaxies across a broad redshift range...

Interior models predict that stellar envelopes change from convective to radiative during the pre-main-sequence (pre-MS) evolution of intermediate-mass stars. Although the...