760 datasets found

The detection and characterization of habitable planets around nearby stars persist as some of the foremost objectives in contemporary astrophysics. This work investigates the...

The Galactic Be star binary MWC 656 was long considered the only known Be star +black hole (BH) system, making it a critical benchmark for models of massive binary evolution and...

Type Ibn supernovae (SNe) are characterized by narrow helium (He i) lines from photons produced by the unshocked circumstellar material (CSM). About 80 SNe Ibn have been...

This table records high-level information for each Swift observation and provides access to the data archive. Each record is associated with a single observation that contains...

Although the population of quasars evolved significantly in the past, the properties of quasars as physical objects are supposed to remain almost unchanged, which makes quasars...

We study the dust attenuation curves of 230,000 individual galaxies in the local universe, ranging from quiescent to intensely star-forming systems, using GALEX, SDSS, and WISE...

We present high-resolution rotation curves and mass models of 26 dwarf galaxies from "Local Irregulars That Trace Luminosity Extremes, The H_I_ Nearby Galaxy Survey" (LITTLE...

The Faint Object Camera (FOC) on board the Hubble Space Telescope (HST) acquired high-resolution spatially resolved polarimetric images of nearby active galactic nuclei (AGNs)...

We have compiled a list of blue lurker (BL) candidates in open clusters using the available rotation catalogs. Blue lurkers are rejuvenated main-sequence stars hidden among...

The escape fraction of Lyman continuum photons fesc(LyC) is the last key unknown in our understanding of cosmic reionization. Directly estimating the escape fraction (fesc) of...

We report discoveries of 165 new quasar Ca II absorbers from the Sloan Digital Sky Survey (SDSS) Data Releases 7 and 12. Our CA II rest-frame equivalent width distribution...

Interactions and mergers possibly enhance the star formation in dwarf galaxies in a group environment. We aim to study star-forming regions and the spectral energy distribution...

We present the statistical properties of Ly{alpha} emission in 586 galaxies at z=4.5-14.2, observed by multiple JWST/NIRSpec spectroscopy projects, including the JADES, GLASS,...

The nearby dwarf galaxy POX 52 at z=0.021 hosts an active galactic nucleus (AGN) with a black hole (BH) mass of M_BH_~10^5-6^M_{sun} and an Eddington ratio of ~0.1-1. This...

We present size measurements of 78 high-redshift (z => 5.5) galaxy candidates from the Reionization Lensing Cluster Survey (RELICS). These distant galaxies are well resolved...

We present a photometric and spectroscopic analysis of the Type Ibn supernova (SN) 2024acyl. It rises to an absolute magnitude peak of M_o=-17.58+/-0.15mag in 10.6 days, and...

The chemical evolution of neutron capture elements in the Milky Way is still a matter of debate. Although more and more studies investigate their chemical behaviour, there is...

By observing 25 massive galaxy clusters with HST's new panchromatic imaging capabilities (Wide-field Camera 3, WFC3, and the Advanced Camera for Surveys, ACS), CLASH will...

The AGN STORM 2 campaign is a large, multiwavelength reverberation mapping project designed to trace out the structure of Mrk 817 from the inner accretion disk to the broad...

Type Ia supernovae (SNe Ia) are among the most precise cosmological distance indicators used to study the expansion history of the Universe. The vast increase of SN Ia data due...