114 datasets found

The chromospheric emission estimated in the core of different lines, such as CaII H & K, Na D1 and D2, and Ha, is not always correlated between lines. In particular, the...

The symbiotic X-ray binary Sct X-1 was suggested to be the first known neutron star accreting from a red supergiant companion. Although known for nearly 50yr, detailed...

We present [K/Fe] abundance ratios for a sample of 450 stars in {omega} Centauri, using high-resolution spectra acquired with the multiobject spectrograph FLAMES@VLT. Abundances...

Understanding the connection between nuclear activity and galaxy environment remains critical in constraining models of galaxy evolution. By exploiting the extensive cataloged...

We present a well-designed sample of more than 1000 type 1 quasars at 3.5<z<5 and derive UV quasar luminosity functions (QLFs) in this redshift range. These quasars were...

We report the new detection of ^7^BeII in the ultraviolet spectra of V5669 Sgr during its early decline phase (+24 and +28d). We identified three blueshifted absorption systems...

We report the detection and follow-up of a superstellar flare GWAC181229A with an amplitude of {Delta}R~9.5mag on an M9-type star by SVOM/GWAC and the dedicated follow-up...

We report the discovery of a new transition type Wolf-Rayet (W-R) WN/C star in the Galaxy. According to its coordinates RAJ2000=18:51:39.7,DEJ2000=-05:34:51.1, and the distance...

Asteroseismology, a powerful approach for obtaining internal structure and stellar properties, requires surface temperature and chemical composition information to determine...

Planets with orbital periods shorter than 1 day are rare and have formation histories that are not completely understood. Small (R_p < 2 R_earth) ultra-short-period (USP)...

The Gaia mission is delivering a large number of astrometric orbits for binary stars. By combining these with spectroscopic orbits for systems with two observable spectra (SB2),...

Based on the rapid advances in additive manufacturing, micro-patterned heterostructures of soft materials have become available that need to be characterized down to the...

In order to be able to investigate the chemical history of the entire MilkyWay, it is imperative to also study the dust-obscured regions, where most of the mass lies, in detail....

M-dwarf stars are the most common of potential exoplanet host stars in the Galaxy. It is therefore very important to understand planetary systems orbiting such stars and to...

Transmission spectroscopy is one of the most powerful techniques used to characterize transiting exoplanets, since it allows for the abundance of the atomic and molecular...

The intrinsic variability due to the magnetic activity of young active stars is one of the main challenges in detecting and characterising exoplanets. The stellar activity is...

There are significant amounts of H_2_ in the Milky Way. Due to its symmetry H_2_ does not radiate at radio frequencies. CO is thought to be a tracer for H_2_, however CO is...

This database contains all the data collected by the EM2C laboratory on the plasma-assisted flame in the so-called 'PASTEC conditions' of the Mini-PAC burner. All results are...

OB-stars multi-epoch optical spectra from FIES@NOT and Hermes@Mecator at ORM/La Palma

This service provides access to the spectral library in support of the CRISM experiment on Mars Reconnaissance Orbiter. This is a redesigned version of the library once...