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Metallicity distribution in GC
We present stellar metallicity measurements of more than 600 late-type stars in the central 10pc of the Galactic Centre. Together with our previously published KMOS data, this... -
Stellar variability in Galactic Centre
We report the detection of variable stars within a 11.5arcminx11.5arcmin region near the Galactic Centre that includes the Arches and Quintuplet clusters, as revealed by the... -
AGN luminosity fraction in merging galaxies
Galaxy mergers are key events in galaxy evolution, often causing massive starbursts and fueling active galactic nuclei (AGNs). In these highly dynamic systems, it is not yet... -
Binary fraction of young stars in ~0.4pc of the GC
We present the first estimate of the intrinsic binary fraction of young stars across the central ~0.4pc surrounding the supermassive black hole (SMBH) at the Milky Way Galactic... -
Stellar pop. in the central 0.5pc of the GC. III.
We measure the 3D kinematic structures of the young stars within the central 0.5pc of our Galactic Center using the 10m telescopes of the W. M. Keck Observatory over a time span... -
Binary stars from long-term obs. of the Gal. center
We present the results of the first systematic search for spectroscopic binaries within the central 2x3arcsec^2^ around the supermassive black hole at the center of the Milky... -
Star Formation History of the Milky Way's NSC
We report the first star formation history study of the Milky Ways nuclear star cluster (NSC), which includes observational constraints from a large sample of stellar... -
Massive YSOs in the GC. II. IRTF spectra
To study the demographics of interstellar ices in the Central Molecular Zone (CMZ) of the Milky Way, we obtain near-infrared spectra of 109 red point sources using NASA... -
NuSTAR hard X-ray survey of the Galactic Center. II.
We present the first survey results of hard X-ray point sources in the Galactic Center (GC) region by NuSTAR. We have discovered 70 hard (3-79 keV) X-ray point sources in a 0.6... -
Milky Way nuclear star cluster HKs photometry
The environment of Sagittarius A (Sgr A), the central black hole of the Milky Way, is the only place in the Universe where we can currently study the interaction between a... -
Galactic center CO rot-vib absorption lines
In the near- to mid-infrared wavelength domain, bright continuum sources in the central parsec of the Galactic center (GC) are subject to foreground absorption. These sources... -
Anomalous gamma-ray excess emissions
An anomalous gamma-ray excess emission has been found in the Fermi Large Area Telescope data covering the centre of the Galaxy. Several theories have been proposed for this... -
Bulge RR Lyrae VVVDR4 photometry
This study's objective was to exploit infrared VVV (VISTA Variables in the Via Lactea) photometry for high latitude RRab stars to establish an accurate Galactic Centre distance.... -
Element abundances study of Cepheids
Radial abundance gradients provide sound constraints for chemo-dynamical models of galaxies. Azimuthal variations of abundance ratios are solid diagnostics to understand their... -
{delta} Scuti variable stars with OGLE-IV
We have performed a frequency analysis of 10092 {delta} Scuti-type stars detected in the fourth phase of the Optical Gravitational Lensing Experiment towards the Galactic bulge,... -
Short-period binaries in the inner VVV bulge
Most of our knowledge of the structure of the Milky Way has come from the study of variable stars. Among these variables, mimicking the periodic variation of pulsating stars,... -
2D kinematics of massive stars
The presence of massive stars (MSs) in the region close to the Galactic Centre (GC) poses several questions about their origin. The harsh environment of the GC favours specific... -
Pressure components in the central HII regions
Supernovae (SNe) dominate the energy and momentum budget of stellar feedback, but the efficiency with which they couple to the interstellar medium (ISM) depends strongly on how... -
Quantifying maximum discs in galaxies
Maximum disc decompositions of rotation curves place a dynamical upper limit to the mass attributable to stars in galaxies. The precise definition of this term, however, can be... -
1.87 and 2.07um observations of 3 GC clusters
In order to investigate populations of massive stars in massive star clusters, we have constructed a near-infrared image set: narrow bands of 1.87 and 2.07{mu}m and the Ks...
