61 datasets found

Keywords: galactic center

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  • Accurate OH maser positions. II. The GC.

    We present high spatial resolution observations of ground-state OH masers achieved using the Australia Telescope Compact Array (ATCA). These observations were conducted toward...
  • 1482 Gaussian clumps in the Central Molecular Zone

    We carry out a systematic study of the density structure of gas in the Central Molecular Zone (CMZ) in the Galactic center by extracting clumps from the APEX Telescope Large...
  • Gaia DR2 confirmed new nearby open clusters

    The publication of the Gaia Data Release 2 (Gaia DR2) opens a new era in astronomy. It includes precise astrometric data (positions, proper motions, and parallaxes) for more...
  • 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...
  • 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...
  • 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...
  • Microlensing event rate in the GC. I. UKIRT obs.

    To overcome the high optical extinction, near-infrared (NIR) observations are needed for probing the microlensing events toward the Galactic center. The 2015-2019 UKIRT...
  • High-velocity dispersion compact clouds in the CMZ

    This study developed an automated identification procedure for compact clouds with broad velocity widths in the spectral-line data cubes of highly crowded regions. The procedure...
  • Galactic Plane Infrared Polarization Survey, DR4

    The Galactic Plane Infrared Polarization Survey (GPIPS) seeks to characterize the magnetic field in the dusty Galactic disk using near-infrared stellar polarimetry. All GPIPS...
  • VLA observations of the Central Molecular Zone

    We present new observations of the C-band continuum emission and masers to assess high-mass (>8M_{sun}) star formation at early evolutionary phases in the inner 200pc of the...
  • Ultradeep catalog of X-ray point sources in the GC

    We present an updated catalog of X-ray point sources in the inner 500" (~20pc) of the Galactic center (GC), where the nuclear star cluster (NSC) stands, based on a total of...
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