368 datasets found

Keywords: apparent magnitude

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  • Radio properties of ROSAT sources

    A cross-identification of the southern-sky objects with the ROSAT All-Sky Survey (Cat. ) and Parkes-MIT-NRAO (PMN) Radio (5GHz) Survey (Cat. ) yields a list of 642 sources....
  • CPASJ1 position corrections

    Using the data observed with the Photoelectric Astrolabe Mark II (PA II) of the Beijing Astronomical Observatory during the period from Feb. 1992 to Oct. 1993 in San Juan of...
  • Physical data of the FK stars

    The precise positions and proper motions (J2000.0) of 1535 Basic FK5 (FK4) stars in FK5 system (Cat. ) have been used in the reduction of local vertical monitoring and catalog...
  • Southern radio sources catalog

    A list of 900 radio sources with positional accuracies better than 0.5" has been prepared from seventeen lists of radio source positions found in the literature. This...
  • FLAIR II spectroscopy of DENIS samples

    As a pilot survey for the forthcoming 6dF Galaxy Redshift Survey, spectroscopy of galaxies selected in the 1.2 micron J waveband with the DENIS imaging survey was performed at...
  • 2002-2007 PLANET microlensing events

    Most known extrasolar planets (exoplanets) have been discovered using the radial velocity or transit methods. Both are biased towards planets that are relatively close to their...
  • Catalog of galaxy structures based on the MRSS

    We present a catalogue of galaxy structures (groups and clusters) found in an area of 5000 square degrees in the southern hemisphere. The catalogue, which we call the PF...
  • M stars in Cepheus region

    The results of a spectral classification of 257 M stars observed in the Cepheus region are given. Their equatorial coordinates, photographic stellar magnitudes, and spectral...
  • FBS 10th list of red stars

    A 10th list of late-type M and C stars found on plates of the First Byurakan Spectral Sky Survey in the -11{deg}<{delta}<-7{deg} belt within area of about 1070{deg}^2^ is...
  • Coma cluster core's galaxies morphology study

    In this paper, we present the structural properties and morphology of galaxies in the central region of the Coma Cluster brighter than 19.5 mag in the F814W band from the...
  • Blazars study with ZTF DR6 and Roma-BZCAT

    We investigate the temporal and colour variability of 897 blazars, comprising 455 BL Lacertae objects (BL Lacs) and 442 Flat Spectrum Radio Quasars (FSRQs), selected from the...
  • New members of Cygnus OB2 from Gaia DR2

    Due to the high quality of Gaia DR2 stellar parallaxes and proper motions, we can study the Cygnus OB2 region up to G=17.5mag in circular region centred at...
  • Disentangling cataclysmic variables in Gaia DR2

    Cataclysmic Variables (CVs) are interacting binaries consisting of at least three components that control their colour and magnitude. Using Gaia we here investigate the...
  • TOI-222: a 34-d eclipsing binary

    We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single...
  • Gaia DR2 extremely low-mass WD candidates

    Extremely low-mass white dwarf stars (ELMs) are M<0.3M_{sun} helium-core white dwarfs born either as a result of a common-envelope phase or after a stable Roche lobe overflow...
  • Connecting galaxy structure and star formation

    In this work, we investigate the reason behind the increased occurrence of S0 galaxies in high-density environments. Our sample comprises of ~2500 spiral and ~2000 S0 galaxies...
  • HISS HI stacking tool applied to NIBLES spectra

    HI stacking has proven to be a highly effective tool to statistically analyse average HI properties for samples of galaxies which may or may not be directly detected. With the...
  • ALMA survey of the SCUBA-2 UKIDSS/UDS field

    We present the catalogue and basic properties of sources in AS2UDS, an 870-{mu}m continuum survey with the Atacama Large Millimetre/sub-millimetre Array (ALMA) of 716...
  • Variable AGN candidates catalog

    Identifying active galactic nuclei (AGNs) through their X-ray emission is efficient, but necessarily biased against X-ray-faint objects. We aim to characterize this bias by...
  • Runaway stellar groups in the Orion A cloud

    This work extends previous kinematic studies of young stars in the head of the Orion A cloud (OMC-1/2/3/4/5). It is based on large samples of infrared, optical, and X-ray...
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