495 datasets found

Keywords: astronomical object identification

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  • XMM view of NGC 6231 open cluster

    We present the results of an X-ray campaign towards the young open cluster NGC 6231. The XMM-Newton observations, of a total duration of about 180 ks, reveals that NGC 6231 is...
  • Properties of X-ray sources in M31/M33

    We have obtained optical spectra for the 14 brightest optical counterparts of X-ray sources identified by XMM-Newton in the direction of M 31 and for 21 optical counterparts in...
  • Optical identification of ROSAT-FSC sources

    The Byurakan/Hamburg/ROSAT Catalogue (BHRC) of the optical identifications of X-ray sources is presented. The BHRC includes all 2791 sources from the ROSAT-FSC () with...
  • X-ray properties of NGC 300. I.

    X-ray properties of NGC 300 point sources, extracted from 66ks of XMM-Newton data taken in 2000 December and 2001 January. A total of 163 sources were detected in the energy...
  • Precise positions of RR Lyrae Stars with Vmax>12.5

    RR Lyrae stars are of great importance for investigations of Galactic structure. However, a complete compendium of all RR-Lyraes in the solar neighbourhood with accurate...
  • Interplanetary Scintillation Pushchino Survey II

    We present the results of optical identification of 248 interplanetary scintillating (IPS) radio sources from the Pushchino Survey (PS) in the area of 0.11sr with the center at...
  • 86GHz SiO maser survey in the Inner Galaxy

    We present a compilation and study of DENIS, 2MASS, ISOGAL, MSX and IRAS 1-25 microns photometry for a sample of 441 late-type stars in the inner Galaxy, which we previously...
  • Merged catalogue of reflection nebulae

    Several catalogues of reflection nebulae are merged to create a uniform catalogue of 913 objects. It contains revised coordinates, cross-identifications of nebulae and stars, as...
  • Outer Galaxy IRAS sources and 12CO emission

    We examined all of the IRAS sources within the Five College Radio Astronomy Observatory (FCRAO) Outer Galaxy Survey (OGS) region for associated ^12^CO emission (as accounted for...
  • RR Lyrae GCVS and TYC2 identifiers

    The Tycho-2 catalogue () provides astrometric and photometric data for the 2.5 million brightest stars in the sky. Therefore it can provide much larger samples than the...
  • Photometry in field of RX J004404.8+411820

    We propose the first association of an optical counterpart with a luminous supersoft X-ray source in M31, RX J0044.0+4118, observed with ROSAT in July 1991. The PSPC position is...
  • ROSAT-BSC galaxy identifications

    In a correlation study of the ROSAT All-Sky Survey Bright Source Catalogue (RASS-BSC, Cat. ) with the Catalogue of Principal Galaxies (PGC, Cat. ) 904 X-ray sources were found...
  • X-ray view of M33 after ROSAT

    Table2 contains the catalogue of X-ray sources in M 33 detected in ROSAT observations. X-ray properties and results from cross-correlations with other catalogues are listed. The...
  • High galactic latitude RASS X-ray sources. II.

    We present a summary of spectroscopic identifications of bright soft high galactic latitude X-ray sources from the ROSAT All-Sky Survey with total PSPC count rates...
  • High galactic latitude RASS X-ray sources

    We present a summary of spectroscopic identifications for a complete sample of bright soft high galactic latitude X-ray sources drawn from the ROSAT All-Sky Survey which have...
  • Carbon stars IR photometry

    We present JHKL photometry of a sample of 150 IRAS stars in the third and fourth galactic quadrant with |b|<2{deg} selected according to their IRAS colour...
  • Star-forming galaxies in the Coma Cluster

    In a field of 1deg radius centered in the Coma cluster of galaxies, UV ({lambda}=2000 A) observations with a 40-cm balloon-borne imaging telescope (FOCA) have provided a list of...
  • Catalog of CSC2.0-SDSS DR15 crossmatched sources

    We present a catalog of Chandra Source Catalog 2.0 sources cross-matched with SDSS DR15/16 counterparts. The crossmatch is performed with a Bayesian method developed by Budavari...
  • XXL Survey. DR2

    We present the second data release (DR2) of the XXL Survey, contextually with the appearance of a second A&A special issue dedicated to XXL. This intermediate release...
  • Allsky cross-matched 3XMMe catalogue

    ARCHES (Astronomical Resource Cross-matching for High Energy Studies) is a FP7-Space funded project whose aim is to provide the astronomical community with well-characterised...
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