RASSASASPV ivo://nasa.heasarc/rassasaspv NASA/GSFC HEASARC Kiraga 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source Photometric data from the All-Sky Automatic Survey (ASAS) - South (Declination less than 29 degrees) Survey have been used for the identification of bright stars located near the sources from the ROSAT All Sky Survey Bright Source Catalog (RASSBSC). In total, 6,028 stars brighter than 12.5 magnitude in the I- or the V-bands have been selected and analyzed for periodicity. Altogether, 2,302 variable stars have been found with periods ranging from 0.137 days to 193 days. Most of these stars have X-ray emission of coronal origin, but there are a few cataclysmic binaries and early type stars with colliding winds. Whenever it was possible, the authors collected data available in the literature so as to verify the periods and to classify variable objects. The catalog includes 1,936 stars (1,233 new) considered to be variable due to presence of spots (rotationally variable), 127 detached eclipsing binary stars (33 new), 124 contact binaries (11 new), 96 eclipsing stars with deformed components (19 new), 13 ellipsoidal variables (4 new), 5 miscellaneous variables and one pulsating RR Lyr type star (blended with an eclipsing binary). More than 70% of the new variable stars have amplitudes smaller than 0.1 magnitudes, but for the star ASAS 063656-0521.0 the authors have found the largest known amplitude of brightness variations due to the presence of spots (up to Delta V = 0.8 magnitudes). This table was created by the HEASARC in May 2018, based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/AcA/62/67">CDS Catalog J/AcA/62/67</a> files catalog.dat and remarks.dat. This is a service provided by NASA HEASARC . 2012AcA....62...67K https://heasarc.gsfc.nasa.gov/W3Browse/all/rassasaspv.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=rassasaspv& GET text/xml 180 99999 true 69.15 -87.4633333333333 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=rassasaspv GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_rassasaspv&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0333333333333333 Optical X-ray public rassasaspv All-Sky Automatic Survey (ASAS) Photometry of ROSAT All-Sky Surv asas_name ASAS Source Designation (ASAS Jhhmmss+ddmm.s) meta.id char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable name Simbad Designation meta.id;meta.main char nullable off_set Distance Between the Formal ASAS Position and Related Object from Simbad arcsec pos.angDistance double nullable spect_type Simbad MK Spectral Type src.spType char nullable asas_vmag ASAS Mean Magnitude in the V-Band mag phot.mag;em.opt.V double nullable asas_vmag_dispersion ASAS Dispersion of the V-Band Measurements mag stat.error;phot.mag;em.opt.V double nullable count_rate ROSAT Bright Source Catalog (IX/10) Count Rate (0.1-2.0keV) ct/s phot.count;em.X-ray.soft double nullable count_rate_error Error in ROSAT Bright Source Catalog Count Rate ct/s stat.error;phot.count;em.X-ray.soft double nullable log_lx_lbol Logarithm of the X-Ray to the Bolometric Flux Ratio phys.luminosity;em.X-ray.soft;em;arith.ratio double nullable log_lx_lbol_error Error in Logarithm of the X-Ray to the Bolometric Flux Ratio stat.error;phys.luminosity;em.X-ray.soft;em;arith.ratio double nullable bmag Simbad B Magnitude mag phot.mag;em.opt.B double nullable class Browse Object Classification src.class short nullable pm_ra Simbad Proper Motion in Right Ascension mas/yr pos.pm;pos.eq.ra double nullable var_type Information about the Photometric Variability Type src.class;src.var char nullable eq_li_6707a_limit Limit Flag for Equivalent Width of the Lithium Line meta.code;spect.line.eqWidth char nullable v_sini Simbad Projected Rotational Velocity km/s phys.veloc.rotat double nullable hardness_ratio_1_error Error in Hardness Ratio HR1 stat.error;phot.flux;arith.ratio;em.X-ray.soft double nullable v_sini_flag Flag [ab?] for Simbad Projected Rotational Velocity meta.code;phys.veloc.rotat char nullable eq_li_6707a_flag Uncertainty Flag [?] for Equivalent Width of the Lithium Line meta.code;spect.line.eqWidth char nullable number_asas_imag_obs Number of ASAS Observations in the I-Band meta.number;obs short nullable imag_amp Lower Limit for Maximum Amplitude of the I-Band Variability mag src.var.amplitude;em.opt.V double nullable bol_correction_imag Adopted Bolometric Correction for I-Band mag phot.mag.bc;em.opt.I double nullable lii Galactic Longitude degree pos.galactic.lon double nullable asas_imag ASAS Mean Magnitude in the I-Band mag phot.mag;em.opt.I double nullable pm_dec Simbad Proper Motion in Declination mas/yr pos.pm;pos.eq.dec double nullable visual_companion_flag Flag Indicates Visual Companions meta.code.multip char nullable asas_imag_dispersion ASAS Dispersion of the I-Band Measurements mag stat.error;phot.mag;em.opt.I double nullable radial_velocity Simbad Radial Velocity km/s spect.dopplerVeloc double nullable eq_li_6707a Equivalent Width of the Lithium Line at 6704 Angstroms Angstrom spect.line.eqWidth double nullable close_companion_status Close or Spectroscopic Companions meta.code.multip char nullable simbad_type Simbad Type (Classification) src.class char nullable v_sini_limit Limit Flag for Simbad Projected Rotational Velocity meta.code;phys.veloc.rotat char nullable bii Galactic Latitude degree pos.galactic.lat double nullable remarks Remarks meta.note char nullable period Adopted Period of Luminosity Changes d time.period double nullable number_asas_vmag_obs Number of ASAS Observations in the V-Band meta.number short nullable hardness_ratio_1 ROSAT Bright Source Catalog (IX/10) Hardness Ratio HR1, (H-S)/(H+S) phot.flux;arith.ratio;em.X-ray.soft double nullable vmag_amp Lower Limit for Maximum Amplitude of the V-Band Variability mag src.var.amplitude;em.opt.I double nullable parallax Simbad Heliocentric Parallax mas pos.parallax double nullable vmag Simbad V Magnitude mag phot.mag;em.opt.V double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable