DNCVOBCAT ivo://nasa.heasarc/dncvobcat NASA/GSFC HEASARC Coppejans et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Dwarf Nova This outburst catalog contains a wide variety of observational properties for 722 dwarf nova-type (DN) cataclysmic variables (CVs) and 309 CVs of other types from the Catalina Real-time Transient Survey (CRTS). In particular, it includes the apparent outburst and quiescent V-band magnitudes, duty cycles, limits on the recurrence time, upper- and lower-limits on the distance and absolute quiescent magnitudes, color information, orbital parameters, and X-ray counterparts. These properties were determined by means of a classification script presented in the reference paper. The DNs in the catalog show a correlation between the outburst duty cycle and the orbital period (and outburst recurrence time), as well as between the quiescent absolute magnitude and the orbital period (and duty cycle). This is the largest sample of dwarf nova properties collected to date (2016). Besides serving as a useful reference for individual systems and a means of selecting objects for targeted studies, it will prove valuable for statistical studies that aim to shed light on the formation and evolution of cataclysmic variables. The CRTS identifies transients in the data from the Catalina Sky Survey (Larson et al. 1998, BAAS, 30, 1037; 2003, BAAS, 35, 982), a photometric survey that searches for Potentially Hazardous Asteroids and Near Earth Objects. Three sub-surveys constitute the Catalina Sky Survey, namely the original CSS (Catalina Schmidt Survey), the MLS (Mt Lemmon Survey) based in Arizona, and the SSS (Siding Spring Survey) in Australia, which ended on 2014 July 5. The field of view and typical limiting magnitude for each survey (at ~30 s integrations) are 8.2 degrees and V~19.5 mag for the CSS, 1.1 degrees and V~21.5 mag for the MLS, and 4 degrees and V~19 mag for the SSS. Together, these surveys cover 30, 000 deg<sup>2</sup> between -70 and +70 degrees Declination (see Drake et al. 2014, MNRAS, 441, 1186 for more details). The entire zone within 15 Degrees of the Galactic Plane is avoided due to overcrowding, as are the Magellanic Clouds. The properties of the cataclysmic variables in this catalog are derived from the long-term optical light curves from the CRTS, as well as magnitudes, fluxes and orbital parameters from the SDSS, 2MASS, UKIDSS, ROSAT, Chandra, XMM and WISE catalogs, and from the Catalog of Cataclysmic Binaries, Low-Mass X-Ray Binaries and Related Objects (RKCat: Ritter and Kolb 2003, A&A, 404, 301, available at the HEASARC as the RITTERCV, RITTERLMXB and RITTERRBIN tables). This table was created by the HEASARC in October 2017 based on the <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/456/4441">CDS catalog J/MNRAS/456/4441</a> file catalog.dat. . This is a service provided by NASA HEASARC . 2016MNRAS.456.4441C https://heasarc.gsfc.nasa.gov/W3Browse/all/dncvobcat.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=dncvobcat& GET text/xml 180 99999 true 325.57238 -67.80032 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=dncvobcat GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_dncvobcat&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0166666666666667 Infrared Optical X-ray public dncvobcat Outburst Catalog of Dwarf Novae-type and Other Cataclysmic Varia name CRTS Source Designation (CRTS JHHMMSS.S+DDMMSS) meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable source_type Classification Determined by Classification Script src.class char nullable ritter_source_type Classification from RKCAT src.class char nullable orbital_period Orbital Period from RKCAT h time.period double nullable outburst_vmag Apparent Outburst Magnitude mag phot.mag;em.opt.V double nullable quiescent_vmag Apparent Quiescent Magnitude mag phot.mag;em.opt.V double nullable jmag 2MASS J-Band Magnitude mag phot.mag;em.IR.J double nullable w1_mag WISE w1-Band Magnitude mag phot.mag;em.IR.3-4um 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 superhump_period Superhump Period from RKCAT h time.period double nullable xmm_flux XMM 0.2-12 keV Count Rate erg/s/cm^2 phot.count;em.X-ray double nullable chandra_flux_lower Lower Limit on the Chandra 0.5-7keV Flux erg/s/cm^2 phot.count;em.X-ray;stat.min double nullable alt_orbital_period Orbital Period Estimated from Superhump Period h time.period double nullable rosat_count_rate ROSAT 0.1-2.4 keV Count Rate ct/s phot.count;em.X-ray.soft double nullable chandra_flux_upper Upper Limit on the Chandra 0.5-7keV Flux erg/s/cm^2 phot.count;em.X-ray;stat.max double nullable num_epochs_observed Number of Epochs Observed by the CRTS meta.number;time.epoch short nullable bii Galactic Latitude degree pos.galactic.lat double nullable ukidss_hmag UKIDSS H-Band Magnitude mag phot.mag;em.IR.H double nullable ukidss_kmag UKIDSS K-Band Magnitude mag phot.mag;em.IR.K double nullable imag SDSS i-Band Magnitude mag phot.mag;em.opt.I double nullable ukidss_ymag UKIDSS Y-Band Magnitude mag phot.mag;em.IR double nullable umag SDSS u-Band Magnitude mag phot.mag;em.opt.U double nullable lii Galactic Longitude degree pos.galactic.lon double nullable ukidss_jmag UKIDSS J-Band Magnitude mag phot.mag;em.IR.J double nullable quiescent_abs_vmag_upper Bright Limit on the Absolute Magnitude in Quiescence mag phot.mag;em.opt.V;stat.max double nullable duty_cycle Fraction of Epochs in Outburst time.interval;arith.ratio double nullable distance_upper Distance Upper Limit pc pos.distance;stat.max short nullable zmag SDSS z-Band Magnitude mag phot.mag;em.opt double nullable quiescent_abs_vmag_lower Faint Limit on the Absolute Magnitude in Quiescence mag phot.mag;em.opt.V;stat.min double nullable kmag 2MASS K-Band Magnitude mag phot.mag;em.IR.K double nullable w3_mag WISE w3-Band Magnitude mag phot.mag;em.IR.8-15um double nullable inclination Orbital Inclination from RKCAT degree src.orbital.inclination double nullable alt_names Other Known identifiers meta.id char nullable spectrum_flag Flag [YN] Indicates There Is a Spectrum for This Object in Breedt et al. meta.code char nullable inclination_limit Limit Flag for Orbital Inclination from RKCAT meta.code;src.orbital.inclination char nullable class Browse Object Classification src.class short nullable w2_mag WISE w2-Band Magnitude mag phot.mag;em.IR.4-8um double nullable distance_lower Distance Lower Limit pc pos.distance;stat.min short nullable crts_subsurvey CRTS Sub-Survey(s) in Which Object Was Detected (CSS, MLS, SSS) meta.ref;meta.table char nullable rmag SDSS r-Band Magnitude mag phot.mag;em.opt.R double nullable gmag SDSS g-Band Magnitude mag phot.mag;em.opt.B double nullable num_outbursts_detected Number of Outbursts Detected by the CRTS meta.number;time.epoch short nullable chandra_flux Chandra 0.5-7keV Flux erg/s/cm^2 phot.count;em.X-ray double nullable w4_mag WISE w4-Band Magnitude mag phot.mag;em.IR.15-30um double nullable hmag 2MASS H-Band Magnitude mag phot.mag;em.IR.H double nullable rosat_count_rate_error Error in the ROSAT 0.1-2.4 keV Count Rate ct/s stat.error;phot.count;em.X-ray.soft double nullable num_epochs_detected Number of Epochs Detected by the CRTS meta.number;time.epoch short nullable recurrence_time_upper Upper Limit on the Outburst Recurrence Time d time.interval short nullable xmm_flux_error Error in the XMM 0.2-12 keV Count Rate erg/s/cm^2 stat.error;phot.count;em.X-ray double nullable