FlareStars ivo://nasa.heasarc/flarestars NASA/GSFC HEASARC Gershberg et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov This table contains the catalog of the UV Cet-type flare stars and related objects in the solar vicinity. This new catalog of flare stars includes 463 objects. It contains astrometric, spectral and photometric data as well as information on the infrared, radio and X-ray properties and general stellar parameters. This table was created by the HEASARC in October 2005 based on the merger of 3 CDS tables (table1.dat, table2.dat and atble3.dat) from the <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+AS/139/555/">CDS Catalog J/A+AS/139/555/</a> . This is a service provided by NASA HEASARC . 1999A&AS..139..555G https://heasarc.gsfc.nasa.gov/W3Browse/all/flarestars.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=flarestars& GET text/xml 180 99999 true 3.74838568 -72.84367471 0.0333333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=flarestars GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_flarestars&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.0333333333333333 Optical public flarestars UV Cet-type Flare Stars & Related Objects Catalog sequence_number Sequential Number That Uniquely Identifies Each Entry in the Catalog meta.id;meta.main short nullable name Common Designation 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 vmag V Magnitude mag phot.mag;em.opt.V double nullable spect_type Spectral Type src.spType char nullable "distance" Distance (pc) pc pos.distance 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 radio_flare_flag Flag [R] Indicates Existence of Radio Data for Flares meta.code.multip char nullable alt_name_4 Alternative Designation #4 meta.id char nullable position_flag Flag Indicates Origin of Position meta.code;pos char nullable flux_pspc ROSAT PSPC Flux (erg/s/cm^2) erg/s/cm^2 phot.flux;em.X-ray.soft double nullable bii Galactic Latitude degree pos.galactic.lat double nullable count_rate_s2a ROSAT WFC S2a (62-111eV) Filter Count Rate (ct/ks) ct/ks phot.count;instr.filter;em.UV double nullable pm_ra Proper Motion in Right Ascension (s/yr) s/yr pos.pm;pos.eq.ra double nullable radio_wavelengths Radio Wavelengths of Observation(s) (cm) cm em.wl char nullable alt_spect_type Alternative Spectral Type src.spType char nullable mass Stellar Mass (Solar Mass Units) Solar_Mass phys.mass double nullable radius Stellar Radius (Solar Radius Units) Solar_Radius phys.size.radius double nullable log_lx_einstein Log10 of Einstein X-ray Luminosity (in erg/s) log(erg/s) phys.luminosity;em.X-ray double nullable log_lradbb Log10 of BB Radio Luminosity (in erg/s) log(erg/s) phys.luminosity;em.radio double nullable log_lx_rosat_max Log10 of Maximum ROSAT X-ray Luminosity (in erg/s), If Interval log(erg/s) phys.luminosity;em.X-ray;stat.max double nullable flux_100um_max Maximum 100-um Flux, If Interval (Jy) Jy phot.flux;stat.max double nullable radius_flag Flag Indicates Radius for A and B Components phys.size.radius char nullable log_lx_exosat_max Log10 of Maximum EXOSAT X-ray Luminosity (in erg/s), If Interval log(erg/s) phys.luminosity;em.X-ray;stat.max double nullable rmag_flag Flag [J] Indicates Total R Magnitude of Close Binary System[J] Note on Rmag meta.code;phot.mag;em.opt.R char nullable log_l_bol Log10 of Bolometric Luminosity (in erg/s) log(erg/s) phys.luminosity double nullable alt_name_6 Alternative Designation #6 meta.id char nullable flux_ipc Einstein IPC Flux (erg/s/cm^2) erg/s/cm^2 phot.flux;em.X-ray.soft double nullable log_lx_exosat_flag Flag [J] Indicates Total Luminosity of Close Binary System meta.code;phys.luminosity;em.X-ray char nullable log_lx_einstein_max Log10 of Maximum Einstein X-ray Luminosity (in erg/s), If Interval log(erg/s) phys.luminosity;em.X-ray;stat.max double nullable flux_60um_limit Flag Indicates IRAS 60-um Flux Density Is Upper Limit or Uncertain meta.code;phot.flux.density;em.IR.30-60um char nullable flux_25um IRAS Flux Density at 25 um (Jy) Jy phot.flux.density;em.IR.15-30um double nullable flux_25um_limit Flag Indicates IRAS 25-um Flux Density Is Upper Limit or Uncertain meta.code;phot.flux.density;em.IR.15-30um char nullable flux_100um IRAS Flux Density at 100 um (Jy) Jy phot.flux.density;em.IR.60-100um double nullable alt_name_2 Alternative Designation #2 meta.id char nullable spotted_flag Flag [S] Indicates Existence of Photometrical Evidence for Stellar Spottedness meta.code char nullable alt_name_7 Alternative Designation #7 meta.id char nullable alt_name_9 Alternative Designation #9 meta.id char nullable log_lx_exosat Log10 of EXOSAT X-ray Luminosity (in erg/s) log(erg/s) phys.luminosity;em.X-ray double nullable log_l_bol_flag Flag [J] Indicates Total Bolometric Luminosity of Close Binary System meta.code;phys.luminosity char nullable flux_12um_flag Flag [J] Indicates Total Flux Density of Close Binary System meta.code;phot.flux.density;em.IR.8-15um char nullable umag U Magnitude mag phot.mag;em.opt.U double nullable halpha_ew_ref Reference Code for H-alpha Equivalent Width meta.bib;spect.line.eqWidth;em.line.Halpha char nullable rmag R Magnitude mag phot.mag;em.opt.R double nullable alt_name_3 Alternative Designation #3 meta.id char nullable lmag_flag Flag [J] Indicates Total L Magnitude of Close Binary System meta.code;phot.mag;em.IR.3-4um char nullable bv_color B-V Color Index mag phot.color;em.opt.B;em.opt.V double nullable imag_flag Flag [J] Indicates Total I Magnitude of Close Binary System[J] Note on Imag meta.code;phot.mag;em.opt.I char nullable log_lrad_limit Limit Flag for Radio Luminosity meta.code;phys.luminosity;em.radio char nullable bv_color_flag Flag [J] Indicates Total B-V Color Index of Close Binary System meta.code.multip;phot.color;em.opt.B;em.opt.V char nullable lii Galactic Longitude degree pos.galactic.lon double nullable log_lradbb_max Log10 of Second Value of BB Radio Luminosity (in erg/s) log(erg/s) phys.luminosity;em.radio;stat.max double nullable count_rate_400a EUVE 400-Angstrom Count Rate (ct/ks) ct/ks phot.count;em.UV short nullable halpha_ew H-alpha Equivalent Width (Angstrom) Angstrom spect.line.eqWidth;em.line.Halpha double nullable jmag J Magnitude mag phot.mag;em.IR.J double nullable flux_radio_flag Flag [J] Indicates Total Radio Flux Density of Close Binary System meta.code;phot.flux.density;em.radio char nullable kmag_flag Flag [J] Indicates Total K Magnitude of Close Binary System[J] Note on Kmag meta.code;phot.mag;em.opt char nullable count_rate_200a EUVE 200-Angstrom Count Rate (ct/ks) ct/ks phot.count;em.UV short nullable count_rate_s1a ROSAT WFC S1a (90-185eV) Filter Count Rate (ct/ks) ct/ks phot.count;instr.filter;em.UV short nullable log_lx_rosat_flag Flag [J] Indicates Total Luminosity of Close Binary System meta.code;phys.luminosity;em.X-ray char nullable count_rate_s1a_flag Flag Indicates S1a Count Rate Enhanced by Flare Events meta.code;phot.count;instr.filter;em.UV char nullable count_rate_600a EUVE 600-Angstrom Count Rate (ct/ks) ct/ks phot.count;em.UV short nullable bmag_flag Flag [J] Indicates Total of Binary System, [pg] Indicates Photographic Mag. meta.code;phot.mag;em.opt.B char nullable epoch Epoch of Observation When Proper Motions Are Not Available (Equinox 2000.0) yr time.epoch;pos double nullable lmag L Magnitude mag phot.mag;em.IR.3-4um double nullable flux_60um_max_limit Flag Indicates Maximum 60-um Flux Density Is Upper Limit meta.code;phot.flux.density;em.IR.30-60um char nullable flux_radio_limit Limit Flag for Radio Flux Density meta.code;phot.flux.density;em.radio char nullable log_lrad_flag Flag [J] Indicates Total Radio Luminosity of Close Binary System meta.code;phys.luminosity;em.radio char nullable log_lx_rosat Log10 of ROSAT X-ray Luminosity (in erg/s) log(erg/s) phys.luminosity;em.X-ray double nullable log_lx_einstein_flag Flag [J] Indicates Total Luminosity of Close Binary System meta.code;phys.luminosity;em.X-ray char nullable hmag_flag Flag [J] Indicates Total H Magnitude of Close Binary System[J] Note on Hmag meta.code;phot.mag;em.IR.H char nullable multiplicity Visual Binary Component meta.code.multip char nullable vmag_flag Flag [J] Indicates Total V Magnitude of Close Binary System[J] Note on Vmag meta.code;phot.mag;em.opt.V char nullable alt_name_1 Alternative Designation #1 meta.id char nullable flux_radio_max Maximum Radio Flux, If Interval, or Second Value (mJy) mJy phot.flux;em.radio;stat.max double nullable distance_ref Reference Code for Distance meta.bib;pos.distance char nullable flux_12um IRAS Flux Density at 12 um (Jy) Jy phot.flux.density;em.IR.8-15um double nullable jmag_flag Flag [J] Indicates Total J Magnitude of Close Binary System[J] Note on Jmag meta.code;phot.mag;em.opt char nullable flux_12um_max Maximum 12-um Flux Density, If Interval (Jy) Jy phot.flux.density;stat.max double nullable log_lrad Log10 of Radio Luminosity (in erg/s/Hz) log(erg/s/Hz) phys.luminosity;em.radio double nullable count_rate_s2a_flag Flag Indicates S2a Count Rate Enhanced by Flare Events meta.code;phot.count;instr.filter;em.UV char nullable flux_12um_limit Flag Indicates IRAS 12-um Flux Density Is Upper Limit or Uncertain meta.code;phot.flux.density;em.IR.8-15um char nullable count_rate_200a_flag Flag Indicates 200-Angstrom Count Rate Obtained with Deep or Long Exposures meta.code;phot.count;em.UV char nullable flux_25um_max Maximum 25-um Flux Density, If Interval (Jy) Jy phot.flux.density;stat.max double nullable imag I Magnitude mag phot.mag;em.opt.I double nullable umag_flag Flag [J] Indicates Total U Magnitude of Close Binary System meta.code;phot.mag;em.opt.U char nullable xray_flare_flag Flag [X] Indicates Existence of an X-ray Flare Observation meta.code;phot;em.X-ray char nullable kmag K Magnitude mag phot.mag;em.IR.K double nullable count_rate_400a_flag Flag Indicates 400-Angstrom Count Rate Obtained with Deep or Long Exposures meta.code;phot.count;em.UV char nullable flux_radio_max_limit Limit Flag for Maximum Radio Flux Density meta.code;phot.flux;em.radio;stat.max char nullable hmag H Magnitude mag phot.mag;em.IR.H double nullable flux_60um_max Maximum 60-um Flux, If Interval (Jy) Jy phot.flux;stat.max double nullable alt_name_8 Alternative Designation #8 meta.id char nullable flux_60um IRAS Flux Density at 60 um (Jy) Jy phot.flux.density;em.IR.30-60um double nullable bmag B Magnitude mag phot.mag;em.opt.B double nullable flux_100um_max_limit Flag Indicates Maximum 100-um Flux Density Is Upper Limit meta.code;phot.flux;stat.max char nullable alt_name_5 Alternative Designation #5 meta.id char nullable flux_25um_max_limit Flag Indicates Maximum 25-um Flux Density Is Upper Limit meta.code;phot.flux.density;em.IR.15-30um char nullable class Browse Object Classification src.class short nullable log_lradbb_limit Limit Flag for BB Radio Luminosity meta.code;phys.luminosity;em.radio char nullable flux_radio_other Third Value of Radio Flux Density (mJy) mJy phot.flux.density;em.radio double nullable flux_radio Radio Flux Density (mJy) mJy phot.flux.density;em.radio double nullable count_rate_100a_flag Flag Indicates 100-Angstrom Count Rate Obtained with Deep or Long Exposures meta.code;phot.count;em.UV char nullable pm_dec Proper Motion in Declination (arcsec/yr) arcsec/yr pos.pm;pos.eq.dec double nullable flux_100um_limit Flag Indicates IRAS 100-um Flux Density Is Upper Limit or Uncertain meta.code;phot.flux.density;em.IR.60-100um char nullable count_rate_100a EUVE 100-Angstrom Count Rate (ct/ks) ct/ks phot.count;em.UV double nullable log_lrad_max Log10 of Second Value or Maximum Value of Radio Luminosity, If Interval log(erg/s/Hz) meta.code;phys.luminosity;em.radio double nullable