Variability in the ROSAT All-Sky Survey J/A+A/403/247 ivo://CDS.VizieR/J/A+A/403/247 doi:10.26093/cds/vizier.34030247 CDS Fuhrmeister B. Schmitt J.H.M.M. 2004-01-29T12:39:52Z 2004-01-29T13:39:06Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr x-ray-sources visible-astronomy broad-band-photometry astronomical-object-identification We present a systematic search for variability among the ROSAT All-Sky Survey (RASS) X-ray sources. We generated lightcurves for about 30000 X-ray point sources detected sufficiently high above background. For our variability study different search algorithms were developed in order to recognize flares, periods and trends, respectively. The variable X-ray sources were optically identified with counterparts in the SIMBAD, the USNO-A2.0 and NED data bases, but a significant part of the X-ray sources remains without cataloged optical counterparts. A complete list of the 1207 variable sources we found is presented here. 2003A&A...403..247F https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/403/247 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999) IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000) I/252 : The USNO-A2.0 Catalogue (Monet+ 1998) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/403/247 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/403/247 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/403/247 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/403/247 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/403/247 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/403/247 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/403/247/table7 (Catalog of variable sources found in the ROSAT All-Sky Survey) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/403/247/table7? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/403/247/table7? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/403/247/table7? GET text/xml+votable 180.0 50000 true 2.62975 10.97625 0.005555555555555556 6/90 207 447 472 493 636 778 840 888 924 940 974 982 1005 1038 1048 1057 1077 1135 1138 1168 1276 1282-1283 1405 1487 1504 1535 1603 1665 1748 1774 1787 1821 1828 1853 1922-1923 1990 2002 2012 2031 2058 2066 2134 2260 2266 2311 2366 2422 2515 2660 2668 2762 2942 2956 2972 3030 3047 3056 3063 3109 3210 3314 3376 3378 3383 3425 3463 3495 3559 3566 3618 3644 3659 3674 3729 3870 3908 3916 3960 3986 4012 4051 4073 4079 4158 4177 4190 4377 4444 4473 4516 4566 4658 4685 4693 4750 4957 5078 5115 5304 5367 5369 5423 5558 5572 5577 5592 5622 5638 5646 5711 5727 5743 5772 5818 5854 5950 5957 5998 6021 6028 6033 6035-6036 6040 6063 6076 6122 6129 6169 6189 6217 6340 6384 6391 6456 6764 6836 6845 6866 6879 6883 6889 6930 6937 7241 7246 7273 7286 7402 7435-7436 7461 7484 7512 7548 7572 7631 7684 7764 7810 7917 8051 8062-8063 8066 8126 8163 8283 8373 8376 8384 8449 8579 8699 8732 8777 8954 9059 9158 9189 9194 9289 9311 9333 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40031 40084 40096 40143 40189 40215 40225 40235 40255 40271 40293 40349 40435 40717 40748 40776 40784 41122 41158 41399 41454 41530 41591 41598 41607 41616 41666 41799 41917 41947 41963 42208 42319 42349 42363 42394 42415 42420 42520 42559 42578 42634 42654 42666 42751 42777 42796 42903 42908 42943 43019 43070 43150 43165 43195 43335 43345 43481 43532 43538 43616 43851 43908 43911 43993 44067-44068 44130 44360-44361 44366 44388 44446 44585 44754 44865 45382 45419 45492 45511 45531 45580 45814 45822 45855 45934 45984 45992 46116 46236 46247 46256 46283 46307 46351 46383 46521 46598 46624 46662 46736 46776 46922 47014 47062 47091 47299 47375 47454 47470 47496 47824 47936 48141 48155 48163-48164 48263 48274 48283 48369 48373 48411 48500 48540 48543 48553 48801 49112-49113 49125 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/403/247?format=ascii X-ray Optical default J/A+A/403/247/table7 Catalog of variable sources found in the ROSAT All-Sky Survey DEJ2000 X-ray declination (J2000) pos.eq.dec;meta.main recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Seq Sequential number of source meta.id char RAJ2000 X-ray right ascension (J2000) pos.eq.ra;meta.main flare [0/1] Flare flag meta.code int aflare [0/1] Flare flag (automatically found) meta.code int fper [0/1] Period flag meta.code int afper [0/1] Period flag (automatically found) meta.code int trend [0/1] Trend flag meta.code int atrend [0/1] Trend flag (automatically found) meta.code int Type Type of source (1) src.class char n_Type [UNX] Note on Type (2) meta.note char Name Identifier of the source (3) meta.id.part;meta.main char Bmag ? B magnitude from USNO-A2.0, Cat. <I/252> phot.mag;em.opt.B float nullable Vmag ? V magnitude from USNO-A2.0, Cat. <I/252> phot.mag;em.opt.V float nullable Remarks Remarks on source meta.note char n_Name [C] C: data corrected by CDS (4) meta.note char ROSAT Find details in ROSAT catalogues meta.ref char