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J/A+A/403/247      Variability in the ROSAT All-Sky Survey  (Fuhrmeister+, 2003)

A systematic study of X-ray variability in the ROSAT All-Sky Survey. Fuhrmeister, B., Schmitt, J.H.M.M. <Astron. Astrophys. 403, 247 (2003)> =2003A&A...403..247F
ADC_Keywords: X-ray sources ; Photometry, UBV ; Cross identifications Keywords: surveys - X-rays: general - stars: activity - stars: flares Description: 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. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table7.dat 120 1207 Catalog of variable sources found in the ROSAT All-Sky Survey
See also: 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) Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Seq Sequential number of source 6- 7 I2 h RAh X-ray right ascension (J2000) 9- 10 I2 min RAm X-ray right ascension (J2000) 12- 16 F5.2 s RAs X-ray right ascension (J2000) 18 A1 --- DE- X-ray declination sign (J2000) 19- 20 I2 deg DEd X-ray declination (J2000) 22- 23 I2 arcmin DEm X-ray declination (J2000) 25- 28 F4.1 arcsec DEs X-ray declination (J2000) 30 I1 --- flare [0/1] Flare flag 32 I1 --- aflare [0/1] Flare flag (automatically found) 34 I1 --- fper [0/1] Period flag 36 I1 --- afper [0/1] Period flag (automatically found) 38 I1 --- trend [0/1] Trend flag 40 I1 --- atrend [0/1] Trend flag (automatically found) 42- 46 A5 --- Type Type of source (1) 47 A1 --- n_Type [UNX] Note on Type (2) 48- 77 A30 --- Name Identifier of the source (3) 79- 84 F6.3 --- Bmag ?=0.0 B magnitude from USNO-A2.0, Cat. I/252 87- 92 F6.3 --- Vmag ?=0.0 V magnitude from USNO-A2.0, Cat. I/252 94-119 A26 --- Remarks Remarks on source 120 A1 --- n_Name [C] C: data corrected by CDS (4)
Note (1): Spectral type or morphological type: BLL: BL Lac object IR: Infrared source LXB: Low-mass X-ray binary WD: White dwarf AGN: Active galactic nuclei SNR: Supernova remnant QSO: Quasar Sy1: Seyfert type 1 galaxy Sy2: Seyfert type 2 galaxy bla: Blazar gal: Galaxy rad: Radio source star: Star Note (2): Remarks on source: last character U : object was identified by the USNO-A2.0 catalog last character N : object was identified by NED X : X-ray object (no optical counterpart found) Note (3): NuID : no unique identification possible Note (4): On 29-Jan-2004, some source identifications were corrected by CDS. 0558: K U 1RXS J102149.7-415850 corrected into NuID 0566: K U 1RXS J104346.6+223006 corrected into NuID 0567: Sy1 RBS 901 0.0 17.5 corrected into K U 1RXS J104346.6+223006 0.0 0.0 0568: K0 V* EK UMa 18.0 18.0 cataclysmic var. corrected into Sy1 RBS 901 0.0 0.0 0571: K0 V* DM UMa 10.31 9.31 RS CVn star corrected into NuID 0.0 0.0 0572: G5V GSC 06643-01097 11.15 10.49 corrected into K0 V* DM UMa 10.31 9.31 RS CVn star 0573: star RBS 928 0.0 0.0 corrected into G5V GSC 06643-01097 11.15 10.49 0576: star V* AN UMa 15.5 15.5 DA corrected into NuID 0.0 0.0 0599: M4.5e 1RXS J113523.0-191321 0.0 0.0 corrected into NuID 0.0 0.0 1077: A U 1RXS J145307.8+380319 0.0 0.0 corrected into NuID 0.0 0.0 1130: star U 1RXS J213619.0-444350 0.0 0.0 corrected into NuID 0.0 0.0 1131: NuID 0.0 0.0 corrected into star U 1RXS J213619.0-444350 0.0 0.0 1154: V* FQ Aqr corrected into V* FO Aqr 1190: 219213 corrected into HD 219113
History: 29-Jan-2004: Some sources identifications corrected (see Note (4)) Acknowledgements: Birgit Fuhrmeister
(End) Patricia Bauer [CDS] 06-Mar-2003
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