J/A+A/467/785 SuperWASP/ROSAT periodic variable stars (Norton+, 2007)
New periodic variable stars coincident with ROSAT sources discovered
using SuperWASP.
Norton A.J., Wheatley P.J., West R.G., Haswell C.A., Street R.A.,
Collier Cameron A., Christian D.J., Clarkson W.I., Enoch B., Gallaway M.,
Hellier C., Horne K., Irwin J., Kane S.R., Lister T.A., Nicholas J.P.,
Parley N., Pollacco D., Ryans R., Skillen I., Wilson D.M.
<Astron. Astrophys. 467, 785 (2007)>
=2007A&A...467..785N 2007A&A...467..785N
ADC_Keywords: Radio sources ; Stars, variable ; Photometry
Keywords: stars: binaries: eclipsing - stars: rotation -
stars: variables: general
Abstract:
We present optical lightcurves of 428 periodic variable stars
coincident with ROSAT X-ray sources, detected using the first run of
the SuperWASP photometric survey. Only 68 of these were previously
recognised as periodic variables. A further 30 of these objects are
previously known pre-main sequence stars, for which we detect a
modulation period for the first time. Amongst the newly identified
periodic variables, many appear to be close eclipsing binaries, their
X-ray emission is presumably the result of RS CVn type behaviour.
Others are probably BY Dra stars, pre-main sequence stars and other
rapid rotators displaying enhanced coronal activity. A number of
previously catalogued pulsating variables (RR Lyr stars and Cepheids)
coincident with X-ray sources are also seen, but we show that these
are likely to be misclassifications. We identify four objects which
are probable low mass eclipsing binary stars, based on their very red
colour and light curve morphology.
Description:
The two tables included here comprise 1) A list of 68 SuperWASP
objects showing periodic variability, coincident with ROSAT sources,
and previously classified as periodic variable stars, 2) A list of 360
SuperWASP objects showing periodic variability, coincident with ROSAT
sources, newly identified as periodic variable stars. Periods,
magnitudes and cross-identifications are included. Lightcurves of each
may be found in the on-line journal paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 180 68 Previously classified variable stars
table2.dat 120 360 Newly identified variable stars
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See also:
IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)
IX/29 : ROSAT All-Sky Survey Faint Source Catalog (1RXS) (Voges+ 2000)
IX/30 : Second ROSAT PSPC Catalog (2RXP) (ROSAT, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 I1 --- n_1SWASP ? Number of duplicate SuperWASP objects (if N>1)
3- 21 A19 --- 1SWASP SuperWASP designation, JHHMMSS.ss+DDMMSS.s
23- 43 A21 --- ROSAT ROSAT designation
45- 51 F7.4 d Per SuperWASP period
53- 57 F5.2 mag Vmag SuperWASP V magnitude
59- 63 F5.2 mag B1mag USNO-B1 blue magnitude
65- 69 F5.2 mag R1mag USNO-R1 red magnitude
71- 97 A27 --- VName Variable star name
99-118 A20 --- VType Variable star type
120-129 F10.7 d Per1 ? Previous catalogued period
131-149 A19 --- BibCode Reference bibcode to catalogued period
151-180 A30 --- Aut Reference author's name to catalogued period
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1 I1 --- n_1SWASP ? Number of duplicate SuperWASP objects (if N>1)
3- 21 A19 --- 1SWASP SuperWASP designation, JHHMMSS.ss+DDMMSS.s
23- 43 A21 --- ROSAT ROSAT designation
45- 51 F7.4 d Per SuperWASP period
53- 57 F5.2 mag Vmag SuperWASP V magnitude
59- 63 F5.2 mag B1mag USNO-B1 blue magnitude
65- 69 F5.2 mag R1mag USNO-R1 red magnitude
70 A1 --- n_Name [*] *: Corrected vaule (1)
71- 89 A19 --- Name Star name (if exists)
91-109 A19 --- Type Star type (if exists)
111-120 A10 --- SpType MK spectral type (if exists)
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Note (1): StKM 1-1501 originaly associated with 1RXS J173658.9+485931, was
associated to 1RXS J173658.21+300947.5 by CDS on 12-Oct-2007.
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Acknowledgements:
A.J. Norton, A.J.Norton(at)open.ac.uk
History:
* 10-Apr-2007: Original version
* 12-Oct-2007: In table2, StKM 1-1501 originally associated with
1RXS J173658.9+485931, now associated to 1RXS J173657.6+300943.
(modification made at CDS)
(End) A.J. Norton [The Open University], Patricia Vannier [CDS] 10-Apr-2007