2011MNRAS.413.2709S

Query : 2011MNRAS.413.2709S

2011MNRAS.413.2709S - Mon. Not. R. Astron. Soc., 413, 2709-2720 (2011/June-1)

Cepheid investigations using the Kepler space telescope.

SZABO R., SZABADOS L., NGEOW C.-C., SMOLEC R., DEREKAS A., MOSKALIK P., NUSPL J., LEHMANN H., FURESZ G., MOLENDA-ZAKOWICZ J., BRYSON S.T., HENDEN A.A., KURTZ D.W., STELLO D., NEMEC J.M., BENKO J.M., BERDNIKOV L., BRUNTT H., EVANS N.R., GORYNYA N.A., PASTUKHOVA E.N., SIMCOE R.J., GRINDLAY J.E., LOS E.J., DOANE A., LAYCOCK S.G., MINK D.J., CHAMPINE G., SLISKI A., HANDLER G., KISS L.L., KOLLATH Z., KOVACS J., CHRISTENSEN-DALSGAARD J., KJELDSEN H., ALLEN C., THOMPSON S.E. and VAN CLEVE J.

Abstract (from CDS):

We report results of initial work done on selected candidate Cepheids to be observed with the Kepler space telescope. Prior to the launch, 40 candidates were selected from previous surveys and data bases. The analysis of the first 322 d of Kepler photometry, and recent ground-based follow-up multicolour photometry and spectroscopy allowed us to confirm that one of these stars, V1154 Cyg (KIC 7548061), is indeed a 4.9-d Cepheid. Using the phase lag method, we show that this star pulsates in the fundamental mode. New radial velocity data are consistent with previous measurements, suggesting that a long-period binary component is unlikely. No evidence is seen in the ultraprecise, nearly uninterrupted Kepler photometry for non-radial or stochastically excited modes at the micromagnitude level. The other candidates are not Cepheids, but an interesting mix of possible spotted stars, eclipsing systems and flare stars.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): techniques: photometric - techniques: spectroscopic - stars: individual (V1154 Cygni, KIC 7548061) - stars: individual (V2279 Cygni, KIC 8022670) - stars: oscillations - stars: variables: Cepheids

VizieR on-line data: <Available at CDS (J/MNRAS/413/2709): table1.dat table2.dat table3.dat table4.dat table5.dat>

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * alf UMi cC* 02 31 49.09456 +89 15 50.7923 3.00 2.62 2.02 1.53 1.22 F8Ib 716 2
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 ASAS J190148+3807.0 RS* 19 01 48.2025934536 +38 07 02.030626236     13.550   12.254 K2 13 0
4 V* V473 Lyr cC* 19 15 59.4893949000 +27 55 34.686262056 7.18 6.770 6.153     F8Ib-II 226 0
5 V* V2279 Cyg Ce* 19 18 54.4643970696 +43 49 25.882243824     12.746   11.411 G9IIIbe 22 0
6 ASAS J192000+4149.1 * 19 20 00.1089792432 +41 49 07.461333192   12.45 11.60   10.594 ~ 23 0
7 1RXS J192345.6+511608 Ce* 19 23 44.9865135816 +51 16 11.761172004     12.636 12.84 11.446 ~ 15 0
8 V* V1154 Cyg cC* 19 48 15.4661680536 +43 07 36.960514968   9.92 9.14   8.120 G0 115 0

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