2018ApJ...863..195Y

Query : 2018ApJ...863..195Y

2018ApJ...863..195Y - Astrophys. J., 863, 195-195 (2018/August-3)

A weak modulation effect detected in the light curves of KIC 5950759: intrinsic or instrumental effect?

YANG T., ESAMDIN A., SONG F., NIU H., FENG G., ZONG P., ZENG X., LIU J., LIU J., MA L. and ZHAO F.

Abstract (from CDS):

In this paper, the high-precision light curves of the Kepler target KIC 5950759 are analyzed. The Fourier analysis of the long cadence (LC) light curve reveals three independent frequencies. Two of them are main pulsation modes: F0 = 14.221373(21) d–1 and F1 = 18.337249(44) d–1. The third independent frequency, fm = 0.3193 d–1, is found in LC data with a signal-to-noise ratio of 6.2. A weak modulation of fm to F0 and F1 modes (triplet structures centered on F0 and F1) are detected both in long and short cadence data. This is the first detection of the modulation effect in a double-mode high-amplitude δ Scuti (HADS) star. The most possible cause of the modulation effect in the light curves is amplitude modulation with the star's rotation frequency of 0.3193 d–1. The preliminary analysis suggests that KIC 5950759 is in the bottom of the HADS instability strip and likely situated in the main sequence. Spectroscopic observations are necessary to verify the true nature of the modulation terms.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: oscillations - stars: variables: delta Scuti

Simbad objects: 36

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Number of rows : 36
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 V* GP And dS* 00 55 18.1502373336 +23 09 49.372684200   10.96 10.79     F0 95 0
2 V* SS Psc RR* 01 20 52.3620828960 +21 43 43.255051104   11.35 11.01     F0 104 0
3 V* RV Ari dS* 02 15 07.5021680088 +18 04 27.917480316   11.78       A 76 0
4 GD 428 SX* 03 47 19.8773016336 +63 22 42.150015336   13.10   13.26   ~ 104 0
5 V* RY Lep RR* 05 48 10.2595986216 -20 01 24.962850336   8.60 8.25     A9V 67 0
6 HD 254061 dS* 06 15 17.7325177032 +06 04 12.748103004   10.41 10.12     ~ 11 0
7 V* AD CMi dS* 07 52 47.1853100064 +01 35 50.473377528   9.66 9.38     F0IV/V 147 0
8 V* SZ Lyn dS* 08 09 35.7485046672 +44 28 17.600052000   9.73 9.08     F2 160 0
9 V* AI Vel dS* 08 14 05.1459825192 -44 34 32.854644660   6.98 6.70     A9IV/V 192 0
10 V* VZ Cnc dS* 08 40 52.1246716416 +09 49 27.149450016 7.49 7.35 7.18     A9III 194 0
11 V* BO Lyn dS* 08 43 01.2122317272 +40 59 51.769189608   11.81 11.49     kA6hA5mA9 17 0
12 V* BE Lyn dS* 09 18 17.1802207368 +46 09 11.310054192 9.110 9.040 8.800     A3 84 0
13 V* AE UMa SX* 09 36 53.1551304240 +44 04 00.399819288   11.54 11.35     A7V 103 0
14 V* VX Hya RR* 09 45 46.8525595968 -12 00 14.398202340   10.744 10.485 10.683 10.208 F2-8Ib 93 0
15 V* KZ Hya SX* 10 50 54.0711823776 -25 21 14.729108688   10.19 10.06     B9III/IV 86 0
16 V* V1264 Cen EB* 13 10 18.4224157272 -45 09 13.571821368   13.02 11.95   11.38 A7V 14 1
17 V* EH Lib dS* 14 58 55.9230581328 -00 56 53.011061520   10.09 9.83     A5 127 0
18 V* YZ Boo dS* 15 24 06.9993392928 +36 52 00.601700700 10.62 10.54 10.36     A6IV 132 1
19 V* DY Her dS* 16 31 17.9532980880 +11 59 52.455542712   10.80 10.50     A9.7:III 135 0
20 V* V974 Oph dS* 17 37 33.7423575432 -29 45 25.226399952   11.81 11.50     A5 40 0
21 V* V567 Oph dS* 17 58 27.2142123024 +01 06 05.222602440   11.65 11.08     G5 56 0
22 ASAS J190751+4629.2 dS* 19 07 50.7097759776 +46 29 11.904642240     12.610 12.74 12.165 F1V 42 0
23 ZTF J191500.54+411355.5 dS* 19 15 00.5414380896 +41 13 55.383511512     13.516   12.950 F0V 32 0
24 ATO J291.6554+01.2262 RR* 19 26 37.3219673784 +01 13 34.777336800   15.6 15.928 14.8   ~ 25 0
25 ASAS J192647-0030.0 dS* 19 26 47.2528986552 -00 30 01.543027140   14.01 13.474 13.315   ~ 13 0
26 V* V2367 Cyg dS* 19 34 45.5906528736 +45 54 16.308041580   11.54 11.48   10.960 F0IVs+? 40 0
27 ASAS J194803+4146.9 dS* 19 48 02.9170078944 +41 46 55.762778244   11.23 10.63   10.223 F6II 19 0
28 V* XX Cyg SX* 20 03 15.6420308880 +58 57 16.525249632   11.99 11.86     A5-F5 127 0
29 V* V1719 Cyg cC* 21 04 32.9209811688 +50 47 03.276283920   8.41 7.99     F5III 89 0
30 V* BP Peg RR* 21 33 13.5340951800 +22 44 24.306362268   12.20 12.05     A0 71 0
31 V* RS Gru dS* 21 43 04.2200918376 -48 11 22.183734588   8.53 8.26     A9IV 108 0
32 V* DE Lac RR* 22 10 07.7655952512 +40 55 10.577568072   10.74 10.43     F6.5 68 0
33 V* CY Aqr SX* 22 37 47.8520659536 +01 32 03.805667412 10.75 10.61 10.44     B8 218 0
34 V* DY Peg SX* 23 08 51.1858042512 +17 12 55.997525808   10.56 10.26     F5 204 1
35 V* SX Phe SX* 23 46 32.8928138474 -41 34 54.769886474   7.54 7.31     A3V 348 0
36 V* BS Aqr dS* 23 48 46.0153936248 -08 08 44.558180988   9.787 9.399     A8III 121 0

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