1994A&A...285..524P

Query : 1994A&A...285..524P

1994A&A...285..524P - Astronomy and Astrophysics, volume 285524-530 (1994/5-2)

The Fourier decomposition of new light curves of Cepheids with P<7 d.

PORETTI E.

Abstract (from CDS):

In this paper the Fourier decomposition was applied to photoelectric and CCD measurements of faint Cepheids for which the light curve was supplied for the first time with a sufficient accuracy. The Fourier decomposition is confirmed to be a pulsation mode discriminator and this property is discussed by considering also the case of the double-mode Cepheid TU Cas. The analysis allowed us to detect three new first overtone pulsators and to better define the behaviour of the Hertzsprung progression for classical Cepheids with P<3 d. Some uncertainties are left only for Cepheids located exactly on the discontinuity at P ≃3 d and for Cepheids with an apparently perfect sinusoidal light curve. At the present time, the Fourier decomposition cannot be used to discriminate safely between Pop. I and Pop. II stars. However, more numerous and precise measurements should allow us to clarify also these open questions.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - stars: oscillations - cepheids

Simbad objects: 37

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Number of rows : 37
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* BD Cas cC* 00 09 51.3937382112 +61 30 50.547772980   12.38 11.22     ~ 68 0
2 V* BF Cas cC* 00 14 03.2290682280 +60 59 10.556798892   13.74 12.47     ~ 47 0
3 V* CT Cas cC* 00 20 03.0752663760 +63 10 47.258360112   13.58 12.35     ~ 37 0
4 V* NO Cas cC* 00 24 04.6461814512 +61 20 29.931830124 13.22 12.506 11.393 11.062   G:I:e: 35 0
5 V* NY Cas cC* 00 40 23.1964946016 +58 37 06.679418124           ~ 44 0
6 V* HK Cas cC* 00 57 20.0470433760 +55 26 19.794269724           ~ 31 0
7 V* AW Cas cC* 01 16 01.2049532280 +61 37 14.549063304   13.52 12.14   10.321 ~ 44 0
8 V* CI Per cC* 02 05 02.1930621912 +57 08 34.564628940           ~ 44 0
9 V* GP Per cC* 04 23 19.1738872632 +44 14 12.741125964   13.40 14.20     ~ 34 0
10 V* EW Aur cC* 04 51 24.8479881912 +38 11 18.786824628   14.60       ~ 57 0
11 V* FF Aur cC* 04 55 18.1146521520 +39 58 46.982198784           ~ 48 0
12 V* AE Tau cC* 05 34 36.6543578832 +26 12 08.666367444     11.62     ~ 51 0
13 V* GT Aur cC* 05 36 26.7543661056 +44 35 28.907108988           ~ 35 0
14 V* V335 Aur cC* 05 42 29.2586930856 +37 38 46.816135116   13.62       ~ 50 0
15 V* EF Tau cC* 05 43 31.7947483440 +19 25 12.059319072     13.16     ~ 43 0
16 V* GV Aur cC* 05 44 14.0001638184 +37 35 12.736053492           ~ 42 0
17 V* AV Tau cC* 05 45 44.9164259904 +27 04 04.458297936   13.70       ~ 49 0
18 V* AX Aur cC* 05 46 50.8151097072 +31 35 52.506186252   13.54       ~ 50 0
19 V* CN Tau cC* 05 58 09.4170178128 +28 02 33.497411964       12.32   ~ 21 0
20 V* FT Mon cC* 06 21 36.0794129472 +04 04 24.841341696   11 12.844 12.23 11.496 ~ 53 0
21 V* VZ Mon cC* 06 31 14.5473360048 +11 51 01.244676636   15.20 13.658   11.636 ~ 41 0
22 V* CR Ser cC* 18 10 02.1322504368 -13 32 45.471161400   12.90 10.84     G5 81 0
23 V* SU Sct WV* 18 52 52.1084655528 -12 30 35.473678740     13.60   12.583 ~ 26 0
24 V* BC Aql cC* 19 17 24.1568276184 -09 04 51.593755800       13.045   ~ 30 0
25 V* EP Cyg cC* 19 45 03.6875454336 +31 19 50.910565296   13.96     11.272 ~ 53 0
26 V* V1162 Aql cC* 19 52 20.9909317368 -11 22 00.754130100   8.73 7.81     G2Ib 101 0
27 V* V547 Cyg cC* 19 57 46.1005717656 +35 38 09.868302744   14.92 13.20   11.519 ~ 53 0
28 V* V1020 Cyg cC* 19 59 09.0214872624 +32 41 43.593639720   15.60 14.00     ~ 39 0
29 V* GI Cyg cC* 19 59 33.7107718752 +33 44 45.828351024   13.20 11.69   10.014 ~ 63 0
30 V* GL Cyg cC* 20 03 34.7010205104 +39 09 34.732954656   14.20 13.11     F5 49 0
31 V* V1033 Cyg cC* 20 05 20.6650542528 +32 39 32.806824120     12.60 12.59   ~ 50 0
32 V* V554 Cyg cC* 20 07 21.1947280224 +40 10 41.186253072   15.33       ~ 28 0
33 V* V495 Cyg cC* 20 15 58.3269459744 +35 00 53.006262336   12.01 10.75     ~ 57 0
34 V* V1046 Cyg cC* 20 16 47.4956607528 +36 32 59.860814496           ~ 41 0
35 V* V356 Cyg cC* 21 07 46.5999817608 +46 44 13.178580432   13.74 12.25     ~ 38 0
36 V* V621 Cyg cC* 21 32 40.4256984264 +49 12 45.044508276   12.89 11.74 11.38   ~ 35 0
37 V* CE Cas ** 23 58 09.313 +61 12 49.26     10.63     F9Ib+F8Ib 135 0

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