2009ApJ...695..496P

Query : 2009ApJ...695..496P

2009ApJ...695..496P - Astrophys. J., 695, 496-502 (2009/April-2)

A fast chi-squared technique for period search of irregularly sampled data.

PALMER D.M.

Abstract (from CDS):

A new, computationally and statistically efficient algorithm, the Fast χ2 algorithm (Fχ2), can find a periodic signal with harmonic content in irregularly sampled data with nonuniform errors. The algorithm calculates the minimized χ2 as a function of frequency at the desired number of harmonics, using fast Fourier transforms to provide O(Nlog N) performance. The code for a reference implementation is provided.

Abstract Copyright: ∼

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

Simbad objects: 7

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Number of rows : 7
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* AD Ari EB* 02 17 45.3994096032 +18 27 18.005518404 7.760 7.730 7.430     F0 35 0
2 V* W Tri AB* 02 41 30.5700362472 +34 30 57.974434992   9.40 7.91     M5III 37 0
3 HD 106343 s*b 12 14 16.9257756576 -64 24 30.669334128 5.58 6.292 6.235     B1.5Ia 93 0
4 V* V1203 Cen EB* 14 11 47.9896424592 -62 01 34.857517872   7.73 7.71     B4/5III/IV 21 0
5 V* V1711 Sgr RV* 20 01 07.9860343992 -30 30 38.905165224   11.31 10.62 10.51   F6CH+2 52 0
6 V* AR Lac RS* 22 08 40.8182089680 +45 44 32.107863120 7.09 6.83 6.11     K0IVe+G5IV 745 0
7 HD 220633 ** 23 25 40.5661312865 -42 53 59.260353561           F5/6V 18 0

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