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Avrasya Ekonometri �statistik ve Ampirik Ekonomi DergisiYl:2021 Say: 18 Alan: statistik

nal Halit ZDEN , Kubilay ERLK
SINIFLARINA GRE TE GEZEGENLERN FARKLILIKLARININ KRUSKAL WALLS YNTEM LE BELRLENMES
 
Kepler uzay arac sayesinde 2600 adetten fazla te gezegen onaylanmtr. Onaylanan te gezegenler ana yldzlarna gre snflandrlmaktadr. Bu almada ana yldz zelliklerine gre snflandrlan te gezegenlerin snflarna gre hangi zelliklerinin deitii ve hangi snflar iin bu zelliklerin farkllk gsterdiinin tespit edilmesi amalanmtr. Ayrca ana yldz zelliklerine gre snflandrma yerine alternatif bir yntemin kullanlmas iin ayrc faktrlerin bulunmas da almann dier bir amacdr. Aratrmada NASAnn oluturmu ve daha sonra bilim insanlar tarafndan dzenlemi olan The NASA Exoplanet Archive: Data and Tools for Exoplanet Research adl veri seti kullanlmtr. almanda F, G, K, M snflarnda bulunan 2275 te gezegen ve bu te gezegenlere ait yldz snf, yrnge dnemi, gei dnemi, etki parametresi, transit sresi (saat), transit derinlik (milyonda ap), gezegen yarap (gezegen yarap/dnya yarap), denge scakl (kelvin), gnelenme ak (dnya ak), transit sinyalden grltye gei, yldz etkili scaklk, yldz yzey yer ekimi, yldz yarap (yldz yarap/dnya yarap), sa ykseli, sapma ve kepler band deerleri kullanlmtr. almada ayrc zelliklerin bulunmas iin ANOVA analizinin parametrik olmayan alternatifi Kruskal-Wallis analizi kullanlmtr. Yaplan Kruskal Wallis analizinden sonra gei dnemi, transit sresi (saat), transit derinlik (milyonda ap), gezegen yarap (dnya yarap), denge scakl (kelvin), gnelenme ak (dnya ak), transit sinyalden grltye gei, yldz etkili scaklk, yldz yzey yer ekimi, yldz yarap (dnya yarap) ve kepler band deikenleri iin yldz snflarndan en az birinde istatistiksel olarak anlaml bir farklln bulunduu tespit edilmitir.Transit derinlii, denge scakl, gnelenme ak, yldz etkili scaklk, yldz yzey yer ekimi ve yldz yarap deikenlerinde tm snf gruplar arasnda istatistiksel olarak anlaml bir farkllk tespit edilmitir. Belirtilen deikenler te gezegenlerin snflandrlmasnda ayrc zellikler olarak kullanlabilirler

Anahtar Kelimeler: Cce Gezegenler, Kepler, Kruskal Wallis, Snflandrma


DETERMINING THE DIFFERENCES OF EXOPLANETS ACCORDING TO THEIR CLASSES BY KRUSKAL WALLIS METHOD
 
More than 2600 exoplanets have been confirmed thanks to the Kepler spacecraft that NASA sent in 2009. The confirmed exoplanets are classified by their parent stars. In this study, it is aimed to determine which properties of the exoplanets, which are classified by their main stellar properties, differ according to their classes and for which classes these properties differ. In addition, finding differential factors for the use of an alternative method instead of classification according to the main star features is another purpose of the study.. In the study, 2275 exoplanets in F, G, K, M classes and the star class belonging to these exoplanets, their orbital period, transit epoch, impact parameter, transit duration (hour), transit depth (million diameter), planetary radius (planet radius / earth radius), equilibrium temperature (kelvin), insolation flux (earth flux), transit signal-to-noise, stellar effective temperature, stellar surface gravity, stellar radius (stellar radius / earth radius), right ascention, declination and kepler band values were used. The Kruskal-Wallis analysis, was used to find distinctive features in the study, it has been determined that there is a statistically significant difference in at least one of the star classes for the variables of transit epoch, transit duration (hour), transit depth (millionth diameter), planetary radius (earth radius), equilibrium temperature (kelvin), insolation flux (earth flux ), transit signal-to-noise, stellar effective temperature, stellar surface gravity, stellar radius (earth radius) and kepler band. A statistically significant difference was found among all class groups in the variables of transit depth, equilibrium temperature, insolation flow, stellar temperature, stellar surface gravity and stellar radius. The specified variables can be used as distinguishing features in the classification of exoplanets.

Keywords: Classification, Exoplanets, Kepler, Kruskal Wallis


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