Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Nyeredzi dziri mukati mechikamu chendima isina kugadzikana inoyambuka nhevedzano huru dzinonzi Delta Scuti variables. Aya mazita akatorwa kubva kunyeredzi yechiratidzo chezviitiko izvi: Delta Scuti. Delta Scuti inoshanduka kazhinji inobva pakirasi ye spectral A2 kusvika ku F8, uye kirasi ye stellar luminosity yeIII (subgiants) kusvika kuV (main sequence stars). Idzo ndidzo dzinosiyana-siyana dzenguva pfupi dzine mwero wenguva dzose wokudengenyeka pakati pe0.025 ne0.25 mazuva. Nyeredzi dzeDelta Scuti dzine zvinhu zvakawanda zvakafanana neZuva (ona nyeredzi dzePopulation I) uye pakati pe1.5 ne2.5 M<unk>. Chiyero chokurova kwe IK Pegasi A chakayerwa pa 22,9 kutenderera pazuva, kana kuti kamwe pamazuva 0.044. Nyanzvi dzenyeredzi dzinorondedzera simbi yenyeredzi sehuwandu hwezvinhu zvemakemikari zvine nhamba yeatomu yakakwirira kupfuura yehelium. Izvi zvinoyerwa nokuongororwa kwemhepo yakapoteredza denga, kwozoteverwa nokuenzanisa nemigumisiro inotarisirwa kubva kumamodeli enyeredzi akaverengwa. Muchiitiko che IK Pegasus A, kuwanda kwesimbi kunofungidzirwa kuri [M/H] = +0.07 ± 0.20. Iyi notation inopa logarithm yechiyero chezvinhu zvesimbi (M) ku hydrogen (H), kubvisa logarithm yechiyero chesimbi yeZuva. (Saka kana nyeredzi yacho ichienzana nesimbi yakawanda yeZuva, kukosha uku kuchava zero.) Logarithmic kukosha kwe 0.07 yakaenzana ne chaiyo metallicity chiyero che 1.17, saka nyeredzi inenge 17% yakapfuma muzvinhu zvesimbi kupfuura Zuva. Zvisinei, mwero wokukanganisa nokuda kwomugumisiro uyu wakakura zvikuru.  Mubvunzo: Nyeredzi dzinonzi Delta Scuti dzinosiyana-siyana dziripo muchikamu chipi chenzvimbo?
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