
seetta andromeda

andromeda nakshathrasamoohathile oru nakshathravyoohamaanu seetta andromeday (seetta, ζ andromeday, ζ aandu). bhoomiyil ninnu ekadesham 189 prakashavarsham akaleyaan ithu.
seetta andromedayanu nakshathratthinte bair namam. ithinu flamsteed padavi 34 andromedy staaral kaattalogukalil mattu onniladhikam padanaamangalum undu.
sthalam.
andromeda enna vadakke nakshathrasamoohathilaanu nakshathratthinte sthaanam, athil η andromedic sesham, pouraanika raajakumaariyude nakshathravyoohathe prathinidheekarikkunna eee swabhaava aakruthiyil nakshathrangalil ettavum thekk randaamathe nakshathramaanith.
sisttam.
eee sisttam oru spectroscopic binaryaanu, athine sharashari prathyakshamaaya magnitude + 4.08 ulla ooranchu keey-type bheeman ennu tharamthirickunnu. aaa vasthuvinte deerghavrithaakrithiyilulla prakasham moolamundaakunna mattangal kaaranam, eee sisttam oru rs kaanam venaticorum-type variable staar koodiyaanu. athinte thelicham + 3.92 muthal + 4.14 vare vyathyaasappedunnu, 17.77 divasangalude kaalayalavil, athinte spectrum shakthavum variable aaya ca IIh, k lineukal kaanikkunnu. binaryude bhramanakaalakhattam 17.77 divasamaanu.
nerittulla imaging.
eee bainari sisttathinte praadhamika gadakamaaya "seetta andromede aaa", doppler imajing long-baseline infrared interferometry upayogichu nerittu chithreekaricha churukkam chila nakshathrangalil onnaanu. nerittulla imaging upayogichu namukk eee nakshathrathekkurichulla adhika vivarangal veendedukkaan kazhiyum.
direct imaging eee nakshathrathil staarspottukale (sooryante spottukalkku samanamaaya) nireekshikkaanum anuvadichu, avayude asamamaya vitharanam nakshathratthinte kaanthikakshethram solar dynamoyil ninnu vyathyasthamaaya oru samvidaanathiloodeyaanu srishtikkunnathennu kaanichu. pakaram nakshathratthinte suryanu samanamaaya deferential bhramanamaan nireekshikkappettath.
drishyasahacharanmaar.
grahanam nadakkunna binaryilekku (aa, ab, bainari a roopappeduthunnu) moonnu vishwal koottaalikale WDs rekhappeduthunnu. dii nakshathratthinte paralax alakkunnathu "gaya" aanu, athinte dooram orupakshe vidoora chuvanna bheemanaya seetta andromediyekkaal valare valuthaanennu theliyikkunnu. ettavum aduthulla koottaali bii, athupole oru pashchaathala vasthuvaan. sii ettu enna koottukaaran oru pothu sariyaaya chalanavum samanamaaya paralax pankidunnu.
peru.
chainees bhashayil, (), athaayath "kaalukal (nakshatram)", ζ andromeda, η andromeda, 65 pisium, ε andromeda, δ andromeda, π andromeda, ν andromeda, σ pisium, τ pisium, 91 pisium, y pisium, φ pisium, χ pisium, χ pisium, σ pisium enniva ulkkollunna oru nakshathrathe soochippikkunnu. thathfalamaayi, ζ andromedeyude chainees peru thanne (,) aanu.

