Galaxy activity and interaction: the optical view
نویسندگان
چکیده
منابع مشابه
The Nearby Optical Galaxy Sample: the Local Galaxy Luminosity Function
In this paper we derive the galaxy luminosity function from the Nearby Optical Galaxy (NOG) sample, which is a nearly complete, magnitude–limited (B ≤14 mag), all–sky sample of nearby optical galaxies (∼6400 galaxies with cz < 5500 km s−1 ). For this local sample, we use galaxy distance estimates based on different peculiar velocity models. Therefore, the derivation of the luminosity function i...
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این مطالعه به دو روش کمی و کیفی و با هدف بررسی استراتژی های فراشناختی فراگیران زبان انگلیسی به عنوان زبان خارجی در دو آزمون نوشتن و نوشتن ترکیبی انجام پذیرفت. در بخش کمی برای سنجش میزان استراتژی های فراشناختی از یک پرسشنامه که بر اساس مدل بکمن و پالمر (1996) ساخته شده بود استفاده شد. پایایی و روایی سازه ی پرسشنامه هنگام مطالعه ی پایلوت و روایی محتوای آن با جمع آوری نظرات نُه متخصص در رشته سنجیده...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten: A Journal on all Fields of Astronomy
سال: 1997
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.2113180413