اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدIZw18, or the picture of Dorian Gray: the more you watch it, the older it gets
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M. Tosi
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IZw18 has been recurrently claimed to be a young galaxy, but stars of increasingly older ages are found every time deeper magnitude levels are reached with high-resolution photometry: from the original few Myrs to, possibly, several Gyrs. We summarize the history of IZw18s age and an HST project which will allow us to derive both its distance and age.
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