NGC 5408 是在 半人馬座 的一個 不規則星系。 它是由 約翰·赫歇爾 於1834年6月5日發現的 [3]。 NGC 5408位於 半人馬座A/M83星系團 的M83子群附近，這是一個相對較近的 星系群。 然而， …

NGC 5408 is an irregular galaxy in the constellation Centaurus. It was discovered by John Herschel on June 5, 1834. [3] NGC 5408 is located near the M83 Subgroup of the Centaurus …

2016年1月18日 · Astronomers had long mistaken NGC 5408 for a planetary nebula, an expelled cloud of material from an aging star. Instead, bucking labels, NGC 5408 turned out to be an …

2009年11月10日 · Swift X-ray observations of galaxy NGC 5408 indicate its ultraluminous X-ray source undergoes periodic changes every 115.5 days. This cycle, astronomers suspect, is …

2023年9月14日 · Irregular galaxy NGC 5408 is associated with an object known as an ultraluminous X-ray source, dubbed NGC 5408 X-1, one of the best studied of its class. These …

NGC 5408 is a Irregular Galaxy in the Centaurus constellation. NGC 5408 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its …

The ultraluminous X-ray source, NGC 5408 X-1, is one of only three such objects to show a quasi-periodic oscillation (QPO) in its power spectrum. Previous analysis of this signal identified it …

2016年4月28日 · The irregular galaxy NGC 5408 viewed by the NASA/ESA Hubble Space Telescope. The galaxy is located some 16 million light-years away and hosts a very bright …

NGC 5408 X-1 is a well-studied ultraluminous X-ray source (ULX) that has been seen to emit in X-rays persistently above the Eddington limit of a stellar-mass black hole for years. In this paper …

NGC 5408 is an Emission-Line Galaxy located in the constellation of Centaurus in the southern hemisphere. NGC 5408's distance from Earth is 16,242,587.61 light years. NGC 5408 is called …