Search results
Results from the WOW.Com Content Network
The spectral class of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters O, B, A, F, G, K, and M, a sequence from the hottest (O type) to the coolest (M type).
By the end of the reign of Aurangzeb in the early 1700s, the common language around Delhi began to be referred to as Zaban-e-Urdu, [33] a name derived from the Turkic word ordu (army) or orda and is said to have arisen as the "language of the camp", or "Zaban-i-Ordu" means "Language of High camps" [32] or natively "Lashkari Zaban" means ...
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
A subgiant is a star that is brighter than a normal main-sequence star of the same spectral class, but not as bright as giant stars. The term subgiant is applied both to a particular spectral luminosity class and to a stage in the evolution of a star.
In Chinese, 星宿 (Xīng Xiù), meaning Star, refers to an asterism consisting of Alphard, τ 1 Hydrae, τ 2 Hydrae, ι Hydrae, 26 Hydrae, 27 Hydrae, HD 82477 and HD 82428. [16] Consequently, Alphard itself is known as 星宿一 (Xīng Xiù yī), "the First Star of Star". [17] In ancient China it formed part of an asterism called the "red bird".
The letter "M" in this designation means that it is a red star belonging to the M spectral class and therefore has a relatively low photospheric temperature; the "Ia-ab" suffix luminosity class indicates that it is an intermediate-luminosity supergiant, with properties partway between a normal supergiant and a luminous supergiant. Since 1943 ...
This page was last edited on 14 July 2021, at 17:04 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Tarikh (Arabic: تاريخ, romanized: Tārīkh) is an Arabic word meaning "date, chronology, era", whence by extension "annals, history, historiography". It is also used in Persian, Urdu, Bengali and the Turkic languages. It is found in the title of many historical works.