WOH G64 took its name from the initials of the surname of the three authors and from the place it occupied in their catalog. Davis & Beasor (2020) explains why most of these, and their own 2018 paper, produce the wrong luminosity. [2] The word ‘maser’ stands for microwave amplification by stimulated emission of radiation. The discovery of OH masers was a clear indication that WOH G64 belongs to a particular category of highly evolved stars — the so-called OH/IR stars. The Levesque team instead found the effective temperature of WOH G64 different from the value reported up to then in the literature — 3,400 K instead of 3,200. A similar characteristic could well be explained by the presence, although not detected by observation, of a main sequence O-type star, with a brightness of around 100,000 solar luminosities. These produce some wildly-different estimates of the luminosity of this strange object. According to the calculations by the Ohnaka team, the torus, whose inner edge is more or less 15 stellar radii away from the red supergiant, contains about 1.7 hundredth of solar mass in dust and from 3 to 9 solar masses in gas! ... a red supergiant or hypergiant located in Ara constellation, WOH G64 (1,540 – 1,730), a red ...www.constellation-guide.com, Jul 26, 2018 ... WOH G64, measuring 1,504 to 1,730 solar radii. Despite the “slimming cure,” WOH G64 remained an extraordinarily large and luminous star. A red supergiant that shone more than 600,000 Suns had to have landed on the main sequence with a mass of 40 solar masses or more, or at least that was what the stellar evolution theoretical models indicated. Astronomers get the clue from some emission lines in the spectra of the supergiant, the radial velocity of which does not correspond to that of the star. The extreme red hypergiant ... "The Physical Properties of the Red Supergiant WOH G64: The Largest Star Known?". Welcome to another experiment in Universe Sandbox 2, for science. The intriguing title of the article, whose first author was the astronomer Emily Levesque, now an assistant professor at the University of Washington, was about a huge and very bright star, discovered in 1981 by a trio of Swedish astronomers: Bengt Westerlund, Nils Olander, and B. Hedin. Below is a list of the largest stars currently known, ordered by radius. An astrophysical maser is a natural source of amplified radiation emitted in the microwave region. In short, WOH G64 came out of the studies conducted by the teams of Ohnaka and Levesque partly downsized, a little less exceptional than it had seemed in the ’80s and ’90s of the last century, even though it still was an object with extreme characteristics. In other words, its dust and gas shroud does not obscure WOH G64 completely. If it were placed in the centre of our solar system, it would extend well beyond the orbit of Jupiter, possibly even Saturn. In April 2009, a study entitled “The physical properties of the red supergiant WOH G64: the largest known star?” was published in The Astronomical Journal. Levesque and colleagues calculated a bolometric magnitude of −8.9 for WOH G64, very similar to the value reported in the study by Ohnaka and others. Now, which sources are we going to use? The spectroscopic analysis showed that at several stellar radii away from WOH G64, there were water masers, SiO (silicon oxide) masers, and, above all, OH (the hydroxyl radical) masers. https://www.youtube.com/watch?v=oOog-I9z0mQ — Preceding unsigned comment added by Joey P. - THE OFFICIAL (talk • contribs) 06:28, 8 September 2017 (UTC), I have heard of fake news before, but what they didn't know is that they were right in real life... ----Joey P. - THE OFFICIAL 00:38, 14 September 2017 (UTC), Good. 2 HV 888 (WOH S140) 1.974: Riesenstern in der großen Magellanschen Wolke.

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