Sirius deutsch - can suggestDas redaktionell gepflegte PONS Online-Wörterbuch, die Textübersetzung und jetzt auch eine Datenbank mit mehreren hundert Millionen von authentischen Übersetzungen aus dem Internet, die verdeutlichen, wie ein Ausdruck in der Fremdsprache tatsächlich verwendet wird. Um den Jahreswechsel kulminiert Sirius gegen Mitternacht und ist daher die ganze Nacht über zu sehen. In welchem Forum wollen Sie eine neue Anfrage starten? Sirius said Voldemort was after something. Dieser Sternstrom besteht aus etwa bis Sternen, die eine gemeinsame Bewegung durch den Raum zeigen und vermutlich zusammen als Mitglieder eines offenen Sternhaufens entstanden, dann aber weit auseinanderdrifteten.
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Citizens of the world, Welcome to Sirius Disclosure. Twiss in at Jodrell Bank using their stellar intensity interferometer.
Around the year CE, the Greek astronomer of the Roman period Claudius Ptolemy described Sirius as reddish, along with five other stars, Betelgeuse , Antares , Aldebaran , Arcturus and Pollux , all of which are of orange or red hue.
The 1st-century poet Marcus Manilius described it as "sea-blue", as did the 4th century Avienus. In , German astronomers Wolfhard Schlosser and Werner Bergmann published an account of an 8th-century Lombardic manuscript, which contains De cursu stellarum ratio by St.
The authors proposed this was further evidence Sirius B had been a red giant at the time. Gregory had been referring to Arcturus.
The possibility that stellar evolution of either Sirius A or Sirius B could be responsible for this discrepancy has been rejected by astronomers on the grounds that the timescale of thousands of years is too short and that there is no sign of the nebulosity in the system that would be expected had such a change taken place.
To the naked eye, it often appears to be flashing with red, white and blue hues when near the horizon. From the Southern Hemisphere in early July, Sirius can be seen in both the evening where it sets after the Sun , and in the morning where it rises before the Sun.
Sirius, along with Procyon and Betelgeuse , forms one of the three vertices of the Winter Triangle to observers in the Northern Hemisphere. Due to precession and slight proper motion , Sirius will move further south in the future.
Sirius can be observed in daylight with the naked eye under the right conditions. Ideally, the sky should be very clear, with the observer at a high altitude, the star passing overhead, and the Sun low on the horizon.
A periastron occurred in [c] and the pair have since been moving apart, making them easier to separate with a telescope.
Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU [d] roughly the distance between the Sun and Uranus and a period of Currently 10, times less luminous in the visual spectrum, Sirius B was once the more massive of the two.
Early in its lifespan it was thought to have been two bluish white stars orbiting each other in an elliptical orbit every 9.
This may be an indication of dust in the system, and is considered somewhat unusual for a binary star. In , Vigan and colleagues used the VLT Survey Telescope to search for evidence of substellar companions, and were able to rule out the presence of giant planets 11 times more massive than Jupiter at 0.
Stellar models suggest that the star formed during the collapsing of a molecular cloud , and that after 10 million years, its internal energy generation was derived entirely from nuclear reactions.
The core became convective and used the CNO cycle for energy generation. At this point it will pass through a red giant stage, then settle down to become a white dwarf.
Sirius A is classed as an Am star because the spectrum shows deep metallic absorption lines ,  indicating an enhancement in elements heavier than helium, such as iron.
The high surface content of metallic elements is unlikely to be true of the entire star; rather the iron-peak and heavy metals are radiatively levitated towards the surface.
Sirius B is one of the more massive white dwarfs known. With a mass of 1. A white dwarf forms only after the star has evolved from the main sequence and then passed through a red giant stage.
This occurred when Sirius B was less than half its current age, around million years ago. While it passed through the red giant stage, Sirius B may have enriched the metallicity of its companion.
This star is primarily composed of a carbon—oxygen mixture that was generated by helium fusion in the progenitor star. Since , there have been observed irregularities in the orbits of Sirius A and B with an apparent periodicity of 6—6.
A study found such a companion to likely exist, with a mass of roughly 0. More recent and accurate astrometric observations by the Hubble Space Telescope ruled out the possibility of such an object entirely.
The study predicted an astrometric movement of roughly 90 mas 0. This ruled out any objects orbiting Sirius A with more than 0. They were additionally able to rule out any companions to Sirius B with more than 0.
Effectively, there are almost certainly no additional bodies in the Sirius system larger than a small brown dwarf or large exoplanet.
The Ursa Major Group is a set of stars that share a common motion through space and were once formed as members of an open cluster , which has since become gravitationally unbound.
The other two are the Hyades and the Pleiades , and each of these clusters consists of hundreds of stars. It was discovered during a statistical analysis of Gaia data.
The cluster is over a thousand times further away from us than the star system. Sirius has over 50 other designations and names attached to it.
This name is widely used on medieval astrolabes from Western Europe. As Mrgavyadha, the star represents Rudra Shiva. Its astrological symbol was listed by Heinrich Cornelius Agrippa.
Many cultures have historically attached special significance to Sirius, particularly in relation to dogs. The Romans knew these days as dies caniculares , and the star Sirius was called Canicula, "little dog.
In extreme cases, a foaming dog might have rabies, which could infect and kill humans they had bitten. In Iranian mythology, especially in Persian mythology and in Zoroastrianism , the ancient religion of Persia , Sirius appears as Tishtrya and is revered as the rain-maker divinity Tishtar of New Persian poetry.
Beside passages in the sacred texts of the Avesta , the Avestan language Tishtrya followed by the version Tir in Middle and New Persian is also depicted in the Persian epic Shahnameh of Ferdowsi.
Due to the concept of the yazatas , powers which are "worthy of worship", Tishtrya is a divinity of rain and fertility and an antagonist of apaosha , the demon of drought.
In this struggle, Tishtrya is depicted as a white horse. In Chinese astronomy Sirius is known as the star of the "celestial wolf" Chinese and Japanese: Several cultures also associated the star with a bow and arrows.
The ancient Chinese visualized a large bow and arrow across the southern sky, formed by the constellations of Puppis and Canis Major. In this, the arrow tip is pointed at the wolf Sirius.
A similar association is depicted at the Temple of Hathor in Dendera , where the goddess Satet has drawn her arrow at Hathor Sirius. Known as "Tir", the star was portrayed as the arrow itself in later Persian culture.
From there is it sent via the Sun to the god of Earth Sanat Kumara , and finally through the seven Masters of the Seven Rays to the human race.
The Dogon people are an ethnic group in Mali , West Africa, reported by some researchers to have traditional astronomical knowledge about Sirius that would normally be considered impossible without the use of telescopes.
They also refer to a third star accompanying Sirius A and B. This has been the subject of controversy and speculation. All agree, however, that they learned about the star from Griaule.
Noah Brosch explained in his book Sirius Matters that the cultural transfer of relatively modern astronomical information could have taken place in , when a French expedition arrived in Central West Africa to observe the total eclipse on April In the religion of the Serer people of Senegal , the Gambia and Mauritania , Sirius is called Yoonir from the Serer language and some of the Cangin language speakers, who are all ethnically Serers.
The star Sirius is one of the most important and sacred stars in Serer religious cosmology and symbolism. The Serer high priests and priestesses, Saltigues , the hereditary "rain priests"  chart Yoonir in order to forecast rainfall and enable Serer farmers to start planting seeds.
In Serer religious cosmology, it is the symbol of the universe. Sirius is a frequent subject of science fiction ,  and has been the subject of poetry.
From Wikipedia, the free encyclopedia. Brightest star in the night sky. For other uses of Sirius B, see Sirius B disambiguation. For other uses of Sirius, see Sirius disambiguation.
Serer religion and Saltigue. The goddess Sopdet was later syncretized with the goddess Isis , Sah was linked with Osiris , and Sopdu was linked with Horus.
The day period of the absence of Sirius from the sky was understood as the passing of Sopdet-Isis and Sah-Osiris through the Egyptian underworld.
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