The Dog Stars: The hope-filled story of a world changed by global catastrophe
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The Dog Stars: The hope-filled story of a world changed by global catastrophe
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Spahn, Mark; Hadamitzky, Wolfgang; Fujie-Winter, Kimiko (1996). The Kanji dictionary. Tuttle language library. Tuttle Publishing. p.724. ISBN 0-8048-2058-9. Walter Sydney Adams was the first to discover that Sirius B was a white star. He used a 60-inch reflector at Mount Wilson Observatory and, while observing the star’s spectrum, he concluded that it was a whitish star. Astronomers later determined that the star was a white dwarf, only the second one to be discovered. Bragança, Pedro (15 July 2003). "The 10 Brightest Stars". SPACE.com. Archived from the original on 16 June 2009 . Retrieved 4 August 2006.
Croswell, Ken (27 July 2005). "The life and times of Sirius B". astronomy.com . Retrieved 19 October 2007. In 2005, data from the Hubble Space Telescope helped astronomers determine that Sirius B has almost the diameter of the Earth, around 12,000 kilometres or 7,500 miles, and a mass 98 percent that of the Sun. This was the first time that astronomers were able to accurately measure the mass of Sirius B. Facts Along with the bright stars Procyon in Canis Minor and Betelgeuse in Orion constellation, Sirius forms the Winter Triangle, a familiar asterism in the night sky, and easy to spot in winter evenings in the northern hemisphere. Henderson G, Stanbury M (1988). The Sirius:Past and Present. Sydney: Collins. p.38. ISBN 0-7322-2447-0.Sirius is colloquially known as the " Dog Star", reflecting its prominence in its constellation, Canis Major (the Greater Dog). [19] The heliacal rising of Sirius marked the flooding of the Nile in Ancient Egypt and the " dog days" of summer for the ancient Greeks, while to the Polynesians, mostly in the Southern Hemisphere, the star marked winter and was an important reference for their navigation around the Pacific Ocean. Siess, Lionel (2000). "Computation of Isochrones". Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles . Retrieved 24 March 2007. Liddell, Henry G.; Scott, Robert (1980). Greek-English Lexicon (Abridgeded.). Oxford: Oxford University Press. ISBN 0-19-910207-4. Schlosser, W.; Bergmann, W. (November 1985). "An early-medieval account on the red colour of Sirius and its astrophysical implications". Nature. 318 (6041): 45–46. Bibcode: 1985Natur.318...45S. doi: 10.1038/318045a0. S2CID 4323130.
Sirius has over 50other designations and names attached to it. [71] In Geoffrey Chaucer's essay Treatise on the Astrolabe, it bears the name Alhabor and is depicted by a hound's head. This name is widely used on medieval astrolabes from Western Europe. [20] In Sanskrit it is known as Mrgavyadha "deer hunter", or Lubdhaka "hunter". As Mrgavyadha, the star represents Rudra ( Shiva). [113] [114] The star is referred to as Makarajyoti in Malayalam and has religious significance to the pilgrim center Sabarimala. [115] In Scandinavia, the star has been known as Lokabrenna ("burning done by Loki", or "Loki's torch"). [116] In the astrology of the Middle Ages, Sirius was a Behenian fixed star, [117] associated with beryl and juniper. Its astrological symbol was listed by Heinrich Cornelius Agrippa. [118] Cultural significance [ edit ]
The binary companion was discovered by the German astronomer Friedrich Bessel, who deduced that the star had an unseen companion from the changes in the proper motion of the main component. Makemson, Maud Worcester (1941). The Morning Star Rises: An Account of Polynesian Astronomy. Yale University Press. Bibcode: 1941msra.book.....M. The Dog Stars is a post-apocalyptic novel by Peter Heller. It chronicles the struggles of a man trying find human connection after a super-flu has wiped out almost the entire human population.
Koester, D.; Chanmugam, G. (1990). "Physics of white dwarf stars". Reports on Progress in Physics. 53 (7): 837–915. Bibcode: 1990RPPh...53..837K. doi: 10.1088/0034-4885/53/7/001. S2CID 250915046. a b Holberg, J. B.; Barstow, M. A.; Bruhweiler, F. C.; Cruise, A. M.; Penny, A. J. (1998). "Sirius B: A New, More Accurate View". The Astrophysical Journal. 497 (2): 935–942. Bibcode: 1998ApJ...497..935H. doi: 10.1086/305489.The Egyptians also saw Sirius as the doorway to the afterlife and would not bury their passed family members during the 70 days the star was hidden from view – the 35 days before and after Sirius conjuncted the Sun. They believed the doorway was closed when the star was out of view. In 2015, 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 11times more massive than Jupiter at 0.5AU distance from SiriusA, 6–7times the mass of Jupiter at 1–2AU distance, and down to around 4times the mass of Jupiter at 10AU distance. [86] Similarly, Lucas and colleagues did not detect any companions around SiriusB. [87] Sirius A [ edit ] Comparison of SiriusA and the Sun, to scale and relative surface brightness Henry, Teuira (1907). "Tahitian Astronomy: Birth of Heavenly Bodies". The Journal of the Polynesian Society. 16 (2): 101–04. JSTOR 20700813.
The only objects in the sky brighter than Sirius are the Moon, Venus, Jupiter, and occasionally Mercury and Mars. In ancient Mesopotamia, Sirius, named KAK.SI.SA 2 by the Babylonians, was seen as an arrow aiming towards Orion, while the southern stars of Canis Major and a part of Puppis were viewed as a bow, named BAN in the Three Stars Each tablets, dating to around 1100 BC. In the later compendium of Babylonian astronomy and astrology titled MUL.APIN, the arrow, Sirius, was also linked with the warrior Ninurta, and the bow with Ishtar, daughter of Enlil. [2] Ninurta was linked to the later deity Marduk, who was said to have slain the ocean goddess Tiamat with a great bow, and worshipped as the principal deity in Babylon. [3] The Ancient Greeks replaced the bow and arrow depiction with that of a dog. [4] Sirius A, the brightest star in the night sky, lies in Canis Major. Blood Knight: Bangley was basically waiting for the end of the world so that he could do nothing but kill people. Riddle for the Ages: Where did the flu come from? Where did the blood virus come from? Why is the environment changing? What's the deal with the Arabs? Are they really the ones flying the 747s overhead at the end of the novel?In ancient times, the Dog Star’s heliacal rising marked the flooding of the Nile in Egypt, while the Greeks associated it with the “dog days” of summer, referring to the period from July 3 to August 11, when the star rises in conjunction with the Sun. In India, the star is sometimes known as Svana, the dog of Prince Yudhistira, who set out of a long journey to find the kingdom of heaven with his four brothers. The journey was a difficult one and, one by one, the brothers abandoned the search. When Yudhistira reached the gates of heaven, Lord Indra welcomed him, but would not let Svana enter. The prince told him that he himself would not enter if his faithful servant was denied entrance. This is what the Lord wanted to hear, and he then allowed them both through the gates. To add to the controversy, Robert Temple’s book The Sirius Mystery, published in 1976, claims that the Dogon knew about the rings of Saturn and the four Galilean moons of Jupiter. Temple speculates that the Dogons, an ancient tribe who have worshipped Sirius for the past 5,000 years, had a direct connection with beings from Sirius. The brightest star seen from Earth, Sirius is recorded in some of the earliest astronomical records. Its displacement from the ecliptic causes its heliacal rising to be remarkably regular compared to other stars, with a period of almost exactly 365.25days holding it constant relative to the solar year. This rising occurs at Cairo on 19July ( Julian), placing it just before the onset of the annual flooding of the Nile during antiquity. [28] Owing to the flood's own irregularity, the extreme precision of the star's return made it important to the ancient Egyptians, [28] who worshipped it as the goddess Sopdet ( Ancient Egyptian: Spdt, "Triangle"; [a] Greek: Σῶθις}, Sō̂this), guarantor of the fertility of their land. [b]
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