The Dog Stars: The hope-filled story of a world changed by global catastrophe

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Both the Māori people and the people of the Tuamotus recognized the figure of Canis Major as a distinct entity, though it was sometimes absorbed into other constellations. Te Huinga-o-Rehua, also called Te Putahi-nui-o-Rehua and Te Kahui-Takurua, ("The Assembly of Rehua" or "The Assembly of Sirius") was a Māori constellation that included both Canis Minor and Canis Major, along with some surrounding stars. [14] [15] Related was Taumata-o-Re See also: Sirius in fiction The position of Sirius on a radar map among all stellar objects or stellar systems within 9 light years (ly) from the map's center, the Sun (Sol). The diamond-shapes are their positions entered according to right ascension in hours angle (indicated at the edge of the map's reference disc), and according to their declination. The second mark shows each's distance from Sol, with the concentric circles indicating the distance in steps of one ly. Designations: Sirius, Dog Star, α Canis Majoris (α CMa), 9 Canis Majoris (9 CMa), Canicula, Al Shira, Sothis, Alhabor, Mrgavyadha, Lubdhaka, Tenrōsei, HD 48915, HR 2491, BD −16°1591, GCTP 1577.00 A/B, GJ 244 A/B, LHS 219, ADS 5423, LTT 2638, HIP 32349, B: EGGR 49, WD 0642-166

Duarte, Paulo Araújo. "Astronomia na Bandeira Brasileira". Universidade Federal de Santa Catarina. Archived from the original on 2 May 2008 . Retrieved 9 July 2009. Siess, Lionel (2000). "Computation of Isochrones". Institut d'Astronomie et d'Astrophysique, Université libre de Bruxelles . Retrieved 24 March 2007. The Hipparcos parallax for Sirius is only accurate to about ±0.04 light years, giving a distance of 8.6light years. [9] SiriusB is generally assumed to be at the same distance. SiriusB has a Gaia Data Release 3 parallax with a much smaller statistical margin of error, giving a distance of 8.709 ±0.005light years, but it is flagged as having a very large value for astrometric excess noise, which indicates that the parallax value may be unreliable. [11] Discovery of Sirius B [ edit ] Hubble Space Telescope image of SiriusA and SiriusB. The white dwarf can be seen to the lower left. The diffraction spikes and concentric rings are instrumental effects.Olano, C. A. (2001). "The Origin of the Local System of Gas and Stars". The Astronomical Journal. 121 (1): 295–308. Bibcode: 2001AJ....121..295O. doi: 10.1086/318011. S2CID 120137433. The orbital motion of the Sirius binary system brings the two stars to a minimum angular separation of 3 arcseconds and a maximum of 11arcseconds. At the closest approach, it is an observational challenge to distinguish the white dwarf from its more luminous companion, requiring a telescope with at least 300mm (12in) aperture and excellent seeing conditions. After a periastron occurred in 1994, [c] In Scandinavian countries, the star has been known as Loki’s torch, or Lokabrenna, which literally means “burning done by Loki.” a b c Adelman, Saul J. (8–13 July 2004). "The Physical Properties of normal A stars". Proceedings of the International Astronomical Union. Vol.2004. Poprad, Slovakia: Cambridge University Press. pp.1–11. Bibcode: 2004IAUS..224....1A. doi: 10.1017/S1743921304004314. The proper name "Sirius" comes from the Latin Sīrius, from the Ancient Greek Σείριος ( Seirios, "glowing" or "scorcher"). [107] The Greek word itself may have been imported from elsewhere before the Archaic period, [108] one authority suggesting a link with the Egyptian god Osiris. [109] The name's earliest recorded use dates from the 7thcentury BC in Hesiod's poetic work Works and Days. [108] In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) [110] to catalog and standardize proper names for stars. The WGSN's first bulletin of July2016 [111] included a table of the first two batches of names approved by the WGSN, which included Sirius for the star αCanis MajorisA. It is now so entered in the IAU Catalog of Star Names. [112]

Sirius B is 10,000 times less luminous, but a brighter X-ray source of the two. It orbits around the primary component in a wide horizontal ellipse when observed from Earth. The star has an estimated surface temperature of 25,200 K. It is the nearest known white dwarf. A review of the book 'The Dog Stars'by Peter Heller - The Boston Globe". BostonGlobe.com . Retrieved 2016-12-18. In 1717, Edmond Halley discovered the proper motion of the hitherto presumed fixed stars [37] after comparing contemporary astrometric measurements with those from the second century AD given in Ptolemy's Almagest. The bright stars Aldebaran, Arcturus and Sirius were noted to have moved significantly; Sirius had progressed about 30 arcminutes (about the diameter of the Moon) to the southwest. [38] Frommert, Hartmut; Kronberg, Christine (26 April 2003). "The Ursa Major Moving Cluster, Collinder 285". SEDS. Archived from the original on 20 December 2007 . Retrieved 22 November 2007.The diameter of the primary star, Sirius A, was first measured by Robert Hanbury Brown and Richard Q. Twiss at Jodrell Bank in 1959. Aurière, M.; etal. (November 2010). "No detection of large-scale magnetic fields at the surfaces of Am and HgMn stars". Astronomy and Astrophysics. 523: A40. arXiv: 1008.3086. Bibcode: 2010A&A...523A..40A. doi: 10.1051/0004-6361/201014848. S2CID 118643022. Holberg, J. B. (2005). "How Degenerate Stars Came to be Known as White Dwarfs". Bulletin of the American Astronomical Society. 37 (2): 1503. Bibcode: 2005AAS...20720501H. Stellar system [ edit ] The orbit of SiriusB around A, as seen from Earth (slanted ellipse). The wide horizontal ellipse shows the true shape of the orbit (with an arbitrary orientation) as it would appear if viewed straight on. A Chandra X-ray Observatory image of the Sirius star system, where the spike-like pattern is due to the support structure for the transmission grating. The bright source is SiriusB. Credit: NASA/SAO/CXC

The only objects in the sky brighter than Sirius are the Moon, Venus, Jupiter, and occasionally Mercury and Mars.After the End: Most of the population has died from a super flu. Many of the survivors of that are suffering from a blood disease. Arnott, William Geoffrey (1955). "A Note on Alexis' Opora". Rheinisches Museum für Philologie. 98 (4): 312–15. JSTOR 41243800 . Retrieved 20 June 2023. From Nobody to Nightmare: Bangley was no one of consequence or training before the end of civilization. Now he's a bloodthirsty one-man-army with countless notches on his belt. The Egyptians believed that Sirius caused the floods and they noted that the star’s heliacal rising occurred every 365.25 days rather than 365 days. The correction in the length of the calendar year was eventually incorporated in the Julian calendar.