The heliacal rising of Sirius in ancient Egypt : a source of historical dating Visibility of a star in the sky The heliacal rising of Sirius under the reign of Sesostris ? The heliacal rising of Sirius under the reign of Amenhotep I The heliacal rising of Sirius under the reign of Thutmosis III The heliacal rising of Sirius under the reign of Ptolemy III The heliacal rising of Sirius under the reign of Ptolemy IV The heliacal rising of Sirius on July, the 20th, 139 AD The date of foundation of the temple of Hathor at Dendara What bring atmospherical models ...