Smertrios
In Gallo-Roman religion, Smertrios or Smertrius was a god of war worshipped in Gaul and Noricum. In Roman times he was equated with Mars. His name contains the same root as that of the goddess Rosmerta and may mean "The Purveyor" or "The Provider", a title rather than a true name. Smertulitanus may be a variant name for the same god.
Smertrius is one of the Gaulish gods depicted on the Pillar of the Boatmen, discovered in Paris. Here is depicted as a well-muscled bearded man confronting a snake which rears up in front of him. The god brandishes an object which has usually been interpreted as a club but which rather resembles a torch or firebrand.
The normal interpretation of the god's attribute as a club has led to the identification, by modern scholars, of Smertrius and Hercules. Other evidence links Smertrius with the Celtic version of Mars: at Möhn near Trier, a spring sanctuary was dedicated to Mars Smertrius and his consort Ancamna. Coins found here indicate that there was a shrine here before the Roman period. Another Treveran inscription links Mars and Smertrius. Smertrius himself is known outside Gaul, for example on a fragmentary inscription at Grossbach in Austria.
HD 149026 b
HD 149026 b, also named Smertrios, is an extrasolar planet approximately 257 light-years from the Sun in the constellation of Hercules.
The 2.8766-day period planet orbits the yellow subgiant star HD 149026 at a distance of 0.042 AU and is notable first as a transiting planet, and second for a small measured radius (relative to mass and incoming heat) that suggests an exceptionally large planetary core.
Following its discovery in 2005 the planet was designated HD 149026 b. In July 2014 the International Astronomical Union launched a process for giving proper names to certain exoplanets and their host stars. The process involved public nomination and voting for the new names. In December 2015, the IAU announced the winning name was Smertrios for this planet. The winning name was submitted by the Club d'Astronomie de Toussaint of France. Smertrios was a Gallic deity of war.
Discovery
The planet was discovered by the N2K Consortium in 2005, which searches stars for closely orbiting giant planets similar to 51 Pegasi b using the highly successful radial velocity method. The spectrum of the star was studied from the Keck and Subaru Telescopes. After the planet was first detected from the Doppler effect it caused in the light of the host star, it was studied for transits at the Fairborn Observatory. A tiny decrease of light (0.003 magnitudes) was detected every time the planet was transiting the star, thus confirming its existence.
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