S-type star are two distinct classes of S-type stars: intrinsic S stars; and extrinsic S stars. The presence of Technetium is used to distinguish the two classes, only being found in the intrinsic S-type stars. Intrinsic S-type stars are thermal pulsing asymptotic giant branch (TP-AGB) stars. AGB stars have inert carbon-oxygen cores and undergo fusion both in an inner helium shell and an outer hydrogen shell. They are large cool M class giants. The thermal pulses, created by flashes from the helium shell, cause strong convection within the upper layers of the star. These pulses become stronger as the star evolves and
Red Giant Movies of its distribution projects, "Vinnaithaandi Varuvaayaa", "Madrasapattinam", "Boss Engira Bhaskaran" and "Mynaa" became commercial successes. In the case of "Mynaa", the studio received praise for backing and choosing to purchase a small budget film and helping market it as a bigger film. From the end of 2011, Red Giant Movies has concentrated solely on producing films starring Udhayanidhi Stalin in the lead role. In addition to the films produced by Red Giant Movies since 2008, the following films from other banners were distributed by the company: Red Giant Movies Red Giant Movies is an Indian film production and distribution company