Answers From Experts & Organizations (1) SUCCESS! A. By definition, a hematoma is a collection of blood outside of a blood vessel. It occurs because the wall of a blood vessel wall, artery, vein or capillary, has been damaged and blood has leaked into tissues where it does not belong.
Deneb's absolute magnitude is currently estimated as â8.4, placing it among the most luminous stars known, with an estimated luminosity nearly 200,000 times that of the Sun. This is towards the upper end of various published values over the last few decades.
Astronomers gauge the ârednessâ of a star by measuring its magnitude contrast through a blue and visible (green peaking) filters. This is what is known as its B-V index, and the higher the value, the redder the star. La Superba has a B-V value of +2.5.For contrast, the familiar orange-red stars Antares and Betelgeuse have a B-V value of +1.83 & +1.85, respectively.âve shown off carbon stars such as La Superba and Hindâs Crimson Star at public star parties to great effect. They can be an excellent star party â secret weapon â when every other âscope down the line is aimed at the Orion nebula. For a faint constellation, Canes Venatici has lots to offer.