Actual main sequence is Y T L M K G F A B O W. Not any S-type, that's for M-type giants with moderate C/CN/CH and prominent TiO, ZrO lines. No R or N, these types are merged into C-type of AGB stars. Carbon stars.
W-, L-, T- and Y-types are not considered main-sequence. Wolf-Rayet stars mainly fuse helium instead of hydrogen and are thus not main-sequence. L-, T- and Y-types are also not main-sequence because they are not even stars and are instead brown dwarves.
N and R are actually still existing, just different-ish (N -> C-N, R -> C-R). They were originally just N (Secchi) and R (Harvard) with similar properties, namely, a deep red color, cool surface temperature, similar carbon bands, etc. When MK system came, N and R were dropped out because it was incomplete. Instead, they were both replaced with C, used for spectral classes of stars similar to Y Canum Venaticorum. When MK system was revised, N and R were brought back, but as sub-classes of C. Today, they exist as C-N and C-R with C-H, C-J, and C-Hd. S type is a cool giant with an approximately equal amount of carbon and oxygen in its atmosphere. Basically, S type is just late AGB. It also has bands of Zirconium Oxide (ZrO) and Titanium Oxide (TiO). They have w classes: •Intrinsic S, which owe their spectra to convectionof fusion products and s-products towards their surfaces •Extrinsic S, which come from mass transfer in a binary system
Errors: No green, purple, or pink stars (Purple/Pink stars are only visible when they are coming towards the observer) Westerlund BKS AS is about 800 Gm Rho Cassiopeiae* Sun is G2V (everyone pointed this out) Where did you get the SS and Q type star sizes from? J stars are not tiny, they are a class of red giants. No V, N,Z, and I type stars (Z type star is on all dimensions wiki but that's not a scientific source and Z type star on there is way different) EBLM J0555-57Ab is 60 Mm Vega is A0V Rigel is B8V Sirius is A0V
Ss (strange) type star A strange star is a hypothetical astronomical object, a quark star made of strange quark matter. Strange stars might exist without regard to the Bodmer-Witten assumption of stability at near-zero temperatures and pressures, as strange quark matter might form and remain stable at the core of neutron stars, in the same way as ordinary quark matter could. Such strange stars will naturally have a crust layer of neutron star material. The depth of the crust layer will depend on the physical conditions and circumstances of the entire star and on the properties of strange quark matter in general. Stars partially made up of quark matter (including strange quark matter) are also referred to as hybrid stars. The collapse of the crust layer of strange stars is one of the proposed causes of fast radio bursts Q type star (ntbc with Quark stars) A Q-star, also known as a grey hole, is a hypothetical type of a compact, heavy neutron star with an exotic state of matter. Such a star can be smaller than the progenitor star's Schwarzschild radius and have a gravitational pull so strong that some light, but not all light, cannot escape. The Q stands for a conserved particle number. A Q-star may be mistaken for a stellar black hole. Types of Q-stars SUSY Q-ball B-ball, stable Q-balls with a large baryon number B. They may exist in neutron stars that have absorbed Q-ball(s) J type stars: Sadly couldn't find anything about the original star but if I wanted to look up the J type ship then I would've been in luck Gs type stars: I found absolutely zero information on this type of star I think it is a giant version of the strange type star.
@@pqhuybl Just to clarify: What I meant by "G2V" is a main-sequence star of spectral type G2. Spectral type G contains yellow stars of any size, with surface temperatures ranging from 5,200 to 6,000 K.
NBH-Type star Mass: 10(NB1H) 10.5(NB2H) Stages: Main sequence(1 - 8 my) LBV(9 - 14 my) Neutron star(15 my - protons decay) Planets : Yes Formed by a colision with a O-Type star and a B-Type star
First of All Your right sol/sun is F9V but some sciencetist think sol/sun is also G2V. But sol/sun is mostly F9V cuz its a bit white when i see it in the afternoon and morning.
Everything here is wrong. Type stars mistakes: Main sequence is O, B, A, F, G, K, M Brown dwarf is L, T, Y Wolf rayet star is W No SS, Q, J, TT, V, Z, E, I, N, GS, U, H, P Spectral type mistakes: Y9-0V, T9-0V, L9-0V, M9-0V, K9-0V, G9-0V, F9-0V, A9-0V, B9-0V, O9-2V no O1V and O0V Stat type mistakes: EBLM is M type Proxima centauri is M5.5Ve Sun is G2V Rigil is G2V Sirius is A0mA1 Va Spica is B2V All size are wrong
@@SomewhatHyping I Meant I Made A Concept About A J-Type Star In Universe Sandbox And I Was Confused When I Saw A J-Type Star, I Guess Mine Could Be A Another Type Of A J-Type Star?
Well Jupiter is 1.4 Gm and proxima is 1.40 R J.1.4* 1.4 is 1.96. Because the sizes are inaccurate you have to ➗ by 1.4 1.96 ➗ by 1.4 = 1.4 M8V is 1.4 Gm
@@Paulolocatelligandin well the sun’s temperature is too low to be F9V. To be a F type, a star has to be at least 6,000 K. The sun’s temp is around 5,770 K.
