Yes, there are limits for stars - limits to lower and upper mass, longevity, size, etc. Given the mass of the universe a limit for the number of extant stars would also exist. During stellar collapse at end of a star's life there are some well-studied limits answering to degeneracy pressure, like the Chandresekhar limit, the Oppenheimer-Volkoff limit, etc., which prevent further collapse until a certain mass limit is exceeded (perhaps the last limit being quark degeneracy pressure before further collapse into a black hole).
For further examination of a given limit, the limit in question would need to be identified.
Chandrashekhar limit
There is an upper limit to the mass of neutron stars because if the neutron star is too massive, neutrons would be crushed by the gravity of the neutron star, and the neutron star would collapse into a black hole.
Constellations are just regions in the sky - a general direction, so to speak. In any direction there are millions of stars. So, depending which stars you count, that is, up to what brightness limit you want to include stars, you will get more stars, or less stars.
Stars are powered by nucliar fussion. There is minimum pressure and temperature requirement in order to start the process. So to became Star the object has to have enought mass to increase its internal temperature and pressure.
The Oppenheimer Limit is actually known as the Tolman-Oppenheimer-Volkoff Limit and is related to astrophysics. The limit is similar to the Chandrasekhar limit in the sense of limits. The Chandrasekhar is the accurate limit in which electron degeneracy can no longer resist gravity of massive stars of 1.44 stellar masses or more and force the electrons into the protons to become neutrons. The Oppenheimer Limit basically states within a certain mass(Currently unknown exactly!), the neutron will break down into quarks or other subatomic particles, or collapse into a black hole.
Chandrashekhar limit
Get the rest of the stars there are 15 more.
So you know that you are still within your limits.
There is an upper limit to the mass of neutron stars because if the neutron star is too massive, neutrons would be crushed by the gravity of the neutron star, and the neutron star would collapse into a black hole.
Constellations are just regions in the sky - a general direction, so to speak. In any direction there are millions of stars. So, depending which stars you count, that is, up to what brightness limit you want to include stars, you will get more stars, or less stars.
Stars are measured on a scale of apparent luminosity. The higher the number, the fainter the star. The brightest stars / planets are around -2 on this scale. +5.5 is about the limit in a rural, unpolluted, still sky with good, unaided vision. The Romans used to measure someones eyesight by asking them to draw the star cluster pleiades (M45 if I remember correctly) which contains stars of apparent magnitude from +3 and fainter.
Stars are powered by nucliar fussion. There is minimum pressure and temperature requirement in order to start the process. So to became Star the object has to have enought mass to increase its internal temperature and pressure.
In all probability - not that this scenario would happen - but the resulting combination of masses, would push the combined "stars" over the Chandrasekhar limit and a black hole would form.
When they run out of thermonuclear fuel in their cores. What fuel this would be varies, as more massive stars can fuse heavier elements. The absolute upper limit is iron, as fusing it absorbs energy.
The Oppenheimer Limit is actually known as the Tolman-Oppenheimer-Volkoff Limit and is related to astrophysics. The limit is similar to the Chandrasekhar limit in the sense of limits. The Chandrasekhar is the accurate limit in which electron degeneracy can no longer resist gravity of massive stars of 1.44 stellar masses or more and force the electrons into the protons to become neutrons. The Oppenheimer Limit basically states within a certain mass(Currently unknown exactly!), the neutron will break down into quarks or other subatomic particles, or collapse into a black hole.
Under ideal conditions, the limit is about 6m. That's how the "m" was originally defined - 1m for the brightest stars, 6m for the faintest that could be seen with the naked eye. (However, with the modern definition, the brightest stars have an apparent magnitude of less than 1m - even negative magnitudes.)
CHad guest stars on So Random and Sonnny will go to any limit to avoid acting the sketch with Chad.