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The term "grand design" was not used in this work, but appeared in the 1966 continuation paper; [4] Lin [5] (along with Yuan and Shu [6]) is usually credited with coining of the term. According to the density wave theory, the spiral arms are created inside density waves that turn around the galaxy at different speeds from the stars in the ...
The ratio of the luminosity of the spiral structure to the luminosity of the entire galaxy is greatest for grand design spiral galaxies. For these galaxies, this ratio is 21% on average, with some reaching as high as 40–50%. For flocculent and multi-arm galaxies, the ratio is 13% and 14%, respectively.
This type of galaxy is known as "grand design". [1] NGC 7541 is actually observed to have a higher-than-usual star formation rate, adding weight to the theory that spiral bars act as stellar nurseries, corralling and funneling inwards the material and fuel needed to create and nurture new baby stars. [3]
The galaxy features a prominent bar and two spiral arms emerge from the end of the bar at a right angle. It is considered to be a grand design galaxy , as the two arms are well defined. The arms are bright for about half a revolution and can be traced for nearly a full revolution before fading.
NGC 5364 is a grand design spiral galaxy located 54.5 [3] million light years away in the constellation Virgo.It is inclined to the line of sight from the Earth at an angle of 47° along a position angle of 25°. [7]
BRI 1335-0417 is the oldest and most distant known spiral galaxy, as of 2024. [dubious – discuss] The galaxy has a redshift of 4.4, meaning its light took 12.4 billion years to reach Earth. [15] [16] The oldest grand design spiral galaxy on file is BX442. At eleven billion years old, it is more than two billion years older than any previous ...
NGC 5135 has well defined spiral arms and is considered a grand design spiral galaxy. There is star formation along the leading edges of the arms. [3] There are dust lanes along the bar that curve towards the centre of galaxy. [4] Spiral arms become less well structured in the central regions. [3]
NGC 4088 is a grand design spiral galaxy. [5] This means that the spiral arms in the galaxy's disk are sharply defined. In visible light, one of the spiral arms appears to have a disconnected segment. Halton Arp included this galaxy in the Atlas of Peculiar Galaxies as one of several examples where this phenomenon occurs. [6]