Such a study wouldn't be possible without a rich library of cataloged supernovae, built with the keen eyes of amateur astronomers. A composite image of the Messier 81 (M81) galaxy shows what astronomers call a 'grand design' spiral galaxy, where each of its arms curls all the way down into its center. Briefly elaborating, S0 galaxies are like a combination between a spiral galaxy and elliptical galaxy because of the bulge and disk that they do have, like spiral galaxies, but they do not have a spiral-like structure. After the reported discovery of SN 2005ab, professional astronomers were able to follow up with spectroscopic studies and confirm it as a type II supernova, which eventually led to Hubble to study its location. Spiral galaxies come in a wide range of sizes, from 5 to 100 kiloparsecs across, have masses between 1 solar masses, and luminosities ranging from 10. This supports the leading theory of how the spiral arms are forced into their iconic shape known as. This system is a big help to professional astronomers, because time is truly of the essence with supernovae events. The magnetic fields align along the entire length of the massive spiral arms 24,000 light years across (0.8 kiloparsecs) implying that the gravitational forces that created the galaxy’s shape are also compressing its magnetic field. Amateur astronomers can spend much more time actively observing the skies, and sometimes have extremely impressive systems of telescopes, computers, and software they can use.īecause amateurs like Itagaki spot so many supernovae, there is actually an online system set up to report them (the Transient Name Server). Most astronomical events happen over time spans that dwarf human lifetimes, but supernova explosions are extraordinarily fast, appearing very suddenly and then brightening and dimming over a period of days or weeks.Īnother aspect is time-data from a few hours of observations with telescopes like Hubble might take weeks, months, or sometimes even years to process and analyze. The detection of supernovae is a mixture of skill, facilities, and luck. This might raise the question of how an amateur astronomer could spot something like a supernova event before professional astronomers who have access to telescopes such as Hubble. Located in the constellation of Ursa Major. An image of the Pinwheel Galaxy, or M101. spiral galaxy stock pictures, royalty-free photos & images. Our Milky Way galaxy is a barred spiral galaxy, which means it has a. the triangulum galaxy (also known as messier 33 or ngc 598) is a spiral galaxy approximately 3 million light-years away in the constellation triangulum. While the study was conducted by professional astronomers, SN 2005ad itself owes its discovery to a distinguished amateur astronomer named Kōichi Itagaki, who has discovered over 170 supernovae. A spiral galaxy is a galaxy that is shaped like a spiral, with a bulge in the center. The location of this faded supernova was observed as part of a study of multiple hydrogen-rich supernovae, also known as type II supernovae, to better understand the environments in which certain types of supernovae take place.
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