Newly ‘Species’ of Enormous Spiral Galaxies --"Dwarf the Milky -Way, Shockingly Gone Unnoticed" - Physics-Astronomy.org

Newly ‘Species’ of Enormous Spiral Galaxies --"Dwarf the Milky -Way, Shockingly Gone Unnoticed"

We have establish a previously unrecognized class of curved galaxies that are as luminous and massive as the largest, brightest galaxies we recognize of," said Patrick Ogle, an astrophysicist at the Infrared dispensation and Analysis Center (IPAC) at the California Institute of skill in Pasadena and lead author of a paper on the answer published this March in The Astrophysical Journal. "It's as if we have presently discovered a new land animal stomp around that is the size of an elephant but had shamefully gone unnoticed by zoologists."
"Super spirals could basically change our understanding of the formation and development of the most huge galaxies," said Ogle. "We have much to learn from these recently identified, galactic leviathans."
A strange latest kind of galactic beast has been dotted in the cosmic wilderness. Dubbed "super spirals," these unparalleled galaxies dwarf our own spiral galaxy, the Milky Way, and fight in size and brightness with the biggest galaxies in the universe.
Super spirals have extended hidden in plain sight by mimicking the look of typical spiral galaxies. A latest study using archived NASA data reveals these apparently nearby objects are in information distant, behemoth versions of daily spirals. Rare, super spiral galaxies present researchers with the main mystery of how such giants could have arisen.
Ogle and colleagues chance upon super spirals as they searched for extremely luminous, massive galaxies in the NASA/IPAC Extragalactic Database (NED), an online storehouse contain information on over 100 million galaxies. NED brings together a wealth of data from many dissimilar projects, including ultraviolet light comments from the Galaxy Evolution Explorer, visible light from Sloan Digital Sky Survey, infrared light from the Two Micron All-Sky review, and links to data from other mission such as Spitzer and the Wide-field Infrared Survey traveler, or WISE.
"Remarkably, the ruling of super spiral galaxies came out of only analyzing the inside of the NASA/IPAC Extragalactic Database, thus reaping the benefits of the careful, systematic merging of data from many sources on the similar galaxies," said George Helou, a study co-author and the decision-making director of IPAC. "NED is surely holding a lot of more such nuggets of in order, and it is up to us scientists to ask the right questions to transport them out.According to recognized astrophysical theory, spiral galaxies should not be able to reach any of these feats since their size and star-making potential are limited. As spiral galaxies produce by gravitationally attract fresh, cool gas from intergalactic space, their masses arrive at a tipping point in which any newly captured gas rushes in too fast. This headfirst gas heats up and prevents following star formation in a process known as "quench." Bucking this conventional wisdom,
though, super spirals stay unquenched.
Newly ‘Species’ of Enormous Spiral Galaxies --"Dwarf the Milky -Way, Shockingly Gone Unnoticed"
A vital hint about the possible origin of super spirals is that four out of the 53 seen by Ogle and colleagues obviously contain two galactic nuclei, instead of just one as customary. Double nuclei, which look like 2 egg yolks frying in a pan, are a telltale sign of two galaxies having presently merged together. Conventionally, merger of spiral galaxies are destined to turn out to be bloated, elliptical galaxies. Yet Ogle and colleagues speculate that a particular merger involving two, gas-rich twisting galaxies could see their joint gases settle down into a latest, larger stellar disk -- presto, a super spiral."

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