NGC 4030
Lua error in Module:Infobox at line 235: malformed pattern (missing ']'). NGC 4030 is a grand design spiral galaxy[5] located about 64[3] million light years away in the constellation Virgo. With an apparent visual magnitude of 10.6, it is visible with a small telescope as a 3 arc minute wide feature about 4.75° to the southeast of the star Beta Virginis.[4] It is inclined by an angle of 47.1°[3] to the line of sight from the Earth and is receding at a velocity of 1,465 km/s.[3]
The morphological classification of NGC 4030 in the De Vaucouleurs system is SA(s)bc,[3] which indicates a spiral structure (SA) with no bar (s) and moderate to loosely wound arms (bc).[6] The inner part of the galaxy shows a complex structure with multiple spiral arms, which becomes a symmetric, double arm pattern beyond 49″ from the core.[5] The central bulge is relatively young with an estimated age of two billion years,[7] while the nucleus is inactive.[8]
In 2007, a supernova explosion was discovered in the galaxy from images taken on February 19 from the 1 m Swope telescope at Las Campanas Observatory in Chile. Designated SN 2007aa, it was a type IIP[9] supernova positioned 68″.5 north and 60″.8 east of the galactic nucleus.[10] The progenitor was a red giant star with 8.5–16.5 times the mass of the Sun.[9]
References
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