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The LIC technique was first proposed by Brian Cabral and Leith Casey Leedom in 1993. [2] In LIC, discrete numerical line integration is performed along the field lines (curves) of the vector field on a uniform grid. The integral operation is a convolution of a filter kernel and an input texture, often white noise. [1]
NGC 602 contains three main condensations of stars. The central core is NGC 602a, with the compact NGC 602b 100 arc-seconds to the NNW. NGC 602c is a looser grouping 11 arc-minutes to the NE, which includes the WO star AB8. [9] NGC 602 includes many young O and B stars and young stellar objects, with few evolved stars. [10]
NGC 602c (centre) is a portion of the larger NGC 602 cluster. Below (south) is the N90 H ii region around NGC 602a, with the N89 H ii region on the right. AB8 was first discovered by Lindsay in 1961, when it was catalogued as entry 547 in a list of emission line objects in the SMC. [5]
SN 1998bw was a rare broad-lined Type Ic [1] gamma ray burst supernova detected on 26 April 1998 in the ESO 184-G82 spiral galaxy, which some astronomers believe may be an example of a collapsar (). [2]
The IBM 602 Calculating Punch, introduced in 1946, was an electromechanical calculator capable of addition, subtraction, multiplication, and division. The 602 was IBM's first machine that did division.
WASP-17b is thought to have a retrograde orbit (with a sky-projected inclination of the orbit normal against the stellar spin axis of about 149°, [11] not to be confused with the line-of-sight inclination of the orbit, given in the table, which is near 90° for all transiting planets), which would make it the first planet discovered to have such an orbital motion.
HAT-P-14b, officially named Sissi also known as WASP-27b, [4] is an extrasolar planet located approximately 224.2 ± 0.6 parsecs (731.2 ± 2.0 ly) [5] away in the constellation of Hercules, orbiting the 10th magnitude F-type main-sequence star HAT-P-14.
WASP-62, formally named Naledi, is a single star about 573 light-years (176 parsecs) away.It is an F class main-sequence star, orbited by a planet, WASP-62b.The age of WASP-62 is much younger than the Sun at 0.8 ± 0.6 billion years, [4] and it has a metal abundance similar to the Sun.