[영문]Deep sky project Messier objects

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영문으로 작성된 에세이 입니다
별에 Messier objects중 15개를 선정하여 Messier number, Common name , Object type & Constellation, Apparent magnitude , Distance in thousands of years, Description +사진을 정리했습니다. 천문학 수업들으시는분들 참고하세욤

목차

INTRODUCTION:
15 MESSIER OBJECTS:Crab Nebula, Lagoon Nebula, Wild Duck Cluster, Pegasus Cluster, Omega Nebula, Trifid Nebula, Dumbbell Nebula, Andromeda Galaxy, Triangulum Galaxy, Orion Nebula, Whirlpool Galaxy, Ring Nebula, Sunflower Galaxy, Black Eye Galaxy, Bode`s Galaxy

본문내용

INTRODUCTION:
In 1758, a comet hunter and skilled observer by the name of Charles Messier began to compile a list of nebulous looking objects. His chosen specialty was a comet hunter, and the list was designed to serve as a guide to compare knows objects to potential comets. When far from the Sun, comets can also look like fuzzy objects, but will move slightly during the course of a few days. Messier`s goal was not to study these fuzzy objects on Messier`s list, but Astronomers today still refer to the Messier Objects as some of the more prominent deep space objects. There are 110 of these objects, and they have since been absorbed into a newer catalog - called the New General Catalog (or NGC), however observational purists still refer to the "M" in Messier when viewing these objects through a telescope. The Messier Object catalog is not specific to one type of object but has a variety of galaxies, star clusters and nebulae.
Fortunately for us, the Messier Catalog became well known for a much higher purpose, as a collection of the most beautiful objects in the sky including nebulae, star clusters, and galaxies. It was one of the first major milestones in the history of the discovery of Deep Sky objects, as it was the first more comprehensive and more reliable list: Only four or five objects were initially missing because of data reduction errors, which could be figured out later though.

참고 자료

Bibliography

Arias, J. I.; Barbá, R. H.; Maíz Apellániz, J.; Morrell, N. I.; Rubio, M. (2006). "The
infrared Hourglass cluster in M8". Monthly Notices of the Royal Astronomical Society 366 (3): 739–757.

V. Filippenko, T. Matheson, A. J. Barth (1994). "The peculiar type II supernova
1993J in M81: Transition to the nebular phase". Astronomical Journal 108: 2220-2225.

Lundmark K. (1921), Suspected New Stars Recorded in Old Chronicles and Among
Recent Meridian Observations``, Publications of the Astronomical Society of the Pacific, v. 33, p.225

Mayall N.U. (1939), The Crab Nebula, a Probable Supernova, Astronomical Society of
the Pacific Leaflets, v. 3, p.145

Murdin, P. (2000). "Ring Nebula (M57, NGC 6720)". Encyclopedia of Astronomy and
Astrophysics, Edited by Paul Murdin, article 5323. Bristol: Institute of Physics Publishing, 2001. http://eaa.iop.org/abstract/0333750888/5323.