The Whirlpool Galaxy and its companion satellite. The Whirlpool is an unbarred spiral galaxy.
Barless spiral galaxies are one of three general types of spiral galaxies under the de Vaucouleurs system classification system, the other two being intermediate spiral galaxy and barred spiral galaxy. Under the Hubble tuning fork, it is one of two general types of spiral galaxy, the other being barred spirals.
Gradesedit
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Under the de Vaucouleurs classification system, SA-galaxies are one of three types of spiral galaxy
^Astronomical Journal, "Near-infrared surface photometry and morphology in virgo cluster spiral galaxy nuclear regions", Bernard J. Rauscher, April 1995, Bibcode:1995AJ....109.1608R, doi:10.1086/117389
^Astronomy Pictures, "M99" (accessed 18 April 2010)
This spiral galaxy article is a stub. You can help Wikipedia by expanding it.
unbarred, spiral, galaxy, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, 2. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Unbarred spiral galaxy news newspapers books scholar JSTOR May 2009 Learn how and when to remove this message An unbarred spiral galaxy 1 2 is a type of spiral galaxy without a central bar or one that is not a barred spiral galaxy It is designated with an SA in the galaxy morphological classification scheme The Whirlpool Galaxy and its companion satellite The Whirlpool is an unbarred spiral galaxy Barless spiral galaxies are one of three general types of spiral galaxies under the de Vaucouleurs system classification system the other two being intermediate spiral galaxy and barred spiral galaxy Under the Hubble tuning fork it is one of two general types of spiral galaxy the other being barred spirals Grades editThis section needs expansion You can help by adding to it April 2010 nbsp Under the de Vaucouleurs classification system SA galaxies are one of three types of spiral galaxy Example Type Image Information Notes SA0 SA0 is a type of lenticular galaxy SA0 SA0 is a type of lenticular galaxy SA0 SA0 is a type of lenticular galaxy NGC 3593 SA0 a nbsp SA0 a can also be considered a type of unbarred lenticular galaxy NGC 3593 is an SA s 0 a NGC 3169 SAa nbsp NGC 3169 is an SA s a pec Messier 81 SAab nbsp M81 is an SA s ab Messier 88 SAb nbsp M88 is an SA rs b NGC 3949 SAbc nbsp NGC 3949 is an SA s bc NGC 4414 SAc nbsp NGC 4414 is an SA rs c Triangulum Galaxy SAcd nbsp Triangulum is an SA s cd NGC 300 SAd nbsp NGC 300 is an SA s d NGC 45 SAdm nbsp SAdm can also be considered a type of unbarred Magellanic spiral NGC 45 is an SA s dm NGC 4395 SAm nbsp SAm is a type of Magellanic spiral Sm NGC 4395 is an SA s m nbsp An example of this type imaged by the Hubble Space TelescopeUnbarred lenticular galaxy editAn unbarred lenticular galaxy is a lenticular version of an unbarred spiral galaxy They have the Hubble type of SA0 An example of this is the galaxy AM 0644 741 For other examples see Category Unbarred lenticular galaxies References edit Astronomical Journal Near infrared surface photometry and morphology in virgo cluster spiral galaxy nuclear regions Bernard J Rauscher April 1995 Bibcode 1995AJ 109 1608R doi 10 1086 117389 Astronomy Pictures M99 accessed 18 April 2010 nbsp This spiral galaxy article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Unbarred spiral galaxy amp oldid 1221194135, wikipedia, wiki, book, books, library,
