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.
A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, forms part of the Hubble sequence. Spiral galaxies consist of a flat, rotating disc containing stars, gas and dust, and a central concentration of stars known as the bulge. These are surrounded by a much fainter halo of stars, many of which reside in globular clusters.
Spiral galaxies are named for the spiral structures that extend from the center into the galactic disc. The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young, hot OB stars that inhabit them.
Roughly two-thirds of all spirals are observed to have an additional component in the form of a bar-like structure, extending from the central bulge, at the ends of which the spiral arms begin. The proportion of barred spirals relative to their barless cousins has changed over the history of the Universe, with only about 10% containing bars about 8 billion years ago, to roughly a quarter 2.5 billion years ago, until present, where over two-thirds of the galaxies in the visible universe (Hubble volume) have bars.
Warrior on the Edge of Time is Hawkwind's fifth studio album. It reached number 13 on the U.K. album charts and was their third and last album to make the U.S. Billboard chart, where it peaked at number 150. Many of the lyrics are by Michael Moorcock and the album is loosely based on the concept of Moorcock's 'Eternal Champion'. Reviews have been mixed, with Melody Maker panning the album and particularly criticizing the vocal work while the All Music Guide has praised the album for features such as the songwriting.
Background
Throughout 1974, Hawkwind heavily toured the UK, Europe and North America with their set being composed predominantly from that year's Hall of the Mountain Grill album. Unusually for them, no new material had been introduced with the exception of some Michael Moorcock poems based on his Elric fictional character, which appeared on the 1974 live album The 1999 Party. In December through to February, the group embarked upon a series of UK dates known as "A Dead Singer" tour after the Moorcock story published in the accompanying tour programme, with support from Dr Feelgood (Wilko Johnson: "Us and Hawkwind were a great bill. We had just been signed by United Artists, Hawkwind's label. UA wanted to give us a little experience in the larger venues. That was where I first met and made friends with Lemmy, who turned out to be a good pal."). As the band owed one final single to United Artists to conclude their recording contract, during a mid-tour break they entered Olympic Studios on 5 and 6 January where they recorded Brock's "Kings of Speed" which featured lyrics written by Moorcock originally intended for inclusion on his New Worlds Fair album, Lemmy's "Motorhead" and House's "Spiral Galaxy". The first two were selected for the A and B side respectively, and the single was released on 7 March.
The most striking feature may be the dense core region, which contains an active galactic nucleus.Spiral galaxy NGC 5033 ;This image from the Hubble Space Telescope depicts the unbarred spiral galaxy ...
... spiral galaxy known as NGC 891 ... Discovered in 1784, NGC 891 (also known as Caldwell 23 or the SilverSliverGalaxy) is an edge-on, unbarred spiral galaxy located some 30 million light years away.
... this intermediate spiral galaxy, NGC 4654, in the constellation Virgo. The galaxy has a bright center and is labeled "intermediate" because it has characteristics of both unbarred and barred spirals.
The Sombrero Galaxy, also known as Messier 104 or NGC 4594 is an unbarred spiral galaxy 31 million light years in between the Virgo and Corvus constellations and is one of the most massive celestial ...
Sombrero Galaxy (also known as Messier 104 or NGC 4594) is an unbarred spiral galaxy located between the borders of the Virgo and Corvus constellations, some 31 million light years away.
NGC 1961 is an intermediate spiral and an AGN, or active galactic nuclei, type of galaxy. Intermediate spirals are in between “barred” and “unbarred” spiral galaxies, meaning they don’t have a well-defined bar of stars at their centers.
The galaxy NGC 1961 unfurls its gorgeous spiral ... “Intermediate spirals are in between “barred” and “unbarred” spiral galaxies, meaning they don’t have a well-defined bar of stars at their centers.
It has been described as an active galactic nucleus as also an intermediate spiral galaxy. Various discoveries have found that these intermediate spirals can be found between “barred” and “unbarred” spiral galaxies.
... and an intermediate spiral galaxy ... Intermediate spiral galaxies fall between "barred" and "unbarred" spiral galaxies because they lack a distinct bar of stars at their centres.
NGC 1961 is an intermediate spiral and an AGN, or active galactic nuclei, type of galaxy. Intermediate spirals are in between "barred" and "unbarred" spiral galaxies, meaning they don't have a well-defined bar of stars at their centers.
Intermediate spiral galaxies are so-named because they are between “barred” and “unbarred” spiral galaxies, which means they don’t have a well-defined bar of stars at their centers.
It is an intermediate spiral galaxy with an active galactic nucleus (AGN) and is designated NGC 1961. When compared to "barred" spiral galaxies and "unbarred" spiral galaxies, intermediate spirals fall somewhere in the middle.
