Messier 90, a large spiral galaxy in Virgo

Low levels of  gas prevents using the  to estimate the distance to Messier 90.

Markarian's Chain Galaxies showing Messier 84, Messier 86, Messier 87, Messier 88, and Messier 90 Poster Print (28 x 28)

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  • TAG : Messier 90 is a galaxy in Virgo, member of galaxy pair Arp 76
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  • Messier 90 has tightly wounded, smooth bright truncated spiral arms with a low density, which appear to be devoid of star formation. In fact, there are few bright pink star-forming (H II) regions in this galaxy with the only exception of the inner disk region, near the darker dust lanes, what appears to be a site of significant star formation activity. This galaxy is, however, rich in globular clusters, with around 1,000 of them.

    Because the star formation in Messier 90 appears truncated, this galaxy has been classified as the prototype of an anemic galaxy, an intermediate form between the gas-rich, star-forming spiral galaxies and the gas-poor, inactive lenticular galaxies. Sometimes it is even considered to be a passive spiral galaxy, a spiral galaxy located in rich galaxy clusters at high redshifts that present spiral structure, but little or no star formation. It is thought that Messier 90 may be on the way to evolve into a lenticular (S0) galaxy.

  • Because the star formation in Messier 90 appears truncated, this galaxy has been classified as the prototype of an anemic galaxy, an intermediate form between the gas-rich, star-forming spiral galaxies and the gas-poor, inactive lenticular galaxies. Sometimes it is even considered to be a passive spiral galaxy, a spiral galaxy located in rich galaxy clusters at high redshifts that present spiral structure, but little or no star formation. It is thought that Messier 90 may be on the way to evolve into a lenticular (S0) galaxy.

    Most probably, Messier 90 is interacting with a satellite with which it comprises Arp 76: an irregular galaxy of about 40 thousand light-years across, called IC 3583 (not visible in this image), which is receding from us at some 1120 kilometers per second. Since their recessional velocities differ by some 1355 km/sec, they would not remain companions for long if they are actually companions now.

    Messier 90
    Pozorovací údaje
    (Ekvinokcium J2000,0)
    Typ spirální galaxie
    Rektascenze 12h 36m 50s
    Deklinace +13°09'46"
    Zdánlivá magnituda (V) +9,4
    Souhvězdí Panna (lat. Vir)
    Vzdálenost 59 000 000 ly
    Označení v katalozích
    M90, NGC 4569,
    (V) – měření provedena ve viditelném světle

  • Messier 90

    Object Name: Messier 90
    Alternative Designations: M90, NGC 4569
    Object Type: Type Sb Barred Spiral Galaxy
    Constellation: Virgo
    Right Ascension: 12 : 36.8 (h:m)
    Declination: +13 : 10 (deg:m)
    Distance: 60000 (kly)
    Visual Brightness: 9.5 (mag)
    Apparent Dimension: 9.5×4.5 (arc min)

Astronomy Photo of the Day: 1/27/15 — Messier 90

It is one of the largest and brightest spiral galaxies in the Virgo Cluster, a cluster of some 1300 (and possibly up to 2000) galaxies. The Virgo Cluster is receding from us at a speed of 1100 km/sec, so Messier 90 is racing toward us through the cluster at more than 1300 km/sec, what means it has enough velocity to escape from the gravitational bonds of the Virgo Cluster.