Celestial hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  1 Ceres  ·  12.46  ·  410 Chloris  ·  7.51  ·  HD109439  ·  HD109520  ·  HD109628  ·  HD109793  ·  HD109814  ·  HD110249  ·  HD110585  ·  HD110815  ·  HD111068  ·  IC 3483  ·  IC 3489  ·  IC 3492  ·  IC 3501  ·  IC 3509  ·  IC 3540  ·  IC 3583  ·  IC 3586  ·  IC 3611  ·  IC 3631  ·  IC 3635  ·  IC 3653  ·  IC 3665  ·  IC 3672  ·  IC 3694  ·  IC 3698  ·  IC 3710  ·  And 388 more.
Getting plate-solving status, please wait...
The Anti-Markarian Chain: from M60 to M90, Mau_Bard
The Anti-Markarian Chain: from M60 to M90, Mau_Bard

The Anti-Markarian Chain: from M60 to M90

Getting plate-solving status, please wait...
The Anti-Markarian Chain: from M60 to M90, Mau_Bard
The Anti-Markarian Chain: from M60 to M90, Mau_Bard

The Anti-Markarian Chain: from M60 to M90

Equipment

Loading...

Acquisition details

Loading...

Description

In the Virgo Cluster, close to the famous Markarian Chain, is visible the second arch of galaxies drawn in the picture below, that includes M60, M59, M58, M89, M90.
In the picture is also included the celebrity duo Siamese Twin Galaxies NGC4567 + NGC4568, and countless background galaxies.

On the first night of recording by chance, the Dwarf planet Ceres and the asteroid Chloris entered the field of view and an animation of moving Ceres is visible here.

image.png
Markarian and "Anti-Markarian" Chains. In the rectangle the area photographed here. My elaboration of "Cartes du Ciel" screen - 2023 

I add a few notes, mostly excerpted by Wikipedia, regarding the formidable Virgo Cluster.

Virgo Cluster

The Virgo Cluster is a large cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo. Comprising approximately 1,300 (and possibly up to 2,000) member galaxies, the cluster forms the heart of the larger Virgo Supercluster, of which the Local Group (containing our Milky Way galaxy) is a member.

The cluster subtends a maximum arc of approximately 8 degrees centered in the constellation Virgo.
Its brightest member is the elliptical galaxy Messier 49; however its most famous member is the elliptical galaxy Messier 87, which is located in the center of the cluster.

The cluster is an aggregate of separate subclumps:
- Virgo A, centered on M87
- a second one centered on the galaxy M86
- Virgo B, centered on M49
- Virgo C centered on the galaxy M60
- the LVC (Low Velocity Cloud) subclump, centered on the large spiral galaxy NGC 4216, west of M87

Notably, the giant elliptical galaxy M87 contains a supermassive black hole, whose event horizon was observed by the Event Horizon Telescope Collaboration in 2019.

Virgocentric Flow

The Virgocentric flow (VCF) is the preferred movement of Local Group galaxies towards the Virgo cluster caused by its overwhelming gravity, which separates bound objects from the Hubble flow of cosmic expansion. The VCF can refer to the Local Group's movement towards the Virgo Cluster, since its center is considered synonymous with the Virgo cluster, but more tedious to ascertain due to its much larger volume. The excess velocity of Local Group galaxies towards, and with respect to, the Virgo Cluster are 100 to 400 km/s. This excess velocity is referred to as each galaxy's peculiar velocity.

Intracluster Medium

As with many other rich galaxy clusters, Virgo's intracluster medium is filled with a hot, rarefied plasma at temperatures of 30 million kelvins that emits X-Rays. Within the intracluster medium (ICM) are found a large number of intergalactic stars (up to 10% of the stars in the cluster), including some planetary nebulae. It is theorized that these were expelled from their home galaxies by interactions with other galaxies. The ICM also contains some globular clusters, possibly stripped off dwarf galaxies, and even at least one star formation region.

image.png
A big picture of the Virgo Cluster; highlighted is the area photographed here. My elaboration of a "Cartes du Ciel" screen.

Comments