Celestial hemisphere:  Northern  ·  Constellation: Aries (Ari)  ·  Contains:  B202  ·  B203  ·  B204  ·  B206  ·  HD21483  ·  LBN 740  ·  LBN 746  ·  LDN 1448  ·  LDN 1451  ·  LDN 1452  ·  LDN 1455  ·  VdB13  ·  VdB16
ARIES NEBULAR CLOUD, Stefano Attalienti
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ARIES NEBULAR CLOUD

ARIES NEBULAR CLOUD, Stefano Attalienti
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ARIES NEBULAR CLOUD

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Description

The Perseus Cloud is a complex of gas and dark dust which extends to the high galactic latitudes for over 20° apparent extension; belongs to the arm of Orion and is located just 980 light years from the solar system, in the direction of the constellations of Perseus and Aries. Thanks to its proximity, it is one of the easiest nebulous regions to study, in particular as regards the understanding of the formation mechanisms of low and medium mass stars, being in fact a minor cloud of the spiral arm in which it is found, at its phenomena of formation of large mass stars do not take place inside, as instead occurs in more conspicuous regions, such as in the Orion or Cepheus molecular nebulous complex. Associated with the Perseus cloud is the Perseus OB2 association, which with its distance of about 300 parsecs is one of the closest OB associations to the solar system; it represents the first generation of stars to originate in the cloud region. In this image the southwestern part of the cloud is visible in the constellation of Aries. The western part of the Cloud, especially its southwest end, borders on the constellation Aries. Here is the dark nebula LDN 1455, one of the densest gas agglomerations in the region, to which the less dense cloud LDN 1451 is connected, to the northwest. At the southern edge of LDN 1455 is the reflection nebula vdB 16. The northwestern edge of the Perseus Cloud consists of LDN 1448 bounded to the north by the small reflection nebula vdB 13 and has a total mass of about 100 solar masses, divided equally over two very dense nuclei. As in the previous cloud, here too the presence of phenomena of formation of new stars is evidenced by some young stellar objects, which enhance and push molecular flows and some HH objects, three infrared sources are also known.

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