GW 123.4-1.5 explained

GW 123.4-1.5
Type:H I region
Epoch:J2000
Ra:[1]

Galactic Worm 123.4-1.5 (GW 123.4-1.5) is an H I region with a mass of approximately 105 MSun.[2] It has an unusual mushroom-shaped structure that may be the result of having been formed by an infalling cloud slamming through the disc of the Milky Way from the other side. The high-velocity cloud in question is theorized as having hit at around 100 km/s, 5 years ago.[3]

Notes and References

  1. GW 123.4-1.5. 2021-01-19.
  2. astro-ph/0003081. 10.1086/312592. The Galactic Worm GW 123.4−1.5: A Mushroom-shaped H I Cloud. The Astrophysical Journal. 533. L25–L28. 2000. English. Jayanne. Taylor. A. R.. Mashchenko. S. Y.. Irwin. Judith A.. Basu. Shantanu. Johnstone. Doug. Basu. Shantanu. Johnstone. Doug. 1 . 10727383 . 2000ApJ...533L..25E . 5878889 .
  3. 0801.3186. 10.1086/589556. How was the Mushroom-shaped GW 123.4–1.5 Formed in the Galactic Disk?. The Astrophysical Journal. 692. 434–444. 2008. Baek. Chang Hyun. Kudoh. Takahiro. Tomisaka. Kohji. 1 . 2008ApJ...682..434B . 17971014 .

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