NGC 4424: Nasa Telescopes capture Stellar Delivery System Service for Black Hole

The most recent Chandra image release, “NGC 4424: NASA Telescopes Capture Stellar Delivery System Service for Black Hole” was issued on 8/18/22 and featured on several NASA websites (Chandra, Hubble, Marshall Space Flight Center image gallery, NASA Solar System & Beyond, NASA Black Holes, & NASA Galaxies).

NGC 4424 is a spiral galaxy in the Virgo galaxy cluster that is absorbing the collision of a smaller one. Data from NASA’s Chandra X-ray Observatory provides evidence for a supermassive black hole in the smaller galaxy. The smaller galaxy has likely acted as a black hole “delivery service” for NGC 4424. A cluster of stars remaining after the smaller galaxy has had most of its stars stripped away has been nicknamed “Nikhuli,” a name relating to the Tulini festival for the harvest.

For more information visit: https://www.nasa.gov/mission_pages/chandra/images/nasa-telescopes-capture-stellar-delivery-service-for-black-hole.html

Additional NASA links:

https://www.nasa.gov/mission_pages/hubble/main/index.html

https://www.nasa.gov/centers/marshall/images.html

https://www.nasa.gov/topics/solarsystem/index.html

https://www.nasa.gov/black-holes

https://www.nasa.gov/subject/6894/galaxies/

Some astronomical objects have endearing or quirky nicknames, inspired by mythology or their own appearance. Take, for example, the constellation of Orion (The Hunter), the Sombrero Galaxy, the Horsehead Nebula, or even the Milky Way. However, the vast majority of cosmic objects appear in astronomical catalogues, and are given rather less poetic names based on the order of their discovery. Two galaxies are clearly visible in this Hubble image, the larger of which is NGC 4424. This galaxy is catalogued in the New General Catalogue of Nebulae and lusters of Stars (NGC), which was compiled in 1888. The NGC is one of the largest astronomical catalogues, which is why so many Hubble Pictures of the Week feature NGC objects. In total there are 7840 entries in the catalogue and they are also generally the larger, brighter, and more eye-catching objects in the night sky, and hence the ones more easily spotted by early stargazers. The smaller, flatter, bright galaxy sitting just below NGC 4424 is named LEDA 213994. The Lyon-Meudon Extragalactic Database (LEDA) is far more modern than the NGC. Created in 1983 at the Lyon Observatory it contains millions of objects. However, many NGC objects still go by their initial names simply because they were christened within the NGC first. No astronomer can resist a good acronym, and “LEDA” is more appealing than “the LMED”, perhaps thanks to the old astronomical affinity with mythology when it comes to naming things: Leda was a princess in Ancient Greek mythology.  
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