This image from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile, shows the bright open star cluster NGC 2547.
Observations with theSpitzer Space Telescope showed a shell around theB3 III/IV-type starHD 68478. This could be a sign of recent mass loss in this star.[5]
A study usingGaia DR2 data showed that NGC 2547 formed about 30 million years ago together with a new discovered star cluster, called [BBJ2018] 6.[6][7] The star cluster NGC 2547 has a similar age compared withTrumpler 10,NGC 2451B,Collinder 135 andCollinder 140. It was suggested that all these clusters formed in a single event oftriggered star formation.[8]
Observations with theSpitzer Space Telescope have shown that ≤1% of the stars in NGC 2547 have infrared excess in 8.0 μm and 30-45% of theB- toF-type stars have infrared excess at 24 μm.[10]
The system2MASS J08090250-4858172, also called ID8 is located in NGC 2547 and showed substantial brightening of thedebris disk at a wavelength of 3 to 5 micrometers, followed by a decay over a year. This was interpreted as a violentimpact on aplanetary body in this system.[11]
NGC 2547 contains nineM-dwarfs with 24 μm excess. These could bedebris disks and the material could be orbiting close to thesnow line of these stars, indicating thatplanet-formation is underway in these systems.[12] Later it was suggested that these M-dwarfs might containPeter Pan Disks.[13]2MASS 08093547-4913033, which is one of the M-dwarfs with a debris disk in NGC 2547 was observed with theSpitzer Infrared Spectrograph. In this system the first detection ofsilicate was made from a debris disk around an M-type star.[14]
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Media related toNGC 2547 at Wikimedia Commons
