NGC 2374 is an open cluster within the Canis Major constellation.It is approximately 3950 light years from the sun. It is composed of both bright and faint stars. The estimated age of this cluster is 75 million years. It was discovered by astronomer William Herschel in 1785.
This cluster was analysed by taking 15 images by the Prompt 6 telescope located in Chile via Skynet. The images were taken in the B(47.24 seconds),V (23.62 seconds ) and R(15.75 seconds) filters. These images were stacked and formed into a tri-color image using Afterglow. Below is the tri-color image that resulted:
Photometry data I collected from the cluster images was then used within the ClusterMancer website to analyze NGC 2374. On this site the data underwent field star removal and isochrone matching. Gaia and 2MASS photometry catalogue values were then added to my data. After this process the following HR diagrams were created: RP vs BP-RP, V vs B-V, R vs B-R, and H vs J-H plots respectively:
This analysis provided me the following data for NGC 2374:
Proper Motion RA | -4.65 |
Proper Motion DEC | 0.66 |
Distance | 1.3 KPC |
Log (age) | 8.15 years |
Metallicity | -0.4 |
E(B-V) | 0.31 |
Using this data I created the following de-reddened image in Afterglow:
De-reddened image of NGC 2374 using E(B-V) = 0.31 as the reddening value
After completing my analysis the task now was to compare my data with that obtained by the Milky Way Stars Cataologue. Below is an RP vs BP-RP HR graph created using isochrone matching from the MWSC data for my cluster:
Both graphs seem to fit the data well. One issue was that the MWSC catalogue did not have a metallicity value so as per lab instructions I estimated it to be zero. According to Wikipedia this cluster contains two blue stragglers, however in my analysis I was not successful in locating them.
Inititally I found this project a bit frustrating as I struggled with field star removal and making coherent HR diagrams. However that frustration subsided as I gained more practice with test data from different clusters.