Research – 1 ( The Pleiades)

  • barc 

This research has done by the founder of the “Bangladesh Astronomy Research Center (BARC).”

Researcher:  Hasibul Hossain Rifat


Project-1: (Determine parallax of Pleiades)

Part – 1,2,3,4,5,6,7
29/12/2019, 3:30 am

As you guys know I was started working on the Pleiades which is a star cluster. I am working on its data. Here are the details about the work.

Part-1: (TGAS Cone Search):

Initially, I’ve selected the keyword in this cone search and then submitted the object name. Then I’ve chosen the data about pleaded set the parallax angle, radius and so on.

Part-2: (Proper Motion Plot):

In section 2, I’ve plotted the data into the plane lot option and got this graphically attached picture. In this picture, you might be seen some blue dots which are the comoving cluster.

Part- 3: (Parallax Histogram):

I’ve plotted those data into the parallax histogram section and in this picture, you can see it.

Part-4: (Exclude proper motion outliers):

This part is about to exclude proper motion outliers.

Part-5: (Cluster proper motion statistics):

This statistics table is showing us the “Cluster proper motion statistics” which has created in part-4. This cluster is the subset of part – 4. In these statistics, if you look at the “Mean and Stdev columns” then you will see the value clearly which is Pleiades parallax. The value I’ve got is
≈ 3.32915 ± 3.5 mas.

Part-6: (3D cluster positions):

In this part, we can see a 3D cluster position in the picture. It’s a sphere plot indeed.

Part-7: (Visualise proper motions):

Here I’ve visualized the proper potion of Pleiades.