Difference: Meeting2802 (1 vs. 2)

Revision 228 Feb 2019 - JacobChambers

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META TOPICPARENT name="StewartBoogertPhotometry2018"
-- AriannaSaba - 28 Feb 2019
Line: 38 to 38
  m36_green_stars_of_interest.png
Changed:
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<
m36_truncated_histogram_green.pngm36_truncated_histogram_green_copia.pngtruncatedhist.pngtruncatedhist1.png
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>
m36_truncated_histogram_green.pngm36_truncated_histogram_green_copia.png

truncatedhist1.png

JC:

  • Have updated my background algorithm (previous wasn't precise enough)
  • Now able to cope with background gradient over image
  • subtracting background array from original array using M35 data:
m35_bckmap_51.pngm35_bckmap_101.png

  • Using a 101x101 pixel box size, the background subtracted array:
m35_bcksubframe2.png

  • Difference between old and new background algorithm on row/col sum plots:
  • Old:
rowold.pngcolold.png

  • New:

m35_rowhist.pngm35_colhist.png

  • Attempt at matching stars between 2 frames. This was done roughly by shifting all stars in second frame by distance between brightest star in both frames (sorry this was last minute! Need to optimise algorithm to detext more stars):
starmatch.png
 
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META FILEATTACHMENT attachment="calibratedhr.png" attr="" comment="" date="1551360808" name="calibratedhr.png" path="calibratedhr.png" size="20080" user="zbvd241" version="1"
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Revision 128 Feb 2019 - AriannaSaba

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META TOPICPARENT name="StewartBoogertPhotometry2018"
-- AriannaSaba - 28 Feb 2019

Papers on the Photometry of M36, also known as NGC 1960

0003327.pdf 0711.3104.pdf

NGC 1960 list of objects with published V and B-V values can be found online at:

http://cdsportal.u-strasbg.fr/?target=M%20%2036

http://simbad.u-strasbg.fr/simbad/sim-coo?Coord=05+36+18%2B34+08.4&CooFrame=ICRS&CooEqui=2000.0&CooEpoch=J2000&Radius=10.0&Radius.unit=arcmin&submit=get+the+list+of+objects

Image taken from: https://aladin.u-strasbg.fr/AladinLite/

to compare the pattern to our image

Schermata_2019-02-28_alle_13.18.49.png

published HR diagram:

Schermata_2019-02-28_alle_13.35.12.png

HR diagram compared to data from paper above, only 10 stars were available:

m36_hr_comparison.png

Data compared to ALADIN, 160 out of 400 plotted:

m36_hr_comparison_aladin.png

Schermata_2019-02-28_alle_14.53.03.png

Schermata_2019-02-28_alle_14.53.30.png

calibratedhr.png

m36_green_stars_of_interest.png

m36_truncated_histogram_green.pngm36_truncated_histogram_green_copia.pngtruncatedhist.pngtruncatedhist1.png

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