-- 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.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
Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf 0003327.pdf r1 manage 726.3 K 28 Feb 2019 - 13:36 AriannaSaba  
PDFpdf 0711.3104.pdf r1 manage 149.4 K 28 Feb 2019 - 13:35 AriannaSaba  
PNGpng Schermata_2019-02-28_alle_13.18.49.png r1 manage 827.8 K 28 Feb 2019 - 13:35 AriannaSaba  
PNGpng Schermata_2019-02-28_alle_13.35.12.png r1 manage 57.9 K 28 Feb 2019 - 13:35 AriannaSaba  
PNGpng Schermata_2019-02-28_alle_14.53.03.png r1 manage 74.9 K 28 Feb 2019 - 14:54 AriannaSaba  
PNGpng Schermata_2019-02-28_alle_14.53.30.png r1 manage 67.0 K 28 Feb 2019 - 14:54 AriannaSaba  
PNGpng calibratedhr.png r1 manage 19.6 K 28 Feb 2019 - 13:33 AriannaSaba  
PNGpng colold.png r1 manage 42.1 K 28 Feb 2019 - 15:28 JacobChambers  
PNGpng m35_bckmap_101.png r1 manage 35.6 K 28 Feb 2019 - 15:11 JacobChambers  
PNGpng m35_bckmap_51.png r1 manage 46.7 K 28 Feb 2019 - 15:11 JacobChambers  
PNGpng m35_bcksubframe.png r1 manage 36.9 K 28 Feb 2019 - 15:19 JacobChambers  
PNGpng m35_bcksubframe2.png r1 manage 257.3 K 28 Feb 2019 - 15:38 JacobChambers  
PNGpng m35_colhist.png r1 manage 47.7 K 28 Feb 2019 - 15:12 JacobChambers  
PNGpng m35_rowhist.png r1 manage 48.7 K 28 Feb 2019 - 15:12 JacobChambers  
PNGpng m36_green_stars_of_interest.png r1 manage 119.1 K 28 Feb 2019 - 13:33 AriannaSaba  
PNGpng m36_hr_comparison.png r1 manage 22.7 K 28 Feb 2019 - 13:41 AriannaSaba  
PNGpng m36_hr_comparison_aladin.png r1 manage 26.7 K 28 Feb 2019 - 14:49 AriannaSaba  
PNGpng m36_truncated_histogram_green.png r1 manage 38.7 K 28 Feb 2019 - 13:33 AriannaSaba  
PNGpng m36_truncated_histogram_green_copia.png r1 manage 36.7 K 28 Feb 2019 - 13:33 AriannaSaba  
PNGpng rowold.png r1 manage 43.8 K 28 Feb 2019 - 15:28 JacobChambers  
PNGpng starmatch.png r1 manage 15.0 K 28 Feb 2019 - 15:44 JacobChambers  
PNGpng truncatedhist.png r1 manage 26.8 K 28 Feb 2019 - 13:34 AriannaSaba  
PNGpng truncatedhist1.png r1 manage 26.1 K 28 Feb 2019 - 13:34 AriannaSaba  
Edit | Attach | Watch | Print version | History: r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions

Physics WebpagesRHUL WebpagesCampus Connect • Royal Holloway, University of London, Egham, Surrey TW20 0EX; Tel/Fax +44 (0)1784 434455/437520

Topic revision: r2 - 28 Feb 2019 - JacobChambers

 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2021 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback