Jump to content


Photo

Variable Discovery at UnderOak Observatory

  • Please log in to reply
9 replies to this topic

#1 NJScope

NJScope

    Ranger 4

  • *****
  • Posts: 378
  • Joined: 08 Mar 2004
  • Loc: NJ

Posted 01 December 2012 - 03:04 PM

I managed to discover a new variable in Pisces during an ongoing photometric study of the main-belt asteroid 95 Arethusa. After most sessions that last more than 2 hours at UnderOak Observatory, images are routinely examined for undocumented variable stars and for the first time in 7 years it paid off. GSC 01208-01137, which happened to be in the same field-of-view as 95 Arethusa on 15Nov2012, was flagged as a potential variable using the variable star search utility in MPO Canopus. The general shape of the lightcurve suggested one-half of an orbital cycle for a W UMa–type eclipsing binary which in the final analysis proved to be correct. Additional light curve data (B, V and R) collected between 15Nov2012 and 23Nov2012 yielded an orbital period of 0.323729 ±0.000001 d from Fourier analysis. These data, along with supporting data captured in the ASAS-3 and NSVS databases were submitted to the International Variable Star Index (VSX) for verification. Sebastián Otero, an external consultant for AAVSO and on the VSX Team, was extremely helpful in walking me through the process necessary to submit this discovery. Final approval was acknowledged on 28Nov2012; all of the supporting data can be found here at the VSX website.

#2 Ed Wiley

Ed Wiley

    Apollo

  • -----
  • Posts: 1016
  • Joined: 18 May 2005
  • Loc: Kansas, USA

Posted 01 December 2012 - 05:47 PM

Congratulations on your discovery Kevin!
Ed

#3 Hubert

Hubert

    Mariner 2

  • -----
  • Posts: 248
  • Joined: 26 Sep 2006
  • Loc: Belgium

Posted 01 December 2012 - 05:54 PM

Kevin, Congratulations

Hubert

#4 Michael Rapp

Michael Rapp

    Gemini

  • *****
  • Posts: 3322
  • Joined: 26 Apr 2004
  • Loc: Dickinson, TX

Posted 01 December 2012 - 06:56 PM

Most congratulations! Seven years....and the effort paid off. That's gotta be a thrill.

#5 Rich (RLTYS)

Rich (RLTYS)

    Fly Me to the Moon

  • *****
  • Moderators
  • Posts: 5180
  • Joined: 18 Dec 2004
  • Loc: New York (Long Island)

Posted 02 December 2012 - 09:04 AM

Congratulations, your hard work paid off. :jump:

Rich (RLTYS)

#6 ASTERON

ASTERON

    Surveyor 1

  • *****
  • Posts: 1702
  • Joined: 24 Nov 2007
  • Loc: ISRAEL

Posted 02 December 2012 - 03:36 PM

Kevin,
Hip Hip Hurrey ! :bow:
Thats a great find !
It must be very satisfying and exciting to know you have found a new Variable !
too bad tthey won't name it "Kevin -A1" or something similar :waytogo:

#7 ASTERON

ASTERON

    Surveyor 1

  • *****
  • Posts: 1702
  • Joined: 24 Nov 2007
  • Loc: ISRAEL

Posted 02 December 2012 - 03:41 PM

P.S.
The Folded light curves and the Filtered data are very impressive !

#8 NJScope

NJScope

    Ranger 4

  • *****
  • Posts: 378
  • Joined: 08 Mar 2004
  • Loc: NJ

Posted 05 December 2012 - 08:21 PM

Many thanks for everyone's kind wishes. Hopefully the next discovery won't take quite as long.

#9 old_frankland

old_frankland

    Mercury-Atlas

  • -----
  • Posts: 2607
  • Joined: 28 Mar 2005
  • Loc: San Francisco Bay Area

Posted 09 December 2012 - 01:03 PM

Congratulations! Inspiring work and dedication. Way to go, Kevin!

#10 christinam

christinam

    Viking 1

  • *****
  • Posts: 794
  • Joined: 29 Mar 2007
  • Loc: Duncan BC Canada

Posted 11 December 2012 - 12:27 AM

Excellent work! Congrats!






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics