AAVSO Special Notice #180: Request for observations of V420 Aur in support of Spitzer Space Telescope observations

Dr. Gordon Sarty, University of Saskatchewan, requests special
assistance with his ongoing project to observe high mass X-ray binaries
(HMXBs).  See AAVSO Alert Notice 377 and Special Notice 175 for more
information on the current project.  Dr. Sarty provides the following
text for the current request:


"On November 29, 2009 from 18:40 to 22:35 UT the Spitzer IRAC instrument
will observe the HMXB V420 Aur in an effort to observe clumpy
circumstellar material pass behind the high mass B[e] star. This is the
first of four 4 hour Spitzer observations of HMXBs planned. Continuous
time-series observations in one filter that are simultaneous with the
Spitzer observations will be the most valuable. The filters to use, in
order of preference, are: V, I, R, B. Please contact [Dr. Sarty] at
gordon.sarty@usask.ca to coordinate which filter to use with other
observers. The target V420 Aur is:

Desig.   Name         R.A.(2000) Dec.(2000)  Mag  LPH no.  AUID
0515+37  V420 Aur    05:22:35.2  +37:40:33.6  7.5  040    000-BCT-897

 
A project specific chart is available at:

http://homepage.usask.ca/~ges125/Astronomy/LPH040_aavso.pdf


A brief abstract of the proposed Spitzer observations may be found at:

http://adsabs.harvard.edu/abs/2009sptz.prop60055S

and an overview of the HMXB project may be found in the JAAVSO article
at:

http://www.aavso.org/publications/ejaavso/v35n2/327.shtml


Please submit your observations directly to the AAVSO International
Database.


Thanks for your ongoing coverage of the HMXBs."

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