[vsnet-chat 3597] Re: V446 Her companion photometry

[Alon Retter <ar@astro.keele.ac.uk>]

Dear Arne and V446 Her observers,

Please note that Arne's designations for the comparison stars is 
different from that in Honeycutt et al.'s paper:

Honeycutt      Arne

A (nova)        -
B               A
C               B
-               C

Regards,
Alon
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On Thu, 7 Sep 2000 aah@nofs.navy.mil wrote:

> Here are results from psf-fitting the triplet of
> companion stars to V446 Her.  The stars are labelled
> A,B,C, where A and B are identified on the finding chart
> in Honeycutt, et al. 1998, ApJ 495, 933, and star C
> is the faint companion due west of the variable.
> The RA,DEC offsets are in arcsec, positive east and north.
> 
> Star   RA    DEC     V    err   B-V   err   V-R   err   R-I   err
>   A   1.49  -2.75  17.90  0.02  1.33  0.04  0.78  0.03  0.67  0.02
>   B  -2.18  -2.53  18.51  0.02  1.28  0.08  0.74  0.01  0.75  0.01
>   C  -2.62  -0.39  20.87  0.25  1.10  0.52  1.08  0.24  0.75  0.25
>   
> These numbers are more reliable than the values in the Honeycutt
> paper since the current images had better seeing and higher
> signal/noise.
>   V446 Her itself is at
>     18:57:21.61  +13:14:29.7  J2000
> again improved over the Honeycutt paper through the use of USNO-A2.0.
> Since the variable is about V=16.5 and B-V = 0.27, you must be careful
> to remove these three stars when doing photometry or you will report the
> variable as being too bright; this is especially true at the
> red wavelengths or with unfiltered photometry.
> 
> Arne
>

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