[Aavso-photometry] GJ436b comp stars...constant over time?

[Pedro Pastor]

No Tom, I haven't found any noticeable variation for the 106 and 107 stars
during the night-session.

On the other hand, I'm using the R filter. Could anybody provide me with the
respective R magnitudes for some comparation stars?

Thank you very much.

Pedro

-----Mensaje original-----
De: aavso-photometry-bounces at mira.aavso.org
[mailto:aavso-photometry-bounces at mira.aavso.org] En nombre de Tom Krajci
Enviado el: viernes, 04 de abril de 2008 15:52
Para: aavso-photometry at mira.aavso.org
Asunto: [Aavso-photometry] GJ436b comp stars...constant over time?

A bunch of folks have been working on GJ436b for some time.  Two comp stars
are most often used:  HIP 57103 (3 - 4 arcminutes NE) and GSC
1984-1884 (3 - 4 arcmin N).

Have these comps shown any variability over time?

Thanks in advance.

-------------------------------------------
Tom Krajci
Cloudcroft, New Mexico
http://picasaweb.google.com/tom.krajci

http://overton2.tamu.edu/aset/krajci/

Center for Backyard Astrophysics (CBA)
http://cbastro.org/ CBA New Mexico

American Association of Variable Star
Observers (AAVSO): KTC http://www.aavso.org/
-------------------------------------------

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