[vsnet-chat 3030] RE: EsB 365 observations and comments

[Sebastián Otero <varsao@fullzero.com.ar>]

Dear friends:
                       It's very interesting that someome has recorded a
deep fade of this star. And it's very strange the way the star is behaving
now, because the light curve goes down sometimes, but other times goes up
quickly and that doesn't seem proper of an RCB. Fraser, could you please
report your observations so they can be added to the VSNET light curve?
                       Fraser's comments encourages us to keep looking more
and more at this fascinating star.
                       Concerning the chart, I had one copy but comparison
stars are too far away so I'm using Tycho 2 magnitudes for nearby stars.

Clear skies,
Sebastián Otero.

----- Original Message -----
From: Fraser Farrell <fraserf@dove.net.au>
To: <vsnet-chat@kusastro.kyoto-u.ac.jp>
Sent: Sunday, June 04, 2000 1:44 PM
Subject: [vsnet-chat 3025] EsB 365 observations and comments


> G'day all,
>
> I have finally had a chance to read a month's worth of my email and note
> the recent messages about EsB 365.
>
> I announced this variable on vsnet back in 1996 and a quick search of "EsB
> 365" will turn up numerous messages since then.  Personally I would be
> surprised if I prove to be the discoverer of its variability, because it
> is a well-known object to southern observers.
>
> The AAVSO seem to have lost the prelim chart I uploaded to them in 1996;
> if you want one you can get a GIF image chart from my new webserver at:
> http://198.142.100.192/astronomy/esb365.zip.
>
> Having myself witnessed this star fade to below 12th magnitude, and
> having failed to uncover a definite period after years of observation,
> I am inclined to regard it as an RCB type.  However, I'm sympathetic to
> the idea that the "RCB" class may include several species of objects;
> some of which tend towards RV or other classes.
>
> Further discussion (and Observations!) are encouraged.
>
>
>
> cheers,
> Fraser Farrell
>
> http://vsnet.dove.net.au/~fraserf/
>

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp