[vsnet-flare 27] Flare stars and other rapid brightenings

["Sebastian Otero" <varsao@fullzero.com.ar>]

>>>>Regarding observations of flare stars, I was lucky earlier this month to
visually catch a flare in UV Cet.  My observations were:

DEC 01.0417  2452609.5417   12.0   AAVSO chart
DEC 01.0451  2452609.5451   11.0
DEC 01.0590  2452609.559    11.9
DEC 01.0687  2452609.5687   12.0

It was really amazing how the star brightened by at least a magnitude in a
matter of minutes.  It also faded rapidly too.  By the time I sent out an
alert notice it had already faded to quiescence.


Dear Doug,
What a nice catch!!

Two of the most interesting brightness changes I detected were:
1) The rising branch of SX Phe whan at maximum amplitude (from 7.5 to 6.8 in
a matter of 15 or 20 minutes)
and 2) a brightening of ~0.3 mag. (Or something like that) in BF Ori in an
hour or so..
But not a flare star!

The problem is that once you detect aflare you will probably be the only
person in the world able to observe it...
As taichi and Stan wrote, an organizaed campaign is needed if one wants some
useful results...
Anyway, catching this events must be rewarding.

Best wishes,
Sebastian.



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.423 / Virus Database: 238 - Release Date: 25/11/02

VSNET Home Page

Return to Daisaku Nogami

---

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