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X Ser in outburst

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mrv
Affiliation
American Association of Variable Star Observers (AAVSO)
Tue, 09/09/2014 - 01:57

As some of you may already know, the old nova X Ser is having another dwarf nova type of outburst.  According to images I received from AAVSOnet Coker30, X Ser had brightened to 14.9V as of 9/4.  Unfortunately, Coker30 has not returned any more images for the last few nights.  If anyone else could observe this star, it would help fill out the light curve.  A V filter is best, although  B and I could be useful as well.

Thanks,

Bob

ocn
Affiliation
American Association of Variable Star Observers (AAVSO)
Tue, 09/09/2014 - 11:04
X Ser in Outburst

Greetings All,

Bob, looks like a further increase of about 0.5 mag since your obs. Thanks for bringing this activity to our attention. I remember years back, seeing unusual looking light curves of X Serpentis in an old text. I believe it was once considered somewhat like the Nc/Sym RT Ser, with a protracted, slow brightening(s) over hundreds of days. Really a rare and interesting case. Perhaps V841 Oph would repay further attention as well. Seems quite jumpy at times.

regards,

Steve

 

 

 

FJQ
Affiliation
American Association of Variable Star Observers (AAVSO)
Tue, 09/09/2014 - 21:21
X Ser in outburst

Thanks for the heads-up!  I've been monitoring this star since last March, but I haven't "looked" at my data yet.  I'll do so this evenning and submit my observations.  Here's what I got yesterday evenning:

X Ser    2456909.67316    14.672    0.034    V
X Ser    2456909.67557    14.682    0.032    V
X Ser    2456909.67796    14.685    0.039    V
X Ser    2456909.66814    14.876    0.051    B
X Ser    2456909.67054    14.894    0.064    B
X Ser    2456909.66301    14.230    0.016    I
X Ser    2456909.66542    14.262    0.017    I

Un-transformed, ensemble magnitudes around air-mass 1.7 to 1.8.  I'll shoot some more as soon as it gets dark to shoot at more reasonable air masses.

James