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
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
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