RX And

Affiliation
American Association of Variable Star Observers (AAVSO)
Mon, 10/09/2023 - 18:52

Hello everyone,

RX And now a revolutionary, and it is growing. 

 

Greetings to you

Affiliation
American Association of Variable Star Observers (AAVSO)
Hi,


Looking for…

Hi,


Looking for interesting CVs I did 2 series on the last days in V and plan to observe it tomorrow 11 Oct. 

Glad something intriguing is happening.

 

Kind regards,

Nikola

Affiliation
American Association of Variable Star Observers (AAVSO)
RX And

Hi Nikola,

Indeed, it is very exciting. RX And was very cooperative in my first observation of it. I will observe it again on October 10th if the weather is good, but I may have missed the peak brightness.

Best regards,

Khalid

Affiliation
American Association of Variable Star Observers (AAVSO)
Hi Khalid, Just saw your…

Hi Khalid,

Just saw your observations. Looks like it's getting interesting. I'm going to do a series in V tonight, Oct 11, to see what happens.

I wanted to be able to run it in B and V (not only in V), but most probably I won't have that opportunity today for technical reasons.

Regards,

Nikola

Affiliation
American Association of Variable Star Observers (AAVSO)
Last night I managed to do a…

Last night I managed to do a 2 hour series of RX And.

The star has really increased its brightness dramatically.

Interestingly, when there is an outburst, the light curve is stable and does not change. I got almost a straight line around 10.8 mag.

I am sharing two light curves I got 5 days apart for comparison:

Well done, Khalid!

Affiliation
British Astronomical Association, Variable Star Section (BAA-VSS)
First few observations. Lucky?

I just uploaded obs from a while ago as I have only just managed to learn how to calibrate and this was interesting to see.

Although they are only single obs (Stack of three) this star seems to be active. They seem to compare favourably with other observers although my errors are large as this is near my limit. They're not transformed as I'm having trouble with that.

RX AND 2460319.31991 2024 Jan. 09.81991           13.861   0.029     V            

RX AND 2460319.31843 2024 Jan. 09.81843           14.283   0.027     B

RX AND 2460319.30382 2024 Jan. 09.80382           14.007   0.027     V            

 

RX AND 2460325.35024 2024 Jan. 15.85024           12.000   0.024     B

RX AND 2460325.34747 2024 Jan. 15.84747           11.879   0.007     V

 

RX AND 2460328.33917 2024 Jan. 18.83917           13.777   0.024     V

RX AND 2460328.33300 2024 Jan. 18.83300           14.068   0.025     B

 

RX AND 2460336.29435 2024 Jan. 26.79435           11.725   0.033     B            

RX AND 2460336.29970 2024 Jan. 26.79970           11.630   0.035     V

Is this quite an active star?

Comments welcome. Always looking to improve.

Affiliation
American Association of Variable Star Observers (AAVSO)
Reasonable Errors

Kevin:

Your reported errors are reasonable. You should expect a few hundredths as normal magnitude error for repeated analyses. Observers who report a few millimag error are almost certainly just using one image and one comp and therefore reporting the 1/SNR error. That is the error that is unrealistic!

Ken

PS: Do a quick web search on RX AND and wikipedia will tell you about the activity of this UGZ star. Obviously, the LC tells you that as well. You indicated that your results match 'favourably'?

You're only one click away from transforming in TA once you use the Time Series Photometry analysis rather than Single Image Photometry.