<p>I'm new here, so if I've done anything wrong, please let me know.</p>

<p>I've been taking a look at some photometry data collected from TESS, and I encountered this light curve:</p>

<p><a href="https://i.sstatic.net/qAddB.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/qAddB.png" alt="light curve"></a></p>

<p>(please ignore the blue and orange lines, I was trying to run some statistical analysis on the data)</p>

<p>I haven't seen a light curve this curvy before, and I was wondering what this was indicative of.</p>

<p>I was also wondering about the spike at around time 1326, would this potentially be an outlier?</p>

<p>Thank you!</p>

CC BY-SA 4.0
2020-01-22T23:21:14.750Z
Can you show the curve in a smaller range arounf 1326? My first impression is that this is a spotted star, with a rotation period of around 5 days and that the feature you have identified is a flare. A typical flare will show an abrupt rise and a slower decay.
ProfRob
CC BY-SA 4.0
2020-01-23T18:44:49.717Z
"This curvy"-- do you mean the cycle frequency is high, or the peak-peak ratio is large?
Carl Witthoft
CC BY-SA 4.0
2020-01-23T22:58:15.950Z
@RobJeffries, sure, here is the bigger image around 1326: https://imgur.com/a/MNLhqFj

Thank you so much!
will
CC BY-SA 4.0
2020-01-23T23:21:45.953Z
Still not zoomed in enough to see what is going on.
ProfRob
<amateur-observing><light-curve><tess>
A basic question about light curves
will
# A basic question about light curves

(Asked by: username_0 on 2020-01-22)

I'm new here, so if I've done anything wrong, please let me know.

I've been taking a look at some photometry data collected from TESS, and I encountered this light curve:

[![light curve](https://i.sstatic.net/qAddB.png)](https://i.sstatic.net/qAddB.png)

(please ignore the blue and orange lines, I was trying to run some statistical analysis on the data)

I haven't seen a light curve this curvy before, and I was wondering what this was indicative of.

I was also wondering about the spike at around time 1326, would this potentially be an outlier?

Thank you!

**Tags:** amateur-observing, light-curve, tess

> **Comments:**
> **username_1**: Can you show the curve in a smaller range arounf 1326? My first impression is that this is a spotted star, with a rotation period of around 5 days and that the feature you have identified is a flare. A typical flare username_0 show an abrupt rise and a slower decay.  
> **username_2**: "This curvy"-- do you mean the cycle frequency is high, or the peak-peak ratio is large?  
> **username_0**: @RobJeffries, sure, here is the bigger image around 1326: https://imgur.com/a/MNLhqFj  Thank you so much!  
> **username_1**: Still not zoomed in enough to see what is going on.  

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## 0 answers

