RR Lyrae Variable Stars in M3 (Vitali)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 3 · NGC 5272

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RR Lyrae Variable Stars in M3

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RR Lyrae Variable Stars in M3

The lively globular cluster M3 contains more than 200 variable stars. Many of them are RR Lyrae periodic variables, which are used for measuring distances, because they have a good correlation between period and luminosity.

I've processed calibrated images taken on the night from 7th to 8th March (it is an ongoing project) using the VaST [Variability Search Toolkit]. It found about 50 variable stars. Three of them are presented here:

NGC 5272 173

NGC 5272 181

NGC 5272 1308

They all have period about 12 hours and I was lucky to image during the brightening phase.

Revision A shows the three stars along with SIMBAD catalog annotations. The light curves (Revision B) obtained with VaST have a typical RR Lyrae shape. Revision C shows animation of 2 frames taken 2.5 hours apart. A few other variables are visible too.

It was fun to actually detect and see these short period variable stars.

Thanks for looking,

Vitali

Final
Original
B
C

B

Description: Light curves of three prominent variables. Obtained with VaST.

Uploaded: ...

C

Description: Two frames animation. Just 2.5 hours between frames. Shows the three stars and some other.

Uploaded: ...

Globular Star Clusters

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Status	Advanced failed
Started	...
Astrometry.net job	4330134
PixInsight job	R0KOXQ6G919XHGA910YIVE1GJCKO837C
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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RR Lyrae Variable Stars in M3

RR Lyrae Variable Stars in M3

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Image Index:

Contribution Index (beta):

RR Lyrae Variable Stars in M3

RR Lyrae Variable Stars in M3

Equipment

Acquisition details

Description

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Revisions

B

C

Sky plot

Histogram

In these public groups

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