Table 1 Names, coordinates and color index (J-H) of the four studied systems.

From: Light curve analysis and evolutionary status of four newly identified short-period eclipsing binaries

Star ID

Star name

RA (J2000.0) (deg)

Dec (J2000.0) (deg)

\(J-H_{\text {mag}}\)

S1

ZTFJ000030.44+391106.9

0.12684

39.18525

0.399

S2

ZTFJ000817.08+402532.1

2.07119

40.42559

0.226

S3

ZTFJ002158.44+252934.0

5.49351

25.49279

0.487

S4

ZTFJ003357.62+415747.8

8.49012

41.9633

0.322

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