Rotation Periods of Low-Mass Stars of the Upper Scorpius OB Association

Details Rotation Periods of Low-Mass Stars of the Upper Scorpius OB Association Rotation Periods of Low-Mass Stars of the Upper Scorpius OB Association

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....116..237a&link_type=abstract

The Astronomical Journal, Volume 116, Issue 1, pp. 237-244.

Astronomy and Astrophysics

Astronomy

7

Stars: Evolution, Stars: Pre-Main-Sequence, Stars: Rotation, Stars: Spots

Scientific paper

We present results from a rotation period study of 21 pre-main-sequence stars in the Upper Scorpius OB association. Eleven stars have periodic variability consistent with stellar rotation. We discuss the period-searching methods and false-alarm probability calculations. Since the pre-main-sequence population of the Upper Sco region has not been examined as thoroughly as those of other star-forming regions, we compare our results with the Taurus-Auriga and Trapezium star-forming regions. We note a different distribution of P_rot in Upper Sco. We use the P_rot distribution to estimate the stellar spin-up times in this association.

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