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| Query : 2022RNAAS...6...40M |
2022RNAAS...6...40M - Research Notes of the AAS, 6, 40 (2022/February-0)
New Determinations of the Rotational Periods of 78 Vir (A2p SrCrEu) and 52 Her (A1p SiSrCr).
MONIER R. and MARY D.
Abstract (from CDS):
The TESS lightcurves of the two cool Ap stars, 78 Vir and 52 Her, are used to derive new rotational periods for both stars. A frequency analysis of the light curve of 52 Her with the Generalized Lomb-Scargle periodogram reveals a periodic structure with three harmonics. The inverse of the fundamental frequency yields a rotational period of 3.840 ± 0.037 days for 52 Her. The same analysis for 78 Vir yields two harmonics with a rotation period of 3.718 ± 0.037 days, only slightly shorter than previous determinations.
Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.
Journal keyword(s): Chemically peculiar stars
Simbad objects: 2
| Number of rows : 2 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | * o Vir | a2* | 13 34 07.9312445507 | +03 39 32.288960317 | 4.96 | 4.96 | 4.94 | 4.86 | 4.89 | ApEuCrSr | 356 | 0 |
| 2 | * 52 Her | a2* | 16 49 14.21821 | +45 58 59.9620 | 4.914 | 4.823 | A1VpSiSrCr | 267 | 0 |
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