VSX : Detail for ksi Boo

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Name

ksi Boo

AAVSO UID

000-BCT-937 (354 observations)

Constellation

Boötes

Sequence

J2000.0

14 51 23.38 +19 06 01.6 (222.84742 +19.10044)

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B1950.0

14 49 04.85 +19 18 23.1

Proper motion

RA: 154.98 mas/y

Dec: -66.43 mas/y

Source: F. Van Leeuwen, 2007

Galactic coord.

23.086 +61.356

Other names

(Internal only)

37 Boo	1RXS J145123.1+190606	AAVSO 1446+19
ADS 9413 AB	BD+19 2870	GJ 566.0 AB
HD 131156	HIP 72659	HR 5544
SAO 101250	SVS 2491

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Variability type

BY:

Spectral type

G8V+K4V

Mag. range

4.52 - 4.67 V

Discoverer

Epoch

Outburst

Period

10.137 d

Rise/eclipse dur.

Remarks

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GCVS Team

ADS 9413 AB (4.7m, G8V; 6.6m, K4V; A = 4.884", P = 149.95a). LiI lambda 6708 line is present in the G8V spectrum. Both spectra show manifestations of chromospheric activity, emissions of H and K Ca II. Soft X-ray source. Probably it is component A that is variable, though variability of H and K CaII emission with the cycle 10 - 11 years is observed for component B.

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References

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R.de la Reza, C.A.O.Torres, I.C.Busko, MN 194, 829, 1981.

1981MNRAS.194..829D

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