2022RNAAS...6...24A

Query : 2022RNAAS...6...24A

2022RNAAS...6...24A - Research Notes of the AAS, 6, 24 (2022/February-0)

X-Ray Chronicles of Alpha Centauri: The Swooning of α Cen B.

AYRES T.

Abstract (from CDS):

The central AB binary of Alpha Centauri has been visited regularly by Chandra X-ray Observatory since late 2005. Up to mid-2020, the B component, an early K dwarf, had traced out a relatively smooth 8 yr coronal (T ∼ 2 MK) activity cycle. Recently, however, B's X-ray count rate suddenly dipped, from cycle maximum levels to near minimum in just 16 months. Previous cycle decays were 3-4 yr. The significance of the swoon remains to be seen.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): X-ray stars - Stellar activity - Solar cycle

Simbad objects: 4

goto Full paper

goto View the references in ADS

Number of rows : 4
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 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1925 0
2 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 1092 2
3 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
4 * alf Cen ** 14 39 36.50 -60 50 02.3   0.4 -0.1     G2V+K1V 1031 0

To bookmark this query, right click on this link: simbad:objects in 2022RNAAS...6...24A and select 'bookmark this link' or equivalent in the popup menu