2024RNAAS...8...42W

Query : 2024RNAAS...8...42W

2024RNAAS...8...42W - Research Notes of the AAS, 8, 42 (2024/February-0)

Hidden Companions to Intermediate-mass Stars. XV. Discovery of a 1.2M⊙, 8.4 au Companion to the δ Scuti star HIP 41375 = 2 Hydrae.

WAISBERG I., KLEIN Y. and KATZ B.

Abstract (from CDS):

2 Hydrae is a nearby MAa = 1.66M⊙δ Scuti star with strong astrometric evidence for a close companion in addition to its known MB = 0.20M⊙ M dwarf companion at 530 au. Here we report on a VLTI/GRAVITY near-infrared interferometric observation that reveals the close companion to be a MAb = 1.18M⊙ star at a projected separation ρ = 168 mas ↔ 8.4 au. This triple system is a potential progenitor for a double white dwarf binary under the dynamical influence of an outer M dwarf companion with a low enough hierarchy for potentially interesting dynamical effects.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Multiple stars - A stars - Delta Scuti variable stars - Optical interferometry

Simbad objects: 2

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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 * 2 Hya EB* 08 26 27.2059310314 -03 59 14.749144878   5.809 5.590     F0VmA6 101 0
2 HD 71296 PM* 08 26 29.0157651240 -02 44 18.321016632   8.71 7.59     K0III 15 0

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