Multiplicity of Galactic Cepheids from long-baseline interferometry - V. High-accuracy orbital parallax and mass of SU Cygni

Home

All issues

Volume 693 (January 2025)

A&A, 693 (2025) A111

Full HTML

Open Access

Table 4.

Relative astrometric position of the SU Cyg companion.

Date	HJD	Δα	Δδ	σ_PA	σ_maj	σ_min	f	θ_UD	nσ
	(Day)	(mas)	(mas)	(deg)	(mas)	(mas)	(%)	(mas)
2016-07-19 ^(b)	2457588.299	−2.482	−0.369	70.3	0.080	0.062	1.24 ± 0.19	0.323	5.3
2019-07-04	2458678.779	−2.084	−0.434	99.9	0.020	0.016	1.62 ± 0.11	0.332 ± 0.013	> 8
2020-07-01 ^(c)	2459031.313	1.135	0.533	144.8	0.015	0.007	1.66 ± 0.07	0.231 ± 0.020	> 8
2021-07-20	2459415.768	−2.975	0.219	−160.4	0.025	0.012	2.03 ± 0.16	0.328 ± 0.026	> 8
2021-09-20	2459476.675	−1.799	0.426	145.7	0.044	0.024	1.80 ± 0.26	0.400 ± 0.034	> 8
2022-08-21 ^(d)	2459812.622	−3.049	−0.323	109.8	0.041	0.017	1.75 ± 0.11	0.323	> 8
2022-08-21 ^(e)	2459812.653	−3.087	−0.310	149.8	0.021	0.011	1.74 ± 0.07 ^(a)	0.323	> 8

Notes.

^(a)

The flux ratio mentioned here is in K because of MYSTIC observations, while others are in H.

^(b)

The nights of July 18 and 19 were combined as mentioned in the text.

^(c)

The nights of June 30 and July 1 were combined as mentioned in the text.

^(d)

MIRCX observations. The nights of August 20 and 21 were combined as mentioned in the text.

^(e)

MYSTIC observations. The nights of August 20 and 21 were combined as mentioned in the text.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.