2022A&A...666L...6M


Query : 2022A&A...666L...6M

2022A&A...666L...6M - Astronomy and Astrophysics, volume 666, L6 (2022/10-1)

Radio interferometric imaging of RS Oph bipolar ejecta for the 2021 nova outburst.

MUNARI U., GIROLETTI M., MARCOTE B., O'BRIEN T.J., VERES P., YANG J., WILLIAMS D.R.A. and WOUDT P.

Abstract (from CDS):

The recurrent nova and symbiotic binary RS Oph erupted again in August 2021 for its eighth known outburst. We observed RS Oph 34 days after the outburst at 5 GHz with the European VLBI Network (EVN). The radio image is elongated over the east-west direction for a total extension of about 90 mas (or about 240 AU at the Gaia DR3 distance $ d=2.68_{-0.15}^{+0.17} $ kpc), and shows a bright and compact central component coincident with the Gaia astrometric position, and two lobes east and west of it, expanding perpendicular to the orbital plane. By comparing with the evolution of emission-line profiles on optical spectra, we found the leading edge of the lobes to be expanding at ∼7550 km s–1, and i = 54° as the orbital inclination of the binary. The 2021 radio structure is remarkably similar to that observed following the 2006 eruption. The obscuring role of the density enhancement on the orbital plane (DEOP) is discussed in connection to the time-dependent visibility of the receding lobe in the background to the DEOP, and the origin of the triple-peaked profiles is traced to the ring structure formed by the nova ejecta impacting the DEOP.

Abstract Copyright: © U. Munari et al. 2022

Journal keyword(s): novae, cataclysmic variables - stars: winds, outflows

Simbad objects: 2

goto Full paper

goto View the references in ADS

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 - 2024
#notes
1 QSO J1745-0753 BLL 17 45 27.10494973 -07 53 03.9478191       17.85   ~ 83 1
2 V* RS Oph Sy* 17 50 13.1591484960 -06 42 28.480729788   11.884 10.776 11.228   K5.5/M0IIIe 1092 0

To bookmark this query, right click on this link: simbad:objects in 2022A&A...666L...6M and select 'bookmark this link' or equivalent in the popup menu