UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

The expansion of the outer circumstellar shell of P Cygni

Meaburn, J; Lopez, JA; Barlow, MJ; Drew, JE; (1996) The expansion of the outer circumstellar shell of P Cygni. Monthly Notices of the Royal Astronomical Society , 283 (3) L69-L71. 10.1093/mnras/283.3.L69. Green open access

[thumbnail of meaburn96_PCyg_283-3-L69.pdf]
Preview
Text
meaburn96_PCyg_283-3-L69.pdf - Published version

Download (529kB) | Preview

Abstract

The expansion of a faint, outer irregular shell to the circumstellar nebulosity of the luminous blue variable P Cygni has been measured with the Manchester Echelle Spectrometer combined with the high-altitude San Pedro Mártir 2.1-m UNAM telescope. This is the first ever measurement of the expansion velocity of such a historic remnant of a luminous blue variable star eruption. The faintness of the outer shell and the high brightness and close proximity of the star make it a particularly difficult observation. The high optical luminosity of the spectrometer and the clarity of the sky have combined to permit a successful measurement. A radial expansion velocity of 185 ± 10 km s−1 is implied, which suggests an age of 2100 ± 200 yr for this 1.6 arcmin diameter outer shell, if we assume a distance of 1.8 kpc to P Cygni.

Type: Article
Title: The expansion of the outer circumstellar shell of P Cygni
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/mnras/283.3.L69
Publisher version: https://doi.org/10.1093/mnras/283.3.L69
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10096120
Downloads since deposit
14Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item