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.
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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 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 |
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