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Could someone tell me where the old 1,260 R☉ for RW Cephei came from? It has been on the list of largest stars since 2010, until the 1,535 R☉ came in. Even several websites at the time gave a radius of ~1,500 R☉. ---- Joey P. - THE OFFICIAL 02:47, 10 October 2017 (UTC)
https://en.wikipedia.org/?title=List_of_largest_stars&oldid=522492647 ---- Joey P. - THE OFFICIAL 02:49, 11 October 2017 (UTC)
Thank you. --Joey P. - THE OFFICIAL ( Visit/ Talk/ Contribs) 03:24, 23 October 2017 (UTC)
The most recent paper mentioning RW Cephei in Simbad is Liu et al. (2017). It contains explicit luminosity and radius values for RW Cep, 207 L☉ and 45 R☉. The "new" red-giant-style properties are derived as part of a bulk calculation of evolved star properties, based on a near distance from a 1979 paper. They are more than a little suspect, since there is widespread acceptance that RW Cep is a highly luminous and distant hypergiant. However, it is worth remembering that the luminosity value currently in the starbox is from a 1978 paper and the various radius values are based on Stefan-Boltzmann calculations using effective temperatures from different papers, so about as close to the WP:SYNTHESIS line as can be, maybe over it. Any thoughts on what prominence we should give to this paper, if any? I hate to "ignore the data" but it really is likely to be bogus - for example Gaia DR2 gives a distance about 35 times larger than that paper. Lithopsian ( talk) 14:57, 14 November 2018 (UTC)
I'm wondering if any papers have both luminosity and temperature for RW Cep. Nussun05 ( talk) 21:16, 18 December 2020 (UTC)
The light curve data from AAVSO reveal the star is currently dimming beyond average pulsation, although no scientific papers have made a report yet. Can AAVSO be cited as a reliable source or should we wait until a peer-reviewed article is published? VY Canis Majoris ( talk) 06:21, 22 November 2022 (UTC)
It has now been reported to The Astronomer's Telegram so I've added it to the page. VY Canis Majoris ( talk) 08:26, 15 December 2022 (UTC)
The Gaia data suggests it is a member, but no reliable sources seem to explicitly state if the star is a member or not. VY Canis Majoris ( talk) 16:35, 27 January 2023 (UTC)
This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||
|
Could someone tell me where the old 1,260 R☉ for RW Cephei came from? It has been on the list of largest stars since 2010, until the 1,535 R☉ came in. Even several websites at the time gave a radius of ~1,500 R☉. ---- Joey P. - THE OFFICIAL 02:47, 10 October 2017 (UTC)
https://en.wikipedia.org/?title=List_of_largest_stars&oldid=522492647 ---- Joey P. - THE OFFICIAL 02:49, 11 October 2017 (UTC)
Thank you. --Joey P. - THE OFFICIAL ( Visit/ Talk/ Contribs) 03:24, 23 October 2017 (UTC)
The most recent paper mentioning RW Cephei in Simbad is Liu et al. (2017). It contains explicit luminosity and radius values for RW Cep, 207 L☉ and 45 R☉. The "new" red-giant-style properties are derived as part of a bulk calculation of evolved star properties, based on a near distance from a 1979 paper. They are more than a little suspect, since there is widespread acceptance that RW Cep is a highly luminous and distant hypergiant. However, it is worth remembering that the luminosity value currently in the starbox is from a 1978 paper and the various radius values are based on Stefan-Boltzmann calculations using effective temperatures from different papers, so about as close to the WP:SYNTHESIS line as can be, maybe over it. Any thoughts on what prominence we should give to this paper, if any? I hate to "ignore the data" but it really is likely to be bogus - for example Gaia DR2 gives a distance about 35 times larger than that paper. Lithopsian ( talk) 14:57, 14 November 2018 (UTC)
I'm wondering if any papers have both luminosity and temperature for RW Cep. Nussun05 ( talk) 21:16, 18 December 2020 (UTC)
The light curve data from AAVSO reveal the star is currently dimming beyond average pulsation, although no scientific papers have made a report yet. Can AAVSO be cited as a reliable source or should we wait until a peer-reviewed article is published? VY Canis Majoris ( talk) 06:21, 22 November 2022 (UTC)
It has now been reported to The Astronomer's Telegram so I've added it to the page. VY Canis Majoris ( talk) 08:26, 15 December 2022 (UTC)
The Gaia data suggests it is a member, but no reliable sources seem to explicitly state if the star is a member or not. VY Canis Majoris ( talk) 16:35, 27 January 2023 (UTC)