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A statement was added that Colin Henshaw was co-discoverer of the supernova. I'd never seen that claim before, and in searching for that, I found the following set of slides claiming that. However, that set of slides references this web page from the space telescope institute, which explicitly cites only Ian Shelton as discoverer. I've reverted the change until we can find a contemporaneous and reliable source with the claim. Tarl N. ( discuss) 19:37, 24 March 2017 (UTC)
Hi!
I find some links.
http://www.manastro.co.uk/2011_09.pdf
http://adsabs.harvard.edu/full/1988PASAu...7..352M
http://albireo.percek.hu/archiv_AlbireoBiblio_146_191.html
The original publication is:
Quarterly Journal of Royal Astronomical Society. 28 (4) 533-534. 1987 December. https://books.google.hu/books?id=KVqmniPg_SMC&pg=PA135&lpg=PA135&dq=1987a+colin+henshaw&source=bl&ots=0eLKg91AmM&sig=Akay73HbnGYpxk643KD5mnpn_sM&hl=hu&sa=X&ved=0ahUKEwjbq5TMl_HSAhVGCZoKHRSzAM8Q6AEIGzAA#v=onepage&q=1987a%20colin%20henshaw&f=false
Unfortunately, the original publication is not available on the web. Misib2 ( talk) 08:06, 25 March 2017 (UTC)
You are not a source. Cynthia A. Steinke book is a source. So it is not your decision. Your opinion does not count !! Give me a source which support your opinion. Misib2 ( talk) 16:41, 25 March 2017 (UTC)
Would you please read the following article.
Henshaw, Colin: The independent discovery of SN 1987 in the LMC, from Zimbabwe. Quarterly Journal of Royal Astronomical Society. 28 (4) 533-534. 1987 December. Misib2 ( talk) 06:22, 26 March 2017 (UTC)
Well! For the sake of the readers of this discussion may I ask you to summarize the date and the time of all our known independent observeries, please. Thanks in advance. Misib2 ( talk) 08:07, 26 March 2017 (UTC)
I believe the definitive record is the IAU CBAT circular from 24-February. The sequence of events and timeframes:
Note that Henshaws's observations would have been about this time (Feb 24.9), although he didn't report them; the simple geometry of earth rotation meant that Zimbabwe was in daylight when Chile and New Zealand observations were made. It's interesting that he made an independent discovery (as did Jones and probably thousands of amateur astronomers), but he doesn't get the credit discovery. Tarl N. ( discuss) 16:05, 26 March 2017 (UTC)
I don't see the mass of the progenitor listed anywhere here. This page [1] suggests it was about ~18 Solar M(o). Fig ( talk) 14:58, 17 August 2020 (UTC)
There is a good deal of discussion of the cause of the inner ring around the star, but none of the two rings overlapping one another that are not centred around the star.
What is the cause of those extra two rings? Also, there are two very bright stars and one less-bright reddish star on or nearly on the two rings. Are they coincidental near stars that merely happen to be on the path to the supernova? VictoriaWordNerd ( talk) 23:19, 18 August 2020 (UTC)
References
Does it really not have a name other than 'SN 1987A remnant'? It's a planetary nebula, right? Arlo James Barnes 09:49, 13 July 2022 (UTC)
The JWST is scheduled to observe SN 1987A for 7 1/2 hours on 2022-07-16 UTC. I don't have recent editing experience; would one of you care to add this to the article? The source is https://www.stsci.edu/files/live/sites/www/files/home/jwst/science-execution/observing-schedules/_documents/2219603f02_report_20220715.txt , which is linked to by https://www.stsci.edu/jwst/science-execution/observing-schedules — Wdfarmer ( talk) 20:51, 15 July 2022 (UTC)
This is the
talk page for discussing improvements to the
SN 1987A article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
Archives:
Index,
1Auto-archiving period: 90 days
![]() |
![]() | This ![]() It is of interest to the following WikiProjects: | |||||||||||||||||||||||
|
![]() | A fact from this article was featured on Wikipedia's Main Page in the On this day section on February 23, 2012, February 23, 2016, February 23, 2017, February 23, 2018, and February 23, 2024. |
A statement was added that Colin Henshaw was co-discoverer of the supernova. I'd never seen that claim before, and in searching for that, I found the following set of slides claiming that. However, that set of slides references this web page from the space telescope institute, which explicitly cites only Ian Shelton as discoverer. I've reverted the change until we can find a contemporaneous and reliable source with the claim. Tarl N. ( discuss) 19:37, 24 March 2017 (UTC)
Hi!
I find some links.
http://www.manastro.co.uk/2011_09.pdf
http://adsabs.harvard.edu/full/1988PASAu...7..352M
http://albireo.percek.hu/archiv_AlbireoBiblio_146_191.html
The original publication is:
Quarterly Journal of Royal Astronomical Society. 28 (4) 533-534. 1987 December. https://books.google.hu/books?id=KVqmniPg_SMC&pg=PA135&lpg=PA135&dq=1987a+colin+henshaw&source=bl&ots=0eLKg91AmM&sig=Akay73HbnGYpxk643KD5mnpn_sM&hl=hu&sa=X&ved=0ahUKEwjbq5TMl_HSAhVGCZoKHRSzAM8Q6AEIGzAA#v=onepage&q=1987a%20colin%20henshaw&f=false
Unfortunately, the original publication is not available on the web. Misib2 ( talk) 08:06, 25 March 2017 (UTC)
You are not a source. Cynthia A. Steinke book is a source. So it is not your decision. Your opinion does not count !! Give me a source which support your opinion. Misib2 ( talk) 16:41, 25 March 2017 (UTC)
Would you please read the following article.
Henshaw, Colin: The independent discovery of SN 1987 in the LMC, from Zimbabwe. Quarterly Journal of Royal Astronomical Society. 28 (4) 533-534. 1987 December. Misib2 ( talk) 06:22, 26 March 2017 (UTC)
Well! For the sake of the readers of this discussion may I ask you to summarize the date and the time of all our known independent observeries, please. Thanks in advance. Misib2 ( talk) 08:07, 26 March 2017 (UTC)
I believe the definitive record is the IAU CBAT circular from 24-February. The sequence of events and timeframes:
Note that Henshaws's observations would have been about this time (Feb 24.9), although he didn't report them; the simple geometry of earth rotation meant that Zimbabwe was in daylight when Chile and New Zealand observations were made. It's interesting that he made an independent discovery (as did Jones and probably thousands of amateur astronomers), but he doesn't get the credit discovery. Tarl N. ( discuss) 16:05, 26 March 2017 (UTC)
I don't see the mass of the progenitor listed anywhere here. This page [1] suggests it was about ~18 Solar M(o). Fig ( talk) 14:58, 17 August 2020 (UTC)
There is a good deal of discussion of the cause of the inner ring around the star, but none of the two rings overlapping one another that are not centred around the star.
What is the cause of those extra two rings? Also, there are two very bright stars and one less-bright reddish star on or nearly on the two rings. Are they coincidental near stars that merely happen to be on the path to the supernova? VictoriaWordNerd ( talk) 23:19, 18 August 2020 (UTC)
References
Does it really not have a name other than 'SN 1987A remnant'? It's a planetary nebula, right? Arlo James Barnes 09:49, 13 July 2022 (UTC)
The JWST is scheduled to observe SN 1987A for 7 1/2 hours on 2022-07-16 UTC. I don't have recent editing experience; would one of you care to add this to the article? The source is https://www.stsci.edu/files/live/sites/www/files/home/jwst/science-execution/observing-schedules/_documents/2219603f02_report_20220715.txt , which is linked to by https://www.stsci.edu/jwst/science-execution/observing-schedules — Wdfarmer ( talk) 20:51, 15 July 2022 (UTC)