[HN Gopher] Betelgeuse Remains Steadfast in the Infrared ___________________________________________________________________ Betelgeuse Remains Steadfast in the Infrared Author : fhars Score : 17 points Date : 2020-02-26 21:57 UTC (1 hours ago) (HTM) web link (www.astronomerstelegram.org) (TXT) w3m dump (www.astronomerstelegram.org) | macintux wrote: | Just fascinating. I spent some time goggling at its absence this | weekend, glad to hear it should(?) return to prominence | petschge wrote: | Have a look at the plot [1] from the excellent plotting tool [2] | of the American Association of Variable star observers [3]. You | see a strong dip in the U band (U for UV, 365 nm plus or minus 66 | nm), B band (B for blue, 445 nm \pm 94 nm) and V band (V for | visible, 551 nm \pm 88 nm). But in infrared (only the J band had | enough data to make it worth plotting) at 1.22 micro (plus or | minus 212 nm) the light curve is really flat. | | 1: https://imagebin.ca/v/5DhzHxxS3Eq2 2: | https://www.aavso.org/LCGv2/ 3: https://aavso.org/ | geuis wrote: | This supports recent hypotheses in the last couple weeks that the | dimming is from expelled dust. | https://arstechnica.com/science/2020/02/new-image-shows-bete... | Jun8 wrote: | From the abstract: | | "This suggests that the recent dramatic fading observed at visual | wavelengths is due mostly to local surface phenomena, such as | changes in dust extinction or molecular opacity along the line of | sight through the inner wind and complex atmosphere, and/or | surface temperature fluctuations." | shadykiller wrote: | Does that mean it's not exploding ? | | Super disappointing. Is there still hope to see the supernova | in our lifetime ? | ProAm wrote: | There's always hope. | jlmorton wrote: | "Thus, while Betelgeuse may explode tomorrow or any time in | the next few 1e5 yr, the unprecedented current visual | faintness is unlikely to be a harbinger of its impending core | collapse." | [deleted] | chaoticmass wrote: | Of course there is hope. Lots of stars out there. ___________________________________________________________________ (page generated 2020-02-26 23:00 UTC)