·· Estrellas Variables / Fotometría

[Albert]

Betelgeuse incrementa su brillo...! se recomienda medidas visuales con prismaticos,
y CCD desenfocando por el alto brillo de la Estrella
suerte !!
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The Brightening of the Red Supergiant alpha Ori

ATel #9503; R. P. Wasatonic and E. F. Guinan (Villanova University)
on 18 Sep 2016; 19:08 UT

Subjects: Optical, Request for Observations, Star, Variables

We have been carrying out V-band and Wing TiO-band and Near-IR photoelectric photometry of the semi-regular variable red supergiant alpha Ori (Betelgeuse) over last 20 yrs. Photometry obtained during early to mid September 2016 indicates that the star is at (or near) maximum light at = +0.29 mag. Measures of TiO-band and near-IR colors indicate that alpha Ori has undergone a temperature increase of about +120 K and has an estimated spectral type of M0.5 Iab. Because alpha Ori is one of the nearest Type II SN progenitors, it an important star to monitor. This would be an opportune time to secure spectroscopy, polarization, interferometry, and radio observations of the star while near maximum brightness.

   

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[Rober - Cielos Boreales]

Esta mañana veía por Twitter este aviso, entiendo que se está solicitando ayuda o colaboración pro-am:

We have been carrying out V-band and Wing TiO-band and Near-IR photoelectric photometry of the semi-regular variable red supergiant alpha Ori (Betelgeuse) over last 20 yrs. Photometry obtained during early to mid September 2016 indicates that the star is at (or near) maximum light at = +0.29 mag. Measures of TiO-band and near-IR colors indicate that alpha Ori has undergone a temperature increase of about +120 K and has an estimated spectral type of M0.5 Iab. Because alpha Ori is one of the nearest Type II SN progenitors, it an important star to monitor. This would be an opportune time to secure spectroscopy, polarization, interferometry, and radio observations of the star while near maximum brightness.

https://www.astronomerstelegram.org/?read=9503

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[Ojito!!!]

Incremento de brillo y temperatura de Betelgeuse.

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[transneptuniano]

Hola!

Pues sí, creo que hay una buena oportunidad de colaboración, especialmente para colegas que tengan equipamiento para espectroscopía. Dado el brillo de la estrella, es relativamente fácil sacarle un espectro. Hasta yo mismo igual me animo en cuanto tenga la rejilla de difracción montada en la rueda portafiltros. Otra cosa será la utilidad que tenga el resultado en mi caso pero por otro lado, me consta que hay por estos foros compañeros que pueden sacarle mucho jugo al tema.

Saludos

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[Rober - Cielos Boreales]

Ops, siento haber duplicado hilo.   

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