The prototype LBV AG Carinae

 

AG Carinae (HD 94910, RA=10:56:11.6, DEC=-60:27:12.8), one of the brightest, most famous, and most variable LBVs, is considered one of the prototypes of this class of stars.


Luminous Blue Variables

LBVs are characterized as high-luminosity, blue (i.e. hot) massive stars showing photometric and spectroscopic variability on a range of timescales from days to decades.



LBVs as fast rotators

In Groh et al. (2006) we presented quantitative evidence that AG Car had a high rotational velocity during the minimum phase of 2000–2003 and, for the first time, we showed that LBVs can be fast rotators.  You can download the article in the Publications section of this site.



Analysis of visual minimum epochs and changes in the bolometric luminosity during the S-Dor cycle

Our paper discussing the visual minimum phases of AG Car has been published in ApJ! You can read more about that and download the article in the Publications section of this site.

Credit: Stephen White (UMd)