Time resolved spectroscopy of the post-AGB star HD56126

Details Time resolved spectroscopy of the post-AGB star HD56126 Time resolved spectroscopy of the post-AGB star HD56126

1995-10-23

arxiv.org/abs/astro-ph/9510121v1

Astronomy and Astrophysics

Astrophysics

6 pages plain latex includes 4 encapsulated poscript files, uses psfig.sty and mn.sty; 1994, Monthly Notices of the Royal Astr

Scientific paper

We have investigated the report of Tamura and Takeuti that the Halpha line of the F-type post-AGB star HD56126 is variable on time scales of minutes. To this end, HD56126 was observed on two occasions with the William Herschel Telescope. Seventeen, respectively thirty spectra were taken within time span of 1.5 hours in order to detect any short term variations. We find that the Halpha line profile changed strongly over the two month interval, but no evidence is found for short term variability. The variability Tamura and Takeuti claim to find is probably due to the low signal-to-noise in their spectra.

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