1999A&A...350..485O


Query : 1999A&A...350..485O

1999A&A...350..485O - Astronomy and Astrophysics, volume 350, 485-490 (1999/10-2)

Time-resolved spectroscopy of the peculiar Hα variable Be star HD 76534.

OUDMAIJER R.D. and DREW J.E.

Abstract (from CDS):

We present time-resolved spectroscopy of the Be star HD 76534, which was observed to have an Hα outburst in 1995, when the line went from photospheric absorption to emission at a level of more than two times the continuum within 2.5 hours. To investigate the short-term behaviour of the spectrum of HD 76534 we have obtained 30 spectra within two hours real-time and searched for variations in the spectrum. Within the levels of statistical significance, no variability was found. Rather than periodic on short time scales, the Hα behaviour seems to be commonly episodic on longer (>1 year) time scales, as an assessment of the existing data on the Hα line and the Hipparcos photometry suggests. HD 76534 underwent only 1 photometric outburst in the 3 year span that the star was monitored by the Hipparcos satellite.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: circumstellar matter - stars: emission-line, Be - stars: individual: HD 76534 - stars: mass-loss - stars: variables: general

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * lam Eri Be* 05 09 08.7831482 -08 45 14.690823 3.17 4.07 4.27 4.35 4.55 B2III(e)p 293 1
2 * bet CMa bC* 06 22 41.9853527 -17 57 21.307352 0.77 1.73 1.97 2.11 2.35 B1II-III 699 0
3 HD 56126 pA* 07 16 10.2590823192 +09 59 47.954735376   9.20 8.32     F0/5Ia 310 0
4 HD 76534 Be* 08 55 08.70673 -43 27 59.8852 7.04 7.62 7.50 8.94   B2Vn 120 0
5 * mu. Cen Be* 13 49 36.9886294 -42 28 25.429594 2.37 3.27 3.43 3.41 3.50 B2Vnpe 421 0

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2022.05.19-19:59:45

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