1998A&A...329..579F


Query : 1998A&A...329..579F

1998A&A...329..579F - Astronomy and Astrophysics, volume 329, 579-582 (1998/1-2)

uvby photometry of θ Coronae Borealis during 1994 and 1995.

FABREGAT J. and ADELMAN S.J.

Abstract (from CDS):

We present differential uvby photometry of θ CrB obtained in 1994 and 1995, complemented by Balmer line spectroscopy. This star has been constant during this period, showing no short term periodic variability with an amplitude greater than 0.005mag., nor long term variations greater than 0.01mag. The lack of variability is associated with an inactive phase of the Be star, in which no emision features are present in the spectra. The only remarkable event observed was a fading episode on JD 2449779, with an amplitude of about 0.02 magnitudes in all bandpasses and duration of 0.2-0.3 days.

Abstract Copyright:

Journal keyword(s): stars: emission-line, Be - stars: individual: θ CrB

VizieR on-line data: <Available at CDS (J/A+A/329/579): table2aa.dat table2ab.dat table2b.dat>

Simbad objects: 9

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Number of rows : 9
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 LS I +61 303 HXB 02 40 31.6644419688 +61 13 45.593918580 11.27 11.61 10.75 10.19 9.55 B0Ve 800 2
2 V* X Per HXB 03 55 23.0777456088 +31 02 45.039836148 6.090 6.840 6.720     O9.5III 934 0
3 * 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
4 * kap CMa Be* 06 49 50.4593263 -32 30 30.522482 2.73 3.68 3.89 3.91 4.05 B1.5Ve 277 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
6 * chi Boo PM* 15 14 29.1587474040 +29 09 51.466943700   5.326 5.272     A2V 86 0
7 * 50 Boo PM* 15 21 48.5751139296 +32 56 01.298173056   5.312 5.372     B9Vn 75 0
8 * tet CrB Be* 15 32 55.78214 +31 21 32.8762 3.45 4.00 4.13 4.18 4.29 B6Vnne 282 0
9 * eps Cap Be* 21 37 04.8306787 -19 27 57.646354 3.69 4.35 4.55 4.60 4.74 B3V 247 0

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2022.05.22-22:48:24

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