2003A&A...403..205A


Query : 2003A&A...403..205A

2003A&A...403..205A - Astronomy and Astrophysics, volume 403, 205-215 (2003/5-3)

Starspots and active regions on the chromospherically active binary MS Ser.

ALEKSEEV I.Y. and KOZLOVA O.V.

Abstract (from CDS):

The quasisimultaneous electrophotometric, polarimetric and spectroscopic observations of the chromospherically active binary MS Ser are presented. The photometric variability of the star can be described completely by a zonal spottedness model. Spotted regions occupy up to 21% of the total stellar surface. The temperature difference between the unspotted photosphere and starspots is about 1300K. Starspots are localized at the middle latitudes. We detected the broad-band linear polarization of the stellar light and its rotational modulation connected with the local magnetic region on the stellar surface. We suspect that there is a space connection between plages, magnetic regions and the mostly spotted stellar longitudes.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: chromospheres - stars: magnetic fields - stars: starspots

CDS comments: star c2 = BD +26 2623.

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 131847 * 14 55 09.4658863344 +25 34 35.097288168   9.37 8.94     F5 8 0
2 HD 143272 * 15 58 34.9132129968 +26 32 35.043138672   9.18 8.14     K0II-III 9 0
3 V* MS Ser BY* 15 58 43.9452509832 +25 34 10.427623284   9.21 8.347   7.201 G/K:e 101 0

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2023.01.31-07:41:45

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