ar X iv : a st ro - p h / 98 05 25 1 v 1 1 9 M ay 1 99 8 The magnetic variability of the star HD 14437
نویسنده
چکیده
The magnetic field of the CP star HD 14437 was discovered by Glagolevskij et al. (1985) using the 6-m telescope of the Special Astrophysical Observatory. No polarity changes have been found during 2 years of observations. A very long (> 3–4 years) period of rotation was proposed to explain the measurements. To check this hypothesis, we made a new series of magnetic field observations for this star 10 years later with the 6-m telescope. The polarity of the longitudinal magnetic field is still negative and has not shown any change during more than 10 years of observations. We found the most probable periods to be several days. It means that we have observed a star where the magnetic and rotation axes are inclined at a small angle, and the negative pole is not far from the line of sight.
منابع مشابه
ar X iv : a st ro - p h / 98 05 24 3 v 1 1 9 M ay 1 99 8 ι Cas : Multi - element Doppler imaging and magnetic field geometry
In order to clarify the role of the magnetic field in generating abundance inhomogeneities in the atmospheres of Ap stars, we present new abundance Doppler images and an approximate magnetic field geometry for the Ap star ι Cas.
متن کاملar X iv : a st ro - p h / 99 05 23 3 v 1 1 8 M ay 1 99 9 Three very young HgMn stars in the Orion OB 1 Association
We report the detection of three mercury-manganese stars in the Orion OB1 association. HD 37886 and BD–0 • 984 are in the approximately 1.7 million year old Orion OB1b. HD 37492 is in the approximately 4.6 million year old Orion OB1c. Orion OB1b is now the youngest cluster with known HgMn star members. This places an observational upper limit on the time scale needed to produce the chemical pec...
متن کاملar X iv : a st ro - p h / 98 05 08 5 v 1 7 M ay 1 99 8 RCW 103 – Revisiting a cooling neutron star
Recent observations of the compact source embedded within the supernova remnant RCW 103 rekindle interest in the origin of this object’s emission. We contrast several models in which neutron-star cooling powers RCW 103. Specifically, either the presence of an accreted envelope or a sufficiently intense magnetic field can account for the X-ray emission from this object. Subject headings: stars: ...
متن کاملar X iv : a st ro - p h / 98 05 20 5 v 1 1 5 M ay 1 99 8 The double - lined spectroscopic binary α Andromedae : orbital elements and elemental abundances
We performed a spectroscopic study of the SB2 Mercury-Manganese star α And. Our measurements of the secondary’s radial velocities result in improved orbital elements. The secondary shows abundances typical of the metallic-line stars: a Ca deficiency, small overabundances of the iron-peak elements, and 1.0 dex overabundances of Sr and Ba.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998