干旱区生态环境知识资源中心(Arid): A volume-limited survey of mCP stars within 100 pc II: rotational and magnetic properties

Arid

DOI	10.1093/mnras/sty2895
	A volume-limited survey of mCP stars within 100 pc II: rotational and magnetic properties
	Sikora, J.1,2; Wade, G. A.2; Power, J.1,2,3; Neiner, C.4
通讯作者	Sikora, J.
来源期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
EISSN	1365-2966
出版年	2019
卷号	483 期号:3 页码:3127-3145
英文摘要	Various surveys focusing on the magnetic properties of intermediate-mass main-sequence (MS) stars have been previously carried out. One particularly puzzling outcome of these surveys is the identification of a dichotomy between the strong (greater than or similar to 100 G), organized fields hosted by magnetic chemically peculiar (mCP) stars and the ultraweak (greater than or similar to 1G) fields associated with a small number of non-mCPMS stars. Despite attempts to detect intermediate strength fields (i.e. those with strengths greater than or similar to 10 and less than or similar to 100 G), remarkably few examples have been found. Whether this so-called magnetic desert, separating the stars hosting ultraweak fields from the mCP stars truly exists has not been definitively answered. In 2007, a volume-limited spectropolarimetric survey of mCP stars using the MuSiCoS spectropolarimeter was initiated to test the existence of the magnetic desert by attempting to reduce the biases inherent in previous surveys. Since then, we have obtained a large number of ESPaDOnS and NARVAL Stokes V measurements allowing this survey to be completed. Here, we present the results of our homogeneous analysis of the rotational periods (inferred from photometric and magnetic variabilities) and magnetic properties (dipole field strengths and obliquity angles) of the 52 confirmed mCP stars located within a heliocentric distance of 100 pc. No mCP stars exhibiting field strengths less than or similar to 300G are found within the sample, which is consistent with the notion that the magnetic desert is a real property and not the result of an observational bias. Additionally, we find evidence of magnetic field decay, which confirms the results of previous studies.
英文关键词	stars: chemically peculiar stars: early-type stars: magnetic field stars: rotation
类型	Article
语种	英语
国家	Canada ; France ; USA
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000462280000018
WOS关键词	CHEMICALLY PECULIAR STARS ; UPPER-MAIN-SEQUENCE ; AP STARS ; PHOTOMETRIC VARIATIONS ; LONGITUDINAL-FIELD ; STELLAR EVOLUTION ; LIGHT VARIATIONS ; QUADRATIC FIELD ; PERIOD ; CATALOG
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217685
作者单位	1.Queens Univ, Dept Phys Engn Phys & Astron, Kingston, ON K7L 3N6, Canada; 2.Royal Mil Coll Canada, Dept Phys & Space Sci, POB 17000, Kingston, ON K7K 7B4, Canada; 3.UPMC, Univ Paris Diderot, CNRS UMR 8109, LESIA,Observ Paris, 5 Pl Jules Janssen, F-92195 Meudon, France; 4.Large Binocular Telescope Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
推荐引用方式 GB/T 7714	Sikora, J.,Wade, G. A.,Power, J.,et al. A volume-limited survey of mCP stars within 100 pc II: rotational and magnetic properties[J],2019,483(3):3127-3145.
APA	Sikora, J.,Wade, G. A.,Power, J.,&Neiner, C..(2019).A volume-limited survey of mCP stars within 100 pc II: rotational and magnetic properties.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,483(3),3127-3145.
MLA	Sikora, J.,et al."A volume-limited survey of mCP stars within 100 pc II: rotational and magnetic properties".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 483.3(2019):3127-3145.