DETECTION OF CYCLOTRON EMISSION FEATURES IN THE INFRARED-SPECTRUM OF ST LMI

被引：32

作者：

FERRARIO, L

BAILEY, J

WICKRAMASINGHE, DT

机构：

[1] UNIV LEICESTER,DEPT ASTRON,LEICESTER LE1 7RH,ENGLAND

[2] JOINT ASTRON CTR,HILO,HI 96720

[3] ANGLO AUSTRALIAN OBSERV,EPPING,NSW 2121,AUSTRALIA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1993年 / 262卷 / 02期

关键词：

RADIATION MECHANISMS; MISCELLANEOUS; BINARIES; CLOSE; STARS; INDIVIDUAL; ST LMI; MAGNETIC FIELDS; NOVAE; CATACLYSMIC VARIABLES; WHITE DWARFS;

D O I：

10.1093/mnras/262.2.285

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present near-infrared spectroscopic observations of the AM Herculis system ST LMi over the wavelength range 1.0-2.5 mum. During the bright phase of the binary cycle, broad and resolvable cyclotron emission harmonics are visible near 1.42, 1.65 and 2.0 mum. We have interpreted the features in terms of an arc-shaped cyclotron emission region consisting of a high-density, high-temperature spot with an extended leading edge of cooler and lower density material. The accretion arc is located close to the weaker pole of magnetic field strength almost-equal-to 12 MG.

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页码：285 / 288

页数：4

相关论文

共 17 条

[1] AN OPTICAL AND NEAR-INFRARED STUDY OF THE AM HERCULIS-TYPE BINARY CW 1103+254 [J].

BAILEY, J ;

WATTS, DJ ;

SHERRINGTON, MR ;

AXON, DJ ;

GILES, AB ;

HANES, DA ;

HEATHCOTE, SR ;

HOUGH, JH ;

HUGHES, S ;

JAMESON, RF ;

MCLEAN, I .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1985, 215 (02) :179-196

[2] CYCLOTRON FEATURES IN THE INFRARED-SPECTRUM OF AM HERCULIS [J].

BAILEY, J ;

FERRARIO, L ;

WICKRAMASINGHE, DT .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 251 (02) :P37-P40

[3]

BEUERMANN K, 1988, ASTRON ASTROPHYS, V195, pL15

[4] POLARIMETRY OF ST-LMI (CW1103+254) [J].

CROPPER, M .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1986, 222 (04) :853-870

[5] THE MAGNETIC-FIELD IN 4 AM-HER SYSTEMS - MEASUREMENTS FROM CYCLOTRON HUMPS [J].

CROPPER, M ;

MASON, KO ;

ALLINGTONSMITH, JR ;

BRANDUARDIRAYMONT, G ;

CHARLES, PA ;

MITTAZ, JPD ;

MUKAI, K ;

MURDIN, PG ;

SMALE, AP .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1989, 236 (02) :P29-P38

[6]

CROPPER M, 1993, UNPUB MNRAS

[7] EXO-033319-2554.2 - AN ECLIPSING AM HERCULIS SYSTEM SHOWING CYCLOTRON EMISSION FEATURES [J].

FERRARIO, L ;

WICKRAMASINGHE, DT ;

BAILEY, J ;

TUOHY, IR ;

HOUGH, JH .

ASTROPHYSICAL JOURNAL, 1989, 337 (02) :832-842

[8] DETECTION OF PHOTOSPHERIC ZEEMAN FEATURES AND CYCLOTRON EMISSION-LINES IN V834 CEN IN A LOW STATE [J].

FERRARIO, L ;

WICKRAMASINGHE, DT ;

BAILEY, J ;

HOUGH, JH ;

TUOHY, IR .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 256 (02) :252-260

[9] ARC-SHAPED CYCLOTRON EMISSION REGIONS IN AM HERCULIS SYSTEMS [J].

FERRARIO, L ;

WICKRAMASINGHE, DT .

ASTROPHYSICAL JOURNAL, 1990, 357 (02) :582-590

[10] AN OPTIMAL EXTRACTION ALGORITHM FOR CCD SPECTROSCOPY [J].

HORNE, K .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1986, 98 (604) :609-617