MILLIMETER POLARIMETRY OF STAR-FORMING REGIONS - MAGNETIC-FIELD STRUCTURE AROUND LOW-MASS STARS

被引:0
作者
TAMURA, M [1 ]
HAYASHI, S [1 ]
HOUGH, JH [1 ]
机构
[1] UNIV HERTFORDSHIRE,HATFIELD,HERTS,ENGLAND
关键词
INFRARED; INTERSTELLAR; CONTINUUM; POLARIZATION; STARS; FORMATION;
D O I
10.1007/BF00667815
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have measured polarization of the 1.1 mm and 0.8 mm continuum emission for 3 pre-T Tauri stars and 2 T Tauri stars. Positive detections were made for NGC 1333 IRAS 4 and IRAS 16293-2422, while L1551 IRS 5 and HL Tau were only marginally detected. For GG Tau we measured a 2 sigma upper limit of 3%. The polarization is interpreted in terms of thermal emission by magnetically aligned dust grains in circumstellar disks or envelopes. We have found a definite geometrical relation between the polarization and other circumstellar structure.
引用
收藏
页码:21 / 24
页数:4
相关论文
共 10 条
[1]  
Bastien P., 1982, Astronomy & Astrophysics Supplement Series, V48, P153
[2]   A SURVEY FOR CIRCUMSTELLAR DISKS AROUND YOUNG STELLAR OBJECTS [J].
BECKWITH, SVW ;
SARGENT, AI ;
CHINI, RS ;
GUSTEN, R .
ASTRONOMICAL JOURNAL, 1990, 99 (03) :924-945
[3]   FORBIDDEN LINE AND H-ALPHA PROFILES IN T-TAURI STAR SPECTRA - A PROBE OF ANISOTROPIC MASS OUTFLOWS AND CIRCUMSTELLAR DISKS [J].
EDWARDS, S ;
CABRIT, S ;
STROM, SE ;
HEYER, I ;
STROM, KM ;
ANDERSON, E .
ASTROPHYSICAL JOURNAL, 1987, 321 (01) :473-495
[4]   1ST RESULTS FROM A SUBMILLIMETER POLARIMETER ON THE MAXWELL,JAMES,CLERK TELESCOPE [J].
FLETT, AM ;
MURRAY, AG .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 249 (01) :P4-P6
[5]  
HILDEBRAND RH, 1988, Q J ROY ASTRON SOC, V29, P327
[6]  
KANE BD, 1993, ASTROPHYS J, V708, P411
[7]   SMALL-SCALE STRUCTURE OF THE CIRCUMSTELLAR GAS AROUND L1551 IRS-5 [J].
SARGENT, AI ;
BECKWITH, S ;
KEENE, J ;
MASSON, C .
ASTROPHYSICAL JOURNAL, 1988, 333 (02) :936-942
[8]   CIRCUMSTELLAR MATERIAL ASSOCIATED WITH SOLAR-TYPE PRE-MAIN-SEQUENCE STARS - A POSSIBLE CONSTRAINT ON THE TIMESCALE FOR PLANET BUILDING [J].
STROM, KM ;
STROM, SE ;
EDWARDS, S ;
CABRIT, S ;
SKRUTSKIE, MF .
ASTRONOMICAL JOURNAL, 1989, 97 (05) :1451-1470
[9]   MAGNETIC-FIELD IN A LOW-MASS PROTOSTAR DISK - MILLIMETER POLARIMETRY OF IRAS 16293-2422 [J].
TAMURA, M ;
HAYASHI, SS ;
YAMASHITA, T ;
DUNCAN, WD ;
HOUGH, JH .
ASTROPHYSICAL JOURNAL, 1993, 404 (01) :L21-L24
[10]  
TAMURA M, 1989, ASTROPHYS J, V93, P1368