BV R photometry of comparison stars in selected blazar fields - I. Photometric sequences for 10 BL Lacertae objects

被引:136
作者
Villata, M
Raiteri, CM
Lanteri, L
Sobrito, G
Cavallone, M
机构
[1] Osservatorio Astron Torino, I-10025 Pino Torinese, Italy
[2] Univ Turin, Ist Fis Gen, I-10125 Turin, Italy
来源
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1998年 / 130卷 / 02期
关键词
galaxies; active; BL Lacertae objects; general;
D O I
10.1051/aas:1998415
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present photometric sequences in the Johnson's BV and Cousins' R bands in the fields of 10 BL Lacertae objects (BL Lacs) monitored at the Torino Astronomical Observatory. Data were taken during 14 photometric nights from February 1995 to May 1997. The 56 calibrated stars are brighter than V = 16 and can be used as comparison objects in order to derive the BL Lac magnitudes. Finding charts are included for the stars identification.
引用
收藏
页码:305 / 310
页数:6
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