KINEMATICS OF ATOMIC GAS HALOS IN EDGE-ON SPIRALS

被引:0
|
作者
Rand, R. J. [1 ]
Benjamin, R. A. [2 ]
Dahlem, M. [3 ]
机构
[1] Univ New Mexico, Dept Phys & Astron, 800 Yale Blvd NE, Albuquerque, NM 87131 USA
[2] Univ Wisconsin Whitewater, Dept Phys, Whitewater, WI 53190 USA
[3] CSIRO, ATNF, Narrabri, NSW 2390, Australia
关键词
DIFFUSE IONIZED-GAS; FIELD UNIT OBSERVATIONS; GALAXIES; NGC-891; MODEL;
D O I
10.1051/eas/1256040
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present new constraints on lagging atomic halos in the edge-ons NGC 4244 and NGC 4565 from recent WSRT data. In NGC 4244, any possible lag is limited to <10km s(-1) kpc(-1) up to z = 2 kpc, while NGC 4565 may have a lag of similar to 10 km s(-1) kpc(-1), up to z = 2 kpc, but only at about R <= 3'. These small lags in galaxies with little star formation may disagree with recently reported trends for extraplanar ionized gas in three edge-ons.
引用
收藏
页码:247 / +
页数:2
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