A search for H2O maser emission toward active galactic nuclei: Discovery of a nuclear maser source in NGC 3735

被引：36

作者：

Greenhill, LJ ^{[1
]}

Herrnstein, JR ^{[1
]}

Moran, JM ^{[1
]}

Menten, KM ^{[1
]}

Velusamy, T ^{[1
]}

机构：

[1] CALTECH,JET PROP LAB,PASADENA,CA 91109

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 486卷 / 01期

关键词：

galaxies; active; individual; (NGC; 3735); nuclei; masers;

D O I：

10.1086/310824

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the results of a survey for H2O maser emission in the 6(16)-5(23) transition at 1.35 cm wavelength in 29 active galactic nuclei (AGNs). One new maser was detected. The detection rate among objects with recessional velocities <7000 km s(-1) is consistent with rates reported elsewhere for similarly nearby objects (about one in 15). The new maser lies in the edge-on Seyfert 2 galaxy NGC 3735 (inclination 77 degrees) within 10 km s(-1) of the systemic velocity. No other emission has been identified at velocities within +/-500 km s(-1) of the systemic velocity. The maser is coincident with the radio continuum peak of the nucleus at 6 and 3.6 cm wavelengths to within the estimated 1 sigma astrometric uncertainty of 0''.1 (15 pc at a distance of 30 Mpc).

引用

页码：L15 / L18

页数：4

共 26 条

[1]

BAAN WA, 1994, APJ, V437, pL35

[2]

BRAATZ J, 1996, BAAS, V28, P1392

[3] A survey for H2O megamasers in active galactic nuclei .2. A comparison of detected and undetected galaxies [J].