J-Net galactic-plane survey of VLBI radio sources for VLBI Exploration of Radio Astrometry (VERA)

被引：20

作者：

Honma, M ^{[1
]}

Oyama, T

Hachisuka, K

Sawada-Satoh, S

Sebata, K

Miyoshi, M

Kameya, O

Manabe, S

Kawaguchi, N

Sasao, T

Kameno, S

Fujisawa, K

Shibata, KM

Bushimata, T

Miyaji, T

Kobayashi, H

Inoue, M

Imai, H

Araki, H

Hanada, H

Iwadate, K

Kaneko, Y

Kuji, S

Sato, K

Tsuruta, S

Sakai, S

Tamura, Y

Horiai, K

Hara, T

Yokoyama, K

Nakajima, J

Kawai, E

Okubo, H

Osaki, H

Koyama, Y

Sekido, M

Suzuyama, T

Ichikawa, R

Kondo, T

Sakai, K

Wada, K

Harada, N

Tougou, N

Fujishita, M

Shimizu, R

Kawaguchi, S

Yoshimura, A

Nakamura, M

Hasegawa, W

Morisaki, S

机构：

[1] NAOJ, VERA Project Off, Mitaka, Tokyo 1818588, Japan

[2] NAOJ, Mizusawa Astrogeodynam Observ, Mizusawa 0230861, Japan

[3] Univ Tokyo, Dept Astron, Tokyo 1138654, Japan

[4] NAOJ, Earth Rotat Div, Mizusawa 0230861, Japan

[5] Grad Univ Adv Studies, Kanagawa 24001, Japan

[6] NAOJ, VSOP Project, Tokyo 1818588, Japan

[7] NAOJ, Nobeyama Radio Observ, Minamisa Ku, Nagano 3841305, Japan

[8] Kashima Space Res Ctr, Commun Res Lab, Kashima, Ibaraki 3140012, Japan

[9] Commun Res Labs, Tokyo 1848795, Japan

[10] Kyushu Tokai Univ, Sch Engn, Kumamoto 8628652, Japan

[11] Kagoshima Univ, Fac Sci, Kagoshima 8900065, Japan

[12] Int Univ Kagoshima, Kagoshima 8910191, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2000年 / 52卷 / 04期

关键词：

galaxies : active; quasars : general; radio continuum : galaxies; radio continuum : stars; VERA;

D O I：

10.1093/pasj/52.4.631

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In order to search for new VLBI sources in the galactic plane that can be used as phase reference sources in differential VLBI, we conducted 22 GHz observations of radio sources in the galactic plane using the Japanese VLBI Network (J-Net). We have observed 267 VLBI source candidates selected from existing radio surveys and have detected 93 sources at a signal-to-noise ratio larger than 5. While 42 of the 93 detected sources had already been detected with VLBI at relatively lower frequency (typically 2 to 8 GHz), the remaining 51 are found to be new VLBI sources detected for the first time. These are located within /b/ less than or equal to 5 degrees, and have a large number of galactic maser sources around them. Thus, they are potential candidates for phase reference sources for VLBI Exploration of Radio Astrometry (VERA), which is the first VLBI array dedicated to phase-referencing VLBI astrometry aimed at measuring the parallax and proper motion of maser sources in the whole Galaxy.

引用

页码：631 / 643

页数：13

共 20 条

[1] A NEW CATALOG OF 53,522 4.85 GHZ SOURCES [J].