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DEG01 - SiO Maser Survey of Southern IRAS Sources

Interferometry data

Short title: Deguchi et al. (2001)
Authors: Deguchi, Shuji Nakashima, Jun-Ichi Balasubramanyam, Ramesh
Journal: Publications of the Astronomical Society of Japan, vol.53, no. 2, p. 305-314.
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Abstract
We have surveyed 163 southern IRAS sources in the SiO J = 2 - 1 v = 1 maser line at 86 GHz, obtaining 38 (22 new and 16 previously known) detections. These detections include 6 stars not previously detected in OH 1612 MHz surveys, and 4 sources assigned incorrect OH radial velocities. The distance reachable in this survey turned out to be about 4 kpc. The local velocity dispersion near the Sun were found to be approximately 30 km s^-1 for these IRAS/SiO sources. A relatively high concentration of the SiO detected sources were found at the area 320� < l < 340� (toward Norma tangent). The estimated distances for these sources suggest that this concentration is spread between 2 and 6 kpc from the Sun, peaking on the Scutum-Crux arm.	Target sources: IRAS

Abstract

We have surveyed 163 southern IRAS sources in the SiO J = 2 - 1 v = 1 maser line at 86 GHz, obtaining 38 (22 new and 16 previously known) detections. These detections include 6 stars not previously detected in OH 1612 MHz surveys, and 4 sources assigned incorrect OH radial velocities. The distance reachable in this survey turned out to be about 4 kpc. The local velocity dispersion near the Sun were found to be approximately 30 km s^-1 for these IRAS/SiO sources. A relatively high concentration of the SiO detected sources were found at the area 320� < l < 340� (toward Norma tangent). The estimated distances for these sources suggest that this concentration is spread between 2 and 6 kpc from the Sun, peaking on the Scutum-Crux arm.

Target sources:
IRAS

Input tables: Table 1 and 2
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Detection table from Deguchi et al. (2001)

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Non-detection table from Deguchi et al. (2001)