SiO maser survey of AGB stars in the North Galactic Cap

Y. Ita; S. Deguchi; T. Fujii; O. Kameya; M. Miyoshi; Y. Nakada; J. Nakashima; M. Parthasarathy

doi:10.1051/0004-6361:20010818

SiO maser survey of AGB stars in the North Galactic Cap

Y. Ita, S. Deguchi, T. Fujii, O. Kameya, M. Miyoshi, Y. Nakada, J. Nakashima, M. Parthasarathy

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

A SiO maser survey in the J = 1-0, v = 1 and 2 transitions has been made for IRAS sources in the North Galactic Cap (b > 30°) with the Nobeyama 45 m radio telescope. The sources were selected on the basis of their IRAS 12/25-μm and 25/60-μm flux ratios as likely oxygen-rich AGB candidates. SiO masers were detected from 24 out of the 97 selected sources, where 17 were new detections. The distances and heights above the Galactic plane are calculated. The Galactic distribution of detected and undetected stars indicates that metallicity is likely to govern the detection rate. The Galactocentric angular velocities of the subsampled stars are derived and their variation with the Galactic height is discussed.

Original language	English
Pages (from-to)	112-123
Number of pages	12
Journal	Astronomy and Astrophysics
Volume	376
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361:20010818
Publication status	Published - 2001
Externally published	Yes

Keywords

Galactic kinematics and structure
Late-type star
Radio lines

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361:20010818

Cite this

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title = "SiO maser survey of AGB stars in the North Galactic Cap",

abstract = "A SiO maser survey in the J = 1-0, v = 1 and 2 transitions has been made for IRAS sources in the North Galactic Cap (b > 30°) with the Nobeyama 45 m radio telescope. The sources were selected on the basis of their IRAS 12/25-μm and 25/60-μm flux ratios as likely oxygen-rich AGB candidates. SiO masers were detected from 24 out of the 97 selected sources, where 17 were new detections. The distances and heights above the Galactic plane are calculated. The Galactic distribution of detected and undetected stars indicates that metallicity is likely to govern the detection rate. The Galactocentric angular velocities of the subsampled stars are derived and their variation with the Galactic height is discussed.",

keywords = "Galactic kinematics and structure, Late-type star, Radio lines",

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doi = "10.1051/0004-6361:20010818",

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T1 - SiO maser survey of AGB stars in the North Galactic Cap

AU - Ita, Y.

AU - Deguchi, S.

AU - Fujii, T.

AU - Kameya, O.

AU - Miyoshi, M.

AU - Nakada, Y.

AU - Nakashima, J.

AU - Parthasarathy, M.

PY - 2001

Y1 - 2001

N2 - A SiO maser survey in the J = 1-0, v = 1 and 2 transitions has been made for IRAS sources in the North Galactic Cap (b > 30°) with the Nobeyama 45 m radio telescope. The sources were selected on the basis of their IRAS 12/25-μm and 25/60-μm flux ratios as likely oxygen-rich AGB candidates. SiO masers were detected from 24 out of the 97 selected sources, where 17 were new detections. The distances and heights above the Galactic plane are calculated. The Galactic distribution of detected and undetected stars indicates that metallicity is likely to govern the detection rate. The Galactocentric angular velocities of the subsampled stars are derived and their variation with the Galactic height is discussed.

AB - A SiO maser survey in the J = 1-0, v = 1 and 2 transitions has been made for IRAS sources in the North Galactic Cap (b > 30°) with the Nobeyama 45 m radio telescope. The sources were selected on the basis of their IRAS 12/25-μm and 25/60-μm flux ratios as likely oxygen-rich AGB candidates. SiO masers were detected from 24 out of the 97 selected sources, where 17 were new detections. The distances and heights above the Galactic plane are calculated. The Galactic distribution of detected and undetected stars indicates that metallicity is likely to govern the detection rate. The Galactocentric angular velocities of the subsampled stars are derived and their variation with the Galactic height is discussed.

KW - Galactic kinematics and structure

KW - Late-type star

KW - Radio lines

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DO - 10.1051/0004-6361:20010818

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SiO maser survey of AGB stars in the North Galactic Cap

Abstract

Keywords

ASJC Scopus subject areas

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