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NAK03B - SiO Maser Survey of Cold IRAS Sources

Interferometry data

Short title: Nakashima & Deguchi (2003B)
Authors: Nakashima, Jun-Ichi Deguchi, Shuji
Journal: Publications of the Astronomical Society of Japan, Vol.55, No.1, pp.229-246
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Detection table: Show detection table (102 detection) Non-detection table: Show non-detection table (184 non-detection)

Abstract
We present the results of observations of cold IRAS sources in the Galactic disk area, -10 < l < 100 and b < 5, in the SiO J = 1 -- 0, v = 1 and 2 maser lines. SiO masers were detected in 51 out of 143 observed sources 45 were new detections in SiO masers. The selected IRAS sources were objects with dust temperatures of between 160 and 280K. According to a confirmation using 2MASS near-infrared images, a majority of the sample are AGB or post-AGB stars, although dense cores in the star-forming regions (or dusty H II regions) are involved in part of the sample. Among new detections, two were candidates for post-AGB stars: IRAS 18450 - 0148 (W43A), and 19312 + 1950. We found that the intensity ratios of the SiO J = 1 -- 0, v = 2 to the v = 1 line of the objects clearly correlate with those IRAS colors. The detection rates of SiO masers tend to increase toward the Galactic center as we ll as the cases of previous SiO maser surveys of typical AGB stars. No strong associations of the objects to the spiral arms were found. The radial-velocity dispersion of the present sample is comparable with the dispersion of the SiO maser sample of typical AGB stars. These facts suggest that the present sample of cold IRAS sources with SiO masers has a kinematic property very similar to that of typical AGB stars. eprintid: arXiv:astro-ph/0301372

Abstract

We present the results of observations of cold IRAS sources in the Galactic disk area, -10 < l < 100 and b < 5, in the SiO J = 1 -- 0, v = 1 and 2 maser lines. SiO masers were detected in 51 out of 143 observed sources 45 were new detections in SiO masers. The selected IRAS sources were objects with dust temperatures of between 160 and 280K. According to a confirmation using 2MASS near-infrared images, a majority of the sample are AGB or post-AGB stars, although dense cores in the star-forming regions (or dusty H II regions) are involved in part of the sample. Among new detections, two were candidates for post-AGB stars: IRAS 18450 - 0148 (W43A), and 19312 + 1950. We found that the intensity ratios of the SiO J = 1 -- 0, v = 2 to the v = 1 line of the objects clearly correlate with those IRAS colors. The detection rates of SiO masers tend to increase toward the Galactic center as we ll as the cases of previous SiO maser surveys of typical AGB stars. No strong associations of the objects to the spiral arms were found. The radial-velocity dispersion of the present sample is comparable with the dispersion of the SiO maser sample of typical AGB stars. These facts suggest that the present sample of cold IRAS sources with SiO masers has a kinematic property very similar to that of typical AGB stars. eprintid: arXiv:astro-ph/0301372

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Distribution of sources in all sky (l,b)

Distribution of sources in all sky using Aladin

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Distribution of sources in IRAS color-color diagram

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Original color diagram is taken form van der Veen & Habing (1987)

Type	Description
I	Oxygen-rich non-variable stars without circumstellar shells
II	Variable stars with "young" O-rich circumstellar shells
IIIa	Variable stars with more evolved O-rich circumstellar shells
IIIb	Variable stars with thick O-rich circumstellar shells
IV	Variable stars with very thick O-rich circumstellar shells
V	Planetary nebulae and non- variable stars with very cool circumstellar shells
VIa	Variable stars with relatively cold dust at large distances; a significant part of the stars is carbon-rich
VIb	Variable stars with relatively hot dust close to the star and relatively cold dust at large distances; Some of the objects have proven to be O-rich
VII	Variable stars with more evolved C-rich circumstellar shells
VIII	Different sort of objects

Distribution of the detection velocities versus galactic longitude from NAK03B

Tip: Use "Box select" or "Lasso select" to display velocity-selected sources in Aladin all-sky view

Tip: Click on some source to look at the different surveys. You must select some surveys in previous page at "View images"

Longitude-Velocity Map is taken form Dame, Hartmann & Thaddeus (2001)

Distribution of sources from NAK03B in (l,b) histograms

DSS colored	2MASS colored	WISE colored
SDSS color	IRAC color I1,I2,I4	GLIMPSE 360
PACS color (70-160 um)	SPIRE color (250-500 um)	NVSS (1.4GHz)
ATLASGAL 870 um	ATLASGAL 870 um + Planck	Bolocam 1.1 mm
UKIDSS K	2MASS K

select MAX(sio_data_all.ra_hms) as ra_hms,MAX(sio_data_all.dec_dms) as dec_dms,MAX(sio_data_all.source_name) as source_name,MAX(sio_data_all.ra) as ra,MAX(sio_data_all.dec) as dec,MAX(sio_data_all.l) as l,MAX(sio_data_all.b) as b,MAX(sio_data_all.grp) as grp,MAX(sio_data_all.other_name) as other_name,MAX(sio_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(sio_data_all.line) as line,MAX(sio_data_all.vrange) as vrange,MAX(sio_data_all.vpeak) as vpeak,MAX(sio_data_all.peak) as peak,MAX(sio_data_all.fwhm) as fwhm,MAX(sio_data_all.int) as int,MAX(sio_data_all.rms) as rms,MAX(sio_data_all.units) as units,MAX(sio_data_all.units_rms) as units_rms,MAX(sio_data_all.date_txt) as date_txt,MAX(sio_data_all.telescope_ref) as telescope_ref,MAX(sio_data_all.beam) as beam,MAX(sio_data_all.beam_maj) as beam_maj,MAX(sio_data_all.beam_min) as beam_min,MAX(sio_data_all.beam_pa) as beam_pa,MAX(sio_data_all.ref) as ref,MAX(sio_data_all.list_ref) as list_ref,MAX(sio_data_all.ascii) as ascii,MAX(sio_data_all.image) as image,MAX(sio_data_all.descr) as descr,MAX(sio_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(sio_data_all.dist) as dist,MAX(sio_data_all.date_txt) as date_txt,MAX(line_det) as line_det FROM sio_data_all  LEFT JOIN all_objects_withmet ON sio_data_all.grp=all_objects_withmet.group_name  WHERE ref ilike 'NAK03B' AND detected=true AND hide=false GROUP BY ref

select sio_data_all.ra_hms,sio_data_all.dec_dms,sio_data_all.source_name,sio_data_all.ra,sio_data_all.dec,sio_data_all.l,sio_data_all.b,sio_data_all.grp,sio_data_all.other_name,sio_data_all.other_desc,sio_data_all.thermal,sio_data_all.line,sio_data_all.vrange,sio_data_all.vpeak,sio_data_all.peak,sio_data_all.fwhm,sio_data_all.int,sio_data_all.rms,sio_data_all.units,sio_data_all.units_rms,sio_data_all.date_txt,sio_data_all.telescope_ref,sio_data_all.beam,sio_data_all.beam_maj,sio_data_all.beam_min,sio_data_all.beam_pa,sio_data_all.ref,sio_data_all.list_ref,sio_data_all.ascii,sio_data_all.image,sio_data_all.descr,sio_data_all.id,sio_data_all.mjy_flag,sio_data_all.rms_mjy_flag,sio_data_all.dist,sio_data_all.date_txt,line_det FROM sio_data_all   LEFT JOIN all_objects_withmet ON sio_data_all.grp=all_objects_withmet.group_name  WHERE ref ilike 'NAK03B' AND detected=true AND hide=false ORDER BY detected DESC,id