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NGU88 - A sensitive line search in circumstellar envelopes

Interferometry data

Short title: Nguyen-Quang-Rieu et al. (1988)
Authors: Nguyen-Quang-Rieu Deguchi, S. Izumiura, H. Kaifu, N. Ohishi, M. Suzuki, H. Ukita, Nobuharu
Journal: Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 330, July 1, 1988, p. 374-384. Research supported by the University of Tokyo.
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Non-detection table: Show non-detection table
Detection table: Show detection table (9 detection) Non-detection table: Show non-detection table (18 non-detection)

Abstract
A molecular line search in the range between 85 and 89 GHz has been performed in the circumstellar envelope of 11 evolved stars using the 45 m telescope at Nobeyama Radio Observatory equipped with an acoustooptical spectrometer with a 2 GHz bandwidth. Emissions of ²⁹SiO, ²⁸SiO, HCN, H¹³CN, HC₅N, HCO⁺, C₂H, C₄H, and C₃N have been observed. The authors have detected the ground-state ²⁹SiO J = 2-1 maser in several stars. They have also detected HCN emission in VY CMa, an oxygen-rich star.

Abstract

A molecular line search in the range between 85 and 89 GHz has been performed in the circumstellar envelope of 11 evolved stars using the 45 m telescope at Nobeyama Radio Observatory equipped with an acoustooptical spectrometer with a 2 GHz bandwidth. Emissions of ²⁹SiO, ²⁸SiO, HCN, H¹³CN, HC₅N, HCO⁺, C₂H, C₄H, and C₃N have been observed. The authors have detected the ground-state ²⁹SiO J = 2-1 maser in several stars. They have also detected HCN emission in VY CMa, an oxygen-rich star.

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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 NGU88

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

Distribution of sources from NGU88 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 'NGU88' 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 'NGU88' AND detected=true AND hide=false ORDER BY detected DESC,id