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NAKA93 - Detection of SiO and H2O masers in Galactic bulge sources

Short title: Nakada et al. (1993)
Authors: Nakada, Yoshikazu Onaka, Takashi Yamamura, Issei Deguchi, Shuji Ukita, Nobuharu Izumiura, Hideyuki
Journal: PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 45, no. 2, p. 179-189.
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Target type: star

Abstract
We present the results of the first survey of Galactic bulge objects by the SiO J = 1-0 and H2O 6₁₆ - 5₂₃ transitions. The sources were selected from the IRAS Point Source Catalog with 12 micron intensity less than 14 Jy and colors, between 0 and 0.2, extracting dust enshrouded objects at a distance of 8 kpc. Twenty three IRAS sources were observed SiO masers were detected in fifteen objects, and H2O in six sources. The overall properties of maser emission for bulge IRAS sources indicate that they are low-mass stars as optical Mira variables. The high detection rate of SiO masers in bulge objects seems to be due to the high sensitivity of the telescope used. The radial velocities of the maser lines reveal the average rotation of the bulge with a rotation velocity of 10 km/s/deg.

Abstract

We present the results of the first survey of Galactic bulge objects by the SiO J = 1-0 and H2O 6₁₆ - 5₂₃ transitions. The sources were selected from the IRAS Point Source Catalog with 12 micron intensity less than 14 Jy and colors, between 0 and 0.2, extracting dust enshrouded objects at a distance of 8 kpc. Twenty three IRAS sources were observed SiO masers were detected in fifteen objects, and H2O in six sources. The overall properties of maser emission for bulge IRAS sources indicate that they are low-mass stars as optical Mira variables. The high detection rate of SiO masers in bulge objects seems to be due to the high sensitivity of the telescope used. The radial velocities of the maser lines reveal the average rotation of the bulge with a rotation velocity of 10 km/s/deg.

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Detection table from Nakada et al. (1993)

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Line	V_range	V_peak	F_peak	Telescope	RMS	Detection	Class	Dist. (parallax)
	(J2000)	(J2000)	(deg.)	(deg.)			H₂O	(km/s)	(km/s)	(Jy)		(Jy)	Yes/No		(kpc)
1	17 18 37.4	-25 50 02	359.3367	6.7138	G359.337+6.714	IRAS 17155-2546	22 GHz;		-46.6	0.672	NRO	0.170	+H₂O +OH +SiO	EVOLVED
2	17 22 23.4	-27 20 07	358.5690	5.1710	G358.569+5.171	IRAS 17192-2717	22 GHz;	-171.6;-139.0	-171.6	1.848	NRO	0.170	+H₂O -OH +SiO	EVOLVED
3	17 28 11.1	-26 17 42	0.1586	4.6756	G0.159+4.675	IRAS 17250-2615	22 GHz;		-16.2	1.092	NRO	0.170	+H₂O -OH +SiO	EVOLVED
4	17 42 40.2	-21 24 10	6.0821	4.5034	G6.082+4.503	IRAS 17396-2122	22 GHz;		21.8	0.784	NRO	0.170	+H₂O -OH +SiO	EVOLVED
5	17 45 12.4	-23 08 27	4.9017	3.0970	G4.902+3.097	IRAS 17421-2307	22 GHz;		24.2	3.248	NRO	0.170	+H₂O -OH +SiO	EVOLVED
6	18 10 38.7	-28 05 04	3.4849	-4.3381	G3.485-4.338	IRAS 18074-2805	22 GHz;		110.5	0.42	NRO	0.170	+H₂O -OH +SiO	EVOLVED

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 Download UKIDSS K FITS	2MASS K Download 2MASS K FITS

select MAX(h2o_data_all.ra_hms) as ra_hms,MAX(h2o_data_all.dec_dms) as dec_dms,MAX(h2o_data_all.source_name) as source_name,MAX(h2o_data_all.ra) as ra,MAX(h2o_data_all.dec) as dec,MAX(h2o_data_all.l) as l,MAX(h2o_data_all.b) as b,MAX(h2o_data_all.grp) as grp,MAX(h2o_data_all.other_name) as other_name,MAX(h2o_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(h2o_data_all.line) as line,MAX(h2o_data_all.vrange) as vrange,MAX(h2o_data_all.vpeak) as vpeak,MAX(h2o_data_all.peak) as peak,MAX(h2o_data_all.fwhm) as fwhm,MAX(h2o_data_all.int) as int,MAX(h2o_data_all.rms) as rms,MAX(h2o_data_all.units) as units,MAX(h2o_data_all.units_rms) as units_rms,MAX(h2o_data_all.date_txt) as date_txt,MAX(h2o_data_all.telescope_ref) as telescope_ref,MAX(h2o_data_all.telescope_conf) as telescope_conf,MAX(h2o_data_all.v_step) as v_step,MAX(h2o_data_all.beam) as beam,MAX(h2o_data_all.beam_maj) as beam_maj,MAX(h2o_data_all.beam_min) as beam_min,MAX(h2o_data_all.beam_pa) as beam_pa,MAX(h2o_data_all.ref) as ref,MAX(h2o_data_all.list_ref) as list_ref,MAX(h2o_data_all.ascii) as ascii,MAX(h2o_data_all.url) as url,MAX(h2o_data_all.image) as image,MAX(h2o_data_all.image2) as image2,MAX(h2o_data_all.image3) as image3,MAX(h2o_data_all.descr) as descr,MAX(h2o_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(h2o_data_all.dist) as dist,1 as dist_parallax,MAX(h2o_data_all.date_txt) as date_txt,MAX(line_det) as line_det,MAX(type) as type,MAX(simbad_types_cat) as simbad_types_cat FROM h2o_data_all  LEFT JOIN all_objects_withmet ON h2o_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON h2o_data_all.line=transitions."Line"  WHERE ref ilike 'NAKA93' AND detected=true AND hide=false GROUP BY ref

select h2o_data_all.ra_hms,h2o_data_all.dec_dms,h2o_data_all.source_name,h2o_data_all.ra,h2o_data_all.dec,h2o_data_all.l,h2o_data_all.b,h2o_data_all.grp,h2o_data_all.other_name,h2o_data_all.other_desc,h2o_data_all.thermal,h2o_data_all.line,h2o_data_all.vrange,h2o_data_all.vpeak,h2o_data_all.peak,h2o_data_all.fwhm,h2o_data_all.int,h2o_data_all.rms,h2o_data_all.units,h2o_data_all.units_rms,h2o_data_all.date_txt,h2o_data_all.telescope_ref,h2o_data_all.telescope_conf,h2o_data_all.v_step,h2o_data_all.beam,h2o_data_all.beam_maj,h2o_data_all.beam_min,h2o_data_all.beam_pa,h2o_data_all.ref,h2o_data_all.list_ref,h2o_data_all.ascii,h2o_data_all.url,h2o_data_all.image,h2o_data_all.image2,h2o_data_all.image3,h2o_data_all.descr,h2o_data_all.id,h2o_data_all.mjy_flag,h2o_data_all.rms_mjy_flag,h2o_data_all.dist,h2o_data_all.dist_parallax,h2o_data_all.date_txt,line_det,type,simbad_types_cat FROM h2o_data_all   LEFT JOIN all_objects_withmet ON h2o_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON h2o_data_all.line=transitions."Line"  WHERE ref ilike 'NAKA93' AND detected=true AND hide=false ORDER BY detected DESC,id

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NAKA93 - Detection of SiO and H2O masers in Galactic bulge sources

View as list of objects

Detection table from Nakada et al. (1993)