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CHI14 - Trigonometric parallax of IRAS 22555+6213 with VERA: Three-dimensional view of sources along the same line of sight

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Short title: Chibueze et al. (2014)
Authors: Chibueze, James O.Sakanoue, HirofumiNagayama, TakumiOmodaka, ToshihiroHanda, ToshihiroKamezaki, TatsuyaBurns, Ross A.Kobayashi, HideyukiNakanishi, HiroyukiHonma, MarekiUeno, YujiKurayama, TomoharuMatsuo, MitsuhiroSakai, Nobuyuki
Journal: Publications of the Astronomical Society of Japan, Volume 66, Issue 6, id.104 10 pp.
Bibcode:

Target type: High_mass_SFR

Abstract
We report the results of the measurement of the trigonometric parallax of an H2O maser source in IRAS 22555+6213 with the VLBI Exploration of Radio Astrometry (VERA). The annual parallax was determined to be 0.314 � 0.070 mas, corresponding to a distance of 3.18^{+0.90}_{-0.66} kpc. Our results confirm IRAS 22555+6213 to be located in the Perseus arm. We computed the peculiar motion of IRAS 22555+6213 to be (Usrc, Vsrc, Wsrc) = (4 � 4, -32 � 6, 8 � 6) km s-1, where Usrc, Vsrc, and Wsrc are directed toward the Galactic center, in the direction of Galactic rotation and toward the Galactic north pole, respectively. IRAS 22555+6213, NGC 7538, and Cepheus A lie along the same line of sight, and are within 2� on the sky. Their parallax distances, with which we derived their absolute position in the Milky Way, show that IRAS 22555+6213 and NGC 7538 are associated with the Perseus Arm, while Cepheus A is located in the Local Arm. We compared the kinematic distances of IRAS 22198+6336, G108.18+05.51, G108.20-00.58, G108.47+02.81, G108.59+00.49, Cepheus A, NGC 7538, G111.23-01.23, G111.25-00.76, and IRAS 22555+6213 derived with flat and non-flat rotation curves with their parallax distance and found the kinematic distance derived from the non-flat rotation assumption (-5 to -39 km s-1 lag) to be consistent with the parallax distance.

Abstract

We report the results of the measurement of the trigonometric parallax of an H2O maser source in IRAS 22555+6213 with the VLBI Exploration of Radio Astrometry (VERA). The annual parallax was determined to be 0.314 � 0.070 mas, corresponding to a distance of 3.18^{+0.90}_{-0.66} kpc. Our results confirm IRAS 22555+6213 to be located in the Perseus arm. We computed the peculiar motion of IRAS 22555+6213 to be (Usrc, Vsrc, Wsrc) = (4 � 4, -32 � 6, 8 � 6) km s-1, where Usrc, Vsrc, and Wsrc are directed toward the Galactic center, in the direction of Galactic rotation and toward the Galactic north pole, respectively. IRAS 22555+6213, NGC 7538, and Cepheus A lie along the same line of sight, and are within 2� on the sky. Their parallax distances, with which we derived their absolute position in the Milky Way, show that IRAS 22555+6213 and NGC 7538 are associated with the Perseus Arm, while Cepheus A is located in the Local Arm. We compared the kinematic distances of IRAS 22198+6336, G108.18+05.51, G108.20-00.58, G108.47+02.81, G108.59+00.49, Cepheus A, NGC 7538, G111.23-01.23, G111.25-00.76, and IRAS 22555+6213 derived with flat and non-flat rotation curves with their parallax distance and found the kinematic distance derived from the non-flat rotation assumption (-5 to -39 km s-1 lag) to be consistent with the parallax distance.

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Detection table from Chibueze et al. (2014)

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	#	Maser spot	Source name	Image	Descr.	Line	V_range	V_peak	μ_X	μ_Y	π	F_peak	Telescope	V_step	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)							H₂O	(km/s)	(km/s)	(mas/yr)	(mas/yr)	(mas)	(mJy)		(km/s)	Yes/No		(kpc)
1	+22 57 29.806	+62 29 46.837			110.1960981	2.4761751	G110.196+2.476			IRAS 22555+6213	Image	Descr	22 GHz;	-65.9;-67.9	-1.0				40	VERA	0.42	+H₂O +CH₃OH II	EVOLVED	3.18 (+0.90 -0.66)	2010 May 28 - 2013 Jan 26
	+22 57 29.8069556	+62 29 46.817294	14.214 mas	-19.666 mas	110.196097	2.476169		1	1	IRAS 22555+6213					- 63.372	-1.86 (0.07)	- 0.74 (0.05)	0.358 (0.079)
	+22 57 29.8064452	+62 29 46.831436	6.558 mas	-5.524 mas	110.196098	2.476173		2	2	IRAS 22555+6213					- 63.372	-1.97 (0.09)	- 0.60 (0.16)
	+22 57 29.806956	+62 29 46.817279	14.22 mas	-19.681 mas	110.196097	2.476169		3	3	IRAS 22555+6213					- 63.793	-1.90 (0.08)	- 0.77 (0.08)	0.351 (0.085)
	+22 57 29.8064449	+62 29 46.831565	6.554 mas	-5.395 mas	110.196098	2.476173		4	4	IRAS 22555+6213					- 63.793	- 2.03 (0.04)	- 0.49 (0.24)
	+22 57 29.806953	+62 29 46.817329	14.175 mas	-19.631 mas	110.196097	2.476169		5	5	IRAS 22555+6213					- 64.215	-1.88 (0.08)	- 0.82 (0.07)	0.378 (0.084)
	+22 57 29.8069439	+62 29 46.817442	14.039 mas	-19.518 mas	110.196097	2.476169		6	6	IRAS 22555+6213					- 64.636	-1.89 (0.07)	- 0.93 (0.12)	0.356 (0.039)
	+22 57 29.8063343	+62 29 46.834528	4.895 mas	-2.432 mas	110.196098	2.476174		7	7	IRAS 22555+6213					- 65.057	- 2.19 (0.07)	- 0.53 (0.12)	0.161 (0.036)
	+22 57 29.8063356	+62 29 46.834387	4.914 mas	-2.573 mas	110.196098	2.476174		8	8	IRAS 22555+6213					- 65.479	- 2.43 (0.07)	- 0.39 (0.12)	0.155 (0.064)
	+22 57 29.8060146	+62 29 46.836997	0.099 mas	0.037 mas	110.196098	2.476175		9	9	IRAS 22555+6213					- 65.900	- 2.12 (0.21)	-1.17 (0.36)	0.592 (0.135)
	+22 57 29.8060253	+62 29 46.834058	0.26 mas	-2.902 mas	110.196098	2.476174		10	10	IRAS 22555+6213					- 65.900	-1.71 (0.03)	- 0.70 (0.26)	0.243 (0.021)
	+22 57 29.8060164	+62 29 46.836943	0.126 mas	-0.017 mas	110.196098	2.476175		11	11	IRAS 22555+6213					- 66.321	- 2.28 (0.06)	- 0.40 (0.11)	0.225 (0.044)
	+22 57 29.806008	+62 29 46.83696	0 mas	0 mas	110.196098	2.476175		12	12*	IRAS 22555+6213					- 66.743	- 2.21 (0.06)	- 0.45 (0.11)	0.243 (0.051)
	+22 57 29.8059982	+62 29 46.836999	-0.147 mas	0.039 mas	110.196098	2.476175		13	13	IRAS 22555+6213					- 67.164	- 2.17 (0.06)	- 0.47 (0.11)	0.221 (0.042)
	+22 57 29.8059831	+62 29 46.837031	-0.373 mas	0.071 mas	110.196098	2.476175		14	14	IRAS 22555+6213					- 67.585	- 2.07 (0.06)	0.52 (0.11)	0.211 (0.046)
	+22 57 29.805974	+62 29 46.837003	-0.51 mas	0.043 mas	110.196098	2.476175		15	15	IRAS 22555+6213					- 68.007	-1.95 (0.21)	- 0.96 (0.36)	0.375 (0.125)

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 'CHI14' 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 'CHI14' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

CHI14 - Trigonometric parallax of IRAS 22555+6213 with VERA: Three-dimensional view of sources along the same line of sight

Interferometry data

View as list of objects

Detection table from Chibueze et al. (2014)