Dynamical masses of young stellar objects with the VLBA: DYNAMO-VLBA - Trigonometric parallaxes and proper motions of YSOs in Orion

Open Access

Table 6.

VLBA astrometric parameters at epoch J2016.0.

Name	SpT	N_det	RA [2016.0]	Dec [2016.0]	ϖ	Distance	μ_α^*	μ_δ
			(deg)	(deg)	(mas)	(pc)	(mas yr⁻¹)	(mas yr⁻¹)
NGC 2068
GBS J054643.62+000528.3	...	14	86.681758636(48)	0.091202441(34)	2.40 ± 0.17	417 ± 29	−0.75 ± 0.08	−0.86 ± 0.06
HD 290862	B3/5	15	86.680773553(88)	0.076676023(165)	2.61 ± 0.31	383 ± 46	0.54 ± 0.15	−0.57 ± 0.27
[SSC75] M 78 11	A0II	16	86.688908026(40)	0.044525815(27)	2.48 ± 0.13	403 ± 21	0.32 ± 0.07	−0.98 ± 0.05

NGC 2024
[BCB89] IRS 11	...	12	85.409371973(29)	–1.885901080(67)	2.37 ± 0.08	423 ± 14
2MASS J05414134–01533260 ^a	...	19/8	85.422302898(25)	–1.892455570(119)	2.53 ± 0.06	396 ± 9	1.35 ± 0.05	−0.75 ± 0.22
[BCB89] IRS 15	...	17	85.407264414(39)	–1.897662194(44)	2.50 ± 0.13	400 ± 21	−0.13 ± 0.06	−0.44 ± 0.07
CXOU J054145.8–015411	...	11	85.441259858(160)	–1.903104814(103)	2.47 ± 0.08	405 ± 13	−0.38 ± 0.03	−0.50 ± 0.11
2MASS J05413786-0154323	...	11	85.407772400(48)	–1.908877676(52)	2.38 ± 0.14	420 ± 25	−0.26 ± 0.08	−0.71 ± 0.10
2MASS J05414138-0154445	...	5	85.422458006(167)	–1.912431516(186)	2.39 ± 0.44	419 ± 77	1.00 ± 0.54	−2.17 ± 0.61
CXOU J054146.1-015622 ^a	...	20/17	85.442316034(25)	–1.939499847(150)	2.56 ± 0.09	391 ± 14	0.14 ± 0.01	−0.83 ± 0.20
V* V621 Ori	...	7	85.469117322(39)	–2.064338636(21)	2.47 ± 0.12	406 ± 19	0.62 ± 0.13	−1.13 ± 0.07

σOrionis
HD 294300 ^a	G5e	5/11	84.902253176(217)	–2.704789011(98)	2.48 ± 0.07	404 ± 12	1.95 ± 0.07	−0.48 ± 0.21

ONC
HD 37017 ^a	B2/3V	5	83.841118043(17)	–4.494166594(44)	2.64 ± 0.03	379 ± 4	1.85 ± 0.04	1.21 ± 0.10
V* V1727 Ori	K6	4	83.801917776(40)	–4.740537823(145)	2.24 ± 0.14	447 ± 29	2.51 ± 0.22	−1.35 ± 0.78
V* V1699 Ori	M2.9	5	83.693405512(28)	–4.900561366(27)	2.48 ± 0.07	404 ± 11	1.75 ± 0.09	−0.89 ± 0.10
V* V492 Ori	K8	4	83.844010568(259)	–5.133537615(17)	2.59 ± 0.57	386 ± 85	1.59 ± 0.35	0.25 ± 0.02
V* V1321 Ori	K0III	5	83.767921688(38)	–5.136839750(72)	2.48 ± 0.09	404 ± 15	0.05 ± 0.13	7.06 ± 0.24
V* V363 Ori	K:	5	83.919907841(13)	–5.150435655(84)	2.63 ± 0.07	380 ± 10	0.44 ± 0.05	−0.86 ± 0.28
Brun 656 ^a	G2III	17/7	83.838825715(44)	–5.203522220(103)	2.48 ± 0.06	403 ± 9	1.73 ± 0.04	−0.36 ± 0.13
V* NU Ori ^a	B0.5V	28	83.880691065(124)	–5.267376172(182)	2.44 ± 0.10	410 ± 16	1.46 ± 0.07	1.65 ± 0.26
V* V1230 Ori ^b	B1	9	83.836354438(27)	–5.362316314(70)	2.51 ± 0.04	398 ± 7	−2.02 ± 0.08	4.20 ± 0.13
COUP 450 ^c	K5V	16	83.799184034(15)	–5.363684562(21)	2.58 ± 0.04	388 ± 6	1.57 ± 0.04	−1.41 ± 0.05
V* V1229 Ori	K0	16	83.826553477(16)	–5.377063296(22)	2.57 ± 0.06	390 ± 8	2.30 ± 0.03	0.70 ± 0.04
ALMA J053514.50-052238.7 ^a	...	8	83.810423127(26)	-5.377416249(67)	2.65 ± 0.04	378 ± 5	1.27 ± 0.03	−2.21 ± 0.04
V* MT Ori ^a	K2	15	83.824802068(48)	–5.379286952(72)	2.66 ± 0.03	376 ± 4	3.57 ± 0.05	2.20 ± 0.10
θ¹ Ori E	G2IV	15	83.815723310(17)	–5.386075078(18)	2.51 ± 0.06	399 ± 10	1.41 ± 0.03	1.06 ± 0.04
V* KM Ori	K5Ve	7	83.733225019(55)	–5.386955233(20)	2.47 ± 0.16	404 ± 27	1.78 ± 0.09	0.04 ± 0.04
θ¹ Ori A₂	...	16	83.815954882(13)	–5.387264298(25)	2.53 ± 0.04	394 ± 7	4.81 ± 0.02	−2.48 ± 0.05
V* V1399 Ori ^a	G8	10	83.837705511(43)	–5.396945588(100)	2.42 ± 0.09	413 ± 15	0.37 ± 0.02	0.46 ± 0.14
Z05351603	...	5	83.816832315(62)	–5.398072705(15)	2.72 ± 0.21	368 ± 28	2.26 ± 0.19	1.27 ± 0.11
Parenago 1540 ^a	K3V+K5V	5	83.665665534(12)	–5.407112180(22)	2.50 ± 0.07	400 ± 11	−3.92 ± 0.08	−1.12 ± 0.06
VLBA 13	...	4	83.84532288(24)	–5.41600310(23)	3.58 ± 1.06	279 ± 83	0.61 ± 0.46	4.12 ± 0.44
V* V1501 Ori	K4 - M1	10	83.814812353(12)	–5.420590307(30)	2.51 ± 0.03	398 ± 5	1.64 ± 0.03	1.59 ± 0.07
HD 37150	B3III/IV	5	84.062621199(29)	–5.647921522(23)	2.56 ± 0.08	390 ± 11	1.30 ± 0.10	−0.57 ± 0.10

L1641
TYC 5346-538-1	B8.1	6	85.640320325(27)	–8.120884216(71)	2.31 ± 0.09	433 ± 17	0.67 ± 0.10	−0.31 ± 0.25
2MASS J05420800–0812028	M2.2	6	85.533253837(28)	–8.200832577(107)	2.26 ± 0.09	442 ± 17	0.13 ± 0.10	−0.88 ± 0.37

Notes. Columns are (left to right): Source name, RA and Dec columns give the source coordinates at epoch J2016.0 from the VLBA astrometric solutions (after applying the calibrator-position corrections described in Sect. 3.4).

Astrometric parameters derived by including orbital parameters in the fitted model. Orbital parameters are presented and discussed in Paper II.

Astrometric parameters derived by including acceleration terms in the fitted model. Resulted in ( ${\dot{μ}}_{α}^{*}$ $Mathematical equation: $ \dot{\mu}_\alpha^* $$ , ${\dot{μ}}_{δ}) = (- 0.60 \pm 0.06$ $Mathematical equation: $ \dot{\mu}_\delta )=( -0.60\pm0.06 $$ , −1.80 ± 0.11) [mas yr⁻²].

Astrometric parameters derived by including acceleration terms in the fitted model. Resulted in ( ${\dot{μ}}_{α}^{*}$ $Mathematical equation: $ \dot{\mu}_\alpha^* $$ , ${\dot{μ}}_{δ}) = (- 0.14 \pm 0.04$ $Mathematical equation: $ \dot{\mu}_\delta )=( -0.14\pm0.04 $$ , 0.08 ± 0.05) [mas yr⁻²].

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.