Properties of bow-shock sources at the Galactic center

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Volume 567 (July 2014)

A&A, 567 (2014) A21

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Table 10

3D coordinates and velocities of IRS 1W, IRS 10W, IRS 21, and IRS 5.

Star	IRS 1W	IRS 5	IRS 10W	IRS 21


x [ arcsec ] ^a	5.26 ± 0.009	8.62 ± 0.02	6.5 ± 0.01	–2.35 ± 0.001
y [ arcsec ] ^a	0.616 ± 0.016	9.83 ± 0.032	5.15 ± 0.02	–2.69 ± 0.001
z [ arcsec ] ^b	7.53 ± 1.53	3.81 ± 2.66	6.43 ± 1.5	4.45 ± 1.07
v_e [ km s^-1 ] ^c	320 ± 29	266 ± 7	303 ± 13	412 ± 30
v_RA [ km s^-1 ] ^d	–164 ± 35	54 ± 18	–21 ± 21	165 ± 13
v_Dec [ km s^-1 ] ^d	309 ± 22	26 ± 25	216 ± 14	57 ± 33
v_LOS [ km s^-1 ] ^e	[–18, 18]	[113, 334]	[–307, 307]	[–79, 261]

Notes.

^(a)

Projected distances from Sgr A*.

^(b)

LOS distance from the plane containing Sgr A*, using the NA model of Paumard et al. (2004).

^(c)

3D escape velocity at the position of the source.

^(d)

Proper motion measured in this work.

^(e)

3σ range on the LOS velocity of the bow shocks.

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