2006ApJ...638..772K

Query : 2006ApJ...638..772K

2006ApJ...638..772K - Astrophys. J., 638, 772-785 (2006/February-3)

The proper motion of the Large Magellanic Cloud using HST.

KALLIVAYALIL N., VAN DER MAREL R.P., ALCOCK C., AXELROD T., COOK K.H., DRAKE A.J. and GEHA M.

Abstract (from CDS):

We present a measurement of the systemic proper motion of the Large Magellanic Cloud (LMC) from astrometry with the High Resolution Camera (HRC) of the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST). We observed LMC fields centered on 21 background QSOs that were discovered from their optical variability in the MACHO database. The QSOs are distributed homogeneously behind the central few degrees of the LMC. With two epochs of HRC data and a ∼2 yr baseline, we determine the proper motion of the LMC to better than 5% accuracy: µW=-2.03±0.08 mas/yr, and µN=0.44±0.05 mas/yr. This is the most accurate proper-motion measurement for any Milky Way satellite thus far. When combined with H I data from the Magellanic Stream, this should provide new constraints on both the mass distribution of the Galactic halo and models of the Stream.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Magellanic Clouds

CDS comments: Table 1: numbering LNN not used in SIMBAD, objects are MACHO FFF.NNNNN.NNNN (col.2) in SIMBAD.

Simbad objects: 25

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Number of rows : 25
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Magellanic Stream HVC 00 32 -30.0           ~ 1079 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
4 [VV2006] J044611.2-720509 QSO 04 46 10.9481119032 -72 05 10.029043320     17.60     ~ 17 1
5 [KWV2015] J045356.54-694035.8 Sy1 04 53 56.5673598024 -69 40 35.744961612 18.804 19.328 19.04   18.09 ~ 12 0
6 OGLE LMC132.1 2375 Sy1 04 56 14.320 -67 39 09.30 18.545 19.318 19.33   18.42 ~ 12 0
7 [VV2006] J050054.0-664401 QSO 05 00 53.9643311184 -66 43 59.917398492     19.01   18.36 ~ 11 0
8 [VV2006] J050146.7-673241 Sy1 05 01 46.7365947984 -67 32 40.153037028 17.603 18.413 18.10 18.030 17.50 ~ 13 0
9 [VV2006] J050253.7-672546 QSO 05 02 53.730 -67 25 45.30 18.461 18.932 18.67   17.68 ~ 14 0
10 [VV2006] J050436.0-662417 QSO 05 04 36.0092765784 -66 24 15.870839076 17.636 18.340 18.056 17.790 17.331 ~ 11 0
11 [VV2006] J051032.3-692716 QSO 05 10 32.420 -69 27 15.80     19.04   18.25 ~ 14 0
12 [VV2006] J051412.0-702025 QSO 05 14 12.140 -70 20 26.00 18.450 18.785 18.57   17.94 ~ 14 0
13 [VV2006] J051536.1-705401 QSO 05 15 36.0668752272 -70 54 01.277137440     18.86   18.01 ~ 12 0
14 [VV2006] J051626.3-694818 QSO 05 16 26.320 -69 48 19.20 18.171 18.655 18.47   17.88 ~ 15 0
15 2MASS J05162885-6837022 Sy1 05 16 28.8102 -68 37 02.540     17.29   16.74 ~ 16 0
16 [VV2006] J051636.8-663436 QSO 05 16 36.8087531376 -66 34 35.967676116     18.20     ~ 10 0
17 [VV2006] J052056.9-702452 QSO 05 20 56.9752810165 -70 24 52.724008711 17.626 18.152 18.21   17.62 ~ 14 0
18 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
19 [VV2006] J052514.3-655445 QSO 05 25 14.4372126336 -65 54 45.829935756     18.72     ~ 12 0
20 [VV2006] J053026.8-664855 QSO 05 30 26.7351988512 -66 48 53.217890280     18.94     ~ 9 0
21 LEDA 3095722 Sy1 05 31 59.6922545184 -69 19 51.461379588   18.9 18.96   18.18 ~ 19 0
22 1RXS J054750.5-672803 Bla 05 47 50.1968324112 -67 28 01.529877612 15.915 16.737 16.283   15.899 ~ 26 1
23 MACHO 30.11301.499 Sy1 05 49 41.600 -69 44 15.10     19.95   19.16 ~ 10 0
24 QSO B0557-672 QSO 05 57 21.6241801392 -67 13 37.064984340     17.5     ~ 21 0
25 PMN J0602-6830 QSO 06 02 34.3252383975 -68 30 41.378721296     18.67   18.39 ~ 20 1

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