2019ApJ...885....3S

Query : 2019ApJ...885....3S

2019ApJ...885....3S - Astrophys. J., 885, 3-3 (2019/November-1)

Proper motions of stellar streams discovered in the Dark Energy Survey.

SHIPP N., LI T.S., PACE A.B., ERKAL D., DRLICA-WAGNER A., YANNY B., BELOKUROV V., WESTER W., KOPOSOV S.E., KUEHN K., LEWIS G.F., SIMPSON J.D., WAN Z., ZUCKER D.B., MARTELL S.L., WANG M.Y. (The S5 Collaboration)

Abstract (from CDS):

We cross-match high-precision astrometric data from Gaia DR2 with accurate multiband photometry from the Dark Energy Survey (DES) DR1 to confidently measure proper motions for nine stellar streams in the DES footprint: Aliqa Uma, ATLAS, Chenab, Elqui, Indus, Jhelum, Phoenix, Tucana III, and Turranburra. We determine low-confidence proper-motion measurements for four additional stellar streams: Ravi, Wambelong, Willka Yaku, and Turbio. We find evidence for a misalignment between stream tracks and the systemic proper motion of streams that may suggest a systematic gravitational influence from the Large Magellanic Cloud (LMC). These proper motions, when combined with radial velocity measurements, will allow for detailed orbit modeling that can be used to constrain properties of the LMC and its effect on nearby streams, as well as global properties of the Milky Way's gravitational potential.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Stellar kinematics - Milky Way Galaxy - Milky Way stellar halo - Local Group - Galaxy structure

VizieR on-line data: <Available at CDS (J/ApJ/885/3): table7.dat>

Simbad objects: 42

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Number of rows : 42
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 Molonglo Stream St* 00 26 -24.4           ~ 10 0
2 NAME Magellanic Stream HVC 00 32 -30.0           ~ 1079 1
3 NAME Elqui Stream St* 00 43 -36.9           ~ 22 0
4 NAME Cetus-Palca Stream St* 01 31 +01.0           ~ 97 1
5 NAME Phoenix Stream St* 01 35.0 -49 53           ~ 52 0
6 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
7 NAME Turbio Stream St* 01 52 -61.0           ~ 11 0
8 NAME EriPhe Overdensity G 01 54 -55.0           ~ 30 0
9 NAME Aliqa Uma Stream St* 02 07 -31.5           ~ 33 0
10 NAME Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
11 NAME Willka Yaku Stream St* 02 24 -64.6           ~ 15 0
12 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
13 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 579 0
14 NAME Turranburra Stream St* 03 57 -18.0           ~ 13 0
15 ATO J060.7207-19.4597 RR* 04 02 52.9836803088 -19 27 34.928907840     17.36     ~ 11 0
16 ATO J061.5281-15.8799 RR* 04 06 06.7536092544 -15 52 47.896234536     17.97     ~ 9 0
17 CRTS J040642.8-170506 RR* 04 06 42.7605578016 -17 05 05.059771440     17.79     ~ 10 0
18 CRTS J040939.0-143813 RR* 04 09 39.0768779352 -14 38 14.023999500     17.69     ~ 8 0
19 DES J041346.31-172515.3 RR* 04 13 46.3128126264 -17 25 15.260736396           ~ 5 0
20 CRTS J041749.3-210112 RR* 04 17 49.1647950288 -21 01 12.640979532     17.86     ~ 10 0
21 Gaia DR3 4899710545386636160 RR* 04 25 31.6113790704 -20 54 14.088135672           ~ 3 0
22 CRTS J042734.3-210253 RR* 04 27 34.2986532192 -21 02 53.727181224     17.81     ~ 10 0
23 CRTS J043414.3-263029 RR* 04 34 14.4036030936 -26 30 28.202933340     17.53     ~ 8 0
24 CRTS J044303.1-245128 RR* 04 43 02.9698548024 -24 51 28.929258180     17.47     ~ 9 0
25 CRTS J045115.6-263735 RR* 04 51 15.6103432776 -26 37 33.975293088     17.66     ~ 11 0
26 CRTS J045331.2-253842 RR* 04 53 31.1845823544 -25 38 43.893910644     17.78     ~ 9 0
27 CRTS J045518.3-255038 RR* 04 55 18.1399978704 -25 50 39.010644024     17.49     ~ 10 0
28 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
29 NAME Wambelong Stream St* 06 02 -45.6           ~ 11 0
30 NAME Hermus Stream St* 13 40 +40.           ~ 16 0
31 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
32 NAME Orphan Stream St* 19 09 -23.           ~ 281 0
33 NAME Chenab Stream St* 21 17 -59.9           ~ 45 0
34 NAME Jhelum Stream St* 21 25 -45.1           ~ 40 0
35 NAME Indus Stream St* 21 35 -50.7           ~ 34 0
36 NAME Ravi Stream St* 22 19 -44.1           ~ 15 0
37 NAME GD-1 Stream St* 22 40 +31.           ~ 319 0
38 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
39 NAME Tucana III Stream St* 23 35 -59.7           ~ 13 0
40 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
41 NAME Local Group GrG ~ ~           ~ 9325 0
42 NAME ATLAS Stream St* ~ ~           ~ 44 0

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