2018ApJ...862..114S

Query : 2018ApJ...862..114S

2018ApJ...862..114S - Astrophys. J., 862, 114-114 (2018/August-1)

Stellar streams discovered in the Dark Energy Survey.

SHIPP N., DRLICA-WAGNER A., BALBINOT E., FERGUSON P., ERKAL D., LI T.S., BECHTOL K., BELOKUROV V., BUNCHER B., CAROLLO D., CARRASCO KIND M., KUEHN K., MARSHALL J.L., PACE A.B., RYKOFF E.S., SEVILLA-NOARBE I., SHELDON E., STRIGARI L., VIVAS A.K., YANNY B., ZENTENO A., ABBOTT T.M.C., ABDALLA F.B., ALLAM S., AVILA S., BERTIN E., BROOKS D., BURKE D.L., CARRETERO J., CASTANDER F.J., CAWTHON R., CROCCE M., CUNHA C.E., D'ANDREA C.B., DA COSTA L.N., DAVIS C., DE VICENTE J., DESAI S., DIEHL H.T., DOEL P., EVRARD A.E., FLAUGHER B., FOSALBA P., FRIEMAN J., GARCIA-BELLIDO J., GAZTANAGA E., GERDES D.W., GRUEN D., GRUENDL R.A., GSCHWEND J., GUTIERREZ G., HARTLEY W., HONSCHEID K., HOYLE B., JAMES D.J., JOHNSON M.D., KRAUSE E., KUROPATKIN N., LAHAV O., LIN H., MAIA M.A.G., MARCH M., MARTINI P., MENANTEAU F., MILLER C.J., MIQUEL R., NICHOL R.C., PLAZAS A.A., ROMER A.K., SAKO M., SANCHEZ E., SANTIAGO B., SCARPINE V., SCHINDLER R., SCHUBNELL M., SMITH M., SMITH R.C., SOBREIRA F., SUCHYTA E., SWANSON M.E.C., TARLE G., THOMAS D., TUCKER D.L., WALKER A.R., WECHSLER R.H. (The DES Collaboration)

Abstract (from CDS):

We perform a search for stellar streams around the Milky Way using the first 3 yr of multiband optical imaging data from the Dark Energy Survey (DES). We use DES data covering ∼5000 deg2 to a depth of g > 23.5 with a relative photometric calibration uncertainty of <1%. This data set yields unprecedented sensitivity to the stellar density field in the southern celestial hemisphere, enabling the detection of faint stellar streams to a heliocentric distance of ∼50 kpc. We search for stellar streams using a matched filter in color-magnitude space derived from a synthetic isochrone of an old, metal-poor stellar population. Our detection technique recovers four previously known thin stellar streams: Phoenix, ATLAS, Tucana III, and a possible extension of Molonglo. In addition, we report the discovery of 11 new stellar streams. In general, the new streams detected by DES are fainter, more distant, and lower surface brightness than streams detected by similar techniques in previous photometric surveys. As a by-product of our stellar stream search, we find evidence for extratidal stellar structure associated with four globular clusters: NGC 288, NGC 1261, NGC 1851, and NGC 1904. The ever-growing sample of stellar streams will provide insight into the formation of the Galactic stellar halo, the Milky Way gravitational potential, and the large- and small-scale distribution of dark matter around the Milky Way.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy: halo - Galaxy: structure - Local Group

Nomenclature: NAME Turbio Stream N=1. NAME Willka Yaku Stream N=1. NAME Aliqa Uma Stream N=1. NAME Turranburra Stream N=1. NAME Jhelum Stream N=1. NAME Tucana III Stream N=1. NAME Wambelong Stream N=1. NAME Elqui Stream N=1. NAME Palca Stream N=1. NAME Chenab Stream N=1. NAME Ravi Stream N=1. NAME Indus Stream N=1.

Simbad objects: 50

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Number of rows : 50
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Molonglo Stream St* 00 26 -24.4           ~ 8 0
2 NAME Magellanic Stream HVC 00 32 -30.0           ~ 971 1
3 NAME Elqui Stream St* 00 43 -36.9           ~ 14 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11156 1
5 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1042 0
6 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1503 2
7 NAME Cetus II G 01 17.9 -17 25           ~ 43 0
8 NAME Cetus-Palca Stream St* 01 31 +01.0           ~ 70 1
9 NAME Phoenix Stream St* 01 35.0 -49 53           ~ 42 0
10 * alf Eri Be* 01 37 42.84548 -57 14 12.3101 -0.36 0.30 0.46 0.49 0.60 B6Vpe 473 1
11 NAME Turbio Stream St* 01 52 -61.0           ~ 9 0
12 NAME EriPhe Overdensity G 01 54 -55.0           ~ 29 0
13 NAME Whiting 1 GlC 02 02 56.8 -03 15 10           ~ 149 0
14 NAME Aliqa Uma Stream St* 02 07 -31.5           ~ 24 0
15 NAME Sagittarius Stream St* 02 22 +00.0           ~ 875 0
16 NAME Willka Yaku Stream St* 02 24 -64.6           ~ 9 0
17 NAME Fornax Dwarf Spheroidal G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1744 1
18 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7069 0
19 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 520 0
20 NGC 1260 GiG 03 17 27.2296053456 +41 24 18.481941324   14.2       ~ 93 1
21 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 309 0
22 NAME Eridanus ClG GrG 03 38 32.00 -22 18 51.0           ~ 176 0
23 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 208 0
24 NAME Turranburra Stream St* 03 57 -18.0           ~ 9 0
25 [A2017] WG1 St* 04 16.6 -23 12           ~ 4 0
26 NAME Ret GlC 04 36 10.15 -58 51 34.8   14.00 14.25 13.50   ~ 163 1
27 [A2017] WG2 St* 04 42 -51.4           ~ 4 0
28 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1430 0
29 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17441 0
30 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 817 0
31 NAME Gal Anticenter reg 05 46 +28.9           ~ 913 0
32 NAME Wambelong Stream St* 06 02 -45.6           ~ 8 0
33 NAME Hermus Stream St* 13 40 +40.           ~ 15 0
34 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 351 0
35 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14422 0
36 NAME Hercules Aquila Cloud reg 19 04 +06.3           ~ 123 0
37 [A2017] WG4 St* 20 00 -49.4           ~ 4 0
38 [A2017] WG3 St* 20 16 -47.7           ~ 4 0
39 NAME Chenab Stream St* 21 17 -59.9           ~ 24 0
40 NAME Jhelum Stream St* 21 25 -45.1           ~ 28 0
41 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1030 1
42 NAME Indus Stream St* 21 35 -50.7           ~ 23 0
43 NAME Ravi Stream St* 22 19 -44.1           ~ 9 0
44 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 155 0
45 NAME Tucana III Stream St* 23 35 -59.7           ~ 11 0
46 NAME Local Group GrG ~ ~           ~ 8398 0
47 NAME Monoceros Stream St* ~ ~           ~ 358 1
48 NAME Galactic Bulge reg ~ ~           ~ 4300 0
49 NAME ATLAS Stream St* ~ ~           ~ 34 0
50 NAME Orphan Stream St* ~ ~           ~ 253 0

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