2015ApJ...812L..26G


Query : 2015ApJ...812L..26G

2015ApJ...812L..26G - Astrophys. J., 812, L26 (2015/October-3)

An orphan no longer? detection of the southern orphan stream and a candidate progenitor.

GRILLMAIR C.J., HETHERINGTON L., CARLBERG R.G. and WILLMAN B.

Abstract (from CDS):

Using a shallow, two-color survey carried out with the Dark Energy Camera, we detect the southern, possibly trailing arm of the Orphan Stream. The stream is reliably detected to a decl. of -38°, bringing the total known length of the Orphan Stream to 108°. We find a slight offset or ''S'' shape in the stream at δ ~= -14° that would be consistent with the transition from leading to trailing arms. This coincides with a moderate concentration of 137±25 stars (to g = 21.6) that we consider a possible remnant of the Orphan progenitor. The position of this feature is in agreement with previous predictions.

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

Simbad objects: 8

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Number of rows : 8
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 Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
2 NAME HVC Complex A HVC 08 36 +64.4           ~ 138 0
3 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
4 Cl Ruprecht 106 GlC 12 38 40.20 -51 09 01.0           ~ 413 0
5 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
6 Cl Pal 5 GlC 15 16 05.30 -00 06 41.0   15.1       ~ 797 1
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
8 NAME Orphan Stream St* 19 09 -23.           ~ 281 0

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