2024ApJ...965...10T

Query : 2024ApJ...965...10T

2024ApJ...965...10T - Astrophys. J., 965, 10 (2024/April-2)

A New Tidal Stream Discovered in Gaia DR3.

TIAN H., LIU C., LUO C., XUE X.-X. and YANG Y.

Abstract (from CDS):

Thanks to the precise astrometric measurements of proper motions by the Gaia mission, a new tidal stellar stream has been discovered in the northern hemisphere. The distribution of star count shows that the stream is approximately 80° long and 1.°70 wide. Observations of 21 member stars, including 14 RR Lyrae stars, indicate that the stream has an eccentric and retrograde orbit with e = 0.58. The low metallicity, high total energy, and large angular momentum suggest that it is associated with the merging event Sequoia. This discovery suggests the possibility of finding more substructures with high eccentricity orbits, even in the inner halo.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar streams - Galaxy structure - Milky Way stellar halo

Status at CDS : Examining the need for a new acronym. // All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 28

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Number of rows : 28
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 Anticenter Stream St* 10 51 -50.9           ~ 35 1
3 ZTF J115008.48-130711.3 RR* 11 50 08.4816853008 -13 07 11.377234380     18.15     ~ 10 0
4 ZTF J121728.53-122642.4 RR* 12 17 28.5269104560 -12 26 42.514240272     18.19     ~ 10 0
5 ATO J189.6878-12.1394 RR* 12 38 45.0917565984 -12 08 22.165665000           ~ 11 0
6 Gaia DR3 3624655156023507968 RR* 13 08 49.5312627336 -09 26 31.652746440           ~ 3 0
7 Gaia DR3 3627914172911966848 RR* 13 09 53.6466114426 -08 09 16.823262034           ~ 4 0
8 ZTF J135605.43-063309.0 RR* 13 56 05.4337995864 -06 33 09.098997660     17.69     ~ 13 0
9 2MASS J13570327-0729229 RR* 13 57 03.2798068992 -07 29 22.769252592     17.73     ~ 9 0
10 CRTS J141559.0-053844 RR* 14 15 59.0520314064 -05 38 44.603105604     17.77     ~ 10 0
11 Gaia DR3 3649315067235241600 RG* 14 34 56.7802020339 -02 00 08.319181084           ~ 1 0
12 Gaia DR3 6340521616196050560 RG* 15 00 44.9613859493 -02 00 30.927940678           ~ 1 0
13 [DCD2013] CSS J150957.3-044447 RR* 15 09 57.4816906104 -04 44 48.568342740     17.54     ~ 8 0
14 Gaia DR3 4416756492453565952 RG* 15 36 48.7834828738 +00 21 29.456010630           ~ 1 0
15 Gaia DR3 4416442577587619328 RG* 15 38 14.7072723932 -00 27 27.317049531           ~ 1 0
16 Gaia DR3 4416467733212650624 RG* 15 39 02.8666180429 -00 21 53.668370556           ~ 1 0
17 LINEAR 15218210 RR* 15 46 31.3296029328 +01 01 47.237378412     17.53     A0 12 0
18 Gaia DR3 4422678633880782464 RG* 15 48 17.4523559072 +00 44 19.603200366           ~ 1 0
19 V* V492 Ser RR* 15 56 36.2936014992 -02 11 46.765002012     17.80     ~ 12 0
20 LINEAR 15628518 RR* 15 57 54.6186872832 +00 18 49.508524692     17.44     ~ 13 0
21 LINEAR 16019992 RR* 16 00 41.3410635768 +02 18 35.493207696     17.22     ~ 9 0
22 ZTF J162915.71+022557.7 RR* 16 29 15.7072334136 +02 25 57.691815600     17.40     ~ 11 0
23 NAME Cocytos Stream St* 16 29 21.0 +26 40 08           ~ 19 0
24 LAMOST J163415.85+065103.7 RG* 16 34 15.8525647803 +06 51 03.739096247           ~ 2 0
25 NAME Sequoia Cluster GlC 17 31 12.0 -39 48 30           ~ 154 0
26 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
27 NAME Gaia Enceladus-Sausage St* ~ ~           ~ 860 0
28 NAME Virgo Overdensity reg ~ ~           ~ 53 0

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