2023ApJ...945L...5Y

Query : 2023ApJ...945L...5Y

2023ApJ...945L...5Y - Astrophys. J., 945, L5 (2023/March-1)

A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream.

YANG Y., ZHAO J.-K., YE X.-H., ZHAO G. and TAN K.-F.

Abstract (from CDS):

We report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky. The color-magnitude diagram of Yangtze indicates a stellar population of age ∼11 Gyr and [M/H] ∼ -0.7 dex. It has a number density of about 5.5 stars deg–2 along with a surface brightness of ΣG ≃ 34.9 mag arcsec–2. The dynamics and metallicity estimate suggest that Yangtze may be closely related to Palomar 1 and the Anticenter Stream.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

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

Simbad objects: 9

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Number of rows : 9
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 Cetus-Palca Stream St* 01 31 +01.0           ~ 97 1
2 NAME Sagittarius Stream St* 02 22 +00.0           ~ 1001 0
3 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 267 1
4 NAME Eastern Banded Structure St* 08 56 +04.           ~ 17 0
5 NAME Anticenter Stream St* 10 51 -50.9           ~ 35 1
6 NAME LMS-1 Stream St* 13 14.5 +17 56           ~ 63 0
7 NAME Orphan Stream St* 19 09 -23.           ~ 281 0
8 NAME Tuc III G 23 56.6 -59 36           ~ 229 0
9 NAME Yangtze Stream St* ~ ~           ~ 1 0

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