2004ApJ...612L.121Z

Query : 2004ApJ...612L.121Z

2004ApJ...612L.121Z - Astrophys. J., 612, L121-L124 (2004/September-2)

Andromeda IX: a new dwarf spheroidal satellite of M31.

ZUCKER D.B., KNIAZEV A.Y., BELL E.F., MARTINEZ-DELGADO D., GREBEL E.K., RIX H.-W., ROCKOSI C.M., HOLTZMAN J.A., WALTERBOS R.A.M., ANNIS J., YORK D.G., IVEZIC Z., BRINKMANN J., BREWINGTON H., HARVANEK M., HENNESSY G., KLEINMAN S.J., KRZESINSKI J., LONG D., NEWMAN P.R., NITTA A. and SNEDDEN S.A.

Abstract (from CDS):

We report the discovery of a new dwarf spheroidal satellite of M31, Andromeda IX, based on resolved stellar photometry from the Sloan Digital Sky Survey (SDSS). Using both SDSS and public archival data, we have estimated its distance and other physical properties, and compared these to the properties of a previously known dwarf spheroidal companion, Andromeda V, also observed by SDSS. Andromeda IX is the lowest surface brightness galaxy found to date (µ_V, 0_∼26.8 mag/arcsec2), and at the distance we estimate from the position of the tip of Andromeda IX's red giant branch, (m-M)0∼24.5 (805 kpc), Andromeda IX would also be the faintest galaxy known (MV~-8.3).

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Dwarf - Galaxies: Evolution - Galaxies: Individual: Name: Andromeda V - Galaxies: Individual: Name: Andromeda IX - Galaxies: Local Group

Nomenclature: And R (No. IX) added = NAME Andromeda R (No. IX) added.

Simbad objects: 7

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Number of rows : 7
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 NAME And NE reg 00 52.0 +44 06           ~ 19 1
4 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
5 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
6 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
7 NAME Local Group GrG ~ ~           ~ 9325 0

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