Andromeda IX: a new dwarf spheroidal satellite of M31

Daniel B. Zucker; Alexei Y. Kniazev; Eric F. Bell; David Martínez-Delgado; Eva K. Grebel; Hans Walter Rix; Constance M. Rockosi; Jon A. Holtzman; Rene A M Walterbos; James Annis; Donald G. York; Željko Ivezić; J. Brinkmann; Howard Brewington; Michael Harvanek; Greg Hennessy; S. J. Kleinman; Jurek Krzesinski; Dan Long; Peter R. Newman; Atsuko Nitta; Stephanie A. Snedden

doi:10.1086/424691

Andromeda IX: a new dwarf spheroidal satellite of M31

Daniel B. Zucker^*, Alexei Y. Kniazev, Eric F. Bell, David Martínez-Delgado, Eva K. Grebel, Hans Walter Rix, Constance M. Rockosi, Jon A. Holtzman, Rene A M Walterbos, James Annis, Donald G. York, Željko Ivezić, J. Brinkmann, Howard Brewington, Michael Harvanek, Greg Hennessy, S. J. Kleinman, Jurek Krzesinski, Dan Long, Peter R. NewmanAtsuko Nitta, Stephanie A. Snedden

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

126 Citations (Scopus)

Abstract

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 arcsec^-2), 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 (M_v ∼ -8.3).

Original language	English
Pages (from-to)	L121-L124
Number of pages	4
Journal	Astrophysical Journal
Volume	612
Issue number	2
DOIs	https://doi.org/10.1086/424691
Publication status	Published - 10 Sept 2004
Externally published	Yes

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Zucker, D. B., Kniazev, A. Y., Bell, E. F., Martínez-Delgado, D., Grebel, E. K., Rix, H. W., Rockosi, C. M., Holtzman, J. A., Walterbos, R. A. M., Annis, J., York, D. G., Ivezić, Ž., Brinkmann, J., Brewington, H., Harvanek, M., Hennessy, G., Kleinman, S. J., Krzesinski, J., Long, D., ... Snedden, S. A. (2004). Andromeda IX: a new dwarf spheroidal satellite of M31. Astrophysical Journal, 612(2), L121-L124. https://doi.org/10.1086/424691

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title = "Andromeda IX: a new dwarf spheroidal satellite of M31",

abstract = "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 (μv,0 ∼ 26.8 mag arcsec-2), 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).",

author = "Zucker, {Daniel B.} and Kniazev, {Alexei Y.} and Bell, {Eric F.} and David Mart{\'i}nez-Delgado and Grebel, {Eva K.} and Rix, {Hans Walter} and Rockosi, {Constance M.} and Holtzman, {Jon A.} and Walterbos, {Rene A M} and James Annis and York, {Donald G.} and {\v Z}eljko Ivezi{\'c} and J. Brinkmann and Howard Brewington and Michael Harvanek and Greg Hennessy and Kleinman, {S. J.} and Jurek Krzesinski and Dan Long and Newman, {Peter R.} and Atsuko Nitta and Snedden, {Stephanie A.}",

year = "2004",

month = sep,

day = "10",

doi = "10.1086/424691",

language = "English",

volume = "612",

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Zucker, DB, Kniazev, AY, Bell, EF, Martínez-Delgado, D, Grebel, EK, Rix, HW, Rockosi, CM, Holtzman, JA, Walterbos, RAM, Annis, J, York, DG, Ivezić, Ž, Brinkmann, J, Brewington, H, Harvanek, M, Hennessy, G, Kleinman, SJ, Krzesinski, J, Long, D, Newman, PR, Nitta, A & Snedden, SA 2004, 'Andromeda IX: a new dwarf spheroidal satellite of M31', Astrophysical Journal, vol. 612, no. 2, pp. L121-L124. https://doi.org/10.1086/424691

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T2 - a new dwarf spheroidal satellite of M31

AU - Zucker, Daniel B.

AU - Kniazev, Alexei Y.

AU - Bell, Eric F.

AU - Martínez-Delgado, David

AU - Grebel, Eva K.

AU - Rix, Hans Walter

AU - Rockosi, Constance M.

AU - Holtzman, Jon A.

AU - Walterbos, Rene A M

AU - Annis, James

AU - York, Donald G.

AU - Ivezić, Željko

AU - Brinkmann, J.

AU - Brewington, Howard

AU - Harvanek, Michael

AU - Hennessy, Greg

AU - Kleinman, S. J.

AU - Krzesinski, Jurek

AU - Long, Dan

AU - Newman, Peter R.

AU - Nitta, Atsuko

AU - Snedden, Stephanie A.

PY - 2004/9/10

Y1 - 2004/9/10

N2 - 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 (μv,0 ∼ 26.8 mag arcsec-2), 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).

AB - 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 (μv,0 ∼ 26.8 mag arcsec-2), 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).

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VL - 612

SP - L121-L124

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Andromeda IX: a new dwarf spheroidal satellite of M31

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