Milky Way versus Andromeda: a tale of two disks
@article{Yin2009MilkyWV, title={Milky Way versus Andromeda: a tale of two disks}, author={J. Yin and J. L. Hou and Nikos Prantzos and Samuel Boissier and Rui-xiang Chang and Shiyin Shen and B. Zhangh}, journal={Astronomy and Astrophysics}, year={2009}, volume={505}, pages={497-508} }
Aims. We study the chemical evolution of the disks of the Milky Way (MW) and of Andromeda (M 31), to identify the common properties and differences between the two major galaxies of the Local Group. Methods. We use a large set of observational data for M 31, including observations of the star formation rate (SFR) and gas profiles, as well as stellar metallicity distributions along its disk. When expressed in terms of the corresponding disk scale lengths, we show that the observed radial…
Figures and Tables from this paper
91 Citations
The evolution of the Milky Way: New insights from open clusters
- Physics, Geology
- 2016
We have collected high-dispersion echelle spectra of red giant members in the twelve open clusters (OCs) and derived stellar parameters and chemical abundances for 26 species by either line…
THE RECENT STELLAR ARCHEOLOGY OF M31—THE NEAREST RED DISK GALAXY
- Physics
- 2012
We examine the star-forming history of the M31 disk during the past few hundred Myr. The luminosity functions (LFs) of main-sequence stars at distances RGC > 21 kpc (i.e., >4 disk scale lengths) are…
A LARGE GROUP OF ASYMPTOTIC GIANT BRANCH STARS IN THE DISK OF M31: A MISSING PIECE OF THE PUZZLE?
- Physics
- 2012
We examine the properties of a stellar grouping that is ∼3.5 kpc to the northeast of the center of M31. This structure has (1) a surface brightness that is lower than the surrounding disk, (2) a…
UNVEILING THE MILKY WAY: A NEW TECHNIQUE FOR DETERMINING THE OPTICAL COLOR AND LUMINOSITY OF OUR GALAXY
- Physics
- 2015
We demonstrate a new statistical method of determining the global photometric properties of the Milky Way (MW) to an unprecedented degree of accuracy, allowing our Galaxy to be compared directly to…
THE STELLAR ARCHEOLOGY OF THE M33 DISK: RECENT STAR-FORMING HISTORY AND CONSTRAINTS ON THE TIMING OF AN INTERACTION WITH M31,
- Physics
- 2011
Images recorded with MegaCam are used to investigate the recent (t ⩽ 0.25 Gyr) star-forming history (SFH) of the Local Group Sc galaxy M33. The data sample the entire star-forming disk, as well as…
The bar of the Andromeda galaxy revealed by integral field spectroscopy
- Physics
- 2016
The Andromeda galaxy M31 is the nearest large spiral galaxy to our own Milky Way and therefore gives us the unique opportunity to study this galaxy type in great detail. A longstanding question…
Chemical Evolution of M31
- Physics, Geology
- 2015
We review chemical evolution models developed for M31 as well as the abundance determinations available for this galaxy. Then we present a recent chemical evolution model for M31 including radial gas…
Dissecting simulated disc galaxies - I. The structure of mono-age populations
- Physics
- 2014
We study seven simulated disc galaxies, three with a quiescent merger history, and four with mergers in their last 9 Gyr of evolution. We compare their structure at z = 0 by decomposing them into…
The two regimes of the cosmic sSFR evolution are due to spheroids and discs
- Physics
- 2013
This paper aims at explaining the two phases in the observed specific star formation rate (sSFR), namely the high (>3/Gyr) values at z>2 and the smooth decrease since z=2. In order to do this, we…
Spectroscopic study of globular clusters in the halo of M31 with the Xinglong 2.16 m telescope
- Physics
- 2011
We present spectroscopic observations for 11 confirmed globular clusters (GCs) of M31 with the OMR spectrograph on the 2.16 m telescope at the Xinglong site of National Astronomical Observatories,…
References
SHOWING 1-10 OF 126 REFERENCES
Contrasting the chemical evolution of the Milky Way and Andromeda
- Physics
- 2004
The chemical evolution history of a galaxy hides clues about how it formed and has been changing through time. We have studied the chemical evolution history of the Milky Way (MW) and Andromeda (M31)…
The Milky Way, an Exceptionally Quiet Galaxy: Implications for the Formation of Spiral Galaxies
- Physics
- 2007
We compare both the Milky Way and M31 galaxies to local external disk galaxies within the same mass range, using their locations in the planes drawn by Vflat versus MK (the Tully-Fisher relation),…
Abundance Gradients and the Formation of the Milky Way
- Physics
- 2001
In this paper we adopt a chemical evolution model, which is an improved version of the Chiappini, Matteucci, & Gratton model, assuming two main accretion episodes for the formation of the Galaxy, the…
Disk-Bulge-Halo Models for the Andromeda Galaxy
- Physics
- 2003
We present a suite of semianalytic disk-bulge-halo models for the Andromeda galaxy (M31) that satisfy three fundamental conditions: (1) internal self-consistency, (2) consistency with observational…
A simple model for the evolution of disc galaxies: the Milky Way
- Physics
- 2006
A simple model for the evolution of disc galaxies is presented. We adopt three numbers from observations of the Milky Way disc, � d the local surface mass density, r d the stellar scalelength (of the…
ORIGIN AND EVOLUTION OF THE ABUNDANCE GRADIENT ALONG THE MILKY WAY DISK
- Physics
- 2009
Based on a simple model of the chemical evolution of the Milky Way disk, we investigate the disk oxygen abundance gradient and its time evolution. Two star formation rates (SFRs) are considered, one…
Investigating the Andromeda stream — I. Simple analytic bulge—disc—halo model for M31
- Physics
- 2005
This paper is the first in a series which studies interactions between M31 and its satellites, including the origin of the giant southern stream. We construct accurate yet simple analytic models for…
The Mass of the Milky Way: Limits from a newly assembled set of halo objects
- Physics
- 2002
We set new limits on the mass of the Milky Way, making use of the latest kinematic information for Galactic satellites and halo objects. Our sample consists of 11 satellite galaxies, 137 globular…
The metallicity distribution of the halo and the satellites of the Milky Way in the hierarchical merging paradigm
- Physics
- 2008
Aims. To account for the observed differential metallicity distribution (DMD) of the Milky Way halo, a semi-analytical model is presented in the framework of the hierarchical merging paradigm for…
The Andromeda project - I. Deep HST-WFPC2 V, I photometry of 16 fields toward the disk and the halo of the M 31 galaxy. Probing the stellar content and metallicity distribution
- Physics
- 2003
We have obtained HST-WFPC2 F555W and F814W photometry for 16 fields in the vicinity of the luminous nearby spiral galaxy M 31, sampling the stellar content of the disk and the halo at different…