$\Lambda$CDM Predictions for the Satellite Population of M33

Abstract

Triangulum (M33) is the most massive satellite galaxy of Andromeda (M31), with a stellar mass of about $3\times 10^9{M}_{\odot }$. Based on abundance matching techniques, M33's total mass at infall is estimated to be of order $10^{11}{M}_{\odot }$. $\Lambda$CDM simulations predict that M33-mass halos host several of their own low mass satellite companions, yet only one candidate M33 satellite has been detected in deep photometric surveys to date. This `satellites of satellites' hierarchy has recently been explored in the context of the dwarf galaxies discovered around the Milky Way's Magellanic Clouds in the Dark Energy Survey. Here we discuss the number of satellite galaxies predicted to reside within the virial radius ($\sim$160 kpc) of M33 based on $\Lambda$CDM simulations. We also calculate the expected number of satellite detections in N fields of data using various ground--based imagers. Finally, we discuss how these satellite population predictions change as a function of M33's past orbital history. If M33 is on its first infall into M31's halo, its proposed satellites are expected to remain bound to M33 today. However, if M33 experienced a recent tidal interaction with M31, the number of surviving satellites depends strongly on the distance achieved at pericenter due to the effects of tidal stripping. We conclude that a survey extending to $\sim$100 kpc around M33 would be sufficient to constrain its orbital history and a majority of its satellite population. In the era of WFIRST, surveys of this size will be considered small observing programs.

arXiv comment15 pages, 3 figures, submitted to MNRAS

References in corpus (108)

• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• Gaia Data Release 2. Summary of the contents and survey properties
• The Structure of Cold Dark Matter Halos
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Planck 2013 results. XVI. Cosmological parameters
• The cosmological simulation code GADGET-2
• Dark Matter Substructure in Galactic Halos
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• The Average Star Formation Histories of Galaxies in Dark Matter Halos from z=0-8
• The observed properties of dwarf galaxies in and around the Local Group
• Small-Scale Challenges to the $\Lambda$CDM Paradigm
• The Rockstar Phase-Space Temporal Halo Finder and the Velocity Offsets of Cluster Cores
• Galactic star formation and accretion histories from matching galaxies to dark matter haloes
• Properties of galaxies reproduced by a hydrodynamic simulation
• The Cosmic Baryon Budget
• From dwarf spheroidals to cDs: Simulating the galaxy population in a LCDM cosmology
• Substructures in hydrodynamical cluster simulations
• A Comprehensive Analysis of Uncertainties Affecting the Stellar Mass - Halo Mass Relation for 0<z<4
• The Dark Side of the Halo Occupation Distribution
• The Universal Stellar Mass-Stellar Metallicity Relation for Dwarf Galaxies
• The merger rate of galaxies in the Illustris Simulation: a comparison with observations and semi-empirical models
• How do galaxies populate Dark Matter halos?
• Galaxy halo masses and satellite fractions from galaxy-galaxy lensing in the SDSS: stellar mass, luminosity, morphology, and environment dependencies
• The subhalo populations of LCDM dark haloes
• Reconciling dwarf galaxies with LCDM cosmology: Simulating a realistic population of satellites around a Milky Way-mass galaxy
• The remnants of galaxy formation from a panoramic survey of the region around M31
• Gravitationally Consistent Halo Catalogs and Merger Trees for Precision Cosmology
• Eight New Milky Way Companions Discovered in First-Year Dark Energy Survey Data
• Are the Magellanic Clouds on their First Passage about the Milky Way?
• Beasts of the Southern Wild: Discovery of nine Ultra Faint satellites in the vicinity of the Magellanic Clouds
• Updated Nearby Galaxy Catalog
• Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey
• The Illustris Simulation: Public Data Release
• Third-Epoch Magellanic Cloud Proper Motions I: HST/WFC3 data and Orbit Implications
• Hundreds of Milky Way Satellites? Luminosity Bias in the Satellite Luminosity Function
• The Extended Rotation Curve and the Dark Matter Halo of M33
• The Role of Dwarf Galaxy Interactions in Shaping the Magellanic System and Implications for Magellanic Irregulars
• Not so lumpy after all: modeling the depletion of dark matter subhalos by Milky Way-like galaxies
• ELVIS: Exploring the Local Volume in Simulations
• Why Baryons Matter: The Kinematics of Dwarf Spheroidal Satellites
• Disruption of Dark Matter Substructure: Fact or Fiction?
• Galaxies in LCDM with Halo Abundance Matching: luminosity-velocity relation, baryonic mass-velocity relation, velocity function and clustering
• The splashback radius as a physical halo boundary and the growth of halo mass
• Third-Epoch Magellanic Cloud Proper Motions II: The Large Magellanic Cloud Rotation Field in Three Dimensions
• The M31 Velocity Vector. II. Radial Orbit Towards the Milky Way and Implied Local Group Mass
• Dark matter and visible baryons in M33
• The Missing Massive Satellites of the Milky Way
• Taking measure of the Andromeda halo: a kinematic analysis of the giant stream surrounding M31
• Evidence for an accretion origin for the outer halo globular cluster system of M31
• The SPLASH Survey: Spectroscopy of 15 M31 Dwarf Spheroidal Satellite Galaxies
• Andromeda IX: A New Dwarf Spheroidal Satellite of M31
• A Magellanic Origin of the DES Dwarfs
• Scaling Relations and the Fundamental Line of the Local Group Dwarf Galaxies
• The PAndAS view of the Andromeda satellite system - II. Detailed properties of 23 M31 dwarf spheroidal galaxies
• Hydra II: a faint and compact Milky Way dwarf galaxy found in the Survey of the Magellanic Stellar History
• PAndAS' cubs: discovery of two new dwarf galaxies in the surroundings of the Andromeda and Triangulum galaxies
• The Geometric Distance and Proper Motion of the Triangulum Galaxy (M33)
• Ram Pressure Stripping of the Large Magellanic Cloud's Disk as a Probe of the Milky Way's Circumgalactic Medium
• SMASH - Survey of the MAgellanic Stellar History
• Horologium II: a Second Ultra-faint Milky Way Satellite in the Horologium Constellation
• Organized Chaos: Scatter in the relation between stellar mass and halo mass in small galaxies
• Small-Scale Structure in the SDSS and LCDM: Isolated L* Galaxies with Bright Satellites
• Discovery of two neighboring satellites in the Carina constellation with MagLiteS
• The Disruption and Fueling of M33
• A warped disk model for M33 and the 21-cm line width in spiral galaxies
• The M31 Velocity Vector. I. Hubble Space Telescope Proper Motion Measurements
• A theoretical framework for combining techniques that probe the link between galaxies and dark matter
• Orbits of Massive Satellite Galaxies: I. A Close Look at the Large Magellanic Cloud and a New Orbital History for M33
• Shaken and Stirred: The Milky Way's Dark Substructures
• M31 Transverse Velocity and Local Group Mass from Satellite Kinematics
• The outer halo globular cluster system of M31 - I. The final PAndAS catalogue
• The Caterpillar Project: A Large Suite of Milky Way Sized Halos
• A Hero's Dark Horse: Discovery of an Ultra-Faint Milky Way Satellite in Pegasus
• The M31 Velocity Vector. III. Future Milky Way-M31-M33 Orbital Evolution, Merging, and Fate of the Sun
• Satellite Dwarf Galaxies in a Hierarchical Universe: The Prevalence of Dwarf-Dwarf Major Mergers
• Andromeda X, A New Dwarf Spheroidal Satellite of M31: Photometry
• Investigating the Andromeda Stream: II. Orbital Fits and Properties of the Progenitor
• Andromeda Dwarfs in Light of MOND. II. Testing Prior Predictions
• First results from the MADCASH Survey: A Faint Dwarf Galaxy Companion to the Low Mass Spiral Galaxy NGC 2403 at 3.2 Mpc
• The stellar-to-halo mass relation for Local Group galaxies
• Determining the Location of the Tip of the Red Giant Branch in Old Stellar Populations: M33, Andromeda I & II
• Dynamics of the Magellanic Clouds in a LCDM Universe
• The Baryon Fractions and Mass-to-Light Ratios of Early-Type Galaxies
• An Ultra-Faint Galaxy Candidate Discovered in Early Data from the Magellanic Satellites Survey
• The satellites of the Milky Way - Insights from semi-analytic modelling in a LambdaCDM cosmology
• Satellites and Haloes of Dwarf Galaxies
• The predicted luminous satellite populations around SMC and LMC-mass galaxies - A missing satellite problem around the LMC?
• Dynamics and Stellar Content of the Giant Southern Stream in M31. II. Interpretation
• The Formation of the Local Group Planes of Galaxies
• Clues to the "Magellanic Galaxy" from Cosmological Simulations
• Constraining the orbital history of the Magellanic Clouds: A new bound scenario suggested by the tidal origin of the Magellanic Stream
• The stellar-subhalo mass relation of satellite galaxies
• Dynamical signatures of a LCDM-halo and the distribution of the baryons in M33
• A New Distance to M33 Using Blue Supergiants and the FGLR Method
• Galaxy And Mass Assembly (GAMA): In Search of Milky-Way Magellanic Cloud Analogues
• From Galaxy Clusters to Ultra-Faint Dwarf Spheroidals: A Fundamental Curve Connecting Dispersion-supported Galaxies to Their Dark Matter Halos
• Low-mass galaxy assembly in simulations: regulation of early star formation by radiation from massive stars
• The Orbital Ellipticity of Satellite Galaxies and the Mass of the Milky Way
• An observer's guide to the (Local Group) dwarf galaxies: predictions for their own dwarf satellite populations
• The Transverse velocity of the Andromeda system, derived from the M31 satellite population
• Simulations of the flocculent spiral M33: what drives the spiral structure?
• Stellar mass-gap as a probe of halo assembly history and concentration: youth hidden among old fossils
• Photometric Properties of the M33 Star Cluster System
• The M33 Globular Cluster System with PAndAS Data: The Last Outer Halo Cluster?
• Substructure and Tidal Streams in the Andromeda Galaxy and its Satellites
• Dynamics in the satellite system of Triangulum: Is AndXXII a dwarf satellite of M33?
• Dark influences III. Structural characterization of minor mergers of dwarf galaxies with dark satellites

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• The large-scale structure of the halo of the Andromeda galaxy II. Hierarchical structure in the Pan-Andromeda Archaeological Survey
• The Orbital Histories of Magellanic Satellites Using Gaia DR2 Proper Motions
• First Gaia Dynamics of the Andromeda System: DR2 Proper Motions, Orbits, and Rotation of M31 and M33
• The Hubble Space Telescope Survey of M31 Satellite Galaxies I. RR Lyrae-based Distances and Refined 3D Geometric Structure
• Dancing in the Dark: Uncertainty in ultra-faint dwarf galaxy predictions from cosmological simulations
• The infall of dwarf satellite galaxies are influenced by their host's massive accretions
• Barred spiral galaxies in modified gravity theories
• The Hough Stream Spotter: A New Method for Detecting Linear Structure in Resolved Stars and Application to the Stellar Halo of M31
• The abundance of dwarf galaxies around low-mass giants in the Local Volume
• The Triangulum Extended (TREX) Survey: The Stellar Disk Dynamics of M33 as a Function of Stellar Age
• The M31/M33 tidal interaction: A hydrodynamic simulation of the extended gas distribution
• The Tucana dwarf spheroidal: a distant backsplash galaxy of M31?
• Dancing in the void: hydrodynamical N-body simulations of the extremely metal poor galaxy DDO 68
• Apocalypse When? No Certainty of a Milky Way -- Andromeda Collision
• Searching for Conformity Across Cosmic Time with Local Group and Local Volume Star Formation Histories
• The outskirts of M33: Tidally induced distortions versus signatures of gas accretion
• Line-of-sight mass estimator and the masses of the Milky Way and Andromeda Galaxy
• Molecular cloud matching in CO and dust in M33 II. Physical properties of giant molecular clouds
• Pisces VII: Discovery of a possible satellite of Messier 33 in the DESI Legacy Imaging Surveys