Modeling Asteroseismic Yields for the Roman Galactic Bulge Time-Domain Survey

Abstract

The Galactic Bulge Time Domain Survey (GBTDS) of the Roman Space Telescope will take high cadence data of the Galactic bulge. We investigate the asteroseismic potential of this survey for red giants. We simulate the detectability of global asteroseismic frequencies, ${\nu }_{\max }$ and $\Delta \nu$, by modify ing Kepler data to match nominal GBTDS observing strategies, considering different noise models, observing cadences, and detection algorithms. Our baseline case, using conservative assumptions, consistently leads to asteroseismic ${\nu }_{\max }$ detection probabilities above 80% for red clump and red giant branch stars brighter than 16th magnitude in Roman's F146 filter. We then inject these detection probabilities into a Galaxia model of the bulge to estimate asteroseismic yields. For our nominal case, we detect 290,000 stars in total, with 185,000 detections in the bulge. Different assumptions give bulge yields from 135,000 to 349,000 stars. For stars with measured ${\nu }_{\max }$, we find that we can recover $\Delta \nu$ in 21% to 42% of red clump stars, and 69% to 92% of RGB stars. Implications for survey strategy and asteroseismic population studies are discussed more.

arXiv commentApJ, in press

References in corpus (55)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Array Programming with NumPy
• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• Gaia Data Release 3: Summary of the content and survey properties
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• Evolution of asymptotic giant branch stars II. Optical to far-infrared isochrones with improved TP-AGB models
• Kepler Input Catalog: Photometric Calibration and Stellar Classification
• Modelling the Galactic Interstellar Extinction Distribution in Three Dimensions
• Chemical Cartography with APOGEE: Metallicity Distribution Functions and the Chemical Structure of the Milky Way Disk
• Asteroseismology of Solar-Type and Red-Giant Stars
• Kepler Asteroseismology Program: Introduction and First Results
• Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
• Galaxia: a code to generate a synthetic survey of the Milky Way
• The Second APOKASC Catalog: The Empirical Approach
• Calculating asteroseismic diagrams for solar-like oscillations
• Predictions of the WFIRST Microlensing Survey I: Bound Planet Detection Rates
• On Galactic density modeling in the presence of dust extinction
• Red giant masses and ages derived from carbon and nitrogen abundances
• Asteroseismic classification of stellar populations among 13000 red giants observed by Kepler
• Modelling the Galactic Bar Using Red Clump Giants
• The underlying physical meaning of the ${\nu }_{\max }-{\nu }_{\mathrm{c}}$ relation
• Dynamical heating across the Milky Way disc using APOGEE and $Gaia$
• Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars
• Spectroscopic determination of masses (and implied ages) for red giants
• Stellar population synthesis based modelling of the Milky Way using asteroseismology of 13000 Kepler red giants
• A Guide to Realistic Uncertainties on Fundamental Properties of Solar-Type Exoplanet Host Stars
• Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way
• Age dissection of the Milky Way discs: red giants in the Kepler field
• The Gaia-Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age
• Predicting the detectability of oscillations in solar-type stars observed by Kepler
• Amplitudes of Stellar Oscillations: The Implications for Asteroseismology
• Oscillating K giants with the WIRE satellite: determination of their asteroseismic masses
• The X-shaped Bulge of the Milky Way revealed by WISE
• The vertical motion history of disk stars throughout the Galaxy
• The K2 Galactic Archaeology Program Data Release 1: Asteroseismic results from Campaign 1
• APOKASC-3: The Third Joint Spectroscopic and Asteroseismic catalog for Evolved Stars in the Kepler Fields
• Deep Learning Classification in Asteroseismology Using an Improved Neural Network: Results on 15000 Kepler Red Giants and Applications to K2 and TESS Data
• The PLATO field selection process I. Identification and content of the long-pointing fields
• Unveiling the Distinct Formation Pathways of the Inner and Outer Discs of the Milky Way with Bayesian Machine Learning
• Period spacings in red giants; III. Coupling factors of mixed modes
• Evolution of the Exoplanet Size Distribution: Forming Large Super-Earths Over Billions of Years
• A Search for Red Giant Solar-like Oscillations in All Kepler Data
• On the orbits that generate the X-shape in the Milky Way bulge
• A prescription for the asteroseismic surface correction
• The Ages of Galactic Bulge Stars with Realistic Uncertainties
• A variational encoder-decoder approach to precise spectroscopic age estimation for large Galactic surveys
• Predicting radial-velocity jitter induced by stellar oscillations based on Kepler data
• Automated extraction of oscillation parameters for Kepler observations of solar-type stars
• Bolometric corrections of stellar oscillation amplitudes as observed by the Kepler, CoRoT, and TESS missions
• The far side of the Galactic bar/bulge revealed through semi-regular variables
• Vetting Asteroseismic $\Delta \nu$ Measurements using Neural Networks
• Testing the wavelength dependence of oscillations and granulation in red giants using Kepler and TESS

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• A Near-Infrared Extinction and Reddening Map Towards the Galactic Bulge Using UKIRT
• Towards Accurate Asteroseismic Masses for Luminous Giants
• The Two-infall Model Revisited: Constraints on Milky Way Bulge Assembly from >30,000 Galactic Chemical Evolution Models and Machine Learning