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Daniel Apai

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Professor

University of Arizona

United States

Research Interests

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Recent Grants

Grant: Close

ALIEN EARTHS: WHICH NEARBY PLANETARY SYSTEMS ARE LIKELY TO HOST HABITABLE PLANETS AND LIFE?

Open Date: 2021-05-01

Close Date: 2026-04-01

Grant: Close

A BAYESIAN APPROACH TO THE IDENTIFICATION OF HABITABLE PLANETS AND BIOSIGNATURES IN IMAGING DATA

Open Date: 2017-09-01

Close Date: 2021-06-30

Grant: Close

EARTHS IN OTHER SOLAR SYSTEMS: TOWARD FORMING AND DISCOVERING PLANETS WITH BIOCRITICAL INGREDIENTS

Open Date: 2015-02-01

Close Date: 2022-02-01

Articles (39)

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Collaborators (28)

Katherine Follette

Associate Professor

Amherst College

UNITED STATES

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Kevin Hardegree-Ullman

Staff Scientist

California Institute of Technology

UNITED STATES

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Julien de Wit

Massachusetts Institute of Technology

UNITED STATES

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Sebastiaan Haffert

Assistant Professor

Leiden University

NETHERLANDS

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Sukrit Ranjan

Assistant Professor

University of Arizona

UNITED STATES

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Laura M Perez

profesor/a

Universidad de Chile

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Laura Mayorga

Johns Hopkins University Applied Physics Laboratory

UNITED STATES

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Xianyu Tan

Associate Professor

Shanghai Jiao Tong University

CHINA

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Arnaud Salvador

Junior Professor

Institut de Physique du Globe de Paris

FRANCE

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Gabriel-Dominique Marleau

Max-Planck-Institut für Astronomie

GERMANY

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Jonas Syed

Max-Planck-Institut für Astronomie

GERMANY

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Alexander Shapiro

Full professor

Max-Planck-Institut für Kohlenforschung

GERMANY

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Tim Lichtenberg

Scientific Staff, Assistant Professor, Universitair docent

University of Groningen

NETHERLANDS

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Renu Malhotra

Professor

University of Arizona

UNITED STATES

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Baptiste Journaux

Assistant Professor

University of Washington

UNITED STATES

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Nadiia Kostogryz

Max Planck Institute for Solar System Research

GERMANY

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Theodora Karalidi

Assistant Professor

University of Central Florida

UNITED STATES

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Alycia Weinberger

Staff Scientist

Carnegie Institution for Science

UNITED STATES

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Rory Barnes

Associate Professor

University of Washington

UNITED STATES

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Johanna Vos

Associate Professor and Royal Society - Research Ireland University Research Fellow

Trinity College Dublin

IRELAND

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Luis Welbanks

Assistant Professor

Arizona State University

UNITED STATES

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Kevin Wagner

University of Arizona

UNITED STATES

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Yifan Zhou

Assistant Professor

University of Virginia

UNITED STATES

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Daniella Bardalez Gagliuffi

Assistant Professor

Amherst College

UNITED STATES

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Andras Gaspar

Associate Research Professor

University of Arizona

UNITED STATES

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Ilaria Pascucci

University of Arizona

UNITED STATES

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Brett M Morris

Senior Astronomical Data Scientist

Space Telescope Science Institute

UNITED STATES

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Laird Close

Professor

University of Arizona

UNITED STATES

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Daniel Apai

Research Interests

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Recent Grants

Articles (39)

A Single Power Law for the TRAPPIST-1 Flare Distribution across 4 Orders of Magnitude in Energy

When Stabilizing Feedbacks Wreak Havoc in Habitable Planets: Chaos at the Freezing Point in a Four-feedback Climate Model

NASA’s Pandora SmallSat Mission: Simulating the Impact of Stellar Photospheric Heterogeneity and Its Correction

Deep HST/STIS Coronagraphic Imaging of the β Pictoris Debris Disk: On the Scattered Light Component of the Cat’s Tail

Forecasting Catastrophe: Constraints on the Fomalhaut Main-belt Planetesimal Population from Observed Collisional Remnants

A Grid of Contribution Functions to Help the Interpretation of Time-resolved Observations of Brown Dwarfs

Asymmetric Nightside CO2 Features, Inefficient Heat Transport, and Precise Evolutionary Constraints: Spectroscopic Phase Curves Reveal the Past and Present of a White Dwarf–Brown Dwarf Binary

Unlocking HST’s Stellar Treasure Trove: Stellar Activity Minima for HAT-P-11 Offer Prime Windows for Transmission Spectroscopy

NASA’s Pandora SmallSat Mission: Simulated Modeling and Retrieval of Near-infrared Exoplanet Transmission Spectra

Not Earth-like yet Temperate? More Generic Climate Feedback Configurations Still Allow Temperate Climates in Habitable Zone Exo-Earth Candidates

Bioverse: Potentially Observable Exoplanet Biosignature Patterns under the UV Threshold Hypothesis for the Origin of Life

Phase-resolved Hubble Space Telescope WFC3 Spectroscopy of the Weakly Irradiated Brown Dwarf GD 1400 and Energy Redistribution–Irradiation Trends in Six White Dwarf–Brown Dwarf Binaries

Three Years of High-contrast Imaging of the PDS 70 b and c Exoplanets at Hα with MagAO-X: Evidence of Strong Protoplanet Hα Variability and Circumplanetary Dust

Bioverse: Giant Magellan Telescope and Extremely Large Telescope Direct Imaging and High-resolution Spectroscopy Assessment—Surveying Exo-Earth O2 and Testing the Habitable Zone Oxygen Hypothesis

Characterizing the Time Variability of 2M1207 A + b with JWST NIRSpec/PRISM

A Terminology and Quantitative Framework for Assessing the Habitability of Solar System and Extraterrestrial Worlds

Orbital and Atmospheric Modeling of H ii 1348B: An Eccentric Young Substellar Companion in the Pleiades

Bioverse: Assessing the Ability of Direct Imaging Surveys to Empirically Constrain the Habitable Zone via Trends in Albedo

Interior Convection Regime, Host Star Luminosity, and Predicted Atmospheric CO2 Abundance in Terrestrial Exoplanets

Atmospheric Retrievals of the Phase-resolved Spectra of Irradiated Brown Dwarfs WD-0137B and EPIC-2122B

Time-resolved Hubble Space Telescope Wide Field Camera 3 Spectrophotometry Reveals Inefficient Day-to-night Heat Redistribution in the Highly Irradiated Brown Dwarf SDSS 1557B

Bioverse: The Habitable Zone Inner Edge Discontinuity as an Imprint of Runaway Greenhouse Climates on Exoplanet Demographics

Statistical Distribution Function of Orbital Spacings in Planetary Systems

JWST imaging of the closest globular clusters

JWST Imaging of the Closest Globular Clusters. II. Discovery of Brown Dwarfs in NGC 6397 and Measurement of Age from the Brown Dwarf Cooling Sequence, Using SANDee—A New Grid of Model Isochrones across the Hydrogen-burning Limit

JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397

Latitude-dependent Atmospheric Waves and Long-period Modulations in Luhman 16 B from the Longest Light Curve of an Extrasolar World

Cover Picture: Astron. Nachr. 1/2024

HST astrometry of the closest brown dwarfs‐II. Improved parameters and constraints on a third body

Bioverse: A Comprehensive Assessment of the Capabilities of Extremely Large Telescopes to Probe Earth-like O2 Levels in Nearby Transiting Habitable-zone Exoplanets

Hotter than Expected: Hubble Space Telescope (HST)/WFC3 Phase-resolved Spectroscopy of a Rare Irradiated Brown Dwarf with Strong Internal Heat Flux

EDEN Survey: Small Transiting Planet Detection Limits and Constraints on the Occurrence Rates of Planets around Late-M Dwarfs within 15 pc

Informed Systematic Method to Identify Variable Mid- and Late-T Dwarfs

The Scorpion Planet Survey: Wide-orbit Giant Planets Around Young A-type Stars

An Integrative Analysis of the HD 219134 Planetary System and the Inner solar system: Extending DYNAMITE with Enhanced Orbital Dynamical Stability Criteria

Roaring Storms in the Planetary-mass Companion VHS 1256-1257 b: Hubble Space Telescope Multiepoch Monitoring Reveals Vigorous Evolution in an Ultracool Atmosphere

Prediction of an Earth-sized Planet Formed in the Habitable Zone of the SPECULOOS-2 System

ACCESS: Tentative Detection of H2O in the Ground-based Optical Transmission Spectrum of the Low-density Hot Saturn HATS-5b

An Integrative Analysis of the Rich Planetary System of the Nearby Star e Eridani: Ideal Targets for Exoplanet Imaging and Biosignature Searches

Collaborators (28)

Katherine Follette

Kevin Hardegree-Ullman

Julien de Wit

Sebastiaan Haffert

Sukrit Ranjan

Laura M Perez

Laura Mayorga

Xianyu Tan

Arnaud Salvador

Gabriel-Dominique Marleau

Jonas Syed

Alexander Shapiro

Tim Lichtenberg

Renu Malhotra

Baptiste Journaux

Nadiia Kostogryz

Theodora Karalidi

Alycia Weinberger

Rory Barnes

Johanna Vos

Luis Welbanks

Kevin Wagner

Yifan Zhou

Daniella Bardalez Gagliuffi

Andras Gaspar

Ilaria Pascucci

Brett M Morris

Laird Close

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