DA
Daniel Apai
astro-ph.EPastro-ph.SRastro-ph.IMastro-ph.GAastro-phAttitudeEvolution, PlanetaryExobiologyKnowledgephysics.geo-ph
On Valency
published · living versionsW_jrysjanm·v1 · currentpublished
A Model to Map Brown Dwarf Companions to White Dwarfs in Partial Secondary Eclipse
with Arthur D. Adams, Yifan Zhou, Daphne Broski-Laing, Sarah L. Casewell +7
1 version
W_jbs2xsrs·v1published
W_kuxfs3h5·v1published
W_7z7b88pt·v1published
W_x4ej2wk4·v1published
Preprints & journals
211 papers in the corpus · 2002–2026The Pandora SmallSat: Target Selection and Early Science2610.30028v1 · Emily A. Gilbert, Elisa V. Quintana, Jessie L. Dotson et al.2026 · 0 citationsarXivon Valency
The Pandora SmallSat: post-launch operations and mission update2610.30372v1 · Trevor O. Foote, Elisa V. Quintana, Jessie L. Dotson et al.2026 · 0 citationsarXiv
Deep HST/STIS Coronagraphic Imaging of the Pictoris Debris Disk: On the Scattered Light Component of the Cat's Tail2609.30111v1 · Arin M. Avsar, Kevin Wagner, Daniel Apai et al.2026 · 0 citationsarXiv
Super-Earth Interiors Shrink by About 10% as They Crystallise2609.23091v1 · Tim Lichtenberg, Mara Attia, Harrison Nicholls et al.2026 · 0 citationsarXiv
Multi-Epoch Stability in the Rotational Modulation of the Planetary-Mass Companion Ross 458C2609.22072v1 · Elena Manjavacas, Jared Bull, Paulo Miles-Paez et al.2026 · 0 citationsarXiv
Water Cloud and Chemical Modulations in the Coldest Brown Dwarf2609.20664v1 · Brittany E. Miles, James Mang, Caroline V. Morley et al.2026 · 0 citationsarXiv
A Grid of Contribution Functions to Help the Interpretation of Time-resolved Observations of Brown Dwarfs2609.19339v1 · Myrla Phillippe, Theodora Karalidi, Elena Manjavacas et al.2026 · 0 citationsarXiv
Small-Body Science with the Nautilus Space Observatory: From Cislunar Space Resilience to Mapping the Kuiper-Belt-to-Oort-Cloud Transition2609.10663v1 · J. de Wit, A. Y. Burdanov, P. McGill et al.2026 · 0 citationsarXiv
Upgrading LBTI/NOMIC with a quadruple annular groove phase mask and GeoSnap detector for imaging nearby, habitable-zone exoplanets2607.28562v2 · Kevin Wagner, Manny Montoya, Steve Ertel et al.2026 · 0 citationsarXiv
When Stabilizing Feedbacks Wreak Havoc in Habitable Planets: Chaos at the Freezing Point in a Four-Feedback Climate Model2607.12972v1 · Chaucer Langbert, D'aniel Apai, Renu Malhotra2026 · 0 citationsarXiv
The Interstellar Laser Beacons Hypothesis and the Cosmic Lighthouses Project2607.12106v1 · Daniel Apai, Chia-Lung Lin, Kevin Wagner2026 · 0 citationsarXiv
Nautilus Space Observatory: Unveiling the Diversity and Origin of Sub-Neptunes with the Nautilus Space Observatory2607.00268v1 · Luis Welbanks, Kylie E. Hall, Julien de Wit et al.2026 · 0 citationsarXiv
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 binary2606.30112v2 · Daphne Broski-Laing, Yifan Zhou, Joshua D. Lothringer et al.2026 · 0 citationsThe Astrophysical Journal, Volume 1009, Issue 2, id.177, 26 pp. (2026)
Mapping Stellar Heterogeneities with the Nautilus Space Observatory2606.30706v1 · Adina D. Feinstein, Jeff Valenti, Julien de Wit et al.2026 · 0 citationsarXiv
A Scalable Path to Astrometric Exomoon Discoveries with the Nautilus Space Observatory2606.28523v2 · Kevin Wagner, Sumin Seung, D'aniel Apai et al.2026 · 0 citationsarXiv
Nautilus Space Observatory: The Evolution of Planets and their Atmospheres2606.26214v1 · Ilaria Pascucci, Noah Tuchow, Yifan Zhou et al.2026 · 0 citationsarXiv
Nautilus: Fast Time-Resolved Spectroscopy of GKM Stellar Flares and Their Implications for Planetary Habitability2606.26462v1 · Chia-Lung Lin, Adina D. Feinstein, Jeff Valenti et al.2026 · 0 citationsarXiv
Direct Imaging Discovery of Giant Exoplanet Pictoris d: A Decade-Long Game of Hide-and-Seek2606.23801v2 · Ben J. Sutlieff, Markus J. Bonse, Valentin Christiaens et al.2026 · 3 citationsApJL 1006 L10 (2026)
A single power law for the TRAPPIST-1 flare distribution across four orders of magnitude in energy2605.05468v2 · Valeriy Vasilyev, Alexander I. Shapiro, Nadiia Kostogryz et al.2026 · 0 citationsarXiv
Unlocking HST's Stellar Treasure Trove: Stellar Activity Minima for HAT-P-11 Offer Prime Windows for Transmission Spectroscopy2603.24585v2 · Prajwal Niraula, Benjamin V. Rackham, Julien de Wit et al.2026 · 0 citationsarXiv
Forecasting Catastrophe: Constraints on the Fomalhaut Main Belt Planetesimal Population from Observed Collisional Remnants2603.07376v1 · Arin M. Avsar, Kevin Wagner, D'aniel Apai et al.2026 · 0 citationsarXiv
NASA's Pandora SmallSat Mission: Simulated Modeling and Retrieval of Near-Infrared Exoplanet Transmission Spectra2603.04488v1 · Yoav Rotman, Peter McGill, Luis Welbanks et al.2026 · 3 citationsarXiv
NASA's Pandora SmallSat Mission: Simulating the Impact of Stellar Photospheric Heterogeneity and Its Correction2603.04519v2 · Benjamin V. Rackham, Aishwarya R. Iyer, D'aniel Apai et al.2026 · 2 citationsarXiv
Not Earth-like Yet Temperate? More Generic Climate Feedback Configurations Still Allow Temperate Climates in Habitable Zone Exo-Earth Candidates2602.10369v1 · Chaucer Langbert, D'aniel Apai2026 · 1 citationarXiv
JWST imaging of omega Centauri: II. Evidence for a split white dwarf cooling sequence in the near-infrared2510.08715v1 · M. Scalco, M. Salaris, L. R. Bedin et al.2025 · 0 citationsarXiv
Characterizing the Time Variability of 2M1207 A+b with JWST NIRSpec/PRISM2509.13544v1 · Arthur D. Adams, Yifan Zhou, Gabriel Dominique-Marleau et al.2025 · 3 citationsarXiv
Bioverse: Assessing the Ability of Direct Imaging Surveys to Empirically Constrain the Habitable Zone via Trends in Albedo2509.07297v1 · Noah W. Tuchow, Christopher C. Stark, Daniel Apai et al.2025 · 1 citationarXiv
JWST imaging of omega Centauri -- I. Luminosity and mass functions of its main sequence populations2508.00069v1 · M. Scalco, R. Gerasimov, L. R. Bedin et al.2025 · 1 citationarXiv
JWST Imaging of the Closest Globular Clusters -- VI. The Lowest-Mass Objects in M 4 and the Galactic Bulge2507.13564v1 · L. R. Bedin, R. Gerasimov, A. Calamida et al.2025 · 1 citationarXiv
A Terminology and Quantitative Framework for Assessing the Habitability of Solar System and Extraterrestrial Worlds2505.22808v1 · Daniel Apai, Rory Barnes, Matthew M. Murphy et al.2025 · 2 citationsarXiv
Bioverse: Potentially Observable Exoplanet Biosignature Patterns Under the UV Threshold Hypothesis for the Origin of Life2504.04261v1 · Martin Schlecker, D'aniel Apai, Antonin Affholder et al.2025 · 1 citationarXiv
Three Years of High-Contrast Imaging of the PDS 70 b and c Exoplanets at H{\alpha} with MagAO-X: Evidence of Strong Protoplanet H{\alpha} Variability and Circumplanetary Dust2502.14038v1 · Laird M. Close, Jared R. Males, Jialin Li et al.2025 · 25 citationsAJ 169 35 (2025)
Orbital Modeling of HII 1348B: An Eccentric Young Substellar Companion in the Pleiades2501.16429v1 · Gabriel Weible, Kevin Wagner, Jordan Stone et al.2025 · 5 citationsThe Astronomical Journal, 169:197 (21pp), 2025 April
JWST Imaging of the Closest Globular Clusters -- V. The White Dwarfs Cooling Sequence of M42501.10070v1 · L. R. Bedin, M. Libralato, M. Salaris et al.2025 · 7 citationsarXiv
Phase-resolved Hubble Space Telescope WFC3 Spectroscopy of Weakly-Irradiated Brown Dwarf GD 1400 and Energy Redistribution-Irradiation Trends in Six WDBD Binaries2501.05609v1 · Rachael C. Amaro, D'aniel Apai, Yifan Zhou et al.2025 · 3 citationsarXiv
Protosolar D-to-H abundance and one part-per-billion PH in the coldest brown dwarf2411.14541v2 · Melanie J. Rowland, Caroline V. Morley, Brittany E. Miles et al.2024 · 25 citationsarXiv
The Polar Vortex Hypothesis: Evolving, Spectrally Distinct Polar Regions Explain Short- and Long-term Light Curve Evolution and Color-Inclination Trends in Brown Dwarfs and Giant Exoplanets2410.05537v1 · Nguyen Fuda, D'aniel Apai2024 · 3 citationsarXiv
JWST imaging of the closest globular clusters -- IV. Chemistry, luminosity, and mass functions of the lowest-mass members in the NIRISS parallel fields2409.06774v1 · M. Libralato, R. Gerasimov, L. Bedin et al.2024 · 2 citationsarXiv
The only inflated brown dwarf in an eclipsing white dwarf-brown dwarf binary: WD1032+011B2409.06874v1 · Jenni R. French, Sarah L. Casewell, Rachael C. Amaro et al.2024 · 6 citationsarXiv
The HST Large Programme on Omega Centauri -- VII. The white dwarf cooling sequence2409.04533v1 · M. Scalco, M. Salaris, L. Bedin et al.2024 · 0 citationsarXiv
Scalable, Advanced Machine Learning-based Approaches for Stellar Flare Identification: Application to TESS short-cadence Data and Analysis of a New Flare Catalogue2409.02540v2 · Chia-Lung Lin, Daniel Apai, Mark S. Giampapa et al.2024 · 0 citationsarXiv
A Search for Collisions and Planet-Disk Interactions in the Beta Pictoris Disk with 26 Years of High Precision HST/STIS Imaging2408.12351v1 · Arin M. Avsar, Kevin Wagner, D'aniel Apai et al.2024 · 4 citationsarXiv
An Analytic Characterization of the Limb Asymmetry -- Transit Time Degeneracy2407.17564v2 · Matthew M. Murphy, Thomas G. Beatty, Daniel Apai2024 · 6 citationsApJ 974 179 (2024)
Challenge of direct imaging of exoplanets within structures: disentangling real signal from point source from background light2407.13756v1 · Jialin Li, Laird M. Close, Jared R. Males et al.2024 · 2 citationsarXiv
Sensitivity and Performance of LBTI/NOMIC Spectroscopy: Prospects for 10- and 30-meter class Mid-IR Exoplanet Science2407.03620v1 · Brittany E. Miles, Steve Ertel, Kevin Wagner et al.2024 · 0 citationsarXiv
Interior convection regime, host star luminosity, and predicted atmospheric CO2 abundance in terrestrial exoplanets2406.16104v2 · Antonin Affholder, St'ephane Mazevet, Boris Sauterey et al.2024 · 6 citationsarXiv
Bioverse: GMT and ELT Direct Imaging and High-Resolution Spectroscopy Assessment $\unicode{x2013}$ Surveying Exo-Earth O and Testing the Habitable Zone Oxygen Hypothesis2405.11423v2 · Kevin K. Hardegree-Ullman, D'aniel Apai, Sebastiaan Y. Haffert et al.2024 · 0 citationsarXiv
JWST Imaging of the Closest Globular Clusters -- I. Possible Infrared Excess Among White Dwarfs in NGC 63972405.01631v1 · L. R. Bedin, D. Nardiello, M. Salaris et al.2024 · 12 citationsarXiv
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 Limit2405.01634v2 · Roman Gerasimov, Luigi R. Bedin, Adam J. Burgasser et al.2024 · 15 citationsarXiv
JWST Imaging of the Closest Globular Clusters -- III. Multiple Populations along the low-mass Main Sequence stars of NGC 63972405.01635v2 · M. Scalco, M. Libralato, R. Gerasimov et al.2024 · 0 citationsarXiv
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