Search Results - "Sanghi, Aniket"
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The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
Published in The Astrophysical journal (01-08-2022)“…Abstract The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed…”
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The Hawaii Infrared Parallax Program. VI. The Fundamental Properties of 1000+ Ultracool Dwarfs and Planetary-mass Objects Using Optical to Mid-infrared Spectral Energy Distributions and Comparison to BT-Settl and ATMO 2020 Model Atmospheres
Published in The Astrophysical journal (01-12-2023)“…Abstract We derive the bolometric luminosities ( L bol ) of 865 field-age and 189 young ultracool dwarfs (spectral types M6–T9, including 40 new discoveries…”
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3
A Volume-limited Sample of Ultracool Dwarfs. II. The Substellar Age and Mass Functions in the Solar Neighborhood
Published in The Astrophysical journal (01-06-2024)“…Abstract We present the most precise constraints to date for the mass and age distributions of single ultracool dwarfs in the solar neighborhood, based on an…”
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4
Efficiently Searching for Close-in Companions Around Young M Dwarfs Using a Multiyear PSF Library
Published in The Astronomical journal (01-11-2024)“…Abstract We present Super-RDI, a unique framework for the application of reference star differential imaging (RDI) to Keck/NIRC2 high-contrast imaging…”
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5
Astrometric Accelerations as Dynamical Beacons: Discovery and Characterization of HIP 21152 B, the First T-dwarf Companion in the Hyades
Published in The Astronomical journal (01-02-2023)“…Abstract Benchmark brown dwarf companions with well-determined ages and model-independent masses are powerful tools to test substellar evolutionary models and…”
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Validation of Elemental and Isotopic Abundances in Late-M Spectral Types with the Benchmark HIP 55507 AB System
Published in The Astrophysical journal (01-02-2024)“…Abstract M dwarfs are common host stars to exoplanets but often lack atmospheric abundance measurements. Late-M dwarfs are also good analogs to the youngest…”
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Astrometric Accelerations as Dynamical Beacons: A Giant Planet Imaged inside the Debris Disk of the Young Star AF Lep
Published in Astrophysical journal. Letters (01-06-2023)“…Abstract We present the direct-imaging discovery of a giant planet orbiting the young star AF Lep, a 1.2 M ⊙ member of the 24 ± 3 Myr β Pic moving group. AF…”
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UV-optical Emission of AB Aur b Is Consistent with Scattered Stellar Light
Published in The Astronomical journal (01-12-2023)“…Abstract The proposed protoplanet AB Aur b is a spatially concentrated emission source imaged in the millimeter-wavelength disk gap of the Herbig Ae/Be star AB…”
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9
JWST/NIRCam 4–5 μm Imaging of the Giant Planet AF Lep b
Published in Astrophysical journal. Letters (01-10-2024)“…Abstract With a dynamical mass of 3 M Jup , the recently discovered giant planet AF Lep b is the lowest-mass imaged planet with a direct mass measurement. Its…”
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Efficiently Imaging Accreting Protoplanets from Space: Reference Star Differential Imaging of the PDS 70 Planetary System Using the HST/WFC3 Archival PSF Library
Published in The Astronomical journal (01-03-2022)“…Abstract Accreting protoplanets provide key insights into how planets assemble from their natal protoplanetary disks. Recently, Zhou et al. (2021) used angular…”
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Astrometric Accelerations as Dynamical Beacons: Discovery and Characterization of HIP 21152 B, the First T-dwarf Companion in the Hyades Based in part on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan
Published in The Astronomical journal (01-02-2023)Get full text
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On the masses, age, and architecture of the VHS J1256−1257AB b system
Published in Monthly notices of the Royal Astronomical Society (01-02-2023)“…ABSTRACT VHS J1256−1257 AB is an ultracool dwarf binary that hosts a wide-separation planetary-mass companion that is a key target of the JWST Exoplanet Early…”
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13
HST/WFC3 Hα Direct-imaging Detection of a Pointlike Source in the Disk Cavity of AB Aur
Published in Astrophysical journal. Letters (01-07-2022)“…Abstract Accreting protoplanets enable the direct characterization of planet formation. As part of a high-contrast imaging search for accreting planets with…”
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14
Efficiently Imaging Accreting Protoplanets from Space: Reference Star Differential Imaging of the PDS 70 Planetary System using the HST/WFC3 Archival PSF Library
Published 20-12-2021“…Accreting protoplanets provide key insights into how planets assemble from their natal protoplanetary disks. Recently, Zhou et al. (2021) used angular…”
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15
Estimating Photometric Distances to Ultracool Dwarfs in Next Generation Space-based Infrared Surveys: Synthetic Photometry and New Absolute Magnitude Versus Spectral Type Relations for JWST, Euclid, and Roman Filters
Published 17-05-2024“…We synthesize JWST NIRCam photometry for the F164N, F187N, F212N narrow filters, F140M, F162M, F182M, F210M medium filters, and F115W, F150W, F200W wide…”
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A Volume-Limited Sample of Ultracool Dwarfs. II. The Substellar Age and Mass Functions in the Solar Neighborhood
Published 17-01-2024“…We present the most precise constraints to date for the mass and age distributions of single ultracool dwarfs in the solar neighborhood, based on an updated…”
Get full text
Journal Article -
17
Efficiently Searching for Close-in Companions around Young M Dwarfs using a Multi-year PSF Library
Published 26-08-2024“…We present Super-RDI, a unique framework for the application of reference star differential imaging (RDI) to Keck/NIRC2 high-contrast imaging observations with…”
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18
Identifying Periodic Variable Stars and Eclipsing Binary Systems with Long-Term Las Cumbres Observatory Photometric Monitoring of ZTF J0139+5245
Published 27-07-2021“…We present the results of our search for variable stars using the long-term Las Cumbres Observatory (LCO) monitoring of white dwarf ZTF J0139+5245 with the two…”
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19
The Hawaii Infrared Parallax Program. VI. The Fundamental Properties of 1000+ Ultracool Dwarfs and Planetary-mass Objects Using Optical to Mid-IR SEDs and Comparison to BT-Settl and ATMO 2020 Model Atmospheres
Published 06-09-2023“…We derive the bolometric luminosities ($L_{\mathrm{bol}}$) of 865 field-age and 189 young ultracool dwarfs (spectral types M6-T9, including 40 new discoveries…”
Get full text
Journal Article -
20
UV-Optical Emission of AB Aur b is Consistent with Scattered Stellar Light
Published 30-08-2023“…The proposed protoplanet AB Aur b is a spatially concentrated emission source imaged in the mm-wavelength disk gap of the Herbig Ae/Be star AB Aur. Its…”
Get full text
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