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Crowded No More: The Accuracy of the Hubble Constant Tested with High Resolution Observations of Cepheids by JWST
Adam G. Riess, Gagandeep S. Anand, Wenlong Yuan +7
High-resolution JWST observations can test confusion-limited HST observations for a photometric bias that could affect extragalactic Cepheids and the determination of the Hubble co…
Standardized Luminosity of the Tip of the Red Giant Branch utilizing Multiple Fields in NGC 4258 and the CATs Algorithm
Siyang Li, Adam G. Riess, Dan Scolnic +6
The Tip of the Red Giant Branch provides a luminous standard candle for calibrating distance ladders that reach Type Ia supernova (SN Ia) hosts. However, recent work reveals that t…
CATS: The Hubble Constant from Standardized TRGB and Type Ia Supernova Measurements
D. Scolnic, A. G. Riess, J. Wu +7
The Tip of the Red Giant Branch (TRGB) provides a luminous standard candle for constructing distance ladders to measure the Hubble constant. In practice its measurements via edge-d…
Is there a dwarf galaxy satellite-of-satellite problem in CDM?
Oliver Müller, Nick Heesters, Helmut Jerjen +2
Dark matter clusters on all scales, therefore it is expected that even substructure should host its own substructure. Using the Extragalactic Distance Database, we searched for dwa…
A nearby isolated dwarf: star formation and structure of ESO 006-001
Lidia N. Makarova, R. Brent Tully, Gagandeep S. Anand +4
Observations with the Hubble Space Telescope unexpectedly revealed that the dwarf galaxy ESO 006-001 is a near neighbor to the Local Group at a distance of 2.70 +- 0.11 Mpc. The st…
Serendipitous Nebular-phase JWST Imaging of SN Ia 2021aefx: Testing the Confinement of 56-Co Decay Energy
Ness Mayker Chen, Michael A. Tucker, Nils Hoyer +29
We present new 0.3-21 micron photometry of SN 2021aefx in the spiral galaxy NGC 1566 at +357 days after B-band maximum, including the first detection of any SN Ia at >15 micron. Th…
PHANGS-JWST First Results: The Dust Filament Network of NGC 628 and its Relation to Star Formation Activity
David A. Thilker, Janice C. Lee, Sinan Deger +36
PHANGS-JWST mid-infrared (MIR) imaging of nearby spiral galaxies has revealed ubiquitous filaments of dust emission in intricate detail. We present a pilot study to systematically…