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JWST Whirlpool Galaxy Treasury: Mid-Infrared Emission in M51 and its Relation to Gas Column and Star Formation
Mansi Padave, Karin M. Sandstrom, Daniel A. Dale +25
Using JWST/MIRI imaging of M51 in eight broadband filters, we investigate correlations of mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) and dust continuum with…
The HII Regions' Molecular Law of Star Formation
Daniela Calzetti, Drew Lapeer, Robert C. Kennicutt +28
We combine imaging data from the HST, JWST, and ground-based millimeter facilities to investigate the correlation between star formation rate (SFR) and molecular gas at the ~100 pc…
Electron Density of Ionized Gas Outflows: Insights from the MaNGA Survey
Andrew Weldon, Casey Papovich, Justin Spilker +1
We investigate the properties of ionized gas outflows in nearby star-forming galaxies from the final Data Release of the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA)…
Ashes of Creation: JWST Uncovers Silicate Dust in Massive Star Clusters
Daniel Maschmann, Bradley C. Whitmore, David A. Thilker +35
Dust production is a fundamental aspect of the baryonic cycle of star formation. It is known that dust is injected into the interstellar medium during early star formation by super…
SIGNALS of Giant HII Regions: A Spatially Resolved Analysis of NGC 604
Ray Garner, Robert C. Kennicutt, Laurent Drissen +6
Observing giant HII regions at fine spatial scales uncovers detailed structures and reveals variations in ionization, abundance, and dynamical properties of ionized gas and the eff…
Quantification of The Age Dependence of Mid-Infrared Star Formation Rate Indicators
Daniela Calzetti, Robert C. Kennicutt, Angela Adamo +33
We combine James Webb Space Telescope images of the nearby galaxy NGC 5194 in the hydrogen recombination line Pa-alpha (lambda=1.8756 micron) from the Cycle 1 program JWST-FEAST wi…
Detection of Deuterated Hydrocarbon Nanoparticles in the Whirlpool Galaxy, M51
B. T. Draine, Karin Sandstrom, Daniel A. Dale +29
Deuteration of hydrocarbon material, including polycyclic aromatic hydrocarbons (PAHs), has been proposed to account for the low gas-phase abundances of D in the interstellar mediu…
An Investigation of Disk Thickness in M51 from H-alpha, Pa-alpha, and Mid-Infrared Power Spectra
Bruce G. Elmegreen, Daniela Calzetti, Angela Adamo +27
Power spectra (PS) of high-resolution images of M51 (NGC 5194) taken with the Hubble Space Telescope and the James Webb Space Telescope have been examined for evidence of disk thic…
NGC 628 in SIGNALS: Explaining the Abundance-Ionization Correlation in HII Regions
Ray Garner, Robert Kennicutt, Laurie Rousseau-Nepton +5
The variations of oxygen abundance and ionization parameter in HII regions are usually thought to be the dominant factors that produced variations seen in observed emission line sp…
Active Galactic Nuclei in the Green Valley at z0.7
Charity Woodrum, Christina C. Williams, Marcia Rieke +5
We present NIR spectroscopy using MMT/MMIRS for a sample of twenty-nine massive galaxies () at with optical spectroscop…
JWST MIRI and NIRCam observations of NGC 891 and its circumgalactic medium
Jérémy Chastenet, Ilse De Looze, Monica Relaño +37
We present new JWST observations of the nearby, prototypical edge-on, spiral galaxy NGC 891. The northern half of the disk was observed with NIRCam in its F150W and F277W filters.…
The Metallicity Dependence of PAH Emission in Galaxies I: Insights from Deep Radial Spitzer Spectroscopy
Cory M. Whitcomb, J. -D. T. Smith, Karin Sandstrom +9
We use deep Spitzer mid-infrared spectroscopic maps of radial strips across three nearby galaxies with well-studied metallicity gradients (M101, NGC 628, and NGC 2403) to explore t…
Characterizing the Average Interstellar Medium Conditions of Galaxies at 5.6-9 with UV and Optical Nebular Lines
Weida Hu, Casey Papovich, Mark Dickinson +30
Ultraviolet (UV; rest-frame A) spectra provide a wealth of diagnostics to characterize fundamental galaxy properties, such as their chemical enrichment, the nature…
ALMA-LEGUS II: The Influence of Sub-Galactic Environment on Molecular Cloud Properties
Molly K. Finn, Kelsey E. Johnson, Remy Indebetouw +24
We compare the molecular cloud properties in sub-galactic regions of two galaxies, barred spiral NGC 1313, which is forming many massive clusters, and flocculent spiral NGC 7793, w…
ALMA-LEGUS I: The Influence of Galaxy Morphology on Molecular Cloud Properties
Molly K. Finn, Kelsey E. Johnson, Remy Indebetouw +24
We present a comparative study of the molecular gas in two galaxies from the LEGUS sample: barred spiral NGC 1313 and flocculent spiral NGC 7793. These two galaxies have similar ma…
CEERS: 7.7 m PAH Star Formation Rate Calibration with JWST MIRI
Kaila Ronayne, Casey Papovich, Guang Yang +33
We test the relationship between UV-derived star formation rates (SFRs) and the 7.7 m polycyclic aromatic hydrocarbon (PAH) luminosities from the integrated emission of galaxies…
DIISC-III: Signatures of Stellar Disk Growth in Nearby Galaxies
Mansi Padave, Sanchayeeta Borthakur, Hansung B. Gim +8
We explore the growth of the stellar disks in 14 nearby spiral galaxies as part of the Deciphering the Interplay between the Interstellar medium, Stars, and the Circumgalactic medi…
Universal Upper End of the Stellar Initial Mass Function in the Young and Compact LEGUS clusters
Dooseok Escher Jung, Daniela Calzetti, Matteo Messa +21
We investigate the variation in the upper end of stellar initial mass function (uIMF) in 375 young and compact star clusters in five nearby galaxies within Mpc. All the yo…
Constraining the LyC escape fraction from LEGUS star clusters with SIGNALS HII region observations: A pilot study of NGC 628
J. W. Teh, K. Grasha, M. R. Krumholz +23
The ionising radiation of young and massive stars is a crucial form of stellar feedback. Most ionising (Lyman-continuum; LyC, ) photons are absorbed close to the stars tha…
Spectral Energy Distributions for 258 Local Volume Galaxies
Daniel A. Dale, Mederic Boquien, Jordan A. Turner +3
We present model spectral energy distribution (SED) fits to ultraviolet/optical/infrared observations for the 258 nearby galaxies in the Local Volume Legacy survey, a sample domina…
Fraction of Stars in Clusters for the LEGUS Dwarf Galaxies
D. O. Cook, J. C. Lee, A. Adamo +20
We study the young star cluster populations in 23 dwarf and irregular galaxies observed by the HST Legacy ExtraGalactic Ultraviolet Survey (LEGUS), and examine relationships betwee…
Molecular Gas Reservoirs in Massive Quiescent Galaxies at Linked to Late Time Star Formation
Charity Woodrum, Christina C. Williams, Marcia Rieke +6
We explore how the presence of detectable molecular gas depends on the inferred star formation histories (SFHs) in 8 massive, quiescent galaxies at . Half of the…
The Dense Gas Mass Fraction and the Relationship to Star Formation in M51
Mark Heyer, Benjamin Gregg, Daniela Calzetti +15
Observations of 12CO J=1-0 and HCN J=1-0 emission from NGC 5194 (M51) made with the 50~meter Large Millimeter Telescope and the SEQUOIA focal plane array are presented. Using the H…
IR SED and Dust Masses of Sub-solar Metallicity Galaxies at z~2.3
Irene Shivaei, Gergö Popping, George Rieke +12
We present results from ALMA 1.2mm continuum observations of a sample of 27 star-forming galaxies at z=2.1-2.5 from the MOSFIRE Deep Evolution Field (MOSDEF) survey. These galaxies…