M101 Group: Galaxy Evolution in a Nearby Laboratory
I have focused on the M101 Group since graduate school. Because it is only a few megaparsecs away, this small, isolated galaxy group gives us a detailed look at how spiral galaxies …
Implications of Broad [OIII]4364 and UV Line Emission in Two Little Red Dots at z ~ 7 - 8
We present deep, NIRSpec G140M and G395M spectroscopy of Little Red Dots (LRDs) at z = 6.68 and z = 8.35. Both LRDs show broad Balmer and [O III]λ4364 emission. The broad [O …
casey-papovich
SIGNALS of Giant HII Regions: A Spatially Resolved Analysis of NGC 604
Observing giant H II regions at fine spatial scales uncovers detailed structures and reveals variations in ionization, abundance, and dynamical properties of ionized gas and the …
SIGNALS of Giant HII Regions: A Spatially Resolved Analysis of NGC 604
A 5-minute oral presentation delivered to the American Astronomical Society. This covers a recent completed paper on the spatially resolved data of NGC 604 as part of the SIGNALS …
Optical Strong Line Ratios Cannot Distinguish Between Stellar Populations and Accreting Black Holes at High Ionization Parameters and Low Metallicities
High-redshift observations from JWST indicate that optical strong line ratios do not carry the same constraining power as they do at low redshifts. Critically, this prevents a …
nikko-j.-cleri
Poster: SIGNALS of Giant HII Regions: Resolved Ionization & Abundance Properties of NGC 604
A poster presentation about my work investigating the spatially-resolved properties of NGC 604.
The SIGNALS from HII Regions
An invited review talk at the SIGNALS workshop about HII regions, pockets of gas ionized by hot stars. In this talk, I give an overview of the work that has been done about HII …
Explaining the Abundance-Ionization Correlation in HII Regions with NGC 628
An invited presentation about my work investigating the correlation between the ionization parameter and oxygen abundance in NGC 628.
SIGNALS on the mixing of oxygen and nitrogen in the spiral galaxy NGC 6946
As part of the SIGNALS survey, which comprises a sample of approximately 40 nearby galaxies observed with the Fourier transform spectrometer SITELLE, we present a study of metal …
fabio-bresolin
NGC 628 in SIGNALS: Explaining the Abundance-Ionization Correlation in HII Regions
The variations of oxygen abundance and ionization parameter in H II regions are usually thought to be the dominant factors that produced variations seen in observed emission line …