A5101649559- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- Atmospheric and Environmental Gas Dynamics
University of Toledo
2024
Abstract Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H 2 in the center massive spiral galaxy Messier 58, which hosts radio-loud active galactic nucleus (AGN). The inner 2.6 kpc appears to be overrun by shocks from radio jet cocoon. Gemini NIRI imaging 1–0 S(1) emission line, Atacama Large Millimeter/submillimeter Array CO 2–1, and Hubble Space Telescope multiband imagery indicate that much molecular gas is shocked situ, corresponding lanes dusty toward nucleus....
Abstract We use deep Spitzer mid-infrared spectroscopic maps of radial strips across three nearby galaxies with well-studied metallicity gradients (M101, NGC 628, and 2403) to explore the physical origins observed deficit polycyclic aromatic hydrocarbons (PAHs) at subsolar (i.e., PAH–metallicity relation or PZR). These allow us trace evolution all PAH features from 5–18 μ m as decreases continuously solar ( Z ⊙ ) 0.2 . The total PAH-to-dust luminosity ratio remains relatively constant until...
Abstract We present a focused study of radially resolved varying PAH emission in the low-luminosity active galactic nucleus (AGN)-host NGC 4138 using deep Spitzer/infrared spectrograph spectral maps. Using new model spectra, we investigate whether these variations could be associated with changes to grain size distribution due photodestruction by AGN. Separately, effects radiation field within 4138, and use this predict corresponding spectrum. find that band ratios are strongly variable...
We introduce a prescription for estimating the flux of 7.7 micron and 11.3 micron\ polycyclic aromatic hydrocarbon (PAH) features from broadband JWST/MIRI images. Probing PAH with MIRI imaging data has advantages in field view, spatial resolution, sensitivity compared spectral maps, but comparisons spectra are needed to calibrate these estimations over wide variety environments. For 267 MIRI/MRS independent regions four luminous infrared galaxies (LIRGs) Great Observatories All-sky LIRG...
We present a study of new 7.7-11.3 μm data obtained with the James Webb Space Telescope Mid-InfraRed Instrument in starburst galaxy M 82. In particular, we focus on dependency integrated CO(1-0) line intensity MIRI-F770W and MIRI-F1130W filter intensities to investigate correlation between H_2 content 7.7 11.3 features from polycyclic aromatic hydrocarbons (PAH) 82's outflows. To perform our analysis, identify CO clouds using archival ^12CO(J=1-0) NOEMA moment 0 map within 2 kpc center 82,...
Abstract We introduce a prescription for estimating the flux of 7.7 μ m and 11.3 polycyclic aromatic hydrocarbon (PAH) features from broadband JWST/MIRI images. Probing PAH with MIRI imaging data has advantages in field view, spatial resolution, sensitivity compared spectral maps, but comparisons spectra are needed to calibrate these estimations over wide variety environments. For 267 MIRI/MRS independent regions four luminous infrared galaxies (LIRGs) Great Observatories All-sky LIRG Survey...
We use deep Spitzer mid-infrared spectroscopic maps of radial strips across three nearby galaxies with well-studied metallicity gradients (M101, NGC 628, and 2403) to explore the physical origins observed deficit polycyclic aromatic hydrocarbons (PAHs) at sub-solar (i.e. PAH-metallicity relation or PZR). These allow us trace evolution all PAH features from 5-18 $\mu$m as decreases continuously solar ($Z_\odot$) 0.2 $Z_\odot$. The total dust luminosity ratio remains relatively constant until...
Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H2 in the center massive spiral galaxy Messier 58, which hosts radio-loud AGN. The inner 2.6 kpc appears to be overrun by shocks from radio jet cocoon. Gemini NIRI imaging 1-0 S(1) emission line, ALMA CO 2-1, and HST multiband imagery indicate that much molecular gas is shocked in-situ, corresponding lanes dusty towards nucleus. 2-1 ionized kinematics are disturbed, with velocity dispersion up 300 km/s. Dissipation...