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HST F160W obs. of the SSA22 protocluster field
We examine possible environmental sources of the enhanced star formation and active galactic nucleus (AGN) activity in the z=3.09 SSA22 protocluster using Hubble WFC3 F160W... -
SDSS shocked post-starburst gal. with HST obs.
How do galaxies transform from blue, star-forming spirals to red, quiescent early-type galaxies? To answer this question, we analyzed a set of 26 gas-rich, shocked... -
HST obs. of supernova remnants in NGC6946
We constrained the progenitor masses for 169 supernova remnants (SNRs), eight historically observed supernovae (SNe), and the black hole formation candidate in NGC 6946, finding... -
Phot. measurements of stars in & near 1E 0102.2-7219
1E 0102.2-7219 (hereafter E0102) is a young supernova remnant (SNR) in the Small Magellanic Cloud. It contains oxygen-rich SN ejecta, a possible neutron star (NS), and a small... -
HST opt. & H-band obs. of Cepheids in NGC4051
We derive a distance of D=16.6+/-0.3Mpc ({mu}=31.10+/-0.04mag) to the archetypal narrow-line Seyfert 1 galaxy NGC 4051 based on Cepheid period-luminosity relations and new... -
SED modelling of LEGA-C & HST massive gal.
We explore the connection between the kinematics, structures and stellar populations of massive galaxies at 0.6<z<1.0 using the fundamental plane (FP). Combining stellar... -
M83 X-ray binary classifications from HST
Building on recent work by Chandar+ (2020, J/ApJ/890/150), we construct X-ray luminosity functions (XLFs) for different classes of X-ray binary (XRB) donors in the nearby... -
Column densities of CGM absorption lines
We investigate the geometric distribution of gas metallicities in the circumgalactic medium (CGM) around 47, z<0.7 galaxies from the "Multiphase Galaxy Halos" Survey. Using a... -
Spectrophotometric redshifts of GOODS galaxies
We investigate the accuracy of 4000{AA}/Balmer-break based redshifts by combining Hubble Space Telescope (HST) grism data with photometry. The grism spectra are from the Probing... -
Masses of SNR progenitors in M83
We determine the ages of the young, resolved stellar populations at the locations of 237 optically identified supernova remnants in M83. These age distributions put constraints... -
HST phot. & GMOS spectra of Lynx E & W clusters
Few detailed investigations of stellar populations in passive galaxies beyond z~1 are based on deep spectroscopic observations, due to the difficulty in obtaining such data. We... -
HST opt. & H-band obs. of Cepheids in NGC4151
We derive a distance of 15.8+/-0.4Mpc to the archetypal Seyfert 1 galaxy NGC 4151 based on the near-infrared Cepheid period-luminosity relation and new Hubble Space Telescope... -
HST obs. & Gaia data of Hercules dwarf gal.
The ultrafaint dwarf galaxy Hercules has an extremely elongated morphology with both photometric overdensities and kinematic members at large radii, suggesting that it may be... -
CLEAR. II. SFRs of quiescent galaxies
The origin of the correlations between mass, morphology, quenched fraction, and formation history in galaxies is difficult to define, primarily due to the uncertainties in... -
Cepheids HST amplitudes in V- and H-band
The accuracy of the Hubble constant measured with extragalactic Cepheids depends on robust photometry and background estimation in the presence of stellar crowding. The... -
Ultra-diffuse & LSB dwarf galaxies in A370 from HFF
We report the discovery of ultra-diffuse galaxies (UDGs) in Abell 370 (A370; z=0.375). We find 46 UDGs in A370 from the images of the Hubble Frontier Fields. Most UDGs are... -
X-ray binaries in M101 with HST optical data
The high-energy emission from nearby, star-forming galaxies is dominated by X-ray binaries, where a neutron star or black hole is accreting mass from either a low-mass... -
HST obs. of Mira variables in the SNIa host NGC1559
We present year-long, near-infrared Hubble Space Telescope (HST) WFC3 observations used to search for Mira variables in NGC 1559, the host galaxy of the Type Ia supernova (SN... -
Brightest high-z galaxies in RELICS clusters
Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a view into both the extremely distant and intrinsically faint galaxy... -
LEGUS & Ha-LEGUS obs. of NGC4449 star clusters
We present a new catalog and results for the cluster system of the starburst galaxy NGC 4449, based on multiband imaging observations taken as part of the LEGUS and...
