163 citations · 1.2k across the 24 of their papers we have counts for
24 papers
Unveiling Metal Mixing in a Grand-Design Spiral: A UV-optical multiphase spatially resolved study of M83
Adarsh Ranjan, Bethan L. James, Svea Hernandez +4
We present a spatially resolved, multiphase study of chemical enrichment around young star clusters (YSCs) in the nearby grand-design spiral M83 by combining far-ultraviolet(UV) ab…
CLASSY VII Lyα Profiles: The Structure and Kinematics of Neutral Gas and Implications for LyC Escape in Reionization-Era Analogs
Weida Hu, Crystal L. Martin, Max Gronke +22
Lyman-alpha line profiles are a powerful probe of ISM structure, outflow speed, and Lyman continuum escape fraction. In this paper, we present the Ly line profiles of the COS Le…
HST resolves stars in a tiny body falling on the dwarf galaxy DDO 68
F. Annibali, M. Bellazzini, M. Correnti +9
We present new Hubble Space Telescope (HST) imaging of a stream-like system associated with the dwarf galaxy DDO 68, located in the Lynx-Cancer Void at a distance of D12.65 M…
Connecting Young Star Clusters to CO Molecular Gas in NGC 7793 with ALMA-LEGUS
K. Grasha, D. Calzetti, L. Bittle +20
We present an investigation of the relationship between giant molecular cloud (GMC) properties and the associated stellar clusters in the nearby flocculent galaxy NGC 7793. We comb…
Search For Star Cluster Age Gradients Across Spiral Arms of Three LEGUS Disk Galaxies
F. Shabani, E. K. Grebel, A. Pasquali +20
One of the main theories for explaining the formation of spiral arms in galaxies is the stationary density wave theory. This theory predicts the existence of an age gradient across…
Star Formation Histories of the LEGUS dwarf galaxies. II. Spatially resolved star formation history of the Magellanic irregular NGC 4449
Elena Sacchi, Michele Cignoni, Alessandra Aloisi +16
We present a detailed study of the Magellanic irregular galaxy NGC 4449 based on both archival and new photometric data from the Legacy Extragalactic UV Survey, obtained with the H…
Extinction Maps and Dust-to-Gas Ratios in Nearby Galaxies with LEGUS
L. Kahre, R. A. Walterbos, H. Kim +44
We present a study of the dust-to-gas ratios in five nearby galaxies NGC 628 (M74), NGC 6503, NGC 7793, UGC 5139 (Holmberg I), and UGC 4305 (Holmberg II). Using Hubble Space Telesc…
Star Formation Histories of the LEGUS Dwarf Galaxies (I): recent History of NGC1705, NGC4449 and Holmberg II
M. Cignoni, E. Sacchi, A. Aloisi +19
We use HST observations from the Legacy Extragalactic UV Survey to reconstruct the recent star formation histories (SFHs) of three actively star-forming dwarf galaxies, NGC4449, Ho…
Legacy ExtraGalactic UV Survey with The Hubble Space Telescope. Stellar cluster catalogues and first insights into cluster formation and evolution in NGC 628
A. Adamo, J. E. Ryon, M. Messa +53
We report the large effort which is producing comprehensive high-level young star cluster (YSC) catalogues for a significant fraction of galaxies observed with the Legacy ExtraGala…
Hubble Tarantula Treasury Project V. The star cluster Hodge 301: the old face of 30 Doradus
M. Cignoni, E. Sabbi, R. P. van der Marel +10
Based on color-magnitude diagrams (CMDs) from the Hubble Space Telescope Hubble Tarantula Treasury Project (HTTP) survey, we present the star formation history (SFH) of Hodge~301,…
Stellar populations and Star Formation History of the Metal-Poor Dwarf Galaxy DDO 68
E. Sacchi, F. Annibali, M. Cignoni +6
We present the star formation history of the extremely metal-poor dwarf galaxy DDO 68, based on our photometry with the Advanced Camera for Surveys. With a metallicity of only $12+…
Hubble Tarantula Treasury Project. III. Photometric Catalog and Resulting Constraints on the Progression of Star Formation in the 30 Doradus Region
E. Sabbi, D. J. Lennon, J. Anderson +21
We present and describe the astro-photometric catalog of more than 800,000 sources found in the Hubble Tarantula Treasury Project (HTTP). HTTP is a Hubble Space Telescope (HST) Tre…
The Spatial Distribution of the Young Stellar Clusters in the Star Forming Galaxy NGC 628
K. Grasha, D. Calzetti, A. Adamo +21
We present a study of the spatial distribution of the stellar cluster populations in the star forming galaxy NGC 628. Using Hubble Space Telescope broad band WFC3/UVIS UV and optic…
Tackling the Saturation of Oxygen: The Use of Phosphorus and Sulphur as Proxies Within the Neutral Interstellar Medium of Star-Forming Galaxies
Bethan L. James, Alessandra Aloisi
The abundance of oxygen in galaxies is widely used in furthering our understanding of galaxy formation and evolution. Unfortunately, direct measurements of O/H in the neutral gas a…
The Brightest Young Star Clusters in NGC 5253
D. Calzetti, K. E. Johnson, A. Adamo +43
The nearby dwarf starburst galaxy NGC5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emiss…
Chemical abundances and properties of the ionized gas in NGC 1705
F. Annibali, M. Tosi, A. Pasquali +3
We obtained [O III] narrow-band imaging and multi-slit MXU spectroscopy of the blue compact dwarf (BCD) galaxy NGC 1705 with FORS2@VLT to derive chemical abundances of PNe and H II…
Investigating Nearby Star-Forming Galaxies in the Ultraviolet with HST/COS Spectroscopy. I: Spectral Analysis and Interstellar Abundance Determinations
Bethan L. James, Alessandra Aloisi, Timothy M. Heckman +2
This is the first in a series of three papers describing a project with the Cosmic Origins Spectrograph on the Hubble Space Telescope to measure abundances of the neutral interstel…
Hubble Tarantula Treasury Project: Unraveling Tarantula's Web. I. Observational overview and first results
E. Sabbi, J. Anderson, D. J. Lennon +18
The Hubble Tarantula Treasury Project (HTTP) is an ongoing panchromatic imaging survey of stellar populations in the Tarantula Nebula in the Large Magellanic Cloud that reaches int…
The Star Formation History of the very metal poor BCD IZw18 from HST/ACS data
F. Annibali, M. Cignoni, M. Tosi +7
We have derived the star formation history (SFH) of the blue compact dwarf galaxy IZw18 through comparison of deep HST/ACS data with synthetic color magnitude diagrams. A statistic…
Ultra Long Period Cepheids: a primary standard candle out to the Hubble flow
G. Fiorentino, G. Clementini, M. Marconi +7
The cosmological distance ladder crucially depends on classical Cepheids (with P=3-80 days), which are primary distance indicators up to 33 Mpc. Within this volume, very few SNe Ia…
The cluster population of the irregular galaxy NGC 4449 as seen by the Hubble Advanced Camera for Surveys
Francesca Annibali, Monica Tosi, Alessandra Aloisi +1
We present a study of the star cluster population in the starburst irregular galaxy NGC 4449 based on B, V, I, and Ha images taken with the Advanced Camera for Surveys on the Hubbl…
Searching for an Intermediate Mass Black Hole in the Blue Compact Dwarf galaxy MRK 996
A. Georgakakis, Y. G. Tsamis, B. L. James +1
The possibility is explored that accretion on an intermediate mass black hole contributes to the ionisation of the interstellar medium of the Compact Blue Dwarf galaxy MRK996. Chan…
Pulsation Models for Ultra-Low (Z=0.0004) Metallicity Classical Cepheids
M. Marconi, I. Musella, G. Fiorentino +7
Classical Cepheids are primary distance indicators playing a fundamental role in the calibration of the extragalactic distance scale. The possible dependence of their characteristi…
Starbursts in the Local Universe: new HST/ACS observations of the irregular galaxy NGC 4449
F. Annibali, A. Aloisi, J. Mack +5
We present photometry with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST) of stars in the Magellanic starburst galaxy NGC 4449. The galaxy has been image…