163 citations · 1.7k across the 45 of their papers we have counts for
27 papers · 1 filter
Near-Infrared Spectroscopy with IGRINS-2 for Studying Multiple Stellar Populations in Globular Clusters
Dongwook Lim, Young-Wook Lee, Sol Yun +53
Recent advancements in near-infrared (NIR) spectroscopy have opened new opportunities for studying multiple stellar populations in globular clusters (GCs), particularly for newly d…
Star Cluster Classification using Deep Transfer Learning with PHANGS-HST
Stephen Hannon, Bradley C. Whitmore, Janice C. Lee +17
Currently available star cluster catalogues from HST imaging of nearby galaxies heavily rely on visual inspection and classification of candidate clusters. The time-consuming natur…
PHANGS-JWST First Results: Massive Young Star Clusters and New Insights from JWST Observations of NGC 1365
Bradley C. Whitmore, Rupali Chandar, M. Jimena Rodríguez +28
A primary new capability of JWST is the ability to penetrate the dust in star forming galaxies to identify and study the properties of young star clusters that remain embedded in d…
The PHANGS-JWST Treasury Survey: Star Formation, Feedback, and Dust Physics at High Angular resolution in Nearby GalaxieS
Janice C. Lee, Karin M. Sandstrom, Adam K. Leroy +74
The PHANGS collaboration has been building a reference dataset for the multi-scale, multi-phase study of star formation and the interstellar medium in nearby galaxies. With the suc…
PHANGS-JWST First Results: A statistical view on bubble evolution in NGC628
Elizabeth J. Watkins, Ashley Barnes, Kiana F. Henny +49
The first JWST observations of nearby galaxies have unveiled a rich population of bubbles that trace the stellar feedback mechanisms responsible for their creation. Studying these…
PHANGS-JWST First Results: Dust embedded star clusters in NGC 7496 selected via 3.3 m PAH emission
Jimena Rodriguez, Janice Lee, Bradley Whitmore +38
The earliest stages of star formation occur enshrouded in dust and are not observable in the optical. Here we leverage the extraordinary new high-resolution infrared imaging from J…
A Near-infrared Survey of UV-excited Molecular Hydrogen in Photodissociation Regions
Kyle F. Kaplan, Harriet L. Dinerstein, Hwihyun Kim +1
We present a comparative study of the near-infrared (NIR) H line emission from five regions near hot young stars: Sharpless 140, NGC 2023, IC 63, the Horsehead Nebula, and the…
The Transition from Diffuse Molecular Gas to Molecular Cloud Material in Taurus
S. R. Federman, Johnathan S. Rice, A. M. Ritchey +6
We study four lines of sight that probe the transition from diffuse molecular gas to molecular cloud material in Taurus. Measurements of atomic and molecular absorption are used to…
LEGUS and Halpha-LEGUS Observations of Star Clusters in NGC 4449: Improved Ages and the Fraction of Light in Clusters as a Function of Age
Bradley C. Whitmore, Rupali Chandar, Janice Lee +16
We present a new catalog and results for the cluster system of the starburst galaxy NGC 4449 based on multi-band imaging observations taken as part of the LEGUS and Halpha-LEGUS su…
The Spatial Relation between Young Star Clusters and Molecular Clouds in M 51 with LEGUS
K. Grasha, D. Calzetti, A. Adamo +21
We present a study correlating the spatial locations of young star clusters with those of molecular clouds in NGC~5194, in order to investigate the timescale over which clusters se…
A comparison of young star properties with local galactic environment for LEGUS/LITTLE THINGS dwarf irregular galaxies
Deidre A. Hunter, Angela Adamo, Bruce G. Elmegreen +25
We have explored the role environmental factors play in determining characteristics of young stellar objects in nearby dwarf irregular and Blue Compact Dwarf galaxies. Star cluster…
High-resolution near-IR Spectral mapping with H and [Fe II] lines of Multiple Outflows around LkH 234
Heeyoung Oh, Tae-Soo Pyo, Bon-Chul Koo +11
We present a high-resolution, near-IR spectroscopic study of multiple outflows in the LkH 234 star formation region using the Immersion GRating INfrared Spectrometer (IGRINS). S…
A study of two dwarf irregular galaxies with asymmetrical star formation distributions
Deidre A. Hunter, Samavarti Gallardo, Hong-Xin Zhang +23
Two dwarf irregular galaxies DDO 187 and NGC 3738 exhibit a striking pattern of star formation: intense star formation is taking place in a large region occupying roughly half of t…
The resolved stellar populations in the LEGUS galaxies
E. Sabbi, D. Calzetti, L. Ubeda +52
The Legacy ExtraGalactic UV Survey (LEGUS) is a multiwavelength Cycle 21 Treasury program on the Hubble Space Telescope. It studied 50 nearby star-forming galaxies in five bands fr…
Hierarchical Star Formation in Turbulent Media: Evidence from Young Star Clusters
K. Grasha, B. G. Elmegreen, D. Calzetti +16
We present an analysis of the positions and ages of young star clusters in eight local galaxies to investigate the connection between the age difference and separation of cluster p…
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…
H2, CO, and Dust Absorption through Cold Molecular Clouds
John H. Lacy, Christopher Sneden, Hwihyun Kim +1
The abundance of H2 in molecular clouds, relative to the commonly used tracer CO, has only been measured toward a few embedded stars, which may be surrounded by atypical gas. We pr…
Excitation of Molecular Hydrogen in the Orion Bar Photodissociation Region From a Deep Near-Infrared IGRINS Spectrum
Kyle F. Kaplan, Harriet L. Dinerstein, Heeyoung Oh +9
We present a deep near-infrared spectrum of the Orion Bar Photodissociation Region (PDR) taken with the Immersion Grating INfrared Spectrometer (IGRINS) on the 2.7 m telescope at t…
Three-dimensional Shock Structure of Orion KL Outflow with IGRINS
Heeyoung Oh, Tae-Soo Pyo, Kyle F. Kaplan +17
We report a study of the three-dimensional (3D) outflow structure of a 15$\arcsec$ 13$\arcsec$ area around H peak 1 in Orion KL with slit-scan observations (13 slits…
Star Cluster Properties in Two LEGUS Galaxies Computed with Stochastic Stellar Population Synthesis Models
Mark R. Krumholz, Angela Adamo, Michele Fumagalli +14
We investigate a novel Bayesian analysis method, based on the Stochastically Lighting Up Galaxies (slug) code, to derive the masses, ages, and extinctions of star clusters from int…
Hierarchical Star Formation across the ring galaxy NGC 6503
Dimitrios A. Gouliermis, David Thilker, Bruce G. Elmegreen +25
We present a detailed clustering analysis of the young stellar population across the star-forming ring galaxy NGC 6503, based on the deep HST photometry obtained with the Legacy Ex…
A Newly Recognized Very Young Supernova Remnant in M83
William P. Blair, P. Frank Winkler, Knox S. Long +7
As part of a spectroscopic survey of supernova remnant candidates in M83 using the Gemini-South telescope and GMOS, we have discovered one object whose spectrum shows very broad li…
Big Fish in Small Ponds: Massive Stars in the Low Mass Clusters of M83
J. E. Andrews, D. Calzetti, R. Chandar +8
We have used multi-wavelength Hubble Space Telescope WFC3 data of the starbursting spiral galaxy M83 in order to measure variations in the upper end of the stellar initial mass fun…
Hierarchical Star Formation in Nearby LEGUS Galaxies
Debra Meloy Elmegreen, Bruce G. Elmegreen, Angela Adamo +19
Hierarchical structure in ultraviolet images of 12 late-type LEGUS galaxies is studied by determining the numbers and fluxes of nested regions as a function of size from ~1 to ~200…