53 citations · 371 across the 28 of their papers we have counts for
11 papers · 1 filter
Sequential Star-Formation and the Near-Infrared Stellar Populations within N159
Nolan Habel, E. Sabbi, Peter Zeidler +19
We present the first results from a JWST/NIRCam study of the star-forming region N159, one of the richest H II complexes in the Large Magellanic Cloud. This region stretches over $…
The Stellar Population of NGC 346 in the Small Magellanic Cloud with JWST
J. Jaspers, P. Kavanagh, G. De Marchi +13
NGC 346 is a massive star-forming region located at a distance of 62 kpc, in the Small Magellanic Cloud (SMC). Due to its low metallicity (Z 1/5 Z), it is an…
JWST NIRCam and MIRI Reveal the Dust-Producing AGB Population of NGC 6822
Conor Nally, Olivia C. Jones, Laura Lenkić +9
We present a photometric catalogue of the Local Group dwarf galaxy NGC 6822 based on deep JWST observations obtained with the Near-Infrared Camera (NIRCam) and Mid-Infrared Instrum…
A Mid-Infrared Spectroscopic Study of Young Stellar Objects in the SMC Region NGC 346: JWST Detects Dust, Accretion, Ices and Outflows
Nolan Habel, Omnarayani Nayak, Patrick J. Kavanagh +13
We present mid-infrared spectroscopic observations of intermediate- to high-mass young stellar objects (YSOs) in the low-metallicity star-forming region NGC 346 located within the…
First detection of ices in intermediate-mass young stellar objects beyond the Milky Way
Guido De Marchi, Nolan Habel, Margaret Meixner +15
Using NIRSpec on JWST, we studied a sample of 15 intermediate-mass (1.8-4.1 Msun) young stellar objects (YSOs) previously identified with MIRI photometry in the low-metallicity NGC…
Imaging of I Zw 18 by JWST: II. Spatially resolved star formation history
Giacomo Bortolini, Göran Östlin, Nolan Habel +14
The blue compact dwarf galaxy I Zw 18 is one of the most metal-poor () star-forming galaxies in the local Universe. Its evolutionary status has sparked debate w…
JWST observations of CO ice: Tracing the chemical environment and thermal history of ices in protostellar envelopes
Nashanty G. C. Brunken, Will R. M. Rocha, Ewine F. van Dishoeck +38
The structure and composition of simple ices can be modified during stellar evolution by protostellar heating. Key to understanding the involved processes are thermal and chemical…
Imaging of I Zw 18 by JWST. I. Strategy and First Results of Dusty Stellar Populations
Alec S. Hirschauer, Nicolas Crouzet, Nolan Habel +16
We present a JWST imaging survey of I Zw 18, the archetypal extremely metal-poor, star-forming (SF), blue compact dwarf galaxy. With an oxygen abundance of only 3% $Z_{\odot}…
JWST MIRI and NIRCam Unveil Previously Unseen Infrared Stellar Populations in NGC 6822
Conor Nally, Olivia C. Jones, Laura Lenkić +9
NGC 6822 is a nearby (~490 kpc) non-interacting low-metallicity (0.2 Zsolar) dwarf galaxy which hosts several prominent H ii regions, including sites of highly embedded active star…
Extension of HOPS Out to 500 ParSecs (eHOPS). I. Identification and Modeling of Protostars in the Aquila Molecular Clouds
Riwaj Pokhrel, S. Thomas Megeath, Robert A. Gutermuth +14
We present a Spitzer/Herschel focused survey of the Aquila molecular clouds (~pc) as part of the eHOPS (extension of HOPS Out to 500 ParSecs) census of nearby protostar…
An HST Survey of Protostellar Outflow Cavities: Does Feedback Clear Envelopes?
Nolan M. Habel, S. Thomas Megeath, Joseph Jon Booker +10
We study protostellar envelope and outflow evolution using Hubble Space Telescope NICMOS or WFC3 images of 304 protostars in the Orion Molecular clouds. These near-IR images resolv…