Results 121 to 130 of about 4,742 (219)

A Census from JWST of Extreme Emission-line Galaxies Spanning the Epoch of Reionization in CEERS

The Astrophysical Journal
We present a sample of 1165 extreme emission-line galaxies (EELGs) at 4 < z < 9 selected using James Webb Space Telescope (JWST) NIRCam photometry in the Cosmic Evolution Early Release Science (CEERS) program.
Kelcey Davis, Jonathan R. Trump, Raymond C. Simons, Elizabeth J. McGrath, Stephen M. Wilkins, Pablo Arrabal Haro, Micaela B. Bagley, Mark Dickinson, Vital Fernández, Ricardo O. Amorín, Bren E. Backhaus, Nikko J. Cleri, Mario Llerena, Samantha W. Brunker, Guillermo Barro, Laura Bisigello, Madisyn Brooks, Luca Costantin, Alexander de la Vega, Avishai Dekel, Steven L. Finkelstein, Nimish P. Hathi, Michaela Hirschmann, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Ray A. Lucas, Casey Papovich, Pablo G. Pérez-González, Nor Pirzkal, Giulia Rodighiero, Caitlin Rose, L. Y. Aaron Yung, CEERS Collaborators   +32 more
doaj   +1 more source

Detailed Study of Stars and Gas in a z = 8.3 Massive Merger with Extreme Dust Conditions

The Astrophysical Journal Letters
We present galaxy MACS0416-Y1 at z _spec = 8.312 as observed by the CAnadian NIRISS Unbiased Cluster Survey. MACS0416-Y1 has been shown to have extreme dust properties; thus, we study the physical properties and star formation histories of its resolved ...
Anishya Harshan, Roberta Tripodi, Nicholas S. Martis, Gregor Rihtaršič, Maruša Bradač, Yoshihisa Asada, Gabe Brammer, Guillaume Desprez, Vince Estrada-Carpenter, Jasleen Matharu, Vladan Markov, Adam Muzzin, Lamiya Mowla, Gaël Noirot, Ghassan T. E. Sarrouh, Marcin Sawicki, Victoria Strait, Chris Willott   +17 more
doaj   +1 more source

Emission Line Spectroscopy of Large, Diffuse Planetary Nebulae

, 2005
Accurate emission line fluxes of planetary nebulae (PN) provide important constraints on the nature of the late stages of stellar evolution. Large (r > 10'), diffuse PN may trace the latest stages of PN evolution, where material from the AGB wind is ...
Frew, D, Madsen, G, Parker, Q, Reynolds, R, Haffner, L   +4 more
core  

Investigation into Triggered Star Formation by Radiative Driven Implosion [PDF]

, 2016
When massive stars form, they emit strong, hydrogen ionising radiation fields into their molecular cloud environment, forming HII regions. This is believed to be capable of inducing effects which can trigger further star formation through a process known
Kinnear, Timothy Michael
core  

The Galactic Center Lobe as an H ii Region

The Astrophysical Journal
The Galactic center lobe (GCL) is an object ∼1° across that is located north of the Galactic center. In the mid-infrared (MIR) the GCL appears as two 8.0 μ m filaments between which there is strong 24 μ m and radio continuum emission.
L. D. Anderson, Matteo Luisi, B. Liu, Dylan J. Linville, Robert A. Benjamin, Natasha Hurley-Walker, N. M. McClure-Griffiths, Catherine Zucker   +7 more
doaj   +1 more source

Understanding Interstellar Metals during Reionization with Radiative Simulation: Metallicity and Emission Lines from the Interstellar Medium at 10 ≥ z ≥ 5

The Astrophysical Journal
We compare the Technicolor Dawn cosmological simulations with recent observations of galactic nebular line emission during the Epoch of Reionization, providing stringent tests of the predicted ionization and metal enrichment levels.
Samir Kušmić, Kristian Finlator, Ezra Huscher, Maya Steen   +3 more
doaj   +1 more source

The UM/CTIO Magellanic Cloud Emission-line Survey

, 1998
The Magellanic Clouds are unique in providing us with sites to study the interstellar medium (ISM) and its components at all scales. To promote the pursuit of such studies, we have begun the Magellanic Cloud Emission-line Survey (MCELS), a deep imaging ...
null null, R. Chris Smith
core   +1 more source

Estimating the Sonic Mach Number in the Interstellar Medium with Convolutional Neural Networks

The Astrophysical Journal
Understanding the role of turbulence in shaping the interstellar medium (ISM) is crucial for studying star formation, molecular cloud evolution, and cosmic-ray propagation.
Tyler Schmaltz, Yue Hu, Alex Lazarian
doaj   +1 more source

Molecular Clouds in the Outer Milky Way Disk: Sample, Integrated Properties, and Radial Trends with Galactocentric Radius

The Astrophysical Journal Supplement Series
We present a catalog of 32,162 ^12 CO molecular clouds that covers the northern outer Galactic plane ( l = [15°, 165°] and l = [195°, 230°], and b = [−5.°25, +5.°25]).
Yan Sun, Ji Yang, Qing-Zeng Yan, Shaobo Zhang, Yang Su, Xuepeng Chen, Xin Zhou, Yuehui Ma, Lixia Yuan   +8 more
doaj   +1 more source

FAST Search for Circumstellar Atomic Hydrogen. III. Planetary Nebulae at Galactic Latitudes ∣b∣ ≥ 10°

The Astronomical Journal
The detection of circumstellar atomic hydrogen (H i ) via the 21 cm line remains a persistent challenge in planetary nebula (PN) studies, primarily due to contamination from ubiquitous interstellar H i 21 cm emission. In this paper, we report the results
Xu-Jia Ouyang, Yong Zhang, Albert Zijlstra, Chuan-Peng Zhang, Jun-ichi Nakashima, Quentin A. Parker, Xiao-Hu Li   +6 more
doaj   +1 more source