Results 81 to 90 of about 180,573 (206)

New Synoptic Observations of the Cosmic Optical Background with New Horizons

The Astrophysical Journal
We obtained New Horizons LORRI images to measure the cosmic optical background (COB) intensity integrated over 0.4 μ m ≲ λ ≲ 0.9 μ m. The survey comprises 16 high-Galactic-latitude fields selected to minimize scattered diffuse Galactic light (DGL) from ...
Marc Postman, Tod R. Lauer, Joel W. Parker, John R. Spencer, Harold A. Weaver, J. Michael Shull, S. Alan Stern, Pontus Brandt, Steven J. Conard, G. Randall Gladstone, Carey M. Lisse, Simon B. Porter, Kelsi N. Singer, Anne. J. Verbiscer   +13 more
doaj   +1 more source

Extragalactic Stellar Astronomy with Blue Supergiants

, 2007
2 pages. To appear in the proceedings of the workshop "Massive Stars: Fundamental Parameters and Circumstellar Interactions", Rev. Mex. Astron. Astrofis.
Przybilla, N., Bresolin, F., Butler, K., Kudritzki, R. P., Urbaneja, M. A., Venn, K. A.   +5 more
openaire   +2 more sources

EPOCHS. I. The Discovery and Star-forming Properties of Galaxies in the Epoch of Reionization at 6.5 < z < 18 with PEARLS and Public JWST Data

The Astrophysical Journal
We present in this paper the discovery, properties, and a catalog of 1165 high-redshift 6.5  12 in our sample and describe their properties. Finally, we note a significant observed excess of galaxies compared to models at z  > 12, revealing a tension ...
Christopher J. Conselice, Nathan Adams, Thomas Harvey, Duncan Austin, Leonardo Ferreira, Katherine Ormerod, Qiao Duan, James Trussler, Qiong Li, Ignas Juodžbalis, Lewi Westcott, Honor Harris, Louise T. C. Seeyave, Asa F. L. Bluck, Rogier A. Windhorst, Rachana Bhatawdekar, Dan Coe, Seth H. Cohen, Cheng Cheng, Simon P. Driver, Brenda Frye, Lukas J. Furtak, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Rolf A. Jansen, Anton M. Koekemoer, Madeline A. Marshall, Mario Nonino, Aaron Robotham, Jake Summers, Stephen M. Wilkins, Christopher N. A. Willmer, Haojing Yan, Adi Zitrin   +34 more
doaj   +1 more source

USING THE METHODS OF WAVELET ANALYSIS AND SINGULAR SPECTRUM ANALYSIS IN THE STUDY OF RADIO SOURCE BL LAC

Odessa Astronomical Publications, 2014
We investigated the monitoring data of extragalactic source BL Lac. This monitoring was held withUniversityofMichigan26-meter radio  telescope. To study flux density of extragalactic source BL Lac at frequencies of 14.5, 8 and 4.8 GHz, the wavelet ...
G. I. Donskykh, M. I. Ryabov, A. I. Sukharev, M. Aller   +3 more
doaj   +1 more source

The JADES Origins Field: A New JWST Deep Field in the JADES Second NIRCam Data Release

The Astrophysical Journal Supplement Series
We summarize the properties and initial data release of the JADES Origins Field (JOF), the longest single pointing yet imaged with the James Webb Space Telescope (JWST).
Daniel J. Eisenstein, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Kevin Hainline, Peter Jakobsen, Roberto Maiolino, Nina Bonaventura, Andrew J. Bunker, Alex J. Cameron, Phillip A. Cargile, Emma Curtis-Lake, Ryan Hausen, Dávid Puskás, Marcia Rieke, Fengwu Sun, Christopher N. A. Willmer, Chris Willott, Stacey Alberts, Santiago Arribas, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Stefano Carniani, Stephane Charlot, Zuyi Chen, Jacopo Chevallard, Mirko Curti, Christa DeCoursey, Francesco D’Eugenio, Anna de Graaff, Eiichi Egami, Jakob M. Helton, Zhiyuan Ji, Gareth C. Jones, Nimisha Kumari, Nora Lützgendorf, Isaac Laseter, Tobias J. Looser, Jianwei Lyu, Michael V. Maseda, Erica Nelson, Eleonora Parlanti, Bernard J. Rauscher, Tim Rawle, George Rieke, Hans-Walter Rix, Wiphu Rujopakarn, Lester Sandles, Aayush Saxena, Jan Scholtz, Katherine Sharpe, Irene Shivaei, Charlotte Simmonds, Renske Smit, Michael W. Topping, Hannah Übler, Giacomo Venturi, Christina C. Williams, Joris Witstok, Charity Woodrum   +60 more
doaj   +1 more source

Evolution of Low Surface Brightness Ultrathin Galaxies: The Role of Dark Matter Halo and Bar Formation on Disk Thickness

The Astrophysical Journal
We investigate how stellar disks sustain their ultrathin structure throughout their evolution. We follow the evolution of ultrathin stellar disks with varying dark matter (DM) halo concentration ( c ) using collisionless N -body simulations with AREPO ...
K. Aditya, Arunima Banerjee
doaj   +1 more source

Mapping the Galaxy Color–Star Formation Rate Relation with Manifold Learning and Infrared Image Stacking

The Astrophysical Journal
Modern surveys present us with billions of faint galaxies for which we only have broadband images in ∼6–8 optical-to-near-infrared (NIR) filters. Galaxy star formation rates (SFRs) are difficult to estimate accurately without spectroscopic diagnostics or
Yu-Heng Lin, Daniel Masters, Andreas L. Faisst, Harry Teplitz, Olivier Ilbert, Matthieu Bethermin, Shoubaneh Hemmati, Vihang Mehta, Jason D. Rhodes, Gregory L. Walth   +9 more
doaj   +1 more source

A Simple Model of the Radio–Infrared Correlation Depending on Gas Surface Density and Redshift

The Astrophysical Journal
We introduce a simple parametric model of the radio–infrared correlation (i.e., the ratio between the IR luminosity and the 1.4 GHz radio luminosity, q _IR ) by considering the energy loss rate of high-energy cosmic-ray (CR) electrons governed by ...
Ilsang Yoon
doaj   +1 more source

Element Nucleosynthetic Origins from Abundance Spatial Distributions beyond the Milky Way

The Astrophysical Journal Letters
An element’s astrophysical origin should be reflected in the spatial distribution of its abundance, yielding measurably different spatial distributions for elements with different nucleosynthetic sites.
Zefeng Li, Mark R. Krumholz, Anna F. McLeod, A. Mark Swinbank, Emily Wisnioski, J. Trevor Mendel, Francesco Belfiore, Giovanni Cresci, Giacomo Venturi, Jia-Lai Kang   +9 more
doaj   +1 more source

The AGN fraction of submm-selected galaxies and contributions to the submm/mm-wave extragalactic background light [PDF]

, 2010
We present a comparison of the SCUBA Half Degree Extragalactic Survey (SHADES) at 450 μm, 850 μm and 1100 μm with Deep guaranteed time 15 μm AKARI FU-HYU survey data and Spitzer guaranteed time data at 3.6− 24 μm in the Lockman Hole East.
David Hughes, ITZIAR ARETXAGA MENDEZ
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