Results 1 to 10 of about 3,801 (208)

Miller and Urey in the Universe: detecting prebiotic molecules in star-forming regions

Revista Brasileira de Ensino de Física
Astronomical observations have revealed that the simple molecules used in the Miller and Urey experiments (H2O, CH4, NH3, and H2), along with methanol, carbon monoxide, and carbon dioxide, among many others, are abundant in solid form in molecular clouds
Caroline Antunes Rosa, Alexandre Bergantini, Marcelo Emilio, Enio Frota da Silveira, Laerte Andrade, Eduardo Janot Pacheco, Claudia Lage   +6 more
doaj   +1 more source

A Review of Lightweight Design for Space Mirror Core Structure: Tradition and Future

Machines, 2022
With the continuous improvement of the imaging quality requirement of the space optical system, the large-aperture mirror becomes the research focus. However, the increase of the aperture will increase the whole weight which results in high launch cost ...
Changhao Zhang, Zongxuan Li
doaj   +1 more source

Proper motions of young stellar outflows in the mid-infrared with Spitzer II HH 377/Cep E

New Journal of Physics, 2014
We have used multiple mid-infrared observations at 4.5 μ m obtained with the infrared array camera, of the compact $(\sim 1.4^{\prime} )$ young stellar bipolar outflow Cep E to measure the proper motion of its brightest condensations.
A Noriega-Crespo, A C Raga, A Moro-Martín, N Flagey, S J Carey   +4 more
doaj   +1 more source

Spitzer + Hubble Space Telescope Parallaxes of 13 Late T and Y Dwarfs

The Astronomical Journal
We present astrometric measurements for 13 cold brown dwarfs in the solar neighborhood ( d  
Federico Marocco, J. Davy Kirkpatrick, Richard L. Smart, Adam C. Schneider, Dan Caselden, Edgardo Costa, Michael C. Cushing, Maximiliano Dirk, Peter R. M. Eisenhardt, Jacqueline K. Faherty, Christopher R. Gelino, Marc J. Kuchner, Aaron M. Meisner, Rene A. Mendez, Robert A. Stiller, Edward L. Wright   +15 more
doaj   +1 more source

Dust Properties of Comets Observed by Spitzer

The Planetary Science Journal, 2023
As comets journey into the inner solar system, they deliver particulates and volatile gases into their comae that reveal the most primitive materials in the solar system.
David E. Harker, Diane H. Wooden, Michael S. P. Kelley, Charles E. Woodward   +3 more
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The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. VII. Long-period Variable Stars in the Nearest Starburst Dwarf Galaxy, IC 10

The Astronomical Journal
To identify long-period variable (LPV) stars in IC 10—the nearest starburst galaxy of the Local Group—we conducted an optical monitoring survey using the 2.5 m Isaac Newton Telescope with the wide-field camera (WFC) in the i band and V band from 2015 to ...
Mahtab Gholami, Atefeh Javadi, Hamidreza Mahani, Jacco Th. van Loon, Habib Khosroshahi, Elham Saremi, Iain McDonald, Samaneh Eftekhari, Yi Ren, Hamed Altafi   +9 more
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Debris Disk around Star HR 8799

, 2011
This infrared image, captured by the Spitzer Space Telescope shows a giant circle of very fine dust around the young star HR 8799, located to 129 light-years away in the constellation PegasusHave a prior knowledge about planetary systemEducação Superior::
Spitzer Space Telescope, National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory, California Institute of Technology   +3 more
core   +1 more source

A JWST/MIRI and NIRCam Analysis of the Young Stellar Object Population in the Spitzer I Region of NGC 6822

The Astrophysical Journal
We present an imaging survey of the Spitzer I star-forming region in NGC 6822 conducted with the NIRCam and MIRI instruments on board JWST. Located at a distance of 490 kpc, NGC 6822 is the nearest non-interacting low-metallicity (∼0.2 Z _⊙ ) dwarf ...
Laura Lenkić, Conor Nally, Olivia C. Jones, Martha L. Boyer, Patrick J. Kavanagh, Nolan Habel, Omnarayani Nayak, Alec S. Hirschauer, Margaret Meixner, B. A. Sargent, Tea Temim   +10 more
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Debris Disk around Star HR 8799

, 2016
This infrared image, captured by the Spitzer Space Telescope shows a giant circle of very fine dust around the young star HR 8799, located to 129 light-years away in the constellation PegasusHave a prior knowledge about planetary systemEducação Superior::
Spitzer Space Telescope, National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory, California Institute of Technology   +3 more
core   +1 more source

Hidden Giants in JWST's PEARLS: An Ultramassive z = 4.26 Submillimeter Galaxy that Is Invisible to HST

The Astrophysical Journal, 2023
We present a multiwavelength analysis using the Submillimeter Array (SMA), James Clerk Maxwell Telescope, NOEMA, JWST, the Hubble Space Telescope (HST), and the Spitzer Space Telescope of two dusty strongly star-forming galaxies, 850.1 and 850.2, seen ...
Ian Smail, Ugnė Dudzevičiūtė, Mark Gurwell, Giovanni G. Fazio, S. P. Willner, A. M. Swinbank, Vinodiran Arumugam, Jake Summers, Seth H. Cohen, Rolf A. Jansen, Rogier A. Windhorst, Ashish Meena, Adi Zitrin, William C. Keel, Cheng Cheng, Dan Coe, Christopher J. Conselice, Jordan C. J. D’Silva, Simon P. Driver, Brenda Frye, Norman A. Grogin, Anton M. Koekemoer, Madeline A. Marshall, Mario Nonino, Nor Pirzkal, Aaron Robotham, Michael J. Rutkowski, Russell E. Ryan Jr., Scott Tompkins, Christopher N. A. Willmer, Haojing Yan, Thomas J. Broadhurst, José M. Diego, Patrick Kamieneski, Min Yun   +34 more
doaj   +1 more source