Results 61 to 70 of about 60,149 (264)

PHOTOMETRIC MONITORING OF THE COLDEST KNOWN BROWN DWARF WITH THE SPITZER SPACE TELESCOPE [PDF]

, 2016
Because WISE J085510.83−071442.5 (hereafter WISE 0855-0714) is the coldest known brown dwarf (∼250 K) and one of the Sun’s closest neighbors (2.2 pc), it offers a unique opportunity to study a planet-like atmosphere in an unexplored regime of temperature.
T. Esplin, K. Luhman, M. Cushing, K. Hardegree-Ullman, Jessica Trucks, A. Burgasser, Adam C. Schneider   +6 more
semanticscholar   +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

Focal plane calibration of the Spitzer space telescope [PDF]

IEEE Control Systems, 2009
The Spitzer space telescope (Spitzer) is currently NASA's largest and most sensitive infrared (IR) telescope in space. Spitzer's focal plane carries detectors from three science instruments, namely, the infrared array camera (IRAC), the infrared spectrograph (IRS), and the multiband imaging photometer for Spitzer (MIPS).
Bayard, David S., Kang, Bryan H., Brugarolas, Paul B., Boussalis, Dhemetrios   +3 more
openaire   +2 more sources

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

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
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

The Spitzer Space Telescope Extragalactic First Look Survey: 24 μm Data Reduction, Catalog, and Source Identification [PDF]

, 2006
We present the reduction of the 24 μm data obtained during the first cosmological survey performed by the Spitzer Space Telescope. Images of a region of sky at moderately high Galactic latitude (l = 88.°3, b = +34.°9) were obtained on 2003 December 9-11.
D. Fadda, F. Marleau, L. Storrie-Lombardi, D. Makovoz, D. Frayer, P. Appleton, L. Armus, S. Chapman, P. Choi, F. Fang, I. Heinrichsen, G. Helou, M. Im, M. Lacy, D. Shupe, B. Soifer, G. Squires, J. Surace, H. Teplitz, G. Wilson, L. Yan, S. S. C. CalTech, Seoul National University   +22 more
semanticscholar   +1 more source

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
doaj   +1 more source

Uncertainties in Ground‐Based Visual Double Star Measures

Astronomische Nachrichten, Volume 346, Issue 2, February 2025.
ABSTRACT Stellar masses are found from the orbital elements of binary systems which are, in turn, computed from weighted astrometric measures. Astrometric measures of double stars (their position angle and separation) rarely include uncertainties, and published binary star orbits rarely include the weighting systems used in the determination of the ...
Roderick R. Letchford, Graeme L. White
wiley   +1 more source

The infrared spectrograph on the Spitzer Space Telescope [PDF]

SPIE Proceedings, 2004
The Infrared Spectrograph (IRS) is one of three science instruments on the Spitzer Space Telescope. The IRS comprises four separate spectrograph modules covering the wavelength range from 5.3 to 38 μm with spectral resolutions, R~90 and 650, and it was optimized to take full advantage of the very low background in the space environment.
James R. Houck, Thomas L. Roellig, Jeff Van Cleve, William J. Forrest, Terry L. Herter, Charles R. Lawrence, Keith Matthews, Harold J. Reitsema, B. T. Soifer, Dan M. Watson, Dan Weedman, Marty Huisjen, John R. Troeltzsch, Donald J. Barry, J. Bernard-Salas, Craig Blacken, Bernhard R. Brandl, Vassilis Charmandaris, Daniel Devost, George E. Gull, Peter Hall, Charles P. Henderson, S. James U. Higdon, Bruce E. Pirger, Justin Schoenwald, Greg C. Sloan, Keven I. Uchida, Philip N. Appleton, Lee Armus, Martin J. Burgdorf, Sergio B. Fajardo-Acosta, Carl J. Grillmair, Jim G. Ingalls, Patrick W. Morris, Harry I. Teplitz   +34 more
openaire   +2 more sources