Results 81 to 90 of about 431,109 (228)

A Census of Thermally Pulsing AGB Stars in the Andromeda Galaxy and a First Estimate of Their Contribution to the Global Dust Budget

open access: yesThe Astrophysical Journal Supplement Series, 2022
We present a near-complete catalog of the metal-rich population of thermally pulsing asymptotic giant branch (AGB) stars in the northwest quadrant of M31.
Steven R. Goldman   +7 more
doaj   +1 more source

Explosion of Comet 17P/Holmes as revealed by the Spitzer Space Telescope [PDF]

open access: yesIcarus, 2010
51 pages. Some figures compressed (see real journal for full quality).
Reach, William T.   +4 more
openaire   +6 more sources

Detecting Clusters of Galaxies at High Redshift with the Spitzer Space Telescope [PDF]

open access: yesarXiv, 2005
We present an infrared adaptation of the Cluster Red-Sequence method. We modify the two filter technique of Gladders & Yee (2000) to identify clusters based on their R-[3.6] color. We apply the technique to the 4 degree^2 Spitzer First Look Survey and detect 123 clusters spanning the redshift range 0.09 < z < 1.4.
arxiv  

Spitzer Observations of Planetary Nebulae [PDF]

open access: yes, 2011
The Spitzer Space Telescope has three science instruments (IRAC, MIPS, and IRS) that can take images at 3.6, 4.5, 5.8, 8.0, 24, 70, and 160 microns, spectra over 5--38 microns, and spectral energy distribution over 52--100 microns. The Spitzer archive contains targeted imaging observations for more than 100 PNe. Spitzer legacy surveys, particularly the
arxiv   +1 more source

Observations of Extrasolar Planets During the non-Cryogenic Spitzer Space Telescope Mission [PDF]

open access: yes, 2007
Precision infrared photometry from Spitzer has enabled the first direct studies of light from extrasolar planets, via observations at secondary eclipse in transiting systems. Current Spitzer results include the first longitudinal temperature map of an extrasolar planet, and the first spectra of their atmospheres. Spitzer has also measured a temperature
arxiv   +1 more source

Novel Image State Ensemble Decomposition Method for M87 Imaging

open access: yesApplied Sciences, 2020
This paper proposes a new method of image decomposition with a filtering capability. The image state ensemble decomposition (ISED) method has generative capabilities that work by removing a discrete ensemble of quanta from an image to provide a range of ...
Timothy Ryan Taylor   +2 more
doaj   +1 more source

Multiphase Gas Interactions on Subarcsec Scales in the Shocked Intergalactic Medium of Stephan’s Quintet with JWST and ALMA

open access: yesThe Astrophysical Journal, 2023
We combine James Webb Space Telescope (JWST) and Hubble Space Telescope imaging with Atacama Large Millimeter Array CO(2–1) spectroscopy to study the highly turbulent multiphase intergalactic medium (IGM) in Stephan’s Quintet on 25–150 pc scales ...
P. N. Appleton   +14 more
doaj   +1 more source

The Supernova Legacy of Spitzer Space Telescope

open access: yes, 2019
The mid-infrared (mid-IR) range offers an obvious and advantageous choice in following the late-time evolution of supernovae (SNe). First, the peaks of their spectral energy distributions (SED) shift toward the IR after the photospheric phase; second, mid-IR observations are practically free of interstellar extinction, which is also an important factor
openaire   +3 more sources

A Search for a Sub-Earth Sized Companion to GJ 436 and a Novel Method to Calibrate Warm Spitzer IRAC Observations [PDF]

open access: yes, 2010
We discovered evidence for a possible additional 0.75 R_Earth transiting planet in the NASA EPOXI observations of the known M dwarf exoplanetary system GJ 436. Based on an ephemeris determined from the EPOXI data, we predicted a transit event in an extant Spitzer Space Telescope 8 micron data set of this star.
arxiv   +1 more source

Prominent Mid-infrared Excess of the Dwarf Planet (136472) Makemake Discovered by JWST/MIRI Indicates Ongoing Activity

open access: yesThe Astrophysical Journal Letters
We report on the discovery of a very prominent mid-infrared (18–25 μ m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the Mid-Infrared Instrument of the James Webb Space Telescope, along with previous ...
Csaba Kiss   +20 more
doaj   +1 more source

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