Results 61 to 70 of about 32,530 (259)
Transits and secondary eclipses of HD 189733 with Spitzer [PDF]
, 2008 We present limits on transit timing variations and secondary eclipse depth variations at 8 microns with the Spitzer Space Telescope IRAC camera. Due to the weak limb darkening in the infrared and uninterrupted observing, Spitzer provides the highest ...
David Charbonneau +10 more
core +2 more sources
SPITZER SPACE TELESCOPE MID-IR LIGHT CURVES OF NEPTUNE [PDF]
The Astronomical Journal, 2016 ABSTRACT We have used the Spitzer Space Telescope in 2016 February to obtain high cadence, high signal-to-noise, 17 hr duration light curves of Neptune at 3.6 and 4.5 μm. The light curve duration was chosen to correspond to the rotation period of Neptune.
John Stauffer +11 more
openaire +6 more sources
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 Astronomical JournalTo 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 +9 more
doaj +1 more source
Infrared Imaging of Planetary Nebulae from the Ground Up
, 2006 New ground-based telescopes and instruments, the return of the NICMOS instrument on the Hubble Space Telescope (HST), and the recent launch of the Spitzer Space Telescope have provided new tools that are being utilized in the study of planetary nebulae ...
Hora, Joseph L.
core +2 more sources
A Post‐Launch Summary of the Science of NASA's Psyche Mission
AGU Advances, Volume 5, Issue 2, April 2024.Abstract Astronomical observations indicate that asteroid (16) Psyche is a large, high‐density (likely >3,400 kg·m−3), metal‐rich (30–55 vol. %) asteroid. Psyche may be remnant core material or it could be a primordial, undifferentiated metal‐rich object.
Steven D. Dibb +15 more
wiley +1 more source
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 +34 more
doaj +1 more source
How many Vesta‐like bodies existed in the asteroid belt?
Meteoritics &Planetary Science, Volume 59, Issue 4, Page 878-894, April 2024.Abstract Asteroid 4 Vesta is typically thought to be the parent body of the HED (howardite, eucrite, and diogenite) meteorites due to spectral similarities. The discovery of asteroids far from Vesta with HED‐like spectra like (1459) Magnya and HED‐like meteorites (e.g., NWA 011) with anomalous oxygen isotopic values compared to typical HEDs is evidence
T. H. Burbine +3 more
wiley +1 more source
The Astrophysical JournalWe 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 +10 more
doaj +1 more source
The Astrophysical Journal, 2023 We present an analysis of multiwavelength observations of the dark globule DC 314.8–5.1, using data from the Gaia optical, Two Micron All Star Survey near-infrared, and Wide-field Infrared Survey Explorer mid-infrared surveys, dedicated imaging with the ...
E. Kosmaczewski +5 more
doaj +1 more source