A5022435015- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Star Formation Studies
- Planetary Science and Exploration
- Astrophysical Phenomena and Observations
- Calibration and Measurement Techniques
- Isotope Analysis in Ecology
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- Space Exploration and Technology
- Spectroscopy and Laser Applications
- Geophysics and Gravity Measurements
- Spacecraft and Cryogenic Technologies
- History and Developments in Astronomy
- Solar and Space Plasma Dynamics
- Scientific Research and Discoveries
- Spacecraft Design and Technology
- Radio Astronomy Observations and Technology
- Space Science and Extraterrestrial Life
- Atmospheric Ozone and Climate
- Nuclear Physics and Applications
California Institute of Technology
2015-2024
Infrared Processing and Analysis Center
2015-2024
Diego Portales University
2018
Korea Institute for Advanced Study
2018
Jet Propulsion Laboratory
1998-2018
Délégation Paris 7
2018
Université Paris Cité
2018
Institut für Palliative Care
1998-2018
South East Physics Network
2012
Australian Astronomical Observatory
2006
Between 1997 June and 2001 February the Two Micron All Sky Survey (2MASS) collected 25.4 Tbytes of raw imaging data covering 99.998% celestial sphere in near-infrared J (1.25 μm), H (1.65 Ks (2.16 μm) bandpasses. Observations were conducted from two dedicated 1.3 m diameter telescopes located at Mount Hopkins, Arizona, Cerro Tololo, Chile. The 7.8 s integration time accumulated for each point on sky strict quality control yielded a 10 σ point-source detection level better than 15.8, 15.1,...
The all sky surveys done by the Palomar Observatory Schmidt, European Southern and United Kingdom InfraRed Astronomical Satellite, Two Micron All Sky Survey have proven to be extremely useful tools for astronomy with value that lasts decades. Wide-field Infrared Explorer (WISE) is mapping whole following its launch on 2009 December 14. WISE began surveying 2010 January 14 completed first full coverage of July 17. survey will continue cover a second time until cryogen exhausted (anticipated...
(Abridged) We describe here the most ambitious survey currently planned in optical, Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST have unique capability faint time domain. The design is driven four main themes: probing dark energy matter, taking an inventory Solar System, exploring transient optical sky, mapping Milky Way. wide-field ground-based system sited at Cerro Pach\'{o}n northern Chile. telescope 8.4 m...
view Abstract Citations (1626) References (136) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Atlas of Quasar Energy Distributions Elvis, Martin ; Wilkes, Belinda J. McDowell, Jonathan C. Green, Richard F. Bechtold, Jill Willner, S. P. Oey, M. Polomski, Elisha Cutri, Roc We present an atlas the spectral energy distributions (SEDs) normal, nonblazar, quasars over whole available range (radio to 10 keV X-rays) electromagnetic spectrum. The primary (UVSX)...
We present the largest galaxies as seen in near-infrared (1–2 μm), imaged with Two Micron All Sky Survey (2MASS), ranging angular size from 1' to 15. highlight 100 sample. The span all Hubble morphological types, including elliptical galaxies, normal and barred spirals, dwarf peculiar classes. 2MASS Large Galaxy Atlas provides necessary sensitivity resolution examine detail morphologies near-infrared, which may be radically different those optical. Internal structures such bulges, warps,...
Before the 2-Micron All-Sky Survey (2MASS) began, only six objects were known with spectral types later than M9.5 V. In first 371 deg2 of actual 2MASS survey data, we have identified another 20 such spectroscopically confirmed using Low Resolution Imaging Spectrograph (LRIS) at W. M. Keck Observatory. Because TiO and VO bands, which dominate far-optical portions late-M spectra, disappear in these cooler dwarfs, define a new class "L" metallic oxides are replaced by hydrides neutral alkali...
The Two Micron All Sky Survey (2MASS) will observe over 1,000,000 galaxies and extended Galactic sources covering the entire sky at wavelengths between 1 2 μm. Most of these be newly cataloged objects. survey catalog have both high completeness reliability down to J = 15.0 mag Ks 13.5 mag, equivalent 1.6 2.9 mJy, respectively. Galaxies as small 10'' are resolved, those large ∼25 fully imaged. 2MASS discover never seen before in "zone avoidance" caused by obscuring effects dust gas, limited...
The Wide-field Infrared Survey Explorer (WISE) is an extremely capable and efficient black hole finder. We present a simple mid-infrared color criterion, W1 − W2 ⩾ 0.8 (i.e., [3.4]−[4.6] ⩾0.8, Vega), which identifies 61.9 ± 5.4 active galactic nucleus (AGN) candidates per deg2 to depth of ∼ 15.0. This implies much larger census luminous AGNs than found by typical wide-area surveys, attributable the fact that selection both unobscured (type 1) obscured 2) AGNs. Optical soft X-ray surveys...
The Wide-field Infrared Survey Explorer (WISE) has surveyed the entire sky at four infrared wavelengths with greatly improved sensitivity and spatial resolution compared to its predecessors, Astronomical Satellite Cosmic Background Explorer. NASA's Planetary Science Division funded an enhancement WISE data processing system called "NEOWISE" that allows detection archiving of moving objects found in data. NEOWISE mined images for a wide array small bodies our solar system, including...
We present the results of 2MASS Redshift Survey (2MRS), a ten-year project to map full three-dimensional distribution galaxies in nearby universe. The Two Micron All Sky (2MASS) was completed 2003 and its final data products, including an extended source catalog (XSC), are available online. XSC contains nearly million with Ks ⩽ 13.5 mag is essentially complete mostly unaffected by interstellar extinction stellar confusion down galactic latitude |b| = 5° for bright galaxies. Near-infrared...
We have carried out a survey of the north and south ecliptic poles, EP-N EP-S, respectively, with Spitzer Space Telescope Wide-field Infrared Survey Explorer (WISE). The primary objective was to cross-calibrate WISE Midcourse Experiment (MSX) photometric systems by developing set calibration stars that are common these infrared missions. poles were continuous viewing zones for due its polar-crossing orbit, making areas ideal both absolute internal calibrations. IRAC MIPS imaging covers...
NASA's Wide-field Infrared Survey Explorer (WISE) spacecraft has been brought out of hibernation and resumed surveying the sky at 3.4 4.6 um. The scientific objectives NEOWISE reactivation mission are to detect, track, characterize near-Earth asteroids comets. search for minor planets on December 23, 2013, first new object (NEO) was discovered six days later. As an infrared survey, detects based their thermal emission is equally sensitive high low albedo objects; consequently,...
We measured the K-band luminosity function using a complete sample of 4192 morphologically typed 2MASS galaxies with μ = 20 mag arcsec-2 isophotal magnitudes 7 < K20 11.25 spread over 2.12 sr. Early-type (T ≤ -0.5) and late-type > have similarly shaped functions, αe -0.92 ± 0.10 αl -0.87 0.09. The early-type are brighter, MK*e -23.53 0.06 compared to MK*l -22.98 mag, but less numerous, n*e (0.45 0.06) × 10-2 h3 Mpc-3 n*l (1.01 0.13) for H0 100 h km s-1 Mpc-1, such that slightly dominate...
With the NEOWISE portion of Wide-field Infrared Survey Explorer (WISE) project, we have carried out a highly uniform survey near-Earth object (NEO) population at thermal infrared wavelengths ranging from 3 to 22 μm, allowing us refine estimates their numbers, sizes, and albedos. The detected NEOs same way whether they were previously known or not, subject availability ground-based follow-up observations, resulting in discovery more than 130 new NEOs. survey's sensitivity, observing cadence,...
Variable X-ray and gamma-ray emission is characteristic of the most extreme physical processes in Universe, studying sources these energetic photons has been a major driver astronomy for past 50 years. Here we present multiwavelength observations unique selected transient, discovered by Swift, which was accompanied bright across electromagnetic spectrum, whose properties are unlike any previously observed source. We pinpoint event to center small, star-forming galaxy at redshift z=0.3534....
We present initial results from the Wide-field Infrared Survey Explorer (WISE), a four-band all-sky thermal infrared survey that produces data well suited to measuring physical properties of asteroids, and NEOWISE enhancement WISE mission allowing for detailed study Solar system objects. Using NEATM model fitting routine we compute diameters over 100,000 Main Belt asteroids their IR flux, with errors better than 10%. then incorporate literature values visible measurements (in form H absolute...
We have conducted a 4030 deg2 near-infrared proper motion survey using multi-epoch data from the Two Micron All-Sky Survey (2MASS). find 2778 candidates, 647 of which are not listed in SIMBAD. After comparison to Digitized Sky images, we that 107 our candidates lack counterparts at B, R, and I bands thus 2MASS-only detections. present results spectroscopic follow-up 188 targets include infrared-only sources along with selected optical-counterpart faint reduced motions or interesting colors....
The CatWISE2020 Catalog consists of 1,890,715,640 sources over the entire sky selected from WISE and NEOWISE survey data at 3.4 4.6 $\mu$m (W1 W2) collected 2010 Jan. 7 to 2018 Dec. 13. This dataset adds two years that used for CatWISE Preliminary (Eisenhardt et al., 2020), bringing total six times as many exposures spanning sixteen large a time baseline AllWISE catalog. other major change is detection list was generated using ${\it crowdsource}$ (Schlafly al. 2019), while software AllWISE....
We present two large catalogs of AGN candidates identified across 30,093 deg 2 extragalactic sky from the Wide-field Infrared Survey Explorer's AllWISE Data Release.Both are selected purely using WISE W1 and W2 bands.The R90 catalog consists 4,543,530 with 90% reliability, while C75 20,907,127 75% completeness.These reliability completeness figures were determined a detailed analysis UV-to near-IR spectral energy distributions ∼ 10 5 sources in 9 Boötes field.The selection criteria based on...
We present near-infrared spectra for a sample of T dwarfs, including 11 new discoveries made using the 2 Micron All Sky Survey. These objects are distinguished from warmer (L-type) brown dwarfs by presence methane absorption bands in 1-2.5 μm spectral region. A first attempt at classification scheme is made, based on strengths CH4 and H2O shapes 1.25, 1.6, 2.1 flux peaks. Subtypes T1 V-T8 V defined, indices useful presented. The subclasses appear to follow decreasing Teff scale, evolution...
Analysis of initial observations sky surveys has shown that the resulting photometric catalogs, combined with far-red optical data, provide an extremely effective method finding isolated, very low-temperature objects in general field. Follow-up have already identified more than 25 sources temperatures cooler latest M dwarfs. A comparison detailed model predictions (Burrows & Sharp 1999) indicates these L dwarfs between ≈2000 ± 100 K and 1500 K, while available trigonometric parallax data...
We report the discovery of a widely separated (258&farcs;3+/-0&farcs;4) T dwarf companion to Gl 570ABC system. This new component, 570D, was initially identified from Two Micron All-Sky Survey. Its near-infrared spectrum shows 1.6 and 2.2 µm CH4 absorption bands characteristic dwarfs, while its common proper motion with system confirms companionship. 570D (MJ=16.47+/-0.07) is nearly full magnitude dimmer than only other known companion, 229B, estimates L=&parl0;2.8+/-0.3&parr0;x10-6 L middle...