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- California Institute of TechnologyUS13 papers
- University of ArizonaUS12 papers
- Goddard Space Flight CenterUS10 papers
- Stanford UniversityUS10 papers
- Center for Astrophysics Harvard & SmithsonianUS9 papers
- Search for Extraterrestrial IntelligenceUS8 papers
- University of California, Santa CruzUS8 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Johns Hopkins UniversityUS7 papers
- University of Hawaii SystemUS7 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS6 papers
- Los Alamos National LaboratoryUS6 papers
6 papers · 1 filter
Imaging the Solar Tachocline by Time-Distance Helioseismology
Junwei Zhao, Thomas Hartlep, A. G. Kosovichev +1
The solar tachocline at the bottom of the convection zone is an important region for the dynamics of the Sun and the solar dynamo. In this region, the sound speed inferred by globa…
The 0.8-14.5 micron Spectra of Mid-L to Mid-T Dwarfs: Diagnostics of Effective Temperature, Grain Sedimentation, Gas Transport, and Surface Gravity
D. C. Stephens, S. K. Leggett, Michael C. Cushing +6
We present new 5.2-14.5 micron low-resolution spectra of 14 mid-L to mid-T dwarfs, as well as 3.0-4.1 micron spectra for five of these dwarfs. These data are supplemented by existi…
First Magnetic Field Detection on a Class I Protostar
Christopher M. Johns-Krull, Thomas P. Greene, Greg W. Doppmann +1
Strong stellar magnetic fields are believed to truncate the inner accretion disks around young stars, redirecting the accreting material to the high latitude regions of the stellar…
NGC7538 IRS1 - an ionized jet powered by accretion
G. Sandell, W. M. Goss, M. Wright +1
Analysis of high spatial resolution VLA images shows that the free-free emission from NGC7538 IRS1 is dominated by a collimated ionized wind. We have re-analyzed high angular resol…
Traveling Waves of Magnetoconvection and the Origin of the Evershed Effect in Sunspots
Irina N. Kitiashvili, Alexander G. Kosovichev, Alan A. Wray +1
Discovered in 1909 the Evershed effect represents strong mass outflows in sunspot penumbra, where the magnetic field of sunspots is filamentary and almost horizontal. These flows p…
Evidence for an Edge-On Disk around the Young Star MWC 778 from Infrared Imaging and Polarimetry
Marshall D. Perrin, William D. Vacca, James R. Graham
MWC 778 is an unusual and little-studied young stellar object located in the IC 2144 nebula. Recent spectroscopy by Herbig and Vacca (2008) suggested the presence of an edge-on cir…