... The HDF Project. ... How to obtain the data catalogs. Observing logs and ancillary information. Technical information on the data reduction pipeline. Technical information on image registration and combination. Technical information on source detection and photometry. HDF Clearinghouse -- followup observations and analysis. ... Hubble Deep Field Academy -- Educational Resource for Middle School students . Hubble Deep Field South The Space Telescope Science Institute home page . ...

Light element abundances in NGC 5128 from planetary nebulae Jeremy R. Walsh, ESO George H. Jacoby, WIYN Reynier Pelletier, Kapteyn Lab., Groningen Nic A. Walton, IoA, Cambridge Planetary nebulae · Low mass (~0.7-7M^ј ) main sequence stars undergo a planetary nebula (PN) phase at ages 0.1-10Gyr depending on initial mass , following the red-giant branch (RGB) and asymptotic g iant branch (AGB) to the white dwarf cooling track · L eng th of PN phase ~104 yr (depending on core mass ) · ...

... Normalised spectra of all central stars of planetary nebulae observed in the 075.D-0289 campaign ordered by increasing effective temperature from top to the bottom. ... The presence of a magnetic field in the central star may be the reason for this lack of symmetry, but observational works published in the literature have so far reported contradictory results. ... We determine the magnetic field from spectropolarimetric observations of ten central stars of planetary nebulae. ... Results. ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Star formation: probing magnetic fields and their spheres of influence . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... Magnetic fields play a key role in the early formation of low mass stars, from regulating the initial collapse of the protostar, controlling accretion from large circumstellar disks and their evolution along the early main sequence. ... Return to list of thesis topics . ...

... Listed below are questions submitted by users of "The Exploration of the Earth's Magnetosphere" and the answers given to them. ... The ones included below are either of the sort that keeps coming up again and again--the danger of solar eruptions, the reversal of the Earth's magnetic field, etc.-- or else the answers make a special point, going into extra details which might interest other users. ... Radiation Belts and Manned Space Flight . ... Capturing the Energy of the Solar Wind . ...

... The are two main sources of magnetospheric electric fields. The other is the solar wind related, dawn-to-dusk directed ("convection") field, and the other is the co-rotation electric field related to the rotation of the Earth along its spin axis. The electric fields have a strong effect on the drift paths of the magnetospheric plasma . ... The energetic particles, following the magnetic drifts more readily, are also affected by the convection field. ... Space Physics Text Book of Oulu ...

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Astronomers using the worldтАЩs largest radio telescope, at Arecibo, Puerto Rico, have discovered flaring radio emission from an ultra-cool star, not much warmer than the planet Jupiter, shattering the previous record for the lowest stellar temperature at which radio waves were detected. ...

... Astronomers of the SAO together with an international group of scientists have proposed an explanation to the long-standing mystery of why magnetic fields are more common amongst cool white dwarf stars than amongst young and hotter ones. ... As the result magnetic white dwarfs demonstrate excess in their frequencies in the temperature range below 14000K. The authors also show that the strongly magnetic white dwarfs are of the oldest stars of the Galaxy originated from intermediate-mass relic stars. ...

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Nowadays at the Department the experimental and theoretical investigations, including astronomical and ionospheric observations, active experiments with space vehicles are taking place. ... Solar Corona physics and erruptive phenomenae. ... Stellar astronomy. ... The Department has organized and put into practice more then 50 expeditions for observation of Solar ecllipces, aurorae polaris, comets, meteor streams, controlled space experiments, and also for investigations of geophysical characteristics. ...

Meeting of the MKSP Nearby Galaxies Working Group Cambridge 2009 March 25 09:30-12:00 Participants: P.Alexander, J.Anderson, R.Beck, C.Chyzy, A.Fletcher, J.GeisbЭsch, G.Heald, J.Riley, H.RЖttgering, A.Scaife 1. ... Simulations of Faraday DP is needed (see above). ... Joint observations with the Survey KSP The MKSP needs spectral information about nearby galaxies from the SKSP surveys to choose best cases for deep integrations, and to determine magnetic field strengths (taking into account CRE losses). ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... stars . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do neutron stars generate steady magnetic fields? ... How can a neutron star exist if those neutrons are just going to pieces? Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... In typical nightly use, the wide field and planetary telescope and cameras record images of favorably placed objects in the sky, including constellations, bright variable stars, nebulae through narrow-band filters, comets, the Moon, and planets. ... Shared Skies telescopes are available for use by students at the University of Louisville and the University of Southern Queensland, and by teachers and students in middle and high schools mentored by faculty at the universities. ...

... Fields Observed . ... Data Archive . ... Complete Optical and X-ray data for all ChaMPlane fields are available through the DS9 VO interface . ... functionality of DS9 is available to manipulate the results in addition to those provided by the "Champlane tools" You can select images, compare . ... our region of interest has been selected by drawing a red square region on the image. at bottom left the high res optical image of that selected region, and on the right is the X-ray image. ...

ARCSAT ID NUMBER: AS02 DESCRIPTIVE TITLE: Constraining the magnetic fields of transiting exoplanets through ground-based near-UV observations PI: Jake Turner OBSERVER(S): Jake Turner (Graduate Student: University of Virginia) Apurva Oza (Graduate Student: University of Virginia) Robin Leiter (Undergraduate Student ... The magnetic field of a transiting exoplanet can be constrained by observing asymmetries in their near-UV light curves (Vidotto, Jardine Helling 2011a; Vidotto et al. ...

Bigbang Forum Message . Forums: . ... The Sun Energy Source Is Not Nuclear Fusion But Magnetic Fields. ... The sun is not heated by fusion reaction but by magnetic fields coming from the galactic center. The nuclear fusion is a by product of the magnetic fields heating. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

Magnetic stars, 2004, 247-249 Study of magnetic fields of different luminosity hot stars Butkovskaya V., Plachinda S. Crimean Astrophysical Observatory, Nauchny, Crimea, 98409, Ukraine Abstract. Circular sp ectrop olarimetric observations of four different luminosity hot stars were obtained in an attempt to detect magnetic fields via longitudinal ° Zeeman effect in the sp ectral line HeI 6678.149 A: Pegasi (Sp B2 IV), Orionis (Sp B2 I I I), Orionis (Sp B3 I I Ie), Persei (Sp B1 Ib). ...

... A second method to account for illumination problems in the flat fields is to remove the large scale pattern from the flat field itself. This is useful if there are no reasonable blank sky calibration frames and the astronomical exposures are evenly illuminated but the flat fields are not. ... Obviously, after having obtained the illumination corrected flat field it is reasonable to replace the original flat fields by the corrected flat fields in the reduction table. ...

Tsfasman and Vl\u adu\c t defined the set of invariants $\{\phi_q, q \text{ is a prime power, } \mathbb{R} \text{ or }\mathbb{C}\}$ of infinite global fields, but the properties of this sets are still not known. ... In this direction, I will talk about the constructions of infinite global fields having $n$ prescribed non-zero invariants, and of others having $n$ prescribed zero invariants. ...

Galileo Finds Giant Iron Core in Jupiter's Moon Io . Jupiter's volcano-pocked moon Io has been found by NASA's Galileo spacecraft to have a giant iron core that takes up half its diameter, scientists report in today's issue of Science magazine. The spacecraft also has detected a large "hole" in Jupiter's magnetic field near Io, leading to speculation about whether Io possesses its own magnetic field. If so, it would be the first planetary moon known to have one. ... Space History Galileo . ...