Science Archives Publication System

Tidal Structures of z ~ 1 Galaxies in the Hubble Deep Field

DOI: 10.1134/1.20369 Bibcode: 2000AstL...26...61R

Reshetnikov, V. P.

An analysis of the images of objects in the Northern Hubble Space Telescope Deep Field has revealed twelve galaxies with tidal tails at redshifts from 0.5 to 1.5. The integrated characteristics of the newly discovered tidal structures are found to be similar to those of the tails of local interacting galaxies. The space density of galaxies with ti…

2000 • Astronomy Letters

eHST 2

Alfvénicity of fluctuations associated with the Kelvin-Helmholtz instability

DOI: 10.1063/1.874151 Bibcode: 2000PhPl....7.2995P

Suess, S. T.; Parhi, S.

The velocity shear which exists between three layers in an ideal plasma is studied. This configuration is modeled as a jet (or, strictly speaking, a wake) embedded in a uniform medium using a magnetohydrodynamics (MHD) code developed for astrophysical jet simulations. Weak and strong magnetic fields are considered both inside and outside the jet w…

2000 • Physics of Plasmas

SOHO 2

High-Resolution Near-Infrared Imaging of the Powerful Radio Galaxy 3C 324 at z = 1.21 with the Subaru Telescope

DOI: 10.1093/pasj/52.1.43 Bibcode: 2000PASJ...52...43Y

Terada, Hiroshi; Usuda, Tomonori; Imanishi, Masatoshi +18 more

We have obtained high-resolution K^'-band images of the powerful z=1.206 radio galaxy 3C 324 with the Subaru telescope under seeing conditions of 0.^''3-0.^''4. We clearly resolved the galaxy and directly compared it to the optical images obtained with the Hubble Space Telescope. The host galaxy of 3C 324 is revealed …

2000 • Publications of the Astronomical Society of Japan

eHST 2

Rotational modulation of the ultraviolet line fluxes from the RS CVn star II Pegasi

Bibcode: 2000A&A...355..227S

Sarro, L. M.; Byrne, P. B.

The exceptional in-orbit performance of the International Ultraviolet Explorer (IUE) for more than eighteen years has made it possible to accumulate an invaluable database of ultraviolet observations of a wide variety of objects and, in particular of active stars. \citeN{BS98} -hereafter Paper I- have presented a multiwavelength campaign of observ…

2000 • Astronomy and Astrophysics

IUE eHST 2

The Magnetic Connectivity of Moss Regions

DOI: 10.1023/A:1005271300697 Bibcode: 2000SoPh..193..219Z

Kosovichev, A. G.; Hoeksema, J. T.; Scherrer, P. H. +2 more

A novel emission feature resembling moss was first identified in high-resolution TRACE Fe ix/x 171 Å images by Berger et al. (1999). The moss emission is characterized by dynamic arc-second scale, bright elements surrounding dark inclusions in images of solar active regions. Patches of moss elements, called moss regions, have a scale of 20-30 Mm. …

2000 • Solar Physics

SOHO 2

Separation between Gould Belt and Disk Stars in the Solar Neighbourhood

DOI: 10.1023/A:1002641506865 Bibcode: 2000Ap&SS.272...95C

Alfaro, E. J.; Cabrera-Caño, J.; Elias, F.

The adoption of a parametric model for the spatial distribution of Gould Belt and Galactic Disk stars allows the classification by their membership probabilities of stars from the Hipparcos catalogue in the Solar vicinity and the estimation of structural parameters for both stellar systems for several age groups. The observed kinematics of Gould B…

2000 • Astrophysics and Space Science

Hipparcos 2

Molecular gas and star formation in the host galaxy of I Zw 1

DOI: 10.1016/S1387-6473(00)00091-9 Bibcode: 2000NewAR..44..523E

Schinnerer, Eva; Eckart, Andreas; Tacconi, Linda

A recent analysis of high angular resolution NIR imaging and spectroscopic data in conjunction with Plateau de Bure interferometric mm-line observations indicate the presence of a circum-nuclear starburst ring of ∼1.5″ (1.5 kpc) diameter in I Zw 1. High angular resolution NIR imaging, using the MPE SHARP camera at the ESO NTT, HST V-band images, a…

2000 • New Astronomy Reviews

eHST 2

Measurement and Modeling of Solar EUV/UV Radiation

DOI: 10.1016/S1464-1917(00)00034-9 Bibcode: 2000PCEC...25..371T

Tobiska, W. K.

2000 • Physics and Chemistry of the Earth C

SOHO 2

The Dynamical and Time Variable Solar Transition Region Observed with the Coronal Diagnostic Pectrometer (CDS) on Soho

DOI: 10.1016/S0273-1177(99)00580-3 Bibcode: 2000AdSpR..25.1713K

Kjeldseth-Moe, O.

CDS on SOHO has detected an upper solar atmosphere that is more dynamic and time variable than previously expected. Exciting and unexpected is the strongly time variable and dynamic active region loops at transition region temperatures. Loops in the temperature range of 1-5 × 10⁵ K, extending 20 000 - 90 000 km above the solar surface, …

2000 • Advances in Space Research

SOHO 2

Interplanetary Disturbances Through the Minimum to the Maximum Solar Activities

DOI: 10.1016/S0273-1177(99)00609-2 Bibcode: 2000AdSpR..25.1951W

Kojima, Masayoshi; Tokumaru, Munetoshi; Watanabe, Takashi

A comparative study of three-dimensional propagation properties of transient interplanetary disturbances is made for two different phases of 11-year solar activity; early ascending phase (November 1997) and the maximum phase (June 1991). These events were apparently associated with solar flares. Principal data source is solar wind speed measuremen…

2000 • Advances in Space Research

SOHO 2