Science Archives Publication System

The ARAUCARIA Project: Deep Near-Infrared Survey of Nearby Galaxies. I. The Distance to the Large Magellanic Cloud from K-Band Photometry of Red Clump Stars

DOI: 10.1086/344075 Bibcode: 2002AJ....124.2633P

Gieren, W.; Pietrzyński, G.

We have obtained deep imaging in the near-infrared J and K bands for two nearby fields in the bar of the LMC with the ESO New Technology Telescope, under exquisite seeing conditions. The K, J-K color-magnitude diagrams constructed from these data are of outstanding photometric quality and reveal the presence of several hundred red clump stars. Usi…

2002 • The Astronomical Journal

Hipparcos 58

Oscillations Above Sunspots

DOI: 10.1023/A:1016238317702 Bibcode: 2002SoPh..207..259B

Fredvik, T.; Kjeldseth-Moe, O.; Brynildsen, N. +1 more

The 3-min oscillations in the sunspot atmosphere are discussed, based on joint observing with the Transition Region and Coronal Explorer - TRACE and the Solar and Heliospheric Observatory - SOHO. We find that the oscillation amplitude above the umbra increases with increasing temperature, reaches a maximum for emission lines formed close to 1-2× 1…

2002 • Solar Physics

SOHO 58

The Characterisation of Titan's Atmospheric Physical Properties by the Huygens Atmospheric Structure Instrument (Hasi)

DOI: 10.1023/A:1023688607077 Bibcode: 2002SSRv..104..395F

Rodrigo, R.; Barucci, M. A.; Fulchignoni, M. +25 more

The Huygens Atmospheric Structure Instrument (HASI) is a multi-sensor package which has been designed to measure the physical quantities characterising the atmosphere of Titan during the Huygens probe descent on Titan and at the surface. HASI sensors are devoted to the study of Titan's atmospheric structure and electric properties, and to provide …

2002 • Space Science Reviews

Cassini Huygens 58

Quiescent and Flaring Structure in RS Canum Venaticorum Stars

DOI: 10.1086/339730 Bibcode: 2002ApJ...570..799S

Sanz-Forcada, J.; Dupree, A. K.; Brickhouse, N. S.

Four of the most active RS CVn stars (V711 Tau, II Peg, σ Gem, and UX Ari) have been observed for a total of 3 Ms with the Extreme Ultraviolet Explorer satellite (EUVE) between 1992 and 2000 January. Flaring and quiescent states of extreme ultraviolet spectra (λλ70-740) and light curves (λλ75-175) have been analyzed to provide emission measure dis…

2002 • The Astrophysical Journal

IUE 58

Deep Lyα imaging of two z = 2.04 GRB host galaxy fields

DOI: 10.1051/0004-6361:20020427 Bibcode: 2002A&A...388..425F

Pedersen, H.; Fynbo, J. P. U.; Gorosabel, J. +8 more

We report on the results of deep narrow-band Lyα and broad-band U and I imaging of the fields of two Gamma-Ray bursts at redshift z=2.04 (GRB 000301C and GRB 000926). We find that the host galaxy of GRB 000926 is an extended (more than 2 arcsec), strong Lyα emitter with a rest-frame equivalent width of 71⁺²⁰_-15 Å. The galaxy …

2002 • Astronomy and Astrophysics

eHST 58

Evidence for chemical evolution in the spectra of high redshift galaxies

DOI: 10.1051/0004-6361:20021052 Bibcode: 2002A&A...393..809M

Böhm, A.; Stahl, O.; Noll, S. +13 more

Using a sample of 57 VLT FORS spectra in the redshift range 1.37<z<3.40 (selected mainly from the FORS Deep Field survey) and a comparison sample with 36 IUE spectra of local (z ~ 0) starburst galaxies we derive C IV and Si IV equivalent width values and estimate metallicities of starburst galaxies as a function of redshift. Assuming that a …

2002 • Astronomy and Astrophysics

IUE 58

Gasdynamics in NGC 5248: Fueling a Circumnuclear Starburst Ring of Super-Star Clusters

DOI: 10.1086/341196 Bibcode: 2002ApJ...575..156J

Wilson, Christine D.; Scoville, Nick; Laine, Seppo +4 more

Through observations and modeling, we demonstrate how the recently discovered large-scale bar in NGC 5248 generates spiral structure that extends from 10 kpc down to 100 pc, fuels star formation on progressively smaller scales, and drives disk evolution. Deep inside the bar, two massive molecular spirals cover nearly 180° in azimuth, show streamin…

2002 • The Astrophysical Journal

eHST 57

Abundances of Deuterium, Nitrogen, and Oxygen toward HZ 43A: Results from the FUSE Mission

DOI: 10.1086/339131 Bibcode: 2002ApJS..140...19K

Kruk, J. W.; Sembach, K. R.; Sonneborn, G. +12 more

We present an analysis of interstellar absorption along the line of sight to the nearby white dwarf star HZ 43A. The distance to this star is 68+/-13 pc, and the line of sight extends toward the north Galactic pole. Column densities of O I, N I, and N II were derived from spectra obtained by the Far Ultraviolet Spectroscopic Explorer (FUSE), the c…

2002 • The Astrophysical Journal Supplement Series

eHST 57

Proper motions of open clusters based on the TYCHO2 Catalogue. II. Clusters farther than 1 kpc

DOI: 10.1051/0004-6361:20020417 Bibcode: 2002A&A...388..168D

Dias, W. S.; Lépine, J. R. D.; Alessi, B. S.

We determined the mean absolute proper motion of 94 open clusters situated farther than 1 kpc from the Sun. The results are derived from the stellar proper motion data given in the Tycho2 Catalogue. The mean proper motion of the clusters and membership probability of individual stars were obtained from the proper motion data by applying the statis…

2002 • Astronomy and Astrophysics

Hipparcos 57

Galaxy properties in low X-ray luminosity clusters at z=0.25

DOI: 10.1046/j.1365-8711.2002.05909.x Bibcode: 2002MNRAS.337..256B

Smail, Ian; Bower, R. G.; Ziegler, B. L. +4 more

We present the first spectroscopic survey of intrinsically low X-ray luminosity clusters at z>> 0, with Hubble Space Telescope (HST) WFPC2 imaging and spectroscopy from Calar Alto and WHT-LDSS2. We study 172 confirmed cluster members in a sample of ten clusters at 0.23 < z < 0.3, with L_X<~ 4 × 10⁴³h^-2

2002 • Monthly Notices of the Royal Astronomical Society

eHST 57