Science Archives Publication System

Refining the Fundamental Parameters of the 3 Post-AGB Stars: HR 4049, HD 52961 and HD 133656 Using Improved Model Atmospheres

DOI: 10.1023/A:1001503402184 Bibcode: 1998Ap&SS.255..487M

Parthasarathy, M.; Monier, R.

1998 • Astrophysics and Space Science

ISO 2

Globular Clusters, Hipparcos, and the Age of the Galaxy

DOI: 10.1073/pnas.95.1.8 Bibcode: 1998PNAS...95....8R

Reid, Neill

We discuss the impact of the results from the recent Hipparcos astrometric satellite on distance estimates of galactic globular clusters. Recalibrating the clusters not only implies a relatively small change in the distance to the Large Magellanic Cloud, and hence a rescaling of several estimates of the Hubble constant, but also leads to significa…

1998 • Proceedings of the National Academy of Science

Hipparcos 2

The nature of dark matter in our Galaxy.

Bibcode: 1998AcPPB..29.1905S

Chabrier, G.; Schaeffer, R.; Mera, D.

The existence within galaxies of unidentified matter whose only action is gravity has been known since nearly two decades. Important information on its location has been obtained in the very last few years, thanks to deep stellar surveys, to the microlensing events detected by the EROS, MACHO and OGLE experiments that trace dark stellar-size objec…

1998 • Acta Physica Polonica B

Hipparcos 2

A first HIPPARCOS contribution to the light elements problem

Bibcode: 1998A&A...330L..25C

Spite, M.; Crifo, F.; Spite, F.

{The interpretation of the observations of the light elements requires the knowledge of the evolutionary status of the observed stars. The HIPPARCOS accurate parallaxes solve several cases of ambiguous status. For example, it is shown that, since HD 84937 is a subgiant, its (6Li) abundance is compatible with the predictions of the standard models …

1998 • Astronomy and Astrophysics

Hipparcos 2

Distance Scales After HIPPARCOS

DOI: 10.1023/A:1002110327632 Bibcode: 1998Ap&SS.263..209F

Feast, M. W.

A general review is given of the use of Hipparcos data to calibrate basic distance indicators.

1998 • Astrophysics and Space Science

Hipparcos 2

Crowded-field photometry from HST-imaging

DOI: 10.1051/aas:1998354 Bibcode: 1998A&AS..127..327S

Thomsen, B.; Sodemann, M.

We present a thorough investigation of stellar photometry based on HST imaging of crowded fields at 85arcsec and 10arcsec from the centre of the high-surface brightness elliptical galaxy M 32. The Principal Investigators of the present archive data have elsewhere presented an impressive colour-magnitude diagram of the field at 85arcsec . Based on …

1998 • Astronomy and Astrophysics Supplement Series

eHST 2

Infrared Observations of High-Mass X-Ray Binaries

DOI: 10.1023/A:1001190413686 Bibcode: 1998Ap&SS.255..199K

Waters, L. B. F. M.; van Loon, J. Th.; Kaper, L. +2 more

We present the first results of our ISO program on High-Mass X-ray Binaries (HMXBs). Infrared photometry, obtained at different aspect angles of the systems, is used to investigate the massive star's disrupted stellar wind and the accretion flow towards the compact X-ray source. Scenarios for massive binary evolution predict that HMXBs receive a l…

1998 • Astrophysics and Space Science

ISO 2

ISOPHOT Observations of the RS CVN -Type Star HR 7428

DOI: 10.1023/A:1001154800483 Bibcode: 1998Ap&SS.255..237R

Pagano, I.; Messina, S.; Rodonò, M. +3 more

1998 • Astrophysics and Space Science

ISO 2

Dust Emission from AGB Stars ISO-SWS Observations of Long-Period Variables

DOI: 10.1023/A:1001582412720 Bibcode: 1998Ap&SS.255..445A

Hron, J.; Kerschbaum, F.; Aringer, B.

1998 • Astrophysics and Space Science

ISO 2

Sensitivity of Low Frequency Oscillations to Updated Solar Models

DOI: 10.1023/A:1005149005617 Bibcode: 1998SSRv...85..117P

Provost, J.; Berthomieu, G.; Morel, P.

A large number of acoustic frequencies have already been detected, leading to a "seismic" model of the Sun rather close to the actual standard solar models. The core however is not yet well constrained by these observations and frequencies of low degree, low frequency modes which penetrate deeply into the solar core are needed. We present here a s…

1998 • Space Science Reviews

SOHO 2