We present first results from simultaneous ultraviolet (HST/GHRS) and X-ray (ASCA) observations of the 13.5s pulsar LMC X-4 taken in 1996 May. The ASCA observations covered 1.12 binary orbits (1.58 days) and the HST observations were centered on this for roughly 0.4 orbital phase coverage (0.56 days). The GHRS data are the highest resolution (both temporal and spectral) ultraviolet spectra ever...

background: polycystic ovary syndrome (pcos) is related to obesity and to major metabolic alterations including both insulin resistance and beta-cell dysfunction. ghrelin was identified as the endogenous ligand for the growth hormone secretagogue (ghs) receptor. the actions of ghrelin are carried out through interaction with specific receptor, named ghs-r. objective: in a case-control study, we...

Using the Goddard High Resolution Spectrograph (GHRS) onboard the Hubble Space Telescope, we have obtained high S/N echelle observations of the weak interstellar O I λ1356 absorption toward the stars γ Cas, Per, δ Ori, Ori, 15 Mon, τ CMa, and γ Ara. In combination with previous GHRS measurements in six other sightlines (ζ Per, ξ Per, λ Ori, ι Ori, κ Ori, and ζ Oph), these new observations yield...

We present the results of a GHRS program to monitor the absorption lines in the spectrum of the Seyfert 1 galaxy NGC 4151 caused by outflowing gas from the nucleus. Although we see subtle changes over the four year period in the GHRS spectra of the broader of the absorption features, the wavelength constancy of all the features is remarkable. The limits on the secular acceleration suggest that ...

We report the detection of atomic chlorine emissions in the atmosphere of Io using Hubble Space Telescope observations with the Goddard High Resolution Spectrograph (GHRS). The Cl I λ1349 dipole allowed and Cl I] λ1386 forbidden transition multiplets are detected at a signal to noise ratio (SNR) of 6 and 10, respectively, in a combined GHRS spectrum acquired from 1994 through 1996. Oxygen and s...

Deployment of the COSTAR mirrors for GHRS has successfully cancelled the deleterious eeects resulting from spherical aberration of the HST primary mirror. Prior to COSTAR, the Large Science Aperture (LSA) line spread function (LSF) was characterized by a Gaussian core nearly twice as broad as that provided by the instrumental resolution limit with extended non-Gaussian wings. After COSTAR the L...