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Outputs (97)

MACS: A Quest for the Most Massive Galaxy Clusters in the Universe (2001)
Journal Article
Ebeling, H., Edge, A., & Henry, J. (2001). MACS: A Quest for the Most Massive Galaxy Clusters in the Universe. Astrophysical Journal, 553(1), 668-676. https://doi.org/10.1086/320958

We describe the design and current status of a new X-ray cluster survey aimed at the compilation of a statistically complete sample of very X-ray luminous (and thus, by inference, massive), distant clusters of galaxies. The primary goal of the Massiv... Read More about MACS: A Quest for the Most Massive Galaxy Clusters in the Universe.

Ultraluminous x-ray sources in external galaxies (2001)
Journal Article
King, A., Davies, M., Ward, M., Fabbiano, G., & Elvis, M. (2001). Ultraluminous x-ray sources in external galaxies. Astrophysical Journal Letters, 552(2), L109-L112. https://doi.org/10.1086/320343

We investigate models for the class of ultraluminous nonnuclear X-ray sources (i.e., ultraluminous compact X-ray sources [ULXs]) seen in a number of galaxies and probably associated with star-forming regions. Models in which the X-ray emission is ass... Read More about Ultraluminous x-ray sources in external galaxies.

On the dependence of spectroscopic indices of early-type galaxies on age, metallicity and velocity dispersion (2001)
Journal Article
Kuntschner, H., Lucey, J., Smith, R., Hudson, M., & Davies, R. (2001). On the dependence of spectroscopic indices of early-type galaxies on age, metallicity and velocity dispersion. Monthly Notices of the Royal Astronomical Society, 323(3), 615-629. https://doi.org/10.1046/j.1365-8711.2001.04263.x

We investigate the Mg–σ and Fe–σ relations in a sample of 72 early-type galaxies drawn mostly from cluster and group environments using a homogeneous data set which is well calibrated on to the Lick/IDS system. The small intrinsic scatter in Mg at a... Read More about On the dependence of spectroscopic indices of early-type galaxies on age, metallicity and velocity dispersion.

Galaxy number counts - V. Ultradeep counts: the Herschel and Hubble deep fields (2001)
Journal Article
Metcalfe, N., Shanks, T., Campos, A., McCracken, H., & Fong, R. (2001). Galaxy number counts - V. Ultradeep counts: the Herschel and Hubble deep fields. Monthly Notices of the Royal Astronomical Society, 323(4), 795-830. https://doi.org/10.1046/j.1365-8711.2001.04168.x

We present u, b, r and i galaxy number counts and colours from both the North and South Hubble Space Telescope Deep Fields and the William Herschel Deep Field. The latter comprises a 7×7 arcmin2 area of sky, reaching b28.5 at its deepest. Following M... Read More about Galaxy number counts - V. Ultradeep counts: the Herschel and Hubble deep fields.

The 2dF QSO Redshift Survey - V. The 10k catalogue (2001)
Journal Article
Croom, S., Smith, R., Boyle, B., Shanks, T., Loaring, N., Miller, L., & Lewis, I. (2001). The 2dF QSO Redshift Survey - V. The 10k catalogue. Monthly Notices of the Royal Astronomical Society, 322(4), L29-L36. https://doi.org/10.1046/j.1365-8711.2001.04474.x

We present a catalogue comprising over 10 000 QSOs covering an effective area of 289.6 deg2, based on spectroscopic observations with the 2-degree Field (2dF) instrument at the Anglo-Australian Telescope. This catalogue forms the first release of the... Read More about The 2dF QSO Redshift Survey - V. The 10k catalogue.

Diffraction-limited 800 nm imaging with the 2.56 m Nordic optical telescope (2001)
Journal Article
Baldwin, J., Tubbs, R., Cox, G., Mackay, C., Wilson, R., & Andersen, M. (2001). Diffraction-limited 800 nm imaging with the 2.56 m Nordic optical telescope. Astronomy & Astrophysics, 368(1), L1-L4. https://doi.org/10.1051/0004-6361%3A20010118

A quantitative assessment is presented of diffraction-limited stellar images with Strehl ratios of 0.25-0.30 obtained by selection of short-exposure CCD images of stars brighter than +6 m at 810 nm with the Nordic Optical Telescope.

Probing the inner region of Cygnus X-1 in the low/hard state through its x-ray broadband spectrum (2001)
Journal Article
Di Salvo, T., Done, C., Życki, P., Burderi, L., & Robba, N. (2001). Probing the inner region of Cygnus X-1 in the low/hard state through its x-ray broadband spectrum. Astrophysical Journal, 547(2), 1024-1033. https://doi.org/10.1086/318396

We present the broadband X-ray spectrum of Cyg X-1 in the low/hard state as observed by the instruments on board BeppoSAX. The spectrum spans from 0.1 to 200 keV, allowing the total accretion luminosity to be observed rather than extrapolated, corres... Read More about Probing the inner region of Cygnus X-1 in the low/hard state through its x-ray broadband spectrum.