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19932026
most citedFirst M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

4.3k citations

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12 papers · 1 filter

astro-ph2000★ 47 cited

The Stellar Content and Distance of UGC 4483

A. E. Dolphin, L. Makarova, I. D. Karachentsev +7

We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V ~ 26.0 and I ~…

astro-ph2000

Identification of the donor in GRS 1915+105

J. Greiner, M. J. McCaughrean, J. G. Cuby +2

We report on the results of medium-resolution spectroscopy of GRS 1915+105 in the H and K band using the 8m VLT at ESO. We clearly identify absorption bandheads from CO12 and CO13.…

astro-ph2000★ 5 cited

The brightness of SN 1991T and the uniformity of decline-rate and colour corrected absolute magnitudes of supernovae Ia

T. Richtler, J. B. Jensen, J. Tonry +2

We present a distance to NGC 4527, the host galaxy of the type Ia SN 1991T, measured by surface brightness fluctuations. This supernova has been labelled ``peculiar'' both on the g…

astro-ph2000

Globular Clusters as Probes of the Virgo gE NGC 4472

Terry Bridges, Keith Ashman, Mike Beasley +4

We present radial velocities for 144 globular clusters around the Virgo gE NGC 4472 (M49), and ages and metallicities from co-added spectra of 131 clusters. We confirm our earlier…

gr-qc2000★ 4 cited

Viscous cosmologies in scalar-tensor theories for Kasner type metrics

M. Cataldo, S. del Campo, P. Salgado

In a viscous Bianchi type I metric of the Kasner form, it is well known that it is not possible to describe an anisotropic physical model of the universe, which satisfies the secon…

astro-ph2000★ 80 cited

Dynamical Constraints on the Formation of NGC 4472 and Its Globular Clusters

Stephen E. Zepf, Michael A. Beasley, Terry J. Bridges +4

We present new radial velocities for 87 globular clusters around the elliptical galaxy NGC 4472, and combine these with our previously published data to create a data set of veloci…