output
19922026
most citedAstropy: A Community Python Package for Astronomy

14.6k citations

Showing 2003 · astro-phShow all

14 papers · 2 filters

astro-ph2003★ 55 cited

The Early Optical Afterglow of GRB 030418 and Progenitor Mass Loss

E. S. Rykoff, D. A. Smith, P. A. Price +13

The ROTSE-IIIa telescope and the SSO-40 inch telescope, both located at Siding Spring Observatory, imaged the early time afterglow of GRB 030418. In this report we present observat…

astro-ph2003★ 7 cited

Superhumps, Magnetic Fields and the Mass-ratio in AM Canum Venaticorum

K. J. Pearson

We show that the observed K-velocities and periodicities of AM CVn can be reconciled given a mass ratio of 0.22 and a secondary star with a modest magnetic field of surface strengt…

astro-ph2003★ 20 cited

New Quasars Detected via Variability in the QUEST1 Survey

A. W. Rengstorf, S. L. Mufson, C. Abad +31

By observing the high galactic latitude equatorial sky in drift scan mode with the QUEST (QUasar Equatorial Survey Team) Phase 1 camera, multi-bandpass photometry on a large strip…

astro-ph2003★ 9 cited

The Newly Active R Coronae Borealis Star, V2552 Oph

E. Hesselbach, Geoffrey C. Clayton, Paul S. Smith

In 2001, V2552 Oph (CD -22 12017, HadV98) quickly faded by several magnitudes in a manner typical of the R Coronae Borealis (RCB) stars. Photometry of V2552 Oph obtained over 70 ye…

astro-ph2003★ 140 cited

SN 2003du: Signatures of the Circumstellar Environment in a Normal Type Ia Supernova?

C. L. Gerardy, P. Hoeflich, R. A. Fesen +6

We present observations of the Type Ia supernova 2003du and report the detectionof an unusual, high-velocity component in the Ca II infrared triplet, similar tofeatures previously…

astro-ph2003★ 39 cited

SMC-Type Interstellar Dust in the Milky Way

Lynne A. Valencic, Geoffrey C. Clayton, Karl Gordon +1

It is well known that the sightline toward HD 204827 in the cluster Trumpler 37 shows an UV extinction curve that does not follow CCM. However, when a dust component, foreground to…

astro-ph2003★ 33 cited

The Homogeneity of Interstellar Krypton in the Galactic Disk

Stefan I. B. Cartledge, David M. Meyer, J. T. Lauroesch

We present an analysis of high resolution HST Space Telescope Imaging Spectrograph (STIS) observations of Kr I 1236 Angstrom absorption in seven sight lines that probe a variety of…

astro-ph2003★ 33 cited

Winds in R Coronae Borealis Stars

Geoffrey C. Clayton, T. R. Geballe, Luciana Bianchi

We present new spectroscopic observations of the He I 10830 line in R Coronae Borealis (RCB) stars which provide the first strong evidence that most, if not all, RCB stars have…

astro-ph2003★ 177 cited

Observation of TeV Gamma Rays from the Crab Nebula with Milagro Using a New Background Rejection Technique

The Milagro Collaboration

The recent advances in TeV gamma-ray astronomy are largely the result of the ability to differentiate between extensive air showers generated by gamma rays and hadronic cosmic rays…

astro-ph2003★ 1.2k cited

A Quantitative Comparison of SMC, LMC, and Milky Way UV to NIR Extinction Curves

Karl D. Gordon, Geoffrey C. Clayton, K. A. Misselt +2

We present an exhaustive, quantitative comparison of all of the known extinction curves in the Small and Large Magellanic Clouds (SMC and LMC) with our understanding of the general…

astro-ph2003★ 79 cited

The Role of Polycyclic Aromatic Hydrocarbons in Ultraviolet Extinction. I. Probing small molecular PAHs

Geoffrey C. Clayton, Karl D. Gordon, Adolf N. Witt +7

We have obtained new STIS/HST spectra to search for structure in the ultraviolet interstellar extinction curve, with particular emphasis on a search for absorption features produce…

astro-ph2003

Fireballs, Flares and Flickering

K. J. Pearson, Keith Horne, Warren Skidmore

We review our understanding of the prototype ``Propeller'' system AE Aqr and we examine its flaring behaviour in detail. The flares are thought to arise from collisions between hig…

astro-ph2003★ 123 cited

Dust Grain-Size Distributions From MRN to MEM

Geoffrey C. Clayton, Michael J. Wolff, Ulysses J. Sofia +2

Employing the Maximum Entropy Method algorithm, we fit interstellar extinction measurements which span the wavelength range 0.125-3 micron. We present a uniform set of MEM model fi…

astro-ph2003★ 17 cited

Galaxy Formation in Triaxial Halos: Black Hole-Bulge-Dark Halo Correlation

Amr El-Zant, Isaac Shlosman, Mitch Begelman +1

The masses of supermassive black holes (SBHs) show correlations with bulge properties in disk and elliptical galaxies. We study the formation of galactic structure within flat-core…