activity
20032018
most citedAn analysis of ultraviolet spectra of Extreme Helium Stars and new clues to their origins

46 citations · 164 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.SR2018★ 14 cited

The Double Dust Envelopes of R Coronae Borealis Stars

Edward J. Montiel, Geoffrey C. Clayton, B. E. K. Sugerman +6

The study of extended, cold dust envelopes surrounding R Coronae Borealis (RCB) stars began with their discovery by IRAS. RCB stars are carbon-rich supergiants characterized by the…

astro-ph.SR2014★ 3 cited

High-resolution optical spectroscopy of the R Coronae Borealis star V532 Ophiuchi at maximum light

N. Kameswara Rao, David L. Lambert, Vincent M. Woolf +1

High-resolution optical spectra of the R Coronae Borealis (RCB) star V532 Oph at light maximum are discussed. The absolute visual magnitude M_V of the star is found to be -4.9 \pm…

astro-ph.SR2013★ 22 cited

Dust around R Coronae Borealis stars: II. Infrared emission features in a H-poor environment

D. A. Garcia-Hernandez, N. Kameswara Rao, D. L. Lambert

Residual Spitzer/IRS spectra for a sample of 31 R Coronae Borealis (RCB) stars are presented and discussed in terms of narrow emission features superimposed on the quasi-blackbody…

astro-ph.SR2012★ 8 cited

The hot R Coronae Borealis star DY Centauri is a binary

N. Kameswara Rao, David L. Lambert, D. A. Garcia-Hernandez +3

The remarkable hot R Coronae Borealis star DY Cen is revealed to be the first and only binary system to be found among the R Coronae Borealis (RCB) stars and their likely relatives…

astro-ph.SR2012★ 16 cited

High-resolution optical spectroscopy of DY Cen: diffuse interstellar bands in a proto-fullerene circumstellar environment?

D. A. Garcia-Hernandez, N. Kameswara Rao, David L. Lambert

We search high-resolution and high-quality VLT/UVES optical spectra of the hot R Coronae Borealis (RCB) star DY Cen for electronic transitions of the C60 molecule and diffuse inter…

astro-ph.SR2011★ 32 cited

Dust around R Coronae Borealis stars: I. Spitzer/IRS observations

D. A. Garcia-Hernandez, N. Kameswara Rao, David L. Lambert

Spitzer/IRS spectra from 5 to 37 um for a complete sample of 31 R Coronae Borealis stars (RCBs) are presented. These spectra are combined with optical and near-infrared photometry…