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20232026
most citedThe unusual planetary nebula nucleus in the Galactic open cluster M37 and six further hot white dwarf candidates

9 citations · 9 across the 7 of their papers we have counts for

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astro-ph.SR2026

Ionized Nebulae Around Two New Symbiotic Stars: GR Cygni and [D75] 141

Howard E. Bond, Calvin Carter, Sven E. Eklund +4

In the course of selecting targets for a spectroscopic survey of faint planetary-nebula nuclei, we encountered two anomalous cases of late-type variable stars surrounded by nebulos…

astro-ph.SR2026

K 1-6 is a photoionised ISM nebula shaped by a fast-moving hot white dwarf in a triple system

Jaroslav Merc, David Jones, Ana Escorza +22

K 1-6 has long been classified as a planetary nebula (PN) hosting a binary central star, yet it has remained poorly studied due to its faintness. The central star exhibits pronounc…

astro-ph.SR2026

Spectroscopic Survey of Faint Planetary-Nebula Nuclei. VIII. The Dwarf Barium Central Star of Kohoutek 1-9

Howard E. Bond, Peter Goodhew, Daniel Stern +2

In the course of our ongoing survey of faint planetary-nebula nuclei (PNNi), we obtained optical spectroscopy of the central star of the little-studied PN Kohoutek~1-9 (K 1-9). Its…

astro-ph.SR2025

A Bow-Shock Nebula Around the Z Camelopardalis-type Cataclysmic Variable FY Vulpeculae

Howard E. Bond, Calvin Carter, Eric Coles +3

We present deep images of the faint nebulosity StDr 90, which we have discovered surrounds the cataclysmic variable (CV) star FY Vulpeculae. Archival photometric and spectroscopic…

astro-ph.SR2025

Two More Bow Shocks and Off-Center Halpha Nebulae Associated with Nova-like Cataclysmic Variables

Howard E. Bond, Calvin Carter, Eric Coles +4

We report discoveries of bow-shock nebulae, seen in Halpha and [O III] 5007, around two cataclysmic variables (CVs): LS Pegasi and ASASSN-V J205457.73+515731.9 (hereafter ASASJ2054…

astro-ph.SR2024

Discovery of a Bow-Shock Nebula around the Z Cam-type Cataclysmic Variable SY Cancri

Howard E. Bond, Calvin Carter, David F. Elmore +3

We report the serendipitous discovery of a bow-shock nebula around the cataclysmic variable (CV) SY Cancri. In addition, SY Cnc lies near the edge of a faint Halpha-emitting nebula…

astro-ph.SR2023★ 9 cited

The unusual planetary nebula nucleus in the Galactic open cluster M37 and six further hot white dwarf candidates

Klaus Werner, Nicole Reindl, Roberto Raddi +6

Planetary nebulae in Galactic open star clusters are rare objects; only three are known to date. They are of particular interest because their distance can be determined with high…