61 citations · 334 across the 18 of their papers we have counts for
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The Planetary Nebula in the 500 Myr old Open Cluster M37
Vasiliki Fragkou, Quentin A. Parker, Albert A. Zijlstra +3
We report confirmation of a large, evolved, bipolar planetary nebula and its blue, white dwarf central star as a member of the ~500 Myr old Galactic open star cluster M37 (NGC 2099…
History of the mass ejection in K 4-37: from the AGB to the evolved planetary nebula phase
L. F. Miranda, P. F. Guillén, L. Olguín +1
We present narrow-, broad-band, and WISE archive images, and high- and intermediate-resolution long-slit spectra of K 4-37, a planetary nebula that has never been analyzed in detai…
NGC 6309, a Planetary Nebula that Shifted from Round to Multipolar
Gabriel Rubio, Roberto Vazquez, Gerardo Ramos-Larios +4
We present new narrow-band Ha, [N II], and [O III] high-resolution images of the quadrupolar planetary nebula (PN) NGC 6309 that show in great detail its bipolar lobes and reveal n…
Optical and Infrared Imaging and Spectroscopy of the Multiple-Shell Planetary Nebula NGC 6369
Gerardo Ramos-Larios, Martin A. Guerrero, Roberto Vazquez +1
NGC 6369 is a double-shell planetary nebula (PN) consisting of a bright annular inner shell with faint bipolar extensions and a filamentary envelope. We have used ground- and space…