A full-sky Hα template for microwave foreground prediction

DP Finkbeiner - The Astrophysical Journal Supplement Series, 2003 - iopscience.iop.org
ABSTRACT A full-sky H α map with 6 &arcmin;(FWHM) resolution is presented. This map is
a composite of the Virginia Tech Spectral line Survey (VTSS) in the north and the Southern …

Highly fluorescent [7] carbohelicene fused by asymmetric 1, 2-dialkyl-substituted quinoxaline for circularly polarized luminescence and electroluminescence

H Sakai, S Shinto, J Kumar, Y Araki… - The Journal of …, 2015 - ACS Publications
A new 1, 2-dialkylquinoxaline-fused [7] carbohelicene ([7] Hl-NAIQx) was designed and
synthesized by asymmetrically introducing two alkyl chains onto the quinoxaline unit. Direct …

Knots in nearby planetary nebulae

CR O'Dell, B Balick, AR Hajian… - The Astronomical …, 2002 - iopscience.iop.org
HST emission-line images of five of the arguably closest planetary nebulae have shown that
there is a progression of characteristics of their knots. This progression begins with dark …

A catalogue of integrated H α fluxes for 1258 Galactic planetary nebulae

DJ Frew, IS Bojičić, QA Parker - Monthly Notices of the Royal …, 2013 - academic.oup.com
We present a catalogue of new integrated Hα fluxes for 1258 Galactic planetary nebulae
(PNe), with the majority, totalling 1234, measured from the Southern Hα Sky Survey Atlas …

A “firework” of H2 knots in the planetary nebula NGC 7293 (the Helix nebula)

M Matsuura, AK Speck, BM McHunu… - The Astrophysical …, 2009 - iopscience.iop.org
We present a deep and wide field-of-view (4'× 7') image of the planetary nebula (PN) NGC
7293 (the Helix Nebula) in the 2.12 μm H 2 v= 1→ 0 S (1) line. The excellent seeing (0 farcs …

Expanding the Inventory of Molecule-rich Planetary Nebulae: New Observations of M4-17, Hu 1-1, M1-59, and Na 2

KR Gold, DR Schmidt, LM Ziurys - The Astrophysical Journal, 2024 - iopscience.iop.org
Molecular observations of four planetary nebulae (PNe), M4-17, Hu 1-1, M1-59, and Na 2,
were conducted at 1–3 mm using the Arizona Radio Observatory's 12 m antenna and …

Extended Structures of Planetary Nebulae Detected in H2 Emission∗

X Fang, Y Zhang, S Kwok, CH Hsia… - The Astrophysical …, 2018 - iopscience.iop.org
We present narrowband near-infrared images of a sample of 11 Galactic planetary nebulae
(PNe) obtained in the H 2 2.122 μm and Brγ 2.166 μm emission lines and the K c 2.218 μm …

Unraveling the Helix Nebula: its structure and knots

CR O'Dell, PR McCullough… - The Astronomical Journal, 2004 - iopscience.iop.org
Abstract Through Hubble Space Telescope (HST) imaging of the inner part of the main ring
of the Helix Nebula, together with CTIO 4 m images of the fainter outer parts, we have a view …

Evolution of the circumstellar molecular envelope. I. A bima co survey of evolved stars

D Fong, M Meixner, EC Sutton, A Zalucha… - The Astrophysical …, 2006 - iopscience.iop.org
This paper reports the results of a small imaging survey of eight evolved stars including two
AGB stars (IRC+ 10216 and Mira), five proto-planetary nebula (PPN) candidates (AFGL …

IPHAS extinction distances to planetary nebulae

C Giammanco, SE Sale, RLM Corradi… - Astronomy & …, 2011 - aanda.org
Aims. The determination of reliable distances to planetary nebulae (PNe) is a major difficulty
in the study of this class of objects in the Galaxy. The availability of new photometric surveys …