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2003
ABSTRACT Based on interferometric HI 21 cm line data we analyze the distribution of the neutral hydrogen in the environs of the optical ring nebulae around WR23 (WC6) and LS1887 (O8V). We identify the interstellar atomic gas bubbles associated with the optical ring nebulae Anon (WR 23) and RCW 52. Key Words: ISM: RING NEBULAE—STARS: EARLY-TYPE—STARS: INDIVIDUAL (HD92809, LS 1887)—STARS: WOLF-RAYET
Astronomy and Astrophysics
H I bubbles surrounding southern optical ring nebulae: Anon (WR 23) and RCW 52Monthly Notices of the Royal Astronomical Society
The radio and infrared counterparts of the ring nebula around HD 2115642010 •
2009 •
We report the detection of the radio and infrared counterparts of the ring nebula around the WN3(h) star HD211564 (WR152), located to the southwest of the HII region Sh2132. Using radio continuum data from the Canadian Galactic Plane Survey, we identified the radio counterparts of the two concentric rings, of about 9' and 16' in radius, related to the star. After applying a filling factor f = 0.05-0.12, electron densities and ionized masses are in the range 10-16 cm^-3 and 450-700 Mo, respectively. The analysis of the HI gas emission distribution allowed the identification of 5900 Mo of neutral atomic gas with velocities between -52 and -43 km/s probably linked to the nebula. The region of the nebula is almost free of molecular gas. Only four small clumps were detected, with a total molecular mass of 790 Mo. About 310 Mo are related to a small infrared shell-like source linked to the inner ring, which is also detected in the MSX band A. An IRAS YSO candidate is detected in...
Monthly Notices of the Royal Astronomical Society
Multifrequency study of the ring nebula SG 132009 •
Monthly Notices of the Royal Astronomical Society
An H i interstellar bubble surrounding WR 85 and RCW 1182005 •
We analyse the distribution of the interstellar matter in the environs of the Wolf-Rayet star LSS 3982 (= WR 85, WN6+ OB?) linked to the optical ring nebula RCW 118. Our study is based on neutral hydrogen 21-cm line data belonging to the Southern Galactic Plane Survey (SGPS).
Proceedings of the International Astronomical Union
Mapping the Physical and Chemical Conditions of the Ring Nebula2016 •
We observed the Planetary Nebula NGC 6720 with the Gemini Telescope and the Gemini Multi-Object Spectrographs. We obtained spatial maps of 36 emission-lines in the wavelength range between 3600 Å and 9400 Å. We derived maps of c(Hβ), electronic densities, electronic temperatures, ionic and elemental abundances, and Ionization Correction Factors (ICFs) in the source and investigated the mass-loss history of the progenitor. The elemental abundance results indicate the need for ICFs based on three-dimensional photoionization models.
The Astrophysical Journal
He 2‐113: A Multipolar Planetary Nebula with Rings around a Cool Wolf‐Rayet Star2000 •
Supernova Remnants and their X-Ray Emission
Optical Observations of SNRs and Ring Nebulae in the LMC1983 •
2015 •
2017 •
Communication & langages
L’écriture numérique ou l’écriture selon les machines. Enjeux philosophiques et pédagogiquesJurnal Ilmu Kesehatan Masyarakat
Predictive Models of Neonatal Mortality Incidence in Sub Purbolinggo East Lampung Regency of Lampung Province2017 •
2016 •
2015 •
Magyar Traumatológia Ortopédia Kézsebészet Plasztikai Sebészet
Bicondylaris tibia plató törések kettős lemezelése2016 •
Odontología Sanmarquina
Linfoma no Hodgkin de células grandes “B” en cavidad oral: presentación de un caso y revisión de la literatura2020 •
2008 •
Journal of Biological Chemistry
The sequence, organization, and expression of the major cysteine protease (cruzain) from Trypanosoma cruzi1992 •
2005 •
2010 •
2022 •
International journal of Geomatics and Geosciences
GIS-Based Mapping of Flood Vulnerability and Risk in the Bénin Niger River Valley2016 •
Bird Conservation International
Assessing the effects of different management scenarios on the conservation of small island vulture populations2020 •
Tehnicki Vjesnik-technical Gazette
The Approach to Stability Determination of Single Axis Positioning Regulation for the Model of TTT Manipulator2014 •
Global Biosecurity
Building Health System Resilience in Africa During the COVID-19 PandemicEast African Journal of Sciences
Influence of Mineral Nitrogen and Potassium Fertilizers on Ware and Seed Potato Production on Alluvial Soil in Eastern Ethiopia2014 •
Quarterly Journal of Speech
Review of "What it Feels Like: Visceral Rhetoric and the Politics of Rape Culture"2023 •
Helvetica Chimica Acta
Design and Synthesis of Aminoglycoside Antibiotics to Selectively Target 16S Ribosomal RNA Position 14082005 •