Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Kwitter, Karen"'
Autor:
Morisset, Christophe, Corradi, Romano L. M., García-Rojas, Jorge, Mampaso, Antonio, Jones, David, Kwitter, Karen B., Magrini, Laura, Villaver, Eva
Publikováno v:
A&A 674, L6 (2023)
Ueta & Otsuka (2021) proposed a method, named as the "Proper Plasma Analysis Practice", to analyze spectroscopic data of ionized nebulae. The method is based on a coherent and simultaneous determination of the reddening correction and physical condit
Externí odkaz:
http://arxiv.org/abs/2303.17067
Autor:
Kwitter, Karen B., Henry, R. B. C.
Publikováno v:
PASP, 134, Number 022001, 2022
In this review/tutorial we explore planetary nebulae as a stage in the evolution of low-to-intermediate-mass stars, as major contributors to the mass and chemical enrichment of the interstellar medium, and as astrophysical laboratories. We discuss ma
Externí odkaz:
http://arxiv.org/abs/2110.13993
Autor:
Galera-Rosillo, Rebeca, Mampaso, Antonio, Corradi, Romano L. M., García-Rojas, Jorge, Balick, Bruce, Jones, David, Kwitter, Karen B., Magrini, Laura, Villaver, Eva
Publikováno v:
A&A 657, A71 (2022)
To study the progenitors of PNe at the tip of the Planetary Nebula Luminosity Function (PNLF), we obtained the deepest existing spectra of a sample of PNe in the galaxy M31. Precise chemical abundances allow us to confront the theoretical yields for
Externí odkaz:
http://arxiv.org/abs/2110.01525
Autor:
Miller, Timothy R., Henry, Richard B. C., Balick, Bruce, Kwitter, Karen B., Dufour, Reginald J., Shaw, Richard A., Corradi, Romano L. M.
This paper represents the conclusion of a project that had two main goals: (1) to investigate to what extent planetary nebulae (PNe) are chemically homogeneous; and (2) to provide physical constraints on the central star properties of each PN. We acc
Externí odkaz:
http://arxiv.org/abs/1809.04002
Autor:
Miller, Timothy R., Henry, Richard B. C., Balick, Bruce, Kwitter, Karen B., Dufour, Reginald J., Shaw, Richard A., Corradi, Romano L. M.
This project sought to consider two important aspects of the planetary nebula NGC 3242 using new long-slit HST/STIS spectra. First, we investigated whether this object is chemically homogeneous by dividing the slit into different regions spatially an
Externí odkaz:
http://arxiv.org/abs/1608.00694
Autor:
Dufour, Reginald J., Kwitter, Karen B., Shaw, Richard A., Henry, Richard B. C., Balick, Bruce, Corradi, Romano L. M.
We present observations and initial analysis from an HST/STIS program to obtain the first co-spatial, UV-optical spectra of ten Galactic planetary nebulae (PNe). Our primary objective was to measure the critical emission lines of carbon and nitrogen
Externí odkaz:
http://arxiv.org/abs/1502.03797
Autor:
Liu, Charles T., Willman, Beth, Pepper, Joshua, Rutkowski, Michael, Norman, Dara, Cruz, Kelle, Bochanski, John, Lee, Hyun-chul, Isler, Jedidah, Gizis, John, Smith, J. Allyn, Moustakas, John, Wehner, Elizabeth, Alfred, Marcus, McGruder, Charles, Hoffman, Jennifer L., Kwitter, Karen, Carini, Michael, Bary, Jeff, Covey, Kevin R., Finn, Rose, Penprase, Brian, Gelderman, Richard, Schuler, Simon
The remarkable scientific return and legacy of LSST, in the era that it will define, will not only be realized in the breakthrough science that will be achieved with catalog data. This Big Data survey will shape the way the entire astronomical commun
Externí odkaz:
http://arxiv.org/abs/1410.2526
Spectroscopic data of two relatively [O III]-luminous-PNe have been obtained with the 10.4-m Gran Telescopio Canarias. M174 and M2496 are each ~1 degree from the center of M31 along opposite sides of its minor axis. The ensemble of these two distant
Externí odkaz:
http://arxiv.org/abs/1307.0472
Publikováno v:
ApJ, 753, 12 (2012)
We present spectroscopic observations and chemical abundances of 16 planetary nebulae (PNe) in the outer disk of M31. The [O III] 4363 line is detected in all objects, allowing a direct measurement of the nebular temperature essential for accurate ab
Externí odkaz:
http://arxiv.org/abs/1202.4933
Autor:
Henry, R. B. C., Kwitter, Karen B., Jaskot, Anne E., Balick, Bruce, Morrison, Michael A., Milingo, Jacquelynne B.
Publikováno v:
Astrophysical Journal, 724, 748 (2010)
We have obtained spectrophotometric observations of 41 anticenter planetary nebulae (PNe) located in the disk of the Milky Way. Electron temperatures and densities, as well as chemical abundances for He, N, O, Ne, S, Cl, and Ar were determined. Incor
Externí odkaz:
http://arxiv.org/abs/1009.1921