Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Jacoby, George H."'
Thanks to the MUSE integral field spectrograph on the VLT, extragalactic distance measurements with the [O III] 5007 A planetary nebula luminosity function (PNLF) are now possible out to approx. 40 Mpc. Here we analyze the VLT/MUSE data for 20 galaxi
Externí odkaz:
http://arxiv.org/abs/2309.11603
We report initial results from an ongoing spectroscopic survey of central stars of faint planetary nebulae (PNe), obtained with the Low-Resolution Spectrograph on the Hobby-Eberly Telescope. The six PN nuclei (PNNi) discussed here all have strong emi
Externí odkaz:
http://arxiv.org/abs/2302.07158
Autor:
Soemitro, Azlizan A., Roth, Martin M., Weilbacher, Peter M., Ciardullo, Robin, Jacoby, George H., Monreal-Ibero, Ana, Castro, Norberto, Micheva, Genoveva
Publikováno v:
A&A 671, A142 (2023)
We perform a deep survey of planetary nebulae (PNe) in the spiral galaxy NGC 300 to construct its planetary nebula luminosity function (PNLF). We aim to derive the distance using the PNLF and to probe the characteristics of the most luminous PNe. We
Externí odkaz:
http://arxiv.org/abs/2301.03437
Autor:
Rector, Travis A., Shafter, Allen W., Burris, William A., Walentosky, Matthew J., Viafore, Kendall D., Strom, Allison L., Cool, Richard J., Sola, Nicole A., Crayton, Hannah, Pilachowski, Catherine A., Jacoby, George H., Corbett, Danielle L., Rene, Michelle, Hernandez, Denise
A long-term (1995-2016) survey for novae in the nearby Andromeda galaxy (M31) was conducted as part of the Research-Based Science Education initiative. During the course of the survey 180 nights of observation were completed at Kitt Peak, Arizona. A
Externí odkaz:
http://arxiv.org/abs/2207.05689
Autor:
Roth, Martin M., Jacoby, George H., Ciardullo, Robin, Davis, Brian D., Chase, Owen, Weilbacher, Peter M.
The [O III ] 5007 Planetary Nebula Luminosity Function (PNLF) is an established distance indicator that has been used for more than 30 years to measure the distances of galaxies out to ~15 Mpc. With the advent of the Multi-Unit Spectroscopic Explorer
Externí odkaz:
http://arxiv.org/abs/2105.01982
Autor:
Jacoby, George H., Hillwig, Todd C., Jones, David, Martin, Kayla, De Marco, Orsola, Kronberger, Matthias, Hurowitz, Jonathan L., Crocker, Alison F., Dey, Josh
We present the identification of 34 likely binary central stars (CSs) of planetary nebulae (PNe) from {\it Kepler/K2} data, seven of which show eclipses. Of these, 29 are new discoveries. Two additional CSs with more complicated variability are also
Externí odkaz:
http://arxiv.org/abs/2104.07934
Eight planetary nebulae have been identified as `born-again', a class of object typified by knotty secondary ejecta having low masses ($\sim$$10^{-4}$ M$_{\odot}$) with nearly no hydrogen. Abell 30, the archetype of the class, also belongs to a small
Externí odkaz:
http://arxiv.org/abs/2008.01488
We use imaging and spectroscopy from the Hubble Space Telescope (HST) to examine the properties of a bright planetary nebula (PN) projected within M31's young open cluster B477-D075. We show that the probability of a chance superposition of the PN on
Externí odkaz:
http://arxiv.org/abs/1909.08007
Autor:
Thomas, David, Kahn, Steven M., Bianco, Federica B., Ivezić, Željko, Raiteri, Claudia M., Possenti, Andrea, Peterson, John R., Burke, Colin J., Blum, Robert D., Jacoby, George H., Howell, Steve B., Madejski, Grzegorz
We present a unique method that allows the LSST to scan the sky for stellar variability on short timescales. The operational component of the strategy requires LSST to take star trail images. The image processing component uses deep learning to sift
Externí odkaz:
http://arxiv.org/abs/1812.02932
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