Planetary nebula luminosity function
WebOct 27, 2016 · (2) We present a distance-independent measure of absolute galaxy luminosity, and show how it correlates with galaxy properties such as color and velocity … WebMay 7, 2024 · The planetary nebula luminosity function (PNLF) has been established as an important extragalactic distance estimator 4, 5. However, stellar evolution models have …
Planetary nebula luminosity function
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WebThe luminosity function of planetary nebulae, in use for about two decades in extragalactic dist ance determinations, is still subject to controversial interpretations. Aims. The physical basis of the luminosity function is investigated by means of several evolutionary sequences of model planetary WebAug 14, 2004 · The [O III] 5007 planetary nebula luminosity function (PNLF) occupies an important place on the extragalactic distance ladder: it is the only standard candle that can be applied to all the large...
WebThe luminosity function of planetary nebula populations in galaxies at distances within 10–15 Mpc exhibits a cut-off at bright magnitudes and a functional form that is observed … WebN2 - We search for a change in the [O III] λ5007 planetary nebula luminosity function (PNLF) with metallicity by combining the planetary nebula (PN) observations of four metal-poor galaxies in the Local Group: M32, NGC 185, NGC 205, and the Small Magellanic Cloud. We show that the most likely magnitude cutoff for the PNs in our sample is 0.28 ...
WebOct 27, 2016 · function (PNLF). It is shown that the PNLF is not a power law, but instead has a sharp turnover. This behavior is most easily explained as arising from a sharp cutoff in the upper mass limit of... WebISM: planetary nebulae: general –galaxies: luminosity function, mass function 1. Introduction More than two decades ago, several authors reported that the bright end of …
WebAug 1, 2015 · The bright-end cutoff of the [O III] λ5007 planetary nebula luminosity function (PNLF) is insensitive to population age and metallicity, making it an excellent extragalactic standard candle. We...
WebFeb 26, 2013 · Because the PNLF works in large galaxies of all Hubble types, it is one of the best tools we have for cross-checking the results of other methods and identifying systematic offsets between the Population I and Population II distance ladders. how many bones compose the facial skeletonWebLuminosity functions of planetary nebulae contain information about the central star mass distributions, nebular, central star, and progenitor evolution, stellar death rates, and a … high pressure sodium light bulb hotWebOne of the great surprises of the late 1980s was the discovery that the [O III] λ5007 planetary nebula luminosity function (PNLF) could be used as a precision extragalactic standard candle. Despite the lack of any robust theory for the phenomenon, the technique passed a myriad of internal and external tests, and became an extremely reliable tool for obtaining … how many bones compose the bony orbitWebAbstract.The bright-end cutoff of the [O III] λ5007 planetary nebula luminosity function (PNLF) is insensitive to population age and metallicity, making it an excellent … high pressure sodium lumens per wattWebThe planetary nebula luminosity function (PNLF) is a standard candle that comprises a key rung on the extragalactic distance ladder. The method is based on the empirical evidence that the luminosity function of planetary nebulae (PNe) in the [O III] λ5007 nebular emission line reaches a maximum value that is approximately invariant with ... high pressure sodium lumens chartWebN2 - We search for a change in the [O III] λ5007 planetary nebula luminosity function (PNLF) with metallicity by combining the planetary nebula (PN) observations of four metal-poor … high pressure sodium light bulbs 70w type s62WebFeb 14, 2003 · The [O III] 5007 planetary nebula luminosity function (PNLF) occupies an important place on the extragalactic distance ladder. Since it is the only method that is applicable to all the large ... high pressure sodium outdoor fixtures