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• W4291007615 endingPage "A32" @default.
• W4291007615 startingPage "A32" @default.
• W4291007615 abstract "We present the results of the analysis of LR optical-NIR spectra (0.6-2.4 um) of a sample 47 YSOs in the ChaI and II star-forming clouds. These data are part of the POISSON project (Protostellar Optical-Infrared Spectral Survey on NTT). The aim is to determine the accretion luminosity (Lacc) and mass accretion rate (Macc) of the sources through the analysis of the detected emission features. We also aim at verifying the reliability and consistency of the existing empirical relationships connecting emission line luminosity and Lacc. We employ five tracers (OI-6300A, Ha, CaII-8542A, Pab, and Brg) to derive the accretion luminosity. The tracers provide Lacc values showing different scatters when plotted as a function of L*. The Brg seems to be the most reliable, because it gives the minimum Lacc dispersion over the entire range of L*, whereas the other tracers provide much more scattered Lacc values, which are not expected for our homogeneous sample. The comparison between Lacc(Brg) and Lacc obtained from the other tracers also shows systematic differences among the empirical relationships. These may probably be ascribed to different excitation mechanisms contributing to the line emission, which may vary between our sample and those where the relationships were calibrated. Adopting the Lacc derived from Brg, we find Lacc=0.1L*-1L* for all sources, and Macc of the order of 10^-7-10^-9 Msun/yr. The Macc derived in ChaI are proportional to M*^2, as found in other low-mass star-forming regions. The discrepancies observed in the case of Lacc(Brg) and Lacc(Pab) can be related to different intrinsic Pab/Brg, ratios. The derived ratios show the existence of two different emission modalities, one that agrees with predictions of both wind and accretion models, the other suggesting optically thick emission from relatively small regions (10^21-10^22 cm^-3) with gas at low temperatures (<4000K)." @default.
• W4291007615 created "2022-08-13" @default.
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• W4291007615 date "2011-09-27" @default.
• W4291007615 modified "2023-10-11" @default.
• W4291007615 title "POISSON project" @default.
• W4291007615 cites W1966136987 @default.
• W4291007615 cites W1966351789 @default.
• W4291007615 cites W1967340141 @default.
• W4291007615 cites W1970422115 @default.
• W4291007615 cites W1980100166 @default.
• W4291007615 cites W1981800857 @default.
• W4291007615 cites W1983270357 @default.
• W4291007615 cites W1986743369 @default.
• W4291007615 cites W1994277384 @default.
• W4291007615 cites W1996772391 @default.
• W4291007615 cites W1999430606 @default.
• W4291007615 cites W2000562328 @default.
• W4291007615 cites W2001892464 @default.
• W4291007615 cites W2004682822 @default.
• W4291007615 cites W2007567284 @default.
• W4291007615 cites W2009654447 @default.
• W4291007615 cites W2009868804 @default.
• W4291007615 cites W2012455239 @default.
• W4291007615 cites W2014960797 @default.
• W4291007615 cites W2022429968 @default.
• W4291007615 cites W2024977654 @default.
• W4291007615 cites W2033700568 @default.
• W4291007615 cites W2042753720 @default.
• W4291007615 cites W2046793067 @default.
• W4291007615 cites W2059555227 @default.
• W4291007615 cites W2061820060 @default.
• W4291007615 cites W2064258363 @default.
• W4291007615 cites W2066162503 @default.
• W4291007615 cites W2069696243 @default.
• W4291007615 cites W2071771519 @default.
• W4291007615 cites W2071966587 @default.
• W4291007615 cites W2074299830 @default.
• W4291007615 cites W2078646167 @default.
• W4291007615 cites W2080430275 @default.
• W4291007615 cites W2081087406 @default.
• W4291007615 cites W2081913217 @default.
• W4291007615 cites W2084372030 @default.
• W4291007615 cites W2091391324 @default.
• W4291007615 cites W2099116887 @default.
• W4291007615 cites W2111457413 @default.
• W4291007615 cites W2113137879 @default.
• W4291007615 cites W2114624208 @default.
• W4291007615 cites W2118849686 @default.
• W4291007615 cites W2126700402 @default.
• W4291007615 cites W2127867276 @default.
• W4291007615 cites W2128204973 @default.
• W4291007615 cites W2140220905 @default.
• W4291007615 cites W2142220522 @default.
• W4291007615 cites W2147809071 @default.
• W4291007615 cites W2149077061 @default.
• W4291007615 cites W2149808951 @default.
• W4291007615 cites W2154370253 @default.
• W4291007615 cites W2162810728 @default.
• W4291007615 cites W2167635287 @default.
• W4291007615 cites W2987218337 @default.
• W4291007615 cites W3098231028 @default.
• W4291007615 cites W3099075102 @default.
• W4291007615 cites W3099758390 @default.
• W4291007615 cites W3099807012 @default.
• W4291007615 cites W3100196555 @default.
• W4291007615 cites W3100236290 @default.
• W4291007615 cites W3101063428 @default.
• W4291007615 cites W3101646687 @default.
• W4291007615 cites W3101656867 @default.
• W4291007615 cites W3101932956 @default.
• W4291007615 cites W3102775437 @default.
• W4291007615 cites W3103015692 @default.
• W4291007615 cites W3104031505 @default.
• W4291007615 cites W3105395781 @default.
• W4291007615 cites W3105600224 @default.
• W4291007615 cites W3121128601 @default.
• W4291007615 cites W3123556332 @default.
• W4291007615 cites W3147751559 @default.
• W4291007615 cites W4214774345 @default.
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• W4291007615 doi "https://doi.org/10.1051/0004-6361/201117454" @default.
• W4291007615 hasPublicationYear "2011" @default.
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