Tip of the Red Giant Branch Distances. I. Optimization of a Maximum Likelihood Algorithm

Simple item page
dc.creatorMakarov, Dmitry
dc.creatorMakarova, Lidia
dc.creatorRizzi, Luca
dc.creatorTully, R. Brent
dc.creatorDolphin, Andrew E.
dc.creatorSakai, Shoko
dc.creatorShaya, Edward J.
dc.date2006-03-03
dc.date.accessioned2026-07-07T11:25:19Z
dc.date.available2026-07-07T11:25:19Z
dc.descriptionAccurate distances to galaxies can be determined from the luminosities of stars at the Tip of the Red Giant Branch (TRGB). We use a Maximum Likelihood algorithm to locate the TRGB in galaxy color-magnitude diagrams. The algorithm is optimized by introducing reliable photometric errors and a completeness characterization determined with artificial star experiments. The program is extensively tested using Monte-Carlo simulations, artificial galaxies, and a sample of nearby dwarf galaxies observed with HST/WFPC2 and ACS. Our procedure is shown to be reliable, to have good accuracy, and to not introduce any systematic errors. The methodology is especially useful in cases where the TRGB approaches the photometric limit and/or the RGB is poorly populated.
dc.descriptionsubmitted to AJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0603073
dc.identifierhttp://arxiv.org/abs/astro-ph/0603073
dc.identifierAstron.J.132:2729-2742,2006
dc.identifierdoi:10.1086/508925
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195472
dc.subjectAstrophysics
dc.titleTip of the Red Giant Branch Distances. I. Optimization of a Maximum Likelihood Algorithm
dc.typetext

Files

Collections

arXiv