Cosmography of the local universe: data processed for the Tully-Fisher relation
Description
This phD thesis is part of the COSFLOS project. Its goal is to understand the galaxy structure evolution in the local universe. For this purpose, we make use of the Tully-Fisher relation in order to measure the distances for galaxies within 80 Mpc. My research area in the project is to collect, measure and analyze the data needed for the Luminosity Line Width (LLW). This relation is a direct link between intrinsic luminosity of a spiral galaxy and its maximal gas rotation velocity. The best way to compute this velocity is to measure HI line width. Including my new observations and measurements, the current extragalactic database EDD contains 15 411 HI profiles. To obtain the apparent magnitude needed for the distances, I improve the ARCHANGEL software, implementing new displays. We took a great care to a special parameter: the inclination of observed galaxy. Finally, I present the Antlia cluster, one of the cluster I use to calibrate the slope of the LLW. I start with the candidates selection, then with observations to finally obtain the distances for the calibration. (author)
Abstract (French)
Ce travail de these s'inscrit dans le projet a long terme COSFLOS qui a pour but de comprendre l'evolution des structures de l'univers local. Pour cela nous utilisons la relation de Tully-Fisher qui permet de mesurer des distances independamment de la loi de Hubble pour des galaxies spirales dans un rayon de 80 Mpc. Mon travail a consiste a collecter, mesurer et analyser les donnees necessaires pour cette relation egalement appelee Luminosity LineWidth (LLW). Cette relation relie la luminosite intrinseque d'une galaxie a la vitesse maximale de rotation de son gaz neutre. La meilleure facon d'obtenir cette vitesse est de mesurer la largeur de la raie de l'hydrogene neutre (HI) a 21 cm. J'ai effectue de nouvelles observations ainsi que de nouvelles mesures au sein de ce programme, qui aujourd'hui compte 15411 profils HI dans la base de donnees EDD. J'ai egalement ameliore l'interface graphique du logiciel de photometrie ARCHANGEL qui nous permet d'obtenir les magnitudes apparentes afin de calculer les distances. Nous verrons que nous avons porte une grande attention sur le calcul du parametre d'inclinaison de la galaxie observee. Enfin, parmi tous les echantillons en notre possession, j'ai choisi d'etudier plus en detail l'amas de galaxies d'Antlia qui permettra une calibration de la pente de la LLW. Ce travail a commence par la selection des candidates, a continue avec les observations puis les mesures et pour se finir sur la determination des distances necessaires a la calibration de la relation de Tully-Fisher. (auteur)Files
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Additional details
Additional titles
- Original title (French)
- Cosmographie de l'univers local: analyse de donnees pour la relation de Tully-Fisher
Publishing Information
- Imprint Pagination
- 171 p.
- Report number
- FRNC-TH--13953
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 54032241
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ALGORITHMS; CALIBRATION; CHARGE-COUPLED DEVICES; COMPUTERIZED SIMULATION; DISTANCE; GALAXY CLUSTERS; INCLINATION; LINE WIDTHS; LUMINOSITY; PHOTOMETRY; RADIO TELESCOPES; RELICT RADIATION; ROTATION; SPIRAL CONFIGURATION; TYPE I SUPERNOVAE; VELOCITY
- Descriptors DEC
- ANTENNAS; BINARY STARS; CONFIGURATION; ELECTRICAL EQUIPMENT; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; ERUPTIVE VARIABLE STARS; MATHEMATICAL LOGIC; MICROWAVE RADIATION; MOTION; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; RADIO EQUIPMENT; SEMICONDUCTOR DEVICES; SIMULATION; STARS; SUPERNOVAE; TELESCOPES; VARIABLE STARS
Optional Information
- Notes
- 120 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses