A substructure inside spiral arms and a mirror image across the galactic meridian

DOI	Trouver le DOI : https://doi.org/10.3847/0004-637X/821/1/53
Auteur	Rechercher : Vallée, Jacques P.¹
Affiliation du nom	Conseil national de recherches du Canada. Infrastructure scientifique nationale
Format	Texte, Article
Sujet	Disc galaxy; Galaxy formation; Galaxy: fundamental parameters; Galaxy structure; ISM kinematics and dynamics
Résumé	Though the galactic density wave theory is over 50 years old and is well known in science, it has been difficult to say whether it fits our own Milky Way disk. Here we show a substructure inside the spiral arms. This substructure is reversing with respect to the Galactic Meridian (longitude zero), and crosscuts of the arms at negative longitudes appear as mirror images of crosscuts of the arms at positive longitudes. Four lanes are delineated: a mid-arm (extended ¹²CO gas at the mid-arm, H i atoms), an in-between offset by about 100 pc (synchrotron, radio recombination lines), an in-between offset by about 200 pc (masers, colder dust), and an inner edge (hotter dust seen in mid-IR and near-IR).
Date de publication	2016-04-11
Maison d’édition	IOP Publishing
Dans	The Astrophysical Journal 821, nº 1, 53 : 1–12.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	23000424
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	4df1ca4a-a16a-436a-b97c-695fdeb43591
Enregistrement créé	2016-07-15
Enregistrement modifié	2020-03-16