Can I read Anatomy of a post-starburst minor merger: a multi-wavelength WFC3 study of NGC 4150 on EtoBox?

Anatomy of a post-starburst minor merger: a multi-wavelength WFC3 study of NGC 4150 by Crockett, R. Mark; Kaviraj, Sugata; Silk, Joseph I.; Whitmore, Bradley C.; O'Connell, Robert W.; Mutchler, Max; Balick, Bruce; Bond, Howard E.; Calzetti, Daniela; Carollo, C. Marcella; Disney, Michael J.; Dopita, Michael A.; Frogel, Jay A.; Hall, Donald N. B.; Holtzman, Jon A.; Kimble, Randy A.; McCarthy, Patrick J.; Paresce, Francesco; Saha, Abhijit; Trauger, John T.; Walker, Alistair R.; Windhorst, Rogier A.; Young, Erick T.; Jeong, Hyunjin; Yi, Sukyoung K. is a scholarly article available to read on EtoBox.

What is Anatomy of a post-starburst minor merger: a multi-wavelength WFC3 study of NGC 4150 about?

(Abridged) We present a spatially-resolved near-UV/optical study of NGC 4150, using the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. Previous studies of this early-type galaxy (ETG) indicate that it has a large reservoir of molecular gas, exhibits a kinematically decoupled core (likely indication of recent merging) and strong, central H_B absorption (indicative of young stars). The core of NGC 4150 shows ubiquitous near-UV emission and remarkable dusty substructure. Our analysis shows this galaxy to lie in the near-UV green valley, and its pixel-by-pixel photometry exhibits a narrow range of near-UV/optical colours that are similar to those of nearby E+A (post-starburst) galaxies. We parametrise the properties of the recent star formation (age, mass fraction, metallicity and internal dust content) in the NGC 4150 pixels by comparing the observed near-UV/optical photometry to stellar models. The typical age of the recent star formation (RSF) is around 0.9 Gyrs, consistent with the similarity of the near-UV colours to post-starburst systems, while the morphological structure of the young component supports the proposed merger scenario. The RSF metallicity, represen

Author

Crockett, R. Mark; Kaviraj, Sugata; Silk, Joseph I.; Whitmore, Bradley C.; O'Connell, Robert W.; Mutchler, Max; Balick, Bruce; Bond, Howard E.; Calzetti, Daniela; Carollo, C. Marcella; Disney, Michael J.; Dopita, Michael A.; Frogel, Jay A.; Hall, Donald N. B.; Holtzman, Jon A.; Kimble, Randy A.; McCarthy, Patrick J.; Paresce, Francesco; Saha, Abhijit; Trauger, John T.; Walker, Alistair R.; Windhorst, Rogier A.; Young, Erick T.; Jeong, Hyunjin; Yi, Sukyoung K.

Published

2010

Language

EN