@misc{10481/80617,
year = {2019},
month = {3},
url = {https://hdl.handle.net/10481/80617},
abstract = {Minor mergers play a crucial role in galaxy evolution. UGC 10214 (the Tadpole galaxy) is a prime example of this process in which a dwarf galaxy has interacted with a large spiral galaxy similar to 250 Myr ago and produced a perturbed disc and a giant tidal tail. We used a multi-wavelength dataset that partly consists of new observations (H alpha, HI, and CO) and partly of archival data to study the present and past star formation rate (SFR) and its relation to the gas and stellar mass at a spatial resolution down to 4 kpc. UGC 10214 is a high-mass (stellar mass M-star = 1.28 x 10(11) M-circle dot) galaxy with a low gas fraction (M-gas/M-star = 0.24), a high molecular gas fraction (M-H2/M-HI = 0.4), and a modest SFR (2-5 M-circle dot yr(-1)). The global SFR compared to its stellar mass places UGC 10214 on the galaxy main sequence (MS). The comparison of the molecular gas mass and current SFR gives a molecular gas depletion time of about similar to 2 Gyr (based on H alpha), comparable to those of normal spiral galaxies. Both from a comparison of the H alpha emission, tracing the current SFR, and far-ultraviolet (FUV) emission, tracing the recent SFR during the past tens of Myr, and also from spectral energy distribution fitting with CIGALE, we find that the SFR has increased by a factor of about 2-3 during the recent past. This increase is particularly noticeable in the centre of the galaxy where a pronounced peak of the H alpha emission is visible. A pixel-to-pixel comparison of the SFR, molecular gas mass, and stellar mass shows that the central region has had a depressed FUV-traced SFR compared to the molecular gas and the stellar mass, whereas the H alpha-traced SFR shows a normal level. The atomic and molecular gas distribution is asymmetric, but the position-velocity diagram along the major axis shows a pattern of regular rotation. We conclude that the minor merger has most likely caused variations in the SFR in the past that resulted in a moderate increase of the SFR, but it has not perturbed the gas significantly so that the molecular depletion time remains normal.},
organization = {Spanish Government	AYA2016-76219-P
Spanish Ministerio de Economia y Competitividad from the European Regional Development Funds (FEDER)	AYA2014-53506-P
AYA2017-84897-P},
organization = {Junta de Andalucia},
organization = {European Commission	FQM108},
organization = {Consejeria de Conocimiento, Investigacion y Universidad		
Junta de Andalucia},
organization = {Junta de Andalucia},
organization = {European Commission	SOMM17/6105/UGR},
organization = {National Science Foundation (NSF)	AST-1501294},
organization = {Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT	1170618},
organization = {National Aeronautics & Space Administration (NASA)	NAS5-98034},
organization = {Alfred P. Sloan Foundation},
organization = {National Science Foundation (NSF)		
United States Department of Energy (DOE)},
organization = {University of Arizona},
organization = {Brazilian Participation Group},
organization = {United States Department of Energy (DOE)},
organization = {University of Cambridge},
organization = {Carnegie Mellon University},
organization = {University of Florida},
organization = {French Participation Group},
organization = {German Participation Group},
organization = {Harvard University},
organization = {Instituto de Astrofisica de Canarias},
organization = {Michigan State/Notre Dame/JINA Participation Group},
organization = {Johns Hopkins University},
organization = {United States Department of Energy (DOE)},
organization = {Max Planck Institute for Astrophysics		
Max Planck Institute for Extraterrestrial Physics},
organization = {New Mexico State University},
organization = {New York University},
organization = {Ohio State University},
organization = {Pennsylvania State University},
organization = {University of Portsmouth},
organization = {Princeton University},
organization = {Spanish Participation Group},
organization = {University of Tokyo},
organization = {University of Utah},
organization = {Vanderbilt University},
organization = {University of Virginia},
organization = {University of Washington},
organization = {Yale University},
organization = {National Aeronautics & Space Administration (NASA)},
organization = {CSA (Canada)},
organization = {NAOC (China)},
organization = {French Atomic Energy Commission		
Centre National D'etudes Spatiales		
Centre National de la Recherche Scientifique (CNRS)},
organization = {Agenzia Spaziale Italiana (ASI)},
organization = {Spanish Government},
organization = {SNSB (Sweden)},
organization = {UK Research & Innovation (UKRI)},
organization = {Science & Technology Facilities Council (STFC)},
organization = {UKSA (UK)},
organization = {National Aeronautics & Space Administration (NASA)},
organization = {Centre National de la Recherche Scientifique (CNRS)},
organization = {Max Planck Society},
organization = {IGN (Spain)		
062-05},
publisher = {EDP},
keywords = {Galaxies: interactions},
keywords = {ISM: molecules},
keywords = {Galaxies: evolution},
keywords = {Galaxies: ISM},
keywords = {Galaxies: star formation},
keywords = {Galaxies: individual: UGC10214},
title = {Star formation and gas in the minor merger UGC 10214},
doi = {10.1051/0004-6361/201833896},
author = {Rosado Belza, D. and Lisenfeld, Ute and Verley, Simon},
}