Abstract
Previous studies of nearby galaxies show large discrepancies between different star formation (SF) indicators on large (≳ 100 pc, or even global) scales: the strikingly complex interplay of young stars, dust and ionized gas are the primary cause of this variance. The few galaxies in the HST Archive with both Hα and mid-UV images show this complex geometry to extend down to pc scales.
To provide a benchmark for understanding SF processes at spatial resolutions that are unattainable from the ground in normal and star-bursting, barred and non-barred galaxies, I am conducting an Hα SNAPshot survey with ACS/WFC of ~24 galaxies of all Hubble types, that are nearby but beyond the Local Group and that were previously imaged with HST in the mid-UV and red.
These data can be used to address a wide range of astrophysical problems, but the immediate goals are to: (1) spatially resolve the dust clouds and filaments which strongly affect mid-UV and Hα derived SF rates, (2) test how the large-scale correlation between Hα and mid-UV flux breaks down on pc scales, and (3) model the propagation of star formation by comparing the SF over time scales of ~100 Myr (via mid-UV) and ~5 Myr (via Hα). This will (4) significantly improve our insight into, and calibration of SF in UV-bright galaxies at high z, and into the cosmic SF history.
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References
Beckman et al. 2000, AJ 119, 2728
Bell & de Jong 2000, MNRAS 312, 497
Bell & Kennicutt 2001, ApJ 548, 681
Bell et al. 2002, ApJ 565, 994
Bell 2002, ApJ 577, 150
Caldwell et al. 1991, ApJ 370, 526
Calzetti et al. 1994, ApJ 429, 582
Calzetti et al. 1997, AJ 114, 1834
Calzetti 2001, PASP 113, 1449
Cardelli et al. 1989, ApJ 345, 245
Clarke & Oey 2002, MNRAS 337, 1299
de Grijs et al. 2001, AJ 121, 768
Jansen 2000, Ph.D. Thesis (Univ. of Groningen)
Jansen et al. 2000a, ApJS 126, 271
Jansen et al. 20006, ApJS 126, 331
Jansen et al. 2001, ApJ 551, 825
Jansen et al. 2004, ApJS (in prep.)
Kennicutt 1983, ApJ 272, 54
Kennicutt et al. 1989, ApJ 337, 761
Kennicutt 1998, ARAundA 36, 189
Leitherer 2001, in: “The Central kpc of Starbursts and AGN”, p.457
Macri et al. 2001, ApJ 549, 721
Martin 1997, ApJ 491, 561
Martin & Kennicutt 1997, ApJ 483, 698
Oey & Kennicutt 1997, MNRAS 291, 827
Sullivan et al. 2000, MNRAS 312, 442
Sullivan et al. 2001, ApJ 558, 72
Windhorst et al. 2002, ApJS 143, 113
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Jansen, R.A. (2004). An HSTACS/WFC Hα Imaging Survey of Nearby Galaxies. In: Block, D.L., Puerari, I., Freeman, K.C., Groess, R., Block, E.K. (eds) Penetrating Bars through Masks of Cosmic Dust. Astrophysics and Space Science Library, vol 319. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2862-5_38
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DOI: https://doi.org/10.1007/978-1-4020-2862-5_38
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