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Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Astrophysics and Astronomy

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University of Massachusetts Amherst

2007

Galaxies : starburst

Articles 1 - 3 of 3

Full-Text Articles in Physical Sciences and Mathematics

Multiwavelength Study Of Massive Galaxies At Z Similar To 2. I. Star Formation And Galaxy Growth, E Daddi, M Dickinson, G Morrison, R Chary, A Cimatti, D Elbaz, D Frayer, A Renzini, A Pope, Dm Alexander, Fe Bauer, M Giavalisco, M Huynh, J Kurk, M Mignoli Jan 2007

Multiwavelength Study Of Massive Galaxies At Z Similar To 2. I. Star Formation And Galaxy Growth, E Daddi, M Dickinson, G Morrison, R Chary, A Cimatti, D Elbaz, D Frayer, A Renzini, A Pope, Dm Alexander, Fe Bauer, M Giavalisco, M Huynh, J Kurk, M Mignoli

Astronomy Department Faculty Publication Series

No abstract provided.


Evidence For A Population Of High-Redshift Submillimeter Galaxies From Interferometric Imaging, Jd Younger, Gg Fazio, Js Huang, Min Yun, Gw Wilson, Mln Ashby, Ma Gurwell, K Lai, Ab Peck, Gr Petitpas, Dj Wilner, D Iono, K Kohno, R Kawabe, Dh Hughes, I Aretxaga, T Webb, A Martinez-Sansigre, S Kim, Ks Scott, J Austermann, T Perera, Jd Lowenthal, E Schinnerer, V Smolcic Jan 2007

Evidence For A Population Of High-Redshift Submillimeter Galaxies From Interferometric Imaging, Jd Younger, Gg Fazio, Js Huang, Min Yun, Gw Wilson, Mln Ashby, Ma Gurwell, K Lai, Ab Peck, Gr Petitpas, Dj Wilner, D Iono, K Kohno, R Kawabe, Dh Hughes, I Aretxaga, T Webb, A Martinez-Sansigre, S Kim, Ks Scott, J Austermann, T Perera, Jd Lowenthal, E Schinnerer, V Smolcic

Astronomy Department Faculty Publication Series

We have used the Submillimeter Array to image a flux-limited sample of seven submillimeter galaxies, selected by the AzTEC camera on the JCMT at 1.1 mm, in the COSMOS field at 890 μ m with ~2'' resolution. All of the sources—two radio-bright and five radio-dim—are detected as single point sources at high significance (>6 σ), with positions accurate to ~0.2'' that enable counterpart identification at other wavelengths observed with similarly high angular resolution. All seven have IRAC counterparts, but only two have secure counterparts in deep HST ACS imaging. As compared to the two radio-bright sources in the sample, …


The Calibration Of Mid-Infrared Star Formation Rate Indicators, D Calzetti, Rc Kennicutt, Cw Engelbracht, C Leitherer, Bt Draine, L Kewley, J Moustakas, M Sosey, Da Dale, Kd Gordon, Gx Helou, Dj Hollenbach, L Armus, G Bendo, C Bot, B Buckalew, T Jarrett, A Li, M Meyer, Ej Murphy, M Prescott, Mw Regan, Gh Rieke, H Roussel, K Sheth, Jdt Smith, Md Thornley, F Walter Jan 2007

The Calibration Of Mid-Infrared Star Formation Rate Indicators, D Calzetti, Rc Kennicutt, Cw Engelbracht, C Leitherer, Bt Draine, L Kewley, J Moustakas, M Sosey, Da Dale, Kd Gordon, Gx Helou, Dj Hollenbach, L Armus, G Bendo, C Bot, B Buckalew, T Jarrett, A Li, M Meyer, Ej Murphy, M Prescott, Mw Regan, Gh Rieke, H Roussel, K Sheth, Jdt Smith, Md Thornley, F Walter

Astronomy Department Faculty Publication Series

With the goal of investigating the degree to which the MIR emission traces the SFR, we analyze Spitzer 8 and 24 μm data of star-forming regions in a sample of 33 nearby galaxies with available HST NICMOS images in the Paα (1.8756 μm) emission line. The galaxies are drawn from the SINGS sample and cover a range of morphologies and a factor ~10 in oxygen abundance. Published data on local low-metallicity starburst galaxies and LIRGs are also included in the analysis. Both the stellar continuum-subtracted 8 μm emission and the 24 μm emission correlate with the extinction-corrected Paα line emission, …