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Physical Sciences and Mathematics Commons™
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Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
The Great Observatories Origins Deep Survey - Vlt/Fors2 Spectroscopy In The Goods-South Field: Part Iii, E Vanzella, S Cristiani, M Dickinson, M Giavalisco, H Kuntschner, J Haase, M Nonino, P Rosati, C Cesarsky, Hc Ferguson, Rae Fosbury, A Grazian, La Moustakas, A Rettura, P Popesso, A Renzini, D Stern
The Great Observatories Origins Deep Survey - Vlt/Fors2 Spectroscopy In The Goods-South Field: Part Iii, E Vanzella, S Cristiani, M Dickinson, M Giavalisco, H Kuntschner, J Haase, M Nonino, P Rosati, C Cesarsky, Hc Ferguson, Rae Fosbury, A Grazian, La Moustakas, A Rettura, P Popesso, A Renzini, D Stern
Astronomy Department Faculty Publication Series
No abstract provided.
Spitzer Observations Of Star Formation In The Extreme Outer Disk Of M83 (Ngc5236), H Dong, D Calzetti, M Regan, D Thilker, L Bianchi, Gr Meurer, F Walter
Spitzer Observations Of Star Formation In The Extreme Outer Disk Of M83 (Ngc5236), H Dong, D Calzetti, M Regan, D Thilker, L Bianchi, Gr Meurer, F Walter
Astronomy Department Faculty Publication Series
Spitzer Infrared Array Camera (IRAC) observations of two fields in the extended UV disk (XUV-disk) of M83 have been recently obtained, ~3 R HII away from the center of the galaxy (R HII = 6.6 kpc). Galaxy Evolution Explorer (GALEX) UV images have shown the two fields to host in situ recent star formation. The IRAC images are used in conjunction with GALEX data and new H I imaging from The H I Nearby Galaxy Survey (THINGS) to constrain stellar masses and ages of the UV clumps in the fields, and to relate the local recent star formation to the …
Spectroscopic Confirmation Of An Extreme Starburst At Redshift 4.547, P Capak, Cl Carilli, N Lee, T Aldcroft, H Aussel, E Schinnerer, Gw Wilson, Min Yun, A Blain, M Giavalisco, O Ilbert, J Kartaltepe, Ks Lee, H Mccracken, B Mobasher, M Salvato, S Sasaki, Ks Scott, K Sheth, Y Shioya, D Thompson, M Elvis, Db Sanders, Nz Scoville, Y Tanaguchi
Spectroscopic Confirmation Of An Extreme Starburst At Redshift 4.547, P Capak, Cl Carilli, N Lee, T Aldcroft, H Aussel, E Schinnerer, Gw Wilson, Min Yun, A Blain, M Giavalisco, O Ilbert, J Kartaltepe, Ks Lee, H Mccracken, B Mobasher, M Salvato, S Sasaki, Ks Scott, K Sheth, Y Shioya, D Thompson, M Elvis, Db Sanders, Nz Scoville, Y Tanaguchi
Astronomy Department Faculty Publication Series
We report the spectroscopic confirmation of a submillimeter galaxy (SMG) at z = 4.547 with an estimated LIR = (0.5-2.0) × 1013 L. The spectra, mid-IR, and X-ray properties indicate the bolometric luminosity is dominated by star formation at a rate of >1000 M yr−1. Multiple, spatially separated components are visible in the Lyα line with an observed velocity difference of up to 380 km s−1 and the object morphology indicates a merger. The best-fit spectral energy distribution and spectral line indicators suggest the object is 2-8 Myr old and contains >1010 M …
Ongoing Assembly Of Massive Galaxies By Major Merging In Large Groups And Clusters From The Sdss, Dh Mcintosh, Yc Guo, J Hertzberg, N Katz, Hj Mo, Fc Van Den Bosch, Xh Yang
Ongoing Assembly Of Massive Galaxies By Major Merging In Large Groups And Clusters From The Sdss, Dh Mcintosh, Yc Guo, J Hertzberg, N Katz, Hj Mo, Fc Van Den Bosch, Xh Yang
Astronomy Department Faculty Publication Series
We investigate the incidence of major mergers creating massive (Mstar > 1011 M⊙) galaxies in present-day (z≤ 0.12) groups and clusters. Using a volume-limited sample of 845 groups with dark matter halo masses above 2.5 × 1013 M⊙, we isolate 221 galaxy pairs with ≤1.5 r-band magnitude differences, ≤30 kpc projected separations and combined masses above 1011 M⊙. We fit the r-band images of each pair as the line-of-sight projection of symmetric models and identify 38 mergers by the presence of residual asymmetric structure associated with …