248,818 research outputs found
Barnes Hospital Bulletin
https://digitalcommons.wustl.edu/bjc_barnes_bulletin/1202/thumbnail.jp
Barnes Hospital Record
https://digitalcommons.wustl.edu/bjc_barnes_record/1202/thumbnail.jp
Outlook Magazine, Autumn 2017
https://digitalcommons.wustl.edu/outlook/1202/thumbnail.jp
Spartan Daily November 9, 2010
Volume 135, Issue 39https://scholarworks.sjsu.edu/spartandaily/1202/thumbnail.jp
Forming Early-type Galaxies in Groups Prior to Cluster Assembly
We study a unique proto-cluster of galaxies, the supergroup SG1120-1202. We
quantify the degree to which morphological transformation of cluster galaxies
occurs prior to cluster assembly in order to explain the observed early-type
fractions in galaxy clusters at z=0. SG1120-1202 at z~0.37 is comprised of four
gravitationally bound groups that are expected to coalesce into a single
cluster by z=0. Using HST ACS observations, we compare the morphological
fractions of the supergroup galaxies to those found in a range of environments.
We find that the morphological fractions of early-type galaxies (~60 %) and the
ratio of S0 to elliptical galaxies (0.5) in SG1120-1202 are very similar to
clusters at comparable redshift, consistent with pre-processing in the group
environment playing the dominant role in establishing the observed early-type
fraction in galaxy clusters.Comment: 5 pages, 2 figures, 2 tables. Accepted for publication in ApJ Letter
Sensitive Radio Observations of High Redshift Dusty QSOs
We present sensitive radio continuum imaging at 1.4 GHz and 4.9 GHz of seven
high redshift QSOs selected for having a 240 GHz continuum detection, which is
thought to be thermal dust emission. We detect radio continuum emission from
four of the sources: BRI 0952-0115, BR 1202-0725, LBQS 1230+1627B, and BRI
1335-0417. The radio source in BR 1202-0725 is resolved into two components,
coincident with the double mm and CO sources. We compare the results at 1.4 GHz
and 240 GHz to empirical and semi-analytic spectral models based on star
forming galaxies at low redshift. The radio-to-submm spectral energy
distribution for BR 1202-0725, LBQS 1230+1627B, and BRI 1335-0417 are
consistent with that expected for a massive starburst galaxy, with implied
massive star formation rates of order 1000 solar masses per year (without
correcting for possible amplification by gravitational lensing). The
radio-to-submm spectral energy distribution for BRI 0952-0115 suggests a
low-luminosity radio jet source driven by the AGN.Comment: 12 pages, Latex emulateapj format, including 1 table and 3 figures.
The Astrophysical Journal, to appear in the January 2000 issu
U.S. Law of the Sea Cruise to Map and Sample the US Arctic Ocean Margin
U.S. Law of the Sea cruise to map and sample the US Arctic Ocean margin
CRUISE HEALY 1202
August 25 to September 27, 2012
Barrow, AK to Dutch Harbor, A
Southern hemispheric halon trends and global halon emissions, 1978â2011
The atmospheric records of four halons, H-1211 (CBrClF2), H-1301 (CBrF3), H-2402 (CBrF2CBrF2) and H-1202 (CBr2F2), measured from air collected at Cape Grim, Tasmania, between 1978 and 2011, are reported. Mixing ratios of H-1211, H-2402 and H-1202 began to decline in the early to mid-2000s, but those of H-1301 continue to increase up to mid-2011. These trends are compared to those reported by NOAA (National Oceanic and Atmospheric Administration) and AGAGE (Advanced Global Atmospheric Experiment). The observations suggest that the contribution of the halons to total tropospheric bromine at Cape Grim has begun to decline from a peak in 2008 of about 8.1 ppt. An extrapolation of halon mixing ratios to 2060, based on reported banks and predicted release factors, shows this decline becoming more rapid in the coming decades, with a contribution to total tropospheric bromine of about 3 ppt in 2060. Top-down global annual emissions of the halons were derived using a two-dimensional atmospheric model. The emissions of all four have decreased since peaking in the late 1980sâmid-1990s, but this decline has slowed recently, particularly for H-1301 and H-2402 which have shown no decrease in emissions over the past five years. The UEA (University of East Anglia) top-down model-derived emissions are compared to those reported using a top-down approach by NOAA and AGAGE and the bottom-up estimates of HTOC (Halons Technical Options Committee). The implications of an alternative set of steady-state atmospheric lifetimes are discussed. Using a lifetime of 14 yr or less for H-1211 to calculate top-down emissions estimates would lead to small, or even negative, estimated banks given reported production data. Finally emissions of H-1202, a product of over-bromination during the production process of H-1211, have continued despite reported production of H-1211 ceasing in 2010. This raises questions as to the source of these H-1202 emissions
Distinguishing damages from two earthquakes âArchaeoseismology of a Crusader castle (Al-Marqab citadel, Syria)
Damages from two major earthquakes are identified in medieval Al-Marqab citadel (Latin: Margat) in coastal Syria. Built by the Order of St. John (Hospitallers) in the twelfthâthirteenth centuries, the hilltop fortification has masonry walls made with and without mortar, using the opus caementum technology (Roman concrete). V-shaped and U-shaped failures, single-corner and symmetrical corner collapses, and in-plane shifts of ashlar masonry walls are identified and dated by historical and archaeological methods. The azimuth of displacement is NE-SW for the older
damages of the Crusader period (A.D. 1170â1285), possibly related to the A.D. 1202 earthquake. A later, NW-SE displacement occurred during the Muslim period (post-
1285). The 1202 earthquake produced at least VIII intensity on the MSK scale at Al-Marqab, which is higher than previously considered
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