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A young star cluster in the Leo A galaxy
Narbutis, D.; Vansevičius, V.; Bridžius, A. +2 more
We report a serendipitous discovery of a star cluster in the dwarf irregular galaxy Leo A. Young age ( ∼28 Myr) and low mass ( ∼510 M⊙) estimates are based on the isochrone fit assuming a metallicity derived for H II regions (Z=0.0007). The color-magnitude diagrams of the stars, located in and around the cluster area, and the results of…
Ultraviolet spectroscopic investigation of HU Aqr and AN UMa with the data from HST and IUE
Sanad, M. R.
We present ultraviolet spectroscopic study of two polar systems, HU Aqr and AN UMa, observed with the Hubble Space Telescope's Space Telescope Imaging Spectrograph (STIS) and Faint Object Spectrograph (FOS) and with the International Ultraviolet Explorer (IUE) during the period 1979--2003, to diagnose the ultraviolet fluxes of C IV 1550 Å and He I…
Structural and morphological properties of ultraluminous infrared galaxies at 1<z<3
Fang, Guanwen; Kong, Xu; Chen, Yang +1 more
Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR>1012L⊙) at 1<z< 3. Their rest-frame optical morphologies show that high-redshift ULIRGs…