Search Publications

WR 38/38a and the ratio of total-to-selective extinction in Carina

Turner, David G.

A reanalysis of the (seemingly very distant) open cluster Shorlin 1, the group of stars associated with WR 38 and WR 38a, is made on the basis of existing UBV and JHK_s observations for cluster members. The 2MASS observations, in particular, imply a mean cluster reddening of E_B‑V=1.45±0.07 and a distance of 2.94±0.12 kpc. The …

Tidal dwarf galaxies at intermediate redshifts

Gao, Yu; Zheng, Xian-Zhong; Zhao, Ying-He +1 more

We present the first attempt at measuring the production rate of tidal dwarf galaxies (TDGs) and estimating their contribution to the overall dwarf population. Using HST/ACS deep imaging data from GOODS and GEMS surveys in conjunction with photometric redshifts from COMBO-17 survey, we performed a morphological analysis for a sample of merging/int…

Star formation in the starburst cluster in NGC 3603

Ventura, Paolo; Valenti, Elena; Pang, Xiaoying +7 more

We have used new, deep, visible and near infrared observations of the compact starburst cluster in the giant HII region NGC 3603 and its surroundings with the WFC3 on HST and HAWK-I on the VLT to study in detail the physical properties of its intermediate mass (∼1–3 M_⊙) stellar population. We show that after correction for differential …