TY - JOUR
T1 - The grey extinction curve in NGC 3603
AU - Pang, Xiaoying
AU - Pasquali, Anna
AU - Grebel, Eva K.
N1 - Publisher Copyright:
Copyright © 2016 International Astronomical Union.
PY - 2016
Y1 - 2016
N2 - We use photometry in the F220W, F250W, F330W, F435W filters from the High Resolution Channel of the Advanced Camera for Surveys and photometry in the F555W, F675W, and F814W filters from the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope to derive individual stellar reddenings and extinctions for member stars in the HD 97950 cluster in the giant H ii region NGC 3603. Within the standard deviation associated with E(λ-F555W)/E(F435W-F555W) in each filter, the cluster extinction curve at ultraviolet wavelengths tends to be greyer than the average Galactic extinction laws from Cardelli et al. (1989) and Fitzpatrick et al. (1999). It is closer to the extinction law derived by Calzetti et al. (2000) for starburst galaxies, where the 0.2175 μm bump is absent.
AB - We use photometry in the F220W, F250W, F330W, F435W filters from the High Resolution Channel of the Advanced Camera for Surveys and photometry in the F555W, F675W, and F814W filters from the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope to derive individual stellar reddenings and extinctions for member stars in the HD 97950 cluster in the giant H ii region NGC 3603. Within the standard deviation associated with E(λ-F555W)/E(F435W-F555W) in each filter, the cluster extinction curve at ultraviolet wavelengths tends to be greyer than the average Galactic extinction laws from Cardelli et al. (1989) and Fitzpatrick et al. (1999). It is closer to the extinction law derived by Calzetti et al. (2000) for starburst galaxies, where the 0.2175 μm bump is absent.
KW - extinction
KW - reddening
KW - star cluster
UR - http://www.scopus.com/inward/record.url?scp=84960462853&partnerID=8YFLogxK
U2 - 10.1017/S1743921315007917
DO - 10.1017/S1743921315007917
M3 - Article
AN - SCOPUS:84960462853
SN - 1743-9213
VL - 10
SP - 243
EP - 244
JO - Proceedings of the International Astronomical Union
JF - Proceedings of the International Astronomical Union
ER -