RWU/WPRI 12 Poll Shows R.I. Governor\u27s Race a Dead Heat

Poll finds 77 percent of Rhode Islanders consider housing costs a very serious or somewhat serious problem

Board Of Trustees Selects RWU\u27s Next President

The Roger Williams University Board of Trustees on Wednesday announced that Ioannis (Yannis) Miaoulis, who transformed the Museum of Science, Boston into an institution of national and international prominence, will become RWU’s new president, beginning in August

RWU School of Continuing Studies Partnering with Westerly Education Center

University will offer four courses in Westerly during semester starting Jan. 24

New York Times Reporter Dan Barry to Talk About “The Lost Children of Tuam” at RWU on Nov. 14

Community invited to hear journalist and author speak as part of yearlong series, “Talking About Race, Gender and Power”

Latino Policy Institute at RWU Selects Marcela Betancur as New Director

Betancur brings experience in housing, education, civil liberties and workforce development to a role that “has never been more needed”

Law as theory: constitutive thought in the formation of (legal) practice

Law in its practical guise is found to have a constituent correspondence with theory

RWU School of Continuing Studies Changes Name to University College

Roger Williams University today changed the name of its School of Continuing Studies to University College and unveiled a revamped website: https://www.rwu.edu/uc

An Analysis of the Shapes of Interstellar Extinction Curves. VI. The Near-IR Extinction Law

We combine new HST/ACS observations and existing data to investigate the wavelength dependence of NIR extinction. Previous studies suggest a power-law form, with a "universal" value of the exponent, although some recent observations indicate that significant sight line-to-sight line variability may exist. We show that a power-law model provides an excellent fit to most NIR extinction curves, but that the value of the power, beta, varies significantly from sight line-to-sight line. Therefore, it seems that a "universal NIR extinction law" is not possible. Instead, we find that as beta decreases, R(V) [=A(V)/E(B-V)] tends to increase, suggesting that NIR extinction curves which have been considered "peculiar" may, in fact, be typical for different R(V) values. We show that the power law parameters can depend on the wavelength interval used to derive them, with the beta increasing as longer wavelengths are included. This result implies that extrapolating power law fits to determine R(V) is unreliable. To avoid this problem, we adopt a different functional form for NIR extinction. This new form mimics a power law whose exponent increases with wavelength, has only 2 free parameters, can fit all of our curves over a longer wavelength baseline and to higher precision, and produces R(V) values which are consistent with independent estimates and commonly used methods for estimating R(V). Furthermore, unlike the power law model, it gives R(V)'s that are independent of the wavelength interval used to derive them. It also suggests that the relation R(V) = -1.36 E(K-V)/E(B-V) - 0.79 can estimate R(V) to +/-0.12. Finally, we use model extinction curves to show that our extinction curves are in accord with theoretical expectations.Comment: To appear in the Astrophysical Journa

RWU Releases New Hawk Logo

More passionate and fierce hawk is part of project that includes updated color palette and a stronger, more unified visual identity for athletics