Results 11 to 20 of about 678 (152)

The reddening law of type Ia supernovae: separating intrinsic variability from dust using equivalent widths [PDF]

Astronomy & Astrophysics, 2011
6 pages, 3 figures, 1 table; accepted by A&A ...
Chotard, N., Gangler, E., Aldering, G., Antilogus, P., Aragon, C., Bailey, S., Baltay, C., Bongard, S., Buton, C., Canto, A., Childress, M., Copin, Y., Fakhouri, H. K., Hsiao, E. Y., Kerschhaggl, M., Kowalski, M., Loken, S., Nugent, P., Paech, K., Pain, R., Pecontal, E., Pereira, R., Perlmutter, S., Rabinowitz, D., Runge, K., Scalzo, R., Smadja, G., Tao, C., Thomas, R. C., Weaver, B. A., Wu, C.   +30 more
openaire   +4 more sources

An HST Study of the Substellar Population of NGC 2024

The Astrophysical Journal, 2023
We performed an HST/WFC3-IR imaging survey of the young stellar cluster NGC 2024 in three filters probing the 1.4 μ m H _2 O absorption feature, characteristic of the population of low-mass and substellar-mass objects down to a few Jupiter masses.
Massimo Robberto, Mario Gennaro, Nicola Da Rio, Giovanni Maria Strampelli, Leonardo Ubeda, Elena Sabbi, Dana Koeppe, Jonathan C. Tan, David R. Soderblom   +8 more
doaj   +1 more source

The UV and optical reddening law to the Galactic Bulge and CNO abundances in Bulge planetary nebulae [PDF]

Symposium - International Astronomical Union, 1993
An analysis of the differential ultraviolet extinction towards four bulge planetary nebulae, based on the observed line ratio of He II 1640/4686Å, shows that the ultraviolet reddening law towards the bulge is much steeper than in the solar neighbourhood.
N. A. Walton, M. J. Barlow, R. E. S. Clegg   +2 more
openaire   +1 more source

Steep extinction towards GRB 140506A reconciled from host galaxy observations: Evidence that steep reddening laws are local [PDF]

Astronomy & Astrophysics, 2017
We present the spectroscopic and photometric late-time follow-up of the host galaxy of the long-duration Swift gamma-ray burst GRB 140506A at z = 0.889. The optical and near-infrared afterglow of this GRB had a peculiar spectral energy distribution (SED) with a strong flux-drop at 8000 (4000 rest-frame) suggesting an unusually steep extinction ...
Heintz, K., Fynbo, J., Jakobsson, P., Krühler, T., Christensen, L., Watson, D., Ledoux, C., Noterdaeme, P., Perley, D., Rhodin, H., Selsing, J., Schulze, S., Tanvir, N., Goldoni, P., Xu, D., Milvang-Jensen, B., Moeller, P.   +16 more
openaire   +6 more sources

Reddening and the Extinction Law at High Galactic Latitude

The Astrophysical Journal, 2005
We present near-infrared (JHKL) photometry of 103 southern stars located behind translucent interstellar clouds at high Galactic latitude. Our data are combined with visual photometry and spectral type information from the literature in a detailed analysis of the wavelength dependence of interstellar extinction by dust in these high-latitude clouds. We
K. A. Larson, D. C. B. Whittet
openaire   +2 more sources

Massive luminous early type stars in the LMC [PDF]

Astronomy & Astrophysics, 2002
In order to construct a comprehensive HRD of early type stars in the Large Magellanic Cloud (LMC) in the first step the reddenings of individual stars and the LMC reddening law have been investigated. 1942 LMC member stars with good UBV photometries from the Bochum photometry data base have been first corrected individually for galactic foreground ...
Gochermann, J., Schmidt-Kaler, T.
openaire   +2 more sources

Measuring the Slope of the Dust Extinction Law and the Power Spectrum of Dust Clouds Using Differentially Reddened Globular Clusters [PDF]

The Astronomical Journal, 2004
We present 3 methods for measuring the Galactic dust extinction law slope R_V and a method for quantifying fine structure in dust clouds in the direction of differentially-reddened globular clusters. We apply these methods to the low- latitude globular cluster NGC4833 which displays variable extinction/reddening about a mean ~ 1.
Melbourne, J., Guhathakurta, P.
openaire   +2 more sources

The Optical to Infrared 0.6–5.3 μm Dust Extinction Law of the Milky Way with JWST NIRSpec: Westerlund 2

The Astrophysical Journal Letters
The interstellar extinction law is important for interpreting observations and inferring the properties of interstellar dust grains. Based on the 993 prism/CLEAR spectra from the James Webb Space Telescope (JWST), we investigate the 0.6–5.3 μ m ...
Shu Wang, Xiaodian Chen
doaj   +1 more source

Exploring the Agency of Algorithmic Technology in Talent Management Decision‐Making: An Actor‐Network Theory Perspective

Human Resource Management Journal, EarlyView.
ABSTRACT Guided by the Actor‐Network Theory (ANT) perspective, this study explores user experiences with the perceived agency of algorithmic technology in the context of talent management (TM) decisions. Through a qualitative analysis of 11 client companies utilizing algorithmic TM decision‐making technology provided by an HR tech service firm, we ...
Violetta Khoreva, Vlad Vaiman, Sunghoon Kim   +2 more
wiley   +1 more source

Concealed coexistence: Reproductive choice and coercion in Timor‐Leste

Medical Anthropology Quarterly, EarlyView.
Abstract Choice is a central concept in reproductive rights. However, a discourse of choice in reproductive health can also mask precisely the act it aims to protect against: coercion. Whilst choice has been explored extensively in studies of reproductive rights and justice, understandings of coercion are fragmented and under‐theorized.
Laura Burke
wiley   +1 more source