Results 101 to 110 of about 24,068 (186)

Stellar mass-to-light ratios from galaxy spectra: how accurate can they be?

, 2009
Stellar masses play a crucial role in the exploration of galaxy properties and the evolution of the galaxy population. In this paper, we explore the minimum possible uncertainties in stellar mass-to-light (M/L) ratios from the assumed star formation ...
Bell, Eric F., Gallazzi, Anna
core   +1 more source

Measuring Galaxy Star Formation Rates From Integrated Photometry: Insights from Color-Magnitude Diagrams of Resolved Stars

, 2013
We use empirical star formation histories (SFHs), measured from HST-based resolved star color-magnitude diagrams, as input into population synthesis codes to model the broadband spectral energy distributions (SEDs) of ~50 nearby dwarf galaxies (6.5 < log
Boquien, Mederic, Dalcanton, Julianne J., Dale, Daniel A., Dolphin, Andrew E., Johnson, Benjamin D., Johnson, L. C., Kennicutt, Robert C., Lee, Janice C., Paz, Armando,, Skillman, Evan D., Weisz, Daniel R., Williams, Benjamin F.   +11 more
core   +3 more sources

Baking sunflower hulls within an aluminum envelope in a common laboratory oven yields charcoal

MethodsX, 2015
Charcoals have been widely used by scientist to research the removal of contaminants from water and air. One key feature of charcoal is that it keeps macropores from the parent material – though anisotropically contracted – and can even develop meso- and
Pablo Maximiliano Arnal
doaj   +1 more source

Families and patients as partners in hospital‐based research

Journal of Hospital Medicine, Volume 21, Issue 3, Page 325-328, March 2026.
Amanda C. Schondelmeyer, Hadley Sauers‐Ford, Lisa M. Vaughn, Ashley M. Jenkins, Amy Bentley, Kathleen E. Walsh   +5 more
wiley   +1 more source

Parametrising Star Formation Histories

, 2014
We examine the star formation histories (SFHs) of galaxies in smoothed particle hydrodynamics (SPH) simulations, compare them to parametric models that are commonly used in fitting observed galaxy spectral energy distributions, and examine the efficacy ...
Conroy, Charlie, Dave, Romeel, Fardal, Mark, Katz, Neal, Oppenheimer, Benjamin D., Simha, Vimal, Weinberg, David H.   +6 more
core  

A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822

, 2014
We present a detailed photometric study of the dwarf irregular galaxy NGC 6822 aimed at investigating the properties of its stellar populations and, in particular, the presence of stellar radial gradients.
Aparicio, A., Bono, G., Buonanno, R., Cassisi, S., Fusco, F., Hidalgo, S. L., Monelli, M., Pietrinferni, A.   +7 more
core   +1 more source

Evaluation the Compared Doppler Ultrasonography and Serial Fondal Height Measurement in Detection of IUGR

پزشکی بالینی ابن سینا, 2008
Introduction & Objective: There are different methods for detection of fetal growth restriction. The most important methods are serial fondal height (SFH), and ultrasonic measurement.
Shohreh Alimohammadi, Mehrangiz Zamani
doaj  

A CONTACT INVARIANT IN SUTURED MONOPOLE HOMOLOGY

Forum of Mathematics, Sigma, 2016
We define an invariant of contact 3-manifolds with convex boundary using Kronheimer and Mrowka’s sutured monopole Floer homology theory ( $SHM$ ).
JOHN A. BALDWIN, STEVEN SIVEK
doaj   +1 more source

The Nature of Starbursts: I. The Star Formation Histories of Eighteen Nearby Starburst Dwarf Galaxies

, 2010
We use archival HST observations of resolved stellar populations to derive the star formation histories (SFHs) of 18 nearby starburst dwarf galaxies.
Aloisi, Andrew Dolphin, Angeretti, Annibali, Aparicio, Benjamin Williams, Bertelli, Bolatto, Bottinelli, Cannon, Cannon, Cole, Colless, Daniel Weisz, David Stark, de Blok, de Vaucouleurs, Dohm-Palmer, Drozdovsky, Drozdovsky, Evan D. Skillman, Gieren, Gil de Paz, Gogarten, Grocholski, Harris, Harris, Heckman, Heckman, Heydari-Malayeri, Holtzman, Holtzman, Huchtmeier, Huchtmeier, Israel, Israel, John M. Cannon, Jon Holtzman, Julianne Dalcanton, Karachentsev, Kaviraj, Kennicutt, Kristen B. W. McQuinn, Lee, Lee, Leroy, López-Sánchez, Madau, Marlowe, Marlowe, Mas-Hesse, Mayer, McQuinn, McQuinn, Meurer, Méndez, Nishi, O'Connell, Oey, Omukai, Sakai, Scalo, Schaerer, Schlegel, Sebastian Hidalgo-Rodríguez, Skillman, Skillman, Skillman, Spaans, Taylor, Thornley, Tremonti, Tully, van Zee, van Zee, Walter, Weisz, Williams, Wilson   +78 more
core   +1 more source

Testing a New Star Formation History Model from Principal Component Analysis to Facilitate Spectral Synthesis Modeling

The Astrophysical Journal
The spectrum of a galaxy is a complicated convolution of many properties of the galaxy, such as the star formation history (SFH), initial mass function, and metallicity.
Yanzhe Zhang, H. J. Mo, Katherine E. Whitaker, Shuang Zhou   +3 more
doaj   +1 more source