Results 41 to 50 of about 143,610 (241)

Dynamical Masses for 23 Pre-main-sequence Stars in Upper Scorpius: A Critical Test of Stellar Evolutionary Models

The Astrophysical Journal
We present dynamical masses for 23 pre-main-sequence (PMS) K- and M-type stars in the Upper Scorpius star-forming region. These masses were derived from the Keplerian rotation of CO disk gas using the Markov Chain Monte Carlo radiative-transfer package ...
A. P. M. Towner, J. A. Eisner, P. D. Sheehan, L. A. Hillenbrand, Y.-L. Wu   +4 more
doaj   +1 more source

Does God play dice with star clusters?

The Open Journal of Astrophysics, 2023
When a detailed model of a stellar population is unavailable, it is most common to assume that stellar masses are independently and identically distributed according to some distribution: the universal initial mass function (IMF). However, stellar masses
Michael Y. Grudic, Stella S. R. Offner, Dávid Guszejnov, Claude-André Faucher-Giguère, Philip F. Hopkins   +4 more
doaj   +1 more source

The California-Kepler Survey. II. Precise Physical Properties of 2025 Kepler Planets and Their Host Stars [PDF]

, 2017
We present stellar and planetary properties for 1305 Kepler Objects of Interest (KOIs) hosting 2025 planet candidates observed as part of the California-Kepler Survey.
Cargile, Phillip A., Fulton, Benjamin J., Hebb, Leslie, Hirsch, Lea A., Howard, Andrew W., Isaacson, Howard, Johnson, John Asher, Marcy, Geoffrey W., Morton, Timothy D., Petigura, Erik A., Rogers, Leslie A., Sinukoff, Evan, Weiss, Lauren M., Winn, Joshua N.   +13 more
core   +3 more sources

Mass loss at the lowest stellar masses [PDF]

Astronomy & Astrophysics, 2005
Accepted for publication in A&A, 8 pages, 5 figures, 2 ...
Fernandez, M., Comeron, F.
openaire   +2 more sources

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed, Raquel Revuelta Iniesta, Mary Fewtrell, Julie Lanigan, Breeana Gardiner, Graeme O'Connor   +5 more
wiley   +1 more source

Resolved Stellar Mass Estimation of Nearby Late-type Galaxies for the SPHEREx Era: Dependence on Stellar Population Synthesis Models

The Astronomical Journal
The upcoming all-sky infrared spectrophotometric SPHEREx mission is set to provide spatially resolved stellar mass maps of nearby galaxies, offering more detailed insights than integrated light observations.
Jeong Hwan Lee, Minjin Kim, Taehyun Kim, Hyunjin Shim, Luis C. Ho, Ho Seong Hwang, Hyunmi Song, Dohyeong Kim, Yujin Yang, Woong-Seob Jeong   +9 more
doaj   +1 more source

Decoding Galactic Merger Histories

Galaxies, 2017
Galaxy mergers are expected to influence galaxy properties, yet measurements of individual merger histories are lacking. Models predict that merger histories can be measured using stellar halos and that these halos can be quantified using observations of
Eric F. Bell, Antonela Monachesi, Richard D’Souza, Benjamin Harmsen, Roelof S. de Jong, David Radburn-Smith, Jeremy Bailin, Benne W. Holwerda   +7 more
doaj   +1 more source

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez, Anna Felip‐Badia, Marina Caballero‐Bellon, Nazaret Sanchez‐Sierra, Alicia Castañeda, Moira Garraus, Maite Gorostegui, Margarida Simão‐Rafael, Juan Pablo Muñoz, Marta Perez‐Somarriba, Salvador Mañe, Mariana Cecilia Planells, Sara Perez‐Jaume, Jaume Mora   +13 more
wiley   +1 more source

Outshining by Recent Star Formation Prevents the Accurate Measurement of High-z Galaxy Stellar Masses

The Astrophysical Journal
We demonstrate that the inference of galaxy stellar masses via spectral energy distribution (SED) fitting techniques for galaxies formed in the first billion years after the Big Bang carries fundamental uncertainties owing to the loss of star formation ...
Desika Narayanan, Sidney Lower, Paul Torrey, Gabriel Brammer, Weiguang Cui, Romeel Davé, Kartheik G. Iyer, Qi Li, Christopher C. Lovell, Laura V. Sales, Daniel P. Stark, Federico Marinacci, Mark Vogelsberger   +12 more
doaj   +1 more source

Evolution of the Most Massive Galaxies to z=0.6: I. A New Method for Physical Parameter Estimation

, 2011
We use principal component analysis (PCA) to estimate stellar masses, mean stellar ages, star formation histories (SFHs), dust extinctions and stellar velocity dispersions for ~290,000 galaxies with stellar masses greater than $10^{11}Msun and redshifts ...
Abazajian, Abazajian, Adam S. Bolton, Aihara, Alongi, Asari, Balogh, Bell, Bell, Bell, Benjamin A. Weaver, Benson, Bernardi, Best, Best, Best, Blanton, Boehringer, Borch, Bower, Bressan, Brinchmann, Bruzual, Budavári, Cappellari, Chabrier, Charlot, Chen, Chen, Christy A. Tremonti, Claudia Maraston, Conroy, Croton, Donald P. Schneider, Drory, Eisenstein, Eminian, Fabian, Fagotto, Fagotto, Fukugita, Gallazzi, Gallazzi, Gallazzi, Girardi, Gorgas, Graham, Graham, Graham, Guinevere Kauffmann, Gunawardhana, Gunn, Gunn, Heavens, Heckman, Hogg, Hoversten, Hu, John Chisholm, Jon Brinkmann, Juneau, Kang, Kannappan, Karim, Katarina Kovač, Kauffmann, Kauffmann, Kauffmann, Kauffmann, Kauffmann, Kaviraj, Kaviraj, Kennicutt, Kevin Bundy, Kriek, Kriek, Kroupa, Le Borgne, Li, Li, Lu, Madgwick, Madgwick, Maraston, Maraston, Maraston, Maraston, Masters, McNamara, Meynet, Naab, Oconnell, Padmanabhan, Panter, Pearce, Pier, Salim, Salim, Salpeter, Scarlata, Schaller, Schlegel, Schlegel, Simon White, Stoughton, Strauss, Sánchez-Blázquez, Thomas, Thomas, Thomas, Timothy M. Heckman, Tremaine, Tremonti, van der Wel, Vazdekis, Wang, Wang, Wild, Worthey, Worthey, Yan-Mei Chen, York, Zheng, Zibetti   +123 more
core   +1 more source