Results 21 to 30 of about 4,244,877 (397)

Is there a mass discrepancy in the Cepheid binary OGLE-LMC-CEP0227? [PDF]

, 2011
Context. The Cepheid mass discrepancy, the difference between masses predicted from stellar evolution and stellar pulsation calculations, is a challenge for the understanding of stellar astrophysics. Recent models of the eclipsing binary Cepheid OGLE-LMC-
Bono, Bono, Caputo, Cassisi, Clausen, Cox, de Jager, Dupree, Evans, Evans, Evans, Evans, Fiorentino, H. R. Neilson, Heger, Hunter, Keller, Keller, Kovtyukh, Kudritzki, Lovekin, Meynet, Morel, N. Langer, Neilson, Neilson, Pietrzyński, Pietrzyński, Romaniello, Romaniello, Sandberg Lacy, Sasselov, Sasselov, Stobie, Turner, Valle, Yoon   +36 more
core   +2 more sources

Stellar Absorption Line Analysis of Local Star-Forming Galaxies: The Relation Between Stellar Mass, Metallicity, Dust Attenuation and Star Formation Rate [PDF]

, 2017
We analyze the optical continuum of star-forming galaxies in SDSS by fitting stacked spectra with stellar population synthesis models to investigate the relation between stellar mass, stellar metallicity, dust attenuation and star formation rate. We fit models calculated with star formation and chemical evolution histories that are derived empirically ...
H. Jabran Zahid, R. Kudritzki, C. Conroy, B. Andrews, I. Ho   +4 more
arxiv   +3 more sources

The characteristic stellar mass as a function of redshift [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
We present a model for the star formation process during the initial collapse of dark matter haloes at redshifts z=0-30. We derive a simple expression for the characteristic stellar mass scale during this initial burst of star formation. In our picture, this characteristic scale reflects both the minimum temperature to which the gas can cool ...
C. J. Clarke, Volker Bromm
openalex   +4 more sources

An Isolated Stellar-mass Black Hole Detected through Astrometric Microlensing [PDF]

Astrophysical Journal, 2022
We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (t E ≃ 270 days), high ...
K. Sahu, Jay Anderson, S. Casertano, H. Bond, A. Udalski, M. Dominik, A. Calamida, A. Bellini, T. Brown, M. Rejkuba, V. Bajaj, N. Kains, H. Ferguson, Chris L. Fryer, P. Yock, P. Mróz, S. Kozłowski, P. Pietrukowicz, R. Poleski, J. Skowron, I. Soszyński, M. Szymański, K. Ulaczyk, L. Wyrzykowski, J. Beaulieu, J. Marquette, A. Cole, K. Hill, S. Dieters, C. Coutures, D. Dominis-Prester, E. Bachelet, J. Menzies, M. Albrow, K. Pollard, A. Gould, J. Yee, W. Allen, L. Almeida, G. Christie, J. Drummond, A. Gal-yam, E. Gorbikov, F. Jablonski, Chung-Uk Lee, D. Maoz, I. Manulis, J. Mccormick, T. Natusch, R. Pogge, Y. Shvartzvald, U. Jørgensen, K. Alsubai, M. Andersen, V. Bozza, S. Novati, T. Hinse, M. Hundertmark, T. Husser, E. Kerins, P. Longa-Peña, L. Mancini, M. Penny, S. Rahvar, D. Ricci, S. Sajadian, J. Skottfelt, C. Snodgrass, J. Southworth, J. Tregloan-Reed, J. Wambsganss, O. Wertz, Y. Tsapras, R. Street, D. Bramich, K. Horne, Iain A. Steele STScI, Psu, U. Warsaw, U. S. Andrews, Eső, U. Columbia, Los Alamons Nat. Lab., U. Auckland, U. Warwick, 1. U. Tasmania, Iap Paris, U. Bordeaux, Natsuyama Japan, Las Cumbres Obs., Saao, S. Africa, U. Canterbury, N. Zealand., Max-Planck-Inst., Heidelberg, Ohio state Univ., Cfa, Cambridge, Vintage Lane Obs, U. Valencia, Spain., Auckland Obs. New Zealand, Possum Obs. New Zealand, Univ. Southern Queensland, Australia., Weizmann Inst of Sci, Israel, T. Univ., K. Astron, Sp Sci Institute, Weizmann Inst of Sci, Farm Cove Obs, Irasr, U. Copenhagen, Denmark, Qeeri, Doha, Qatar, U. Salerno, Italy, Istit. Naz. Fis. Nucl., Napoli, Ipac, Pasadena, Inst. Astron., Toruń, Poland., Chungnam Nat. Univ., S. Korea, U. Heidelberg, H Germany, U. Gottingen, Jodrell Bank Centre Astroph., Manchester, UK., U. Antofagasta, Chile., U. Rome, -INAF, Turin, Louisiana State Univ., B. Rouge, Usa, Sharif Univ. of Tech., Tehran, Iran, Padova, Isfahan Univ. Tech., Isfahan, Open University, M. Keynes, U. Edinburgh, Keele Univ., Staffordshire, U. Atacama, U. Liege, Belgium, N. Dhabi, Uae, Liverpool John Moores Univ., Ogle Collaboration, PLANETRoboNET Collaboration, microFUN Collaboration, MiNDSTEp Consortium, R. Collaboration   +165 more
semanticscholar   +1 more source

Extending the evolution of the stellar mass–size relation at z ≤ 2 to low stellar mass galaxies from HFF and CANDELS [PDF]

Monthly notices of the Royal Astronomical Society, 2021
We reliably extend the stellar mass–size relation over 0.2 ≤ z ≤ 2 to low stellar mass galaxies by combining the depth of Hubble Frontier Fields with the large volume covered by CANDELS.
K. Nedkova, B. Häußler, D. Marchesini, P. Dimauro, G. Brammer, P. Eigenthaler, A. D. Feinstein, H. Ferguson, M. Huertas-Company, E. Johnston, Erin Kado-Fong, J. Kartaltepe, I. Labb'e, Daniel Lange-Vagle, N. Martis, E. McGrath, A. Muzzin, P. Oesch, Y. Órdenes-Briceño, T. Puzia, H. Shipley, B. Simmons, R. Skelton, M. Stefanon, Arjen van der Wel, K. Whitaker   +25 more
semanticscholar   +1 more source

The Gaia–Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age [PDF]

Astronomical Journal, 2020
Studies of exoplanet demographics require large samples and precise constraints on exoplanet host stars. Using the homogeneous Kepler stellar properties derived using the Gaia Data Release 2 by Berger et al., we recompute Kepler planet radii and incident
T. Berger, D. Huber, E. Gaidos, J. V. van Saders, L. Weiss   +4 more
semanticscholar   +1 more source

LATIS: The Stellar Mass–Metallicity Relation of Star-forming Galaxies at z ∼ 2.5

The Astrophysical Journal, 2023
We present the stellar mass–stellar metallicity relation for 3491 star-forming galaxies at 2 ≲ z ≲ 3 using rest-frame far-ultraviolet spectra from the Ly α Tomography IMACS Survey (LATIS).
Nima Chartab, Andrew B. Newman, Gwen C. Rudie, Guillermo A. Blanc, Daniel D. Kelson   +4 more
doaj   +1 more source

Revisiting the Planet Mass and Stellar Metallicity Relation for Low-Mass Exoplanets Orbiting GKM Class Stars

Universe, 2021
The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang, Daniel Zhao, Xuan Ji, Bohan Xie, Kristen A. Fahy   +4 more
doaj   +1 more source

Stellar mass ejections [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractIt has been known for some time now that rapidly-rotating solar-like stars possess the stellar equivalent of solar prominences. These may be three orders of magnitude more massive than their solar counterparts, and their ejection from the star may form a significant contribution to the loss of angular momentum and mass in the stellar wind.
Moira Jardine, Scott G. Gregory, Jean-François Donati   +2 more
openaire   +4 more sources

Variation in the stellar mass function along stellar streams [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT Stellar streams are the inevitable end product of star cluster evolution, with the properties of a given stream being related to its progenitor. We consider how the dynamical history of a progenitor cluster, as traced by the evolution of its stellar mass function, is reflected in the resultant stream.
Jeremy J Webb, Jo Bovy
openaire   +2 more sources