Results 21 to 30 of about 4,192,840 (340)

Pre-main-sequence isochrones -- I. The Pleiades benchmark [PDF]

, 2012
We present a critical assessment of commonly used pre-main-sequence isochrones by comparing their predictions to a set of well-calibrated colour-magnitude diagrams of the Pleiades in the wavelength range 0.4 to 2.5 microns.
Allard, Allard, Allard, Allen, Alvarez, Andersen, Asplund, Baraffe, Baraffe, Barber, Barrado y Navascués, Bessell, Bessell, Bessell, Bessell, Brott, Burningham, Burningham, Böhm-Vitense, Cameron P. M. Bell, Cardelli, Castelli, Cavadore, Clausen, Clausen, Clement, Clement, Cohen, D'Antona, Dahm, Delfosse, Doi, Dotter, Freytag, Fukugita, Girardi, Grevesse, Hartmann, Hartmann, Hillenbrand, Jeffries, Jeffries, Jeffries, King, Kraus, Kurucz, Kurucz, Lacy, Lacy, Leggett, Leggett, Lodieu, Ludwig, Lutz, López-Morales, Martín, Mayne, Mayne, N. J. Mayne, Naylor, Naylor, Naylor, Oke, Partridge, Perryman, Pickles, Popper, Popper, Popper, R. D. Jeffries, S. P. Littlefair, Schwenke, Shahbaz, Siess, Soderblom, Stauffer, Stauffer, Ségransan, Tim Naylor, Tognelli, Torres, Torres, van Altena, Verbeek   +83 more
core   +2 more sources

Star-forming Main Sequence of Giant Low Surface Brightness Galaxies

The Astrophysical Journal, 2023
Giant low surface brightness galaxies (GLSBGs) are fundamentally distinct from normal galaxies and other types of LSBGs in terms of star formation and evolution. In this work, we collected 27 local GLSBGs from the literature.
Wei Du, Cheng Cheng, Pengliang Du, Lin Du, Hong Wu   +4 more
doaj   +1 more source

XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk

The Astrophysical Journal Letters, 2023
We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions.
María Claudia Ramírez-Tannus, Arjan Bik, Lars Cuijpers, Rens Waters, Christiane Göppl, Thomas Henning, Inga Kamp, Thomas Preibisch, Konstantin V. Getman, Germán Chaparro, Pablo Cuartas-Restrepo, Alex de Koter, Eric D. Feigelson, Sierra L. Grant, Thomas J. Haworth, Sebastián Hernández, Michael A. Kuhn, Giulia Perotti, Matthew S. Povich, Megan Reiter, Veronica Roccatagliata, Elena Sabbi, Benoît Tabone, Andrew J. Winter, Anna F. McLeod, Roy van Boekel, Sierk E. van Terwisga   +26 more
doaj   +1 more source

A Test of Pre-Main-Sequence Lithium Depletion Models [PDF]

, 2010
Despite the extensive study of lithium depletion during pre-main-sequence contraction, studies of individual stars show discrepancies between ages determined from the HR diagram and ages determined from lithium depletion (Song et al.
Baraffe, Barrado y Navascués, Berger, Bildsten, Burke, Duchêne, D’Antona, D’Antona, Eric L. N. Jensen, Fernandez, Hillenbrand, Jeffries, Jeffries, Jennifer C. Yee, King, Lane, Luhman, López-Morales, Mentuch, Mullan, Navascués, Palla, Pasquini, Randich, Riaz, Ribas, Scholz, Siess, Song, Song, Stassun, Stauffer, van Leeuwen, White, Zuckerman   +34 more
core   +2 more sources

Theoretical Predictions of Surface Light Element Abundances in Protostellar and Pre-Main Sequence Phase

Frontiers in Astronomy and Space Sciences, 2021
Theoretical prediction of surface stellar abundances of light elements–lithium, beryllium, and boron–represents one of the most interesting open problems in astrophysics.
E. Tognelli, E. Tognelli, S. Degl’Innocenti, S. Degl’Innocenti, P. G. Prada Moroni, P. G. Prada Moroni, L. Lamia, L. Lamia, L. Lamia, R. G. Pizzone, A. Tumino, A. Tumino, C. Spitaleri, C. Spitaleri, A. Chiavassa   +14 more
doaj   +1 more source

SDSS-IV MANGA: Spatially Resolved Star Formation Main Sequence and LI(N)ER Sequence [PDF]

, 2017
We present our study on the spatially resolved H_alpha and M_star relation for 536 star-forming and 424 quiescent galaxies taken from the MaNGA survey.
Barrera-Ballesteros, J. K., Bizyaev, D., Boquien, M., Brownstein, J., Cano-díaz, M., Cruz-González, I., Hagen, A., Hsieh, B. C., Hsu, C. H., Ibarra, H., Lin, J. H., Lin, Lihwai, Oravetz, D., Pan, H. A., Pan, K., Riffel, R., Simmons, A., Sánchez, S. F., Yan, R., Zhang, K.   +19 more
core   +3 more sources

A new deepening of mass-radius empirical relation for main sequence stars

Emergent Scientist
In the following paper I have compared some typical mass-radius relations for main sequence stars by studying their level of agreement with DEBCat (J. Southworth, ASP Conf. Ser.
Camposeo Salvatore
doaj   +1 more source

Walkaway Star Candidates in IC 348 and Their Possible Birthplaces

The Astrophysical Journal, 2023
Observations and theories reveal that star-forming regions eject their members during the early evolution of the cluster. We present an initial search for stars ejected from the young cluster IC 348 based on an analysis of Gaia EDR3 astrometry of ...
Xingyu Zhou, Gregory J. Herczeg, Min Fang, Xiaolong Wang, Bin B. Ren   +4 more
doaj   +1 more source

Mass loss in main-sequence B stars

, 2014
We calculate radiatively driven wind models of main-sequence B stars and provide the wind mass-loss rates and terminal velocities. The main-sequence mass-loss rate strongly depends on the stellar effective temperature.
Krticka, Jiri
core   +1 more source

Fundamental properties of lower main-sequence stars

, 2012
The field of exoplanet research has revitalized interest in M dwarfs, which have become favorite targets of Doppler and transit surveys. Accurate measurements of their basic properties such as masses, radii, and effective temperatures have revealed ...
Andersen, Barnes, Birkby, Bonfils, Carter, Casagrande, Chabrier, Clausen, Coughlin, D'Antona, Dotter, Doyle, Feiden, Gough, Harrison, Hoxie, Hoxie, Irwin, Johnson, Johnson, Lacy, Law, López-Morales, López-Morales, MacDonald, Morales, Morales, Morales, Mullan, Nutzman, Popper, Ribas, Ribas, Rojas-Ayala, Rojas-Ayala, Schlaufman, Spada, Stassun, Terrien, Torres, Torres, Torres, Windmiller, Winn, Woolf, Woolf, Woolf   +46 more
core   +1 more source