Results 101 to 110 of about 837,700 (191)

JADES + JEMS: A Detailed Look at the Buildup of Central Stellar Cores and Suppression of Star Formation in Galaxies at Redshifts 3 < z < 4.5

The Astrophysical Journal
We present a spatially resolved study of stellar populations in six galaxies with stellar masses M _* ∼ 10 ^10 M _☉ at z ∼ 3.7 using 14-filter James Webb Space Telescope (JWST)/NIRCam imaging from the JADES and JEMS surveys. The six galaxies are visually
Zhiyuan Ji, Christina C. Williams, Sandro Tacchella, Katherine A. Suess, William M. Baker, Stacey Alberts, Andrew J. Bunker, Benjamin D. Johnson, Brant Robertson, Fengwu Sun, Daniel J. Eisenstein, Marcia Rieke, Michael V. Maseda, Kevin Hainline, Ryan Hausen, George Rieke, Christopher N. A. Willmer, Eiichi Egami, Irene Shivaei, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Tobias J. Looser, Roberto Maiolino, Chris Willott, Zuyi Chen, Jakob M. Helton, Jianwei Lyu, Erica Nelson, Rachana Bhatawdekar, Kristan Boyett, Lester Sandles   +32 more
doaj   +1 more source

The Radiative–Convective Gap: Fact or Fiction?

The Astronomical Journal
Gaia characterizes the stellar populations of nearby open clusters with unprecedented precision. We investigate the Böhm-Vitense gap, which has been found as a prominent feature in the stellar sequence of open clusters. Using PARSEC isochrone fitting, we
Wolfgang Brandner, Artur Sorg, Siegfried Röser, Elena Schilbach   +3 more
doaj   +1 more source

Evolution of the Lithium–Rotation Correlation in Open Cluster F Dwarfs and a New Age Indicator

The Astrophysical Journal Letters
The Lithium Dip is a severe nonstandard depletion of surface Li in F dwarfs that occurs during the main sequence. We present Li and $v\sin i$ measurements from WIYN/Hydra and CTIO/Hydra spectra of four open clusters whose ages span the range between that
Aaron Steinhauer, Constantine P. Deliyannis   +1 more
doaj   +1 more source

Asteroseismically Inferred Ages of 132,000 Red Giants with TESS

The Astrophysical Journal Supplement Series
NASA’s Transiting Exoplanet Survey Satellite mission has identified at least 158,000 oscillating red giants, increasing the known sample by roughly an order of magnitude.
Artemis Theano Theodoridis, Leslie Morales, Jamie Tayar   +2 more
doaj   +1 more source

Initial Mass Functions of Young Stellar Clusters from the Gemini Spectroscopic Survey of Nearby Galaxies. I. Young Massive Clusters in the Antennae Galaxies

The Astronomical Journal
The stellar initial mass function (IMF) is a key parameter to understand the star formation process and the integrated properties of stellar populations in remote galaxies.
Jae-Rim Koo, Hyun-Jeong Kim, Beomdu Lim
doaj   +1 more source

The correlation between mixing length and metallicity on the giant branch: implications for ages in the Gaia era

, 2017
In the updated APOGEE-Kepler catalog, we have asteroseismic and spectroscopic data for over 3000 first ascent red giants. Given the size and accuracy of this sample, these data offer an unprecedented test of the accuracy of stellar models on the post ...
Mints, Alexey, Cunha, Katia, Stassun, Keivan, Serenelli, Aldo, Basu, Sarbani, Roman-Lopes, A., Somers, Garrett, Tayar, Jamie, Bird, J.C., Girardi, Leo, Holtzman, John, Shetrone, Matthew, S, Zasowski, Gail, Stringfellow, Guy, S, Johnson, Jennifer A., Pinsonneault, Marc H., Maraston, Claudia, Aguirre, Victor Silva, Cohen, R.E., García-Hernandez, D.A., Stello, Dennis, Elsworth, Yvonne, Garcia, Rafael A., Mosser, B., Bastien, Fabienne, A., Zamora, O., Huber, Daniel, Mészáros, Szabolcs, S, Hekker, Saskia, Prieto, Carlos Allende, Mathur, Savita   +30 more
core  

Machine learning-enabled membership determination of open cluster AH03_J0748-26.9 using Gaia DR3 astrometry. [PDF]

Sci Rep
Badawy WA, Abdel Rahman HI.
europepmc   +1 more source

Discovery of a star sensitive to the spin of Sagittarius A. [PDF]

Nature
Abd El Dayem K, Abuter R, Aimar N, Amaro-Seoane P, Berdeu A, Berger JP, Bourdarot G, Brandner W, Burkert A, Caldéron D, Correia C, Cuadra J, Davies R, Defrère D, Delit L, Drescher A, Eisenhauer F, Esteras Otal L, Fabricius M, Feuchtgruber H, Flesch S, Förster Schreiber NM, Foschi A, Fournier Q, Garcia P, Garcia Lopez R, Generozov A, Genzel R, Gillessen S, Gonté F, Haubois X, Hönig SF, Houllé M, Joharle S, Kaufer A, Kammerer J, Kervella P, Kolb J, Kreidberg L, Labadie L, Lacour S, Lai O, Laugier R, Le Bouquin JB, Leftley J, Li R, Lopez B, Lutz D, Mang F, Mérand A, Millour F, Montargès M, Morujão N, Nowacki H, Nowak M, Oberti S, Osorno J, Ott T, Paumard T, Paladini C, Pappert S, Perets HB, Perraut K, Perrin G, Petrov R, Petrucci PO, Piran T, Pourré N, Rabien S, Ribeiro DC, Robbe-Dubois S, Sadun Bordoni M, Sanchez-Bermudez J, Santos D, Sari R, Sauter J, Scheithauer S, Scigliuto J, Shangguan J, Shimizu TT, Soulez F, Stadler J, Straubmeier C, Sturm E, Subroweit M, Sykes C, Tacconi LJ, Thévenet P, Urso I, Vincent F, Woillez J, Zins G, GRAVITY+ Collaboration.   +92 more
europepmc   +1 more source

The Cluster Completeness Correction Calculator (c-4): a neural-network framework and pilot application to the LEGUS survey of NGC 628. [PDF]

Mon Not R Astron Soc
Tang J, Grasha K, Różański T, Krumholz MR, Zhang A.   +4 more
europepmc   +1 more source

B-type host stars revealed by exoplanets around massive secondary-clump giant stars. [PDF]

Nat Commun
Lin WX, Qian SB, Sun QB, Zhu LY, Liao WP, Li T, Li FX, Liu L, Shi XD, Li L, Zhao E, Zhang H, Li P, Li J, Lian M.   +14 more
europepmc   +1 more source