Results 111 to 120 of about 108,892 (343)

Azimuthal Misalignments in Stellar Warp Structure as Dynamical Tracers of Mergers in Milky Way–like Galaxies

The Astrophysical Journal Letters
We investigate the origin of warps in stellar disks using high-resolution Milky Way analogs from the IllustrisTNG50 simulation. Focusing on galaxies that experienced a major merger, we identify a characteristic azimuthal misalignment between the warp ...
Lekshmi Thulasidharan, Elena D’Onghia, Robert Benjamin   +2 more
doaj   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

THE STELLAR POPULATIONS OF LYMAN BREAK GALAXIES ATz∼ 5 [PDF]

, 2009
Kiyoto Yabe, Kouji Ohta, Ikuru Iwata, Marcin Sawicki, Naoyuki Tamura, Masayuki Akiyama, Kentaro Aoki   +6 more
openalex   +1 more source

Bridging Model and Observed Stellar Spectra

, 2010
Accurate model stellar fluxes are key for the analysis of observations of individual stars or stellar populations. Model spectra differ from real stellar spectra due to limitations of the input physical data and adopted simplifications, but can be ...
Allende Prieto, Allende Prieto, Allende Prieto, Allende Prieto, Asplund, Bautista, Bohlin, Bohlin, Bohlin, Bruzual, C. Allende Prieto, Castelli, Cenarro, Cenarro, Coelho, Colina, Cunto, Fitzpatrick, García-Gil, González Delgado, Gregg, Irwin, Koesterke, Koesterke, Le Borgne, Mermilliod, Nahar, Ramírez, Schiavon, Stix, Sánchez-Blázquez, Tsuji, Tsuji, Vazdekis   +33 more
core   +1 more source

Stellar populations and ages of M82 super star clusters [PDF]

, 1999
J. S. Gallagher, L. J. Smith
openalex   +1 more source

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

New Rotation Periods from the Kepler Bonus Background Light Curves

The Astrophysical Journal
The Kepler field hosts the best-studied sample of field star rotation periods. However, due to Kepler’s large 4″ pixels, many of its light curves are at high risk of contamination from background sources.
Zachary R. Claytor, Jamie Tayar
doaj   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies–2. Importance of AGN Feedback Suggested by Stellar Age–Velocity Dispersion Relation

Frontiers in Astronomy and Space Sciences, 2017
We present the galactic stellar age—velocity dispersion relation obtained from a semi-analytic model of galaxy formation. We divide galaxies into two populations: galaxies which have over-massive/under-massive black holes (BHs) against the best-fitting ...
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Tomoaki Ishiyama   +3 more
doaj   +1 more source

Stellar populations in the Magellanic Clouds: looking through the dust

, 2007
We present the first results of our study of stellar populations in the Large and Small Magellanic Clouds based on multi-band WFPC2 observations of "random" fields taken as part of the "pure parallel" programme carried out with the HST as a service to ...
De Marchi, Guido De Marchi, Martino Romaniello, Nino Panagia, Panagia   +4 more
core   +2 more sources

Chemical abundances of multiple stellar populations in massive globular clusters [PDF]

, 2015
A. F. Marino
openalex   +1 more source