Results 81 to 90 of about 64,475 (321)

Satellite abundances around bright isolated galaxies

, 2012
We study satellite galaxy abundances in SDSS by counting photometric galaxies around isolated bright primaries. We present results as a function of the luminosity, stellar mass and colour of the satellites, and of the stellar mass and colour of the ...
Abazajian, Aihara, Alshino, Andreon, Ann, Benson, Berlind, Blanton, Blanton, Bode, Bower, Boylan-Kolchin, Boylan-Kolchin, Boylan-Kolchin, Boylan-Kolchin, Bullock, Capak, Chabrier, Chen, Christlein, Cole, Conroy, Conroy, Conroy, Cooray, Croton, Cunha, de Filippis, De Lucia, De Propris, Driver, Driver, Fall, Font, Goto, Grebel, Grebel, Grebel, Grebel, Guo, Guo, Guo, Hansen, Henriques, Henriques, Holmberg, Jing, Jing, Kang, Kauffmann, Kauffmann, Kauffmann, Kauffmann, Klypin, Koposov, Koposov, Kravtsov, Lacey, Lares, Li, Liu, Lorrimer, Lovell, Ma, Macciò, Mandelbaum, Mandelbaum, Mandelbaum, Montero-Dorta, Moore, Moore, More, Moster, Navarro, Navarro, Nierenberg, Paolillo, Peacock, Phillipps, Popesso, Popesso, Prada, Prescott, Ross, Sales, Sales, Sales, Sargent, Scarlata, Schechter, Scoville, Seljak, Sersic, Simard, Simon, Simon, Simon D. M. White, Skibba, Smith, Somerville, Somerville, Spergel, Spergel, Springel, Springel, Tal, Tal, Tasitsiomi, Tollerud, Tollerud, Vader, Vale, Walsh, Wang, Weinmann, Weinmann, Weinmann, Wenting Wang, Westra, White, White, Willman, Yang, Yang, York, Yoshida, Zandivarez, Zaritsky, Zaritsky, Zavala, Zhao, Zheng   +131 more
core   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Fluorine Abundances in Local Stellar Populations

The Astronomical Journal
We present the first fluorine measurements in 12 normal K giants belonging to the Galactic thin and thick disks using spectra obtained with the Phoenix infrared spectrometer on the 2.1 m telescope at Kitt Peak. Abundances are determined from the (1−0) R9
K. E. Brady, C. A. Pilachowski, V. Grisoni, Z. G. Maas, K. A. Nault   +4 more
doaj   +1 more source

Ruthenium and hafnium abundances in giant and dwarf barium stars

, 2007
We present abundances for Ru and Hf, compare them to abundances of other heavy elements, and discuss the problems found in determining Ru and Hf abundances with laboratory gf-values in the spectra of barium stars.
Allen, Allen, Arlandini, Barbuy, Boyarchuk, Böhm-Vitense, Böhm-Vitense, Cayrel, D. M. Allen, Edvardsson, G. F. Porto de Mello, Gallino, Grevesse, Gustafsson, Hill, Honda, Jorissen, Kaufer, Lawler, Luck, Lundqvist, Masseron, Meléndez, North, Piskunov, Plez, Smiljanic, Smith, Sneden, Spite, Tomkin, Yushchenko   +31 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Anchoring Stellar Age Indicators: A Cross Calibration of [C/N] and Gyrochronology Ages via the Age–Velocity Dispersion Relation

The Astronomical Journal
Determining stellar ages is challenging, as it depends on other stellar parameters in a nonlinear way and often relies on stellar evolution models to infer the underlying relation between these parameters and age. This complexity increases when comparing
Yuxi(Lucy) Lu, Marc H. Pinsonneault, Yuan-Sen Ting, Phil R. Van-Lane, John D. Roberts, Jamie Tayar, Alexander Stone-Martinez, Amanda L. Ash   +7 more
doaj   +1 more source

Selecting a Photometric System for Gaia: C, N, O and Alpha-Process Elements

Open Astronomy, 2003
The sensitivity of stellar spectra to C, N, O and α-process element abundances is discussed with the aim of taking this effect into account when selecting a photometric system for the Gaia orbiting observatory.
Tautvaišienė G., Edvardsson B., Bartašiūtė S.   +2 more
doaj   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

Primordial Lithium from Globular Cluster Turnoff Stars: M13 and M71

The Astrophysical Journal
During Big Bang nucleosynthesis (BBN) in the first 15 minutes of the Universe, some ^7 Li was created along with isotopes of H and He. The determination of that primordial value of Li can help constrain the conditions at that time.
Ann Merchant Boesgaard, Constantine P. Deliyannis   +1 more
doaj   +1 more source

Predictions for complex distributions of stellar elemental abundances in low-mass galaxies [PDF]

, 2022
P. Patel, Sarah Loebman, Andrew Wetzel, Claude‐André Faucher‐Giguère, Kareem El-Badry, Jeremy Bailin   +5 more
openalex   +1 more source