Results 31 to 40 of about 174,695 (330)

Galaxy modelling through stellar population synthesis

EPJ Web of Conferences, 2012
In recent years, models of the Galaxy based on the spirit of population synthesis have considerably helped to improve our knowledge on the Galaxy and its formation scenario.
Robin A.C.
doaj   +1 more source

STELLAR POPULATION VARIATIONS IN THE MILKY WAY's STELLAR HALO [PDF]

The Astronomical Journal, 2010
If the stellar halos of disk galaxies are built up from the disruption of dwarf galaxies, models predict highly structured variations in the stellar populations within these halos. We test this prediction by studying the ratio of blue horizontal branch stars (BHB stars; more abundant in old, metal-poor populations) to main-sequence turn-off stars (MSTO
Bell, Eric F., Xue, Xiang Xiang, Rix, Hans-Walter, Ruhland, Christine, Hogg, David W.   +4 more
openaire   +2 more sources

The Stellar Ages and Masses of Short GRB Host Galaxies: Investigating the Progenitor Delay Time Distribution and the Role of Mass and Star Formation in the Short GRB Rate

, 2010
[Abridged] We present optical and NIR observations of 19 short GRB host galaxies, aimed at measuring their stellar masses and population ages. The goals of this study are to evaluate whether short GRBs track the stellar mass distribution of galaxies, to ...
Belczynski, Bell, Berger, Berger, Berger, Berger, Berger, Bloom, Brandt, C. N. Leibler, Conroy, E. Berger, Fong, Gehrels, Graham, Hamuy, Ilbert, Kann, Lazzati, Levesque, Levesque, Levesque, Nysewander, Ofek, Paczynski, Qin, Rowlinson, Savaglio, Schlegel, Soderberg, Stanek, Sullivan, Thöne, Virgili, Zhang, Zhang, Zheng   +36 more
core   +1 more source

Hubble Space Telescope Imaging of the Ultra-Compact High Velocity Cloud AGC 226067: A stripped remnant in the Virgo Cluster

, 2017
We analyze the optical counterpart to the ultra-compact high velocity cloud AGC 226067, utilizing imaging taken with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope.
Adams, E. A. K., Caldwell, N., Crnojević, D., Guhathakurta, P., Kenney, J., Randall, S., Sand, D. J., Seth, A. C., Simon, J. D., Spekkens, K., Strader, J., Toloba, E., Willman, B.   +12 more
core   +1 more source

RAD50 missense variants differentially affect the DNA damage response and mitotic progression

FEBS Letters, EarlyView.
RAD50 incorporates into the MRN complex and initiates the DNA damage response. Furthermore, RAD50 promotes mitotic progression. RAD50 missense variants capable of forming an MRN complex supported the DNA damage response and mitotic features to different extents in complementation experiments, indicating these functions are separable and might impact ...
Hanna Redeker, Swantje Kebel, Lea Völkening, Anna Vatselia, Louisa Weinhold, Girmay Asgedom, Axel Schambach, Detlev Schindler, Thilo Dörk, Kristine Bousset   +9 more
wiley   +1 more source

The Carnegie-Irvine Galaxy Survey. X. Bulges in Stellar Mass–based Scaling Relations

The Astrophysical Journal Supplement Series, 2022
We measure optical colors for the bulges of 312 disk galaxies from the Carnegie-Irvine Galaxy Survey and convert their previously available R -band structural parameters to stellar-mass parameters.
Hua Gao, Luis C. Ho, Zhao-Yu Li
doaj   +1 more source

Evolutionary population synthesis for binary stellar populations [PDF]

Astronomy & Astrophysics, 2004
We present integrated colours, integrated spectral energy distributions, and absorption-line indices, for instantaneous burst solar-metallicity binary stellar populations with ages in the range l-15Gyr. By comparing the results for populations with and without binary interactions we show that the inclusion of binary interactions makes the appearance of
Zhang, F., Han, Z., Li, L., Hurley, J. R.   +3 more
openaire   +3 more sources

The red stellar population in NGC 1569 [PDF]

, 2000
We present HST NICMOS photometry of the resolved stellar population in NGC 1569. The CMD in the F110W and F160W photometric bands contains ~2400 stars with a formal photometric error < 0.1 mag down to J~23.5 and H~22.5.
A. Aloisi, A. Nota, Babul A., Claus Leitherer, Cole S., E. Diolaiti, Fagotto F., Fagotto F., G. Parmeggiani, Greve A., Israel F. P., Israel F. P., Kauffmann G., L. Greggio, L. Origlia, Legrand F., M. Clampin, M. Tosi, Melnick J., Moller C. S., Papaderos P., Prada F., Stil J. M., Taylor C. L., Tomita A., Vallenari A.   +25 more
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

The Chemodynamical Nature of the Triangulum–Andromeda Overdensity

The Astrophysical Journal, 2023
We present a chemodynamical study of the Triangulum–Andromeda overdensity (TriAnd) employing a sample of 31 candidate stars observed with the GRACES high-resolution ( R = 40,000) spectrograph at the Gemini North (8.1 m) telescope.
Yuri Abuchaim, Hélio D. Perottoni, Silvia Rossi, Guilherme Limberg, Angeles Pérez-Villegas, Rafael M. Santucci, Vinicius M. Placco, João V. Sales-Silva, Friedrich Anders, Helio J. Rocha-Pinto   +9 more
doaj   +1 more source