Results 61 to 70 of about 83,866 (252)

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

From Halos to Galaxies. X. Decoding Galaxy SEDs with Physical Priors and Accurate Star Formation History Reconstruction

The Astrophysical Journal
The spectral energy distribution (SED) of galaxies is essential for deriving fundamental properties like stellar mass and star formation history (SFH). However, conventional methods, including both parametric and nonparametric approaches, often fail to ...
Zeyu Gao, Yingjie Peng, Kai Wang, Luis C. Ho, Alvio Renzini, Anna R. Gallazzi, Filippo Mannucci, Houjun Mo, Yipeng Jing, Xiaohu Yang, Enci Wang, Dingyi Zhao, Jing Dou, Qiusheng Gu, Cheqiu Lyu, Roberto Maiolino, Bitao Wang, Yu-Chen Wang, Bingxiao Xu, Feng Yuan, Xingye Zhu   +20 more
doaj   +1 more source

Biases and Uncertainties in Physical Parameter Estimates of Lyman Break Galaxies from Broad-band Photometry

, 2008
We investigate the biases and uncertainties in estimates of physical parameters of high-redshift Lyman break galaxies (LBGs), such as stellar mass, mean stellar population age, and star formation rate (SFR), obtained from broad-band photometry.
Adelberger, Ando, Calzetti, Conroy, Drory, Finkelstein, Giavalisco, Giavalisco, Henry C. Ferguson, Hopkins, Idzi, Idzi, Koekemoer, Labbé, Lai, Lee, Lowenthal, Madau, Mauro Giavalisco, Nagamine, Papovich, Papovich, Papovich, Pettini, Rachel S. Somerville, Rafal Idzi, Ravindranath, Rhoads, Sawicki, Sawicki, Scoville, Seong-Kook Lee, Shapley, Shapley, Shapley, Shim, Stark, Steidel, Steidel, Steidel, Steidel, Tommy Wiklind, Vanzella, Wuyts, Yan   +44 more
core   +1 more source

The Age of Ellipticals and the Color-Magnitude Relation [PDF]

, 2009
Using new narrowband color observations of early-type galaxies in clusters, we reconstruct the color-magnitude relation (CMR) with a higher degree of accuracy than previous work.
Atlee, Bahcall, Baldry, Balogh, Balogh, Bernardi, Bower, Caldwell, Cid Fernandes, Clemens, Cordier, De Angeli, Franzetti, González, Graves, Graves, Harris, James Schombert, Karl Rakos, Kauffmann, Kaviraj, Kelson, Kelson, Kodama, Larson, Li, Lisker, MacArthur, Marín-Franch, Matteucci, Matteucci, Mei, Odell, Percival, Rakos, Rakos, Rakos, Rakos, Rakos, Rakos, Schiavon, Schombert, Thomas, Trager, Worthey, Worthey, Wyder, Yi   +47 more
core   +1 more source

The ages of quasar host galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
24 pages, LaTeX, uses MNRAS style file, incorporates 19 postscript figures, final version, to be published in ...
Nolan, Louisa A., Dunlop, James S., Kukula, Marek J., Hughes, David H., Boroson, Todd, Jimenez, R.   +5 more
openaire   +2 more sources

Stellar Populations with MaNGA: Iron Kink and Nitrogen Fuzz

The Astrophysical Journal
Recent analysis of 2968 MaNGA early-type galaxies has yielded two notable trends with velocity dispersion ( σ ) not previously discussed in the literature. First, Fe abundance rises with σ but only until σ  ≈ 100 km s ^−1 , after which it falls.
Guy Worthey, Tathagata Pal
doaj   +1 more source

The short-duration GRB 050724 host galaxy in the context of the long-duration GRB hosts

, 2006
We report optical and near-infrared broad band observations of the short-duration GRB 050724 host galaxy, used to construct its spectral energy distribution (SED).
A. Antonelli, A. de Ugarte Postigo, A. J. Castro-Tirado, A. Melandri, Berger, Bertin, Bloom, Bolzonella, Burstein, Calzetti, Cardelli, Castro-Tirado, Chary, Christensen, Cimatti, Covino, D. Malesani, D. Martín-Gordón, D. Reverte, Duc, Fitzpatrick, Fynbo, Gehrels, Gorosabel, Gorosabel, Gorosabel, Hjorth, Hjorth, Hurley, J. Gorosabel, J. M. Castro Cerón, Kennicutt, Kouveliotou, Landolt, M. Jelínek, Miller, N. Elias de la Rosa, O. Bogdanov, Pedersen, Prévot, S. Covino, S. Guziy, Salpeter, Scalo, Schechter, Schlegel, Seaton, Stanek, Tanvir, Yi   +49 more
core   +1 more source

Radial Gradients and Intrinsic Scatter in MaNGA Galaxies

The Astrophysical Journal Supplement Series
We derive stellar population parameters and radial gradients within 0.65 R _e for spatially resolved spectra of 2968 early-type galaxies from MaNGA, spanning stellar velocity dispersions ( σ ) of 50–340 km s ^−1 .
Tathagata Pal, Guy Worthey
doaj   +1 more source

Disentangling Stellar Age Estimates from Galactic Chemodynamical Evolution

The Astrophysical Journal, 2023
Stellar ages are key for determining the formation history of the Milky Way, but are difficult to measure precisely. Furthermore, methods that use chemical abundances to infer ages may entangle the intrinsic evolution of stars with the chemodynamical ...
Jeff Shen, Joshua S. Speagle, J. Ted Mackereth, Yuan-Sen Ting, Jo Bovy   +4 more
doaj   +1 more source

MUC1 as a Survival Effector of Radiotherapy‐Induced Epithelial Hybrid States in Basal‐Like Breast Cancer

International Journal of Cancer, EarlyView.
Basal‐like breast cancer (BLBC) is aggressive and often exhibits inherent or acquired resistance to radiotherapy (RT), a primary treatment option. RT resistance is underpinned by molecular alterations, many of which are poorly understood. Here, RT‐induced transcriptomic changes were analyzed using bulk and spatial sequencing in a BLBC mouse model and ...
Garyfallia Pantelaiou‐Prokaki, Husam Bamahmoud, Nadine S. Georges, Shaishavi Jansari, Annika Jung, Daniela Grimm, Evangelos Prokakis, Fabian Alexander Gayer, Maryam Deldar, Christian Dullin, Julia Gallwas, Florian Wegwitz, Frauke Alves   +12 more
wiley   +1 more source