Results 91 to 100 of about 3,384 (302)

A Spectroscopic Survey of Metal-poor OB Stars in Local Dwarf Galaxy NGC 3109

The Astrophysical Journal
As JWST uncovers increasingly strong evidence that metal-poor, massive stars in early galaxies dominated reionization, observational constraints on the properties of such stars are more relevant than ever before.
Abby Mintz, O. Grace Telford, Evan N. Kirby, John Chisholm, Kristen B. W. McQuinn, Danielle A. Berg   +5 more
doaj   +1 more source

The Uv Spectral Window: New Means To Constrain The Stellar Populations Of Early-Type Galaxies

, 2017
We discuss the possibilities of exploiting the UV spectral using the J-PAS survey to disentangle young contributions from apparently old galaxies. We show that the feasibility of determining such young stellar components in early-type galaxies at moderately high redshift.
Vazdekis, Alexandre, Salvador-Rusiñol, Núria, Falcón-Barroso, Jesus, Beasley, Michael, Ricciardelli, Elena   +4 more
openaire   +2 more sources

Clinical performance of the urine‐based TERT promoter AbsoluteQ Digital PCR for non‐invasive detection of bladder cancer

Molecular Oncology, EarlyView.
A urine‐based digital PCR assay targeting two hotspot TERT promoter variants detected bladder cancer with high sensitivity and no false positives in this case–control cohort. The streamlined AbsoluteQ workflow outperformed Sanger sequencing and supports non‐invasive molecular testing for bladder cancer detection.
Anna Nykel, Izabela Kubiak, Lena Rutkowska, Żaneta Kasprzyk, Łukasz Kępczyński, Michał Bednarek, Dariusz Sobieraj, Jacek Wilkosz, Piotr Kania, Adam Jędrzejczyk, Bogdan Kałużewski, Agnieszka Gach, Tadeusz Kałużewski   +12 more
wiley   +1 more source

Galaxy And Mass Assembly (GAMA): the wavelength-dependent sizes and profiles of galaxies revealed by MegaMorph [PDF]

, 2014
We investigate the relationship between colour and structure within galaxies using a large, volume-limited sample of bright, low-redshift galaxies with optical-near-infrared imaging from the Galaxy AndMass Assembly survey.We fit single-component ...
Loveday, J, Popescu, Cristina C., Vulcani, B., Graham, AW, Agius, NK, Baldry, I., Marina Vika (16220000), Simon Driver (2803993), Tuffs, RJ, Kelvin, L., Robotham, ASG, Robotham, A., Liske, J, Haeussler, Boris, Jonathan Loveday (4460899), Tuffs, R., Driver, S, Bamford, S. P., Nicola K Agius (16219928), Steven P Bamford (16070231), Agius, N., Jochen Liske (16219886), Popescu, Cristina, Bauer, A. E., Tuffs, Richard J., Brown, M. J. I., Rojas, Alex L., Benedetta Vulcani (16219994), Kelvin, Lee, Michael J I Brown (16219880), Rojas, A, Alex Rojas (1853125), Loveday, J., Alister W Graham (16219823), Rojas, Alex, Haussler, B., Boris Häußler (16219997), Vulcani, B, Häußler, Boris, Liske, J., Vika, Marina, Bauer, A., Robotham, A, Lee S Kelvin (16219820), Aaron S G Robotham (16219817), Brown, MJI, Loveday, Jon, Vika, M, Tuffs, R. J., Vulcani, Benedetta, Robotham, A. S. G., Bauer, A.E., Liske, Jochen, Haubler, B, Vika, M., Robotham, A.S.G., Graham, A. W., Baldry, I, Bamford, Steven, Bamford, S., Ivan Baldry (16219901), Tuffs, R, Graham, A., Cristina C Popescu (16219973), Agius, N. K., Kelvin, LS, Bamford, Steven P., Agius, N, Brown, Michael, Agius, N.K., Browne, William J.I., Driver, Simon, Popescu, CC, Driver, S., Baldry, Ivan K., Bauer, AE, Robotham, Aaron S. G., Popescu, C., Agius, Nicola K., Richard J Tuffs (16219979), Graham, Alister W., Bamford, SP, Kelvin, L. S., Rojas, A., Baldry, Ivan, Kelvin, Lee S., Graham, Alister, Bauer, Amanda E., Brown, M., Brown, Michael J. I., Bauer, A, Amanda E Bauer (16219964), Haeussler, B   +92 more
core   +1 more source

Flow Enabled Target Capture Halbach‐based magnetic enrichment increases circulating tumor cell capture from blood in metastatic cancer patients

Molecular Oncology, EarlyView.
Pair‐wise comparison of the CellSearch and FETCH enrichment technologies for circulating tumor cells (CTCs) from metastatic breast, prostate, and small cell lung cancer patients shows an increased capture of CTCs using FETCH enrichment. The clinical implementation of circulating tumor cells (CTCs) as a predictive tool for therapy efficacy in the ...
Michiel Stevens, Anouk Mentink, Tom Niessink, Frank Coumans, Leonie Mekenkamp, Ruchi Bansal, Jeroen Hiltermann   +6 more
wiley   +1 more source

Estimating Stellar Atmospheric Parameters and [α/Fe] for LAMOST O-M-type Stars Using a Spectral Emulator

The Astrophysical Journal Supplement Series
Abstract In this paper, we developed a spectral emulator based on the Mapping Nearby Galaxies at Apache Point Observatory Stellar Library (MaStar) and a grouping optimization strategy to estimate effective temperature (T eff), surface gravity (log g), metallicity ([Fe/H]), and the abundance of alpha elements with ...
Jun-Chao Liang, A-Li Luo, Yin-Bi Li, Xiao-Xiao Ma, Shuo Li, Shu-Guo Ma, Hai-Ling Lu, Yun-Jin Zhang, Bing Du, Xiao Kong   +9 more
openaire   +3 more sources

Revista Mexicana de Astronoma y Astrofsica, 38, 127--140 (2002)

, 2007
The method developed by Stock & Stock (1999) for stars of spectral types A to K to derive absolute magnitudes and intrinsic colors from the equivalent widths of absorption lines in stellar spectra is extended to B-type stars.
J. Stock, J. García, Quantitative Stellar Spectral, M. J. Stock, N. Sánchez   +4 more
core  

Validation of Elemental and Isotopic Abundances in Late-M Spectral Types with the Benchmark HIP 55507 AB System [PDF]

M dwarfs are common host stars to exoplanets but often lack atmospheric abundance measurements. Late-M dwarfs are also good analogs to the youngest substellar companions, which share similar T _eff ∼ 2300–2800 K.
Hsu, Chih-Chun, Phillips, Mark W., Sanghi, Aniket, Andrew Skemer, Echeverri, Daniel, Pezzato, Jacklyn, Jerry W. Xuan, Baker, Ashley, Nemanja Jovanovic, Calvin, Benjamin, Gonzales, Erica J., Marta L. Bryan, Wallace, J. Kent, Ronald A. López, Do Ó, Clarissa R., Nicole L. Wallack, Jacklyn Pezzato, Taylor Venenciano, Zhang, Yapeng, Fitzgerald, Michael P., Luke Finnerty, Dai, Fei, Aniket Sanghi, Wang, Ji, Ruffio, Jean-Baptiste, Cetre, Sylvain, Andrew W. Howard, Howard Isaacson, Caprice L. Phillips, Agrawal, Shubh, Charlotte Z. Bond, Inglis, Julie, Venenciano, Taylor, Walker, Sam, Wallack, Nicole L., Peter Wizinowich, Jacques-Robert Delorme, Daniel Echeverri, Jovanovic, Nemanja, Evan Morris, Bartos, Randall, Eric Nielsen, Grimm, Simon, Yapeng Zhang, Joshua Liberman, Knutson, Heather A., Horstman, Katelyn, Wizinowich, Peter, Bryan, Marta L., Tobias Schofield, Greg Doppmann, Michael P. Fitzgerald, Dimitri Mawet, Shubh Agrawal, Lopez, Ronald A., Sylvain Cetre, Ruane, Garreth, Finnerty, Luke, Xin, Yinzi, Jason Wang, Julie Inglis, Nielsen, Eric, Martin, Emily C., Anne E. Peck, Fei Dai, Howard, Andrew W., Clarissa R. Do Ó, Ashley Baker, Geoffrey A. Blake, Wang, Jason, Simon Grimm, Jean-Baptiste Ruffio, Sappey, Ben, Peck, Anne E., Sam Walker, Doppmann, Greg, Garreth Ruane, Schofield, Tobias, Xuan, Jerry W., Katelyn Horstman, Michael C. Liu, Benjamin Calvin, Yinzi Xin, Bond, Charlotte Z., Ben Sappey, Phillips, Caprice L., Liu, Michael C., Delorme, Jacques-Robert, Morris, Evan, Ji Wang, Isaacson, Howard, Randall Bartos, Chih-Chun Hsu, Liberman, Joshua, Blake, Geoffrey A., Skemer, Andrew, Heather A. Knutson, J. Kent Wallace, Erica J. Gonzales, Mawet, Dimitri, Mark W. Phillips, Emily C. Martin   +101 more
core   +1 more source

Magnetic Activity in M-type Stars Based on LAMOST DR11 and TESS Observations

The Astrophysical Journal Supplement Series
We have used 898,351 M-type stellar spectra released by Large Sky Area Multi-Object Fiber Spectroscopic Telescope DR11 to calculate the equivalent width of the Ca II infrared triplet (IRT) lines, the residual chromospheric emission, and the parameter ${R}
Linfeng Ren, Li-yun Zhang, Xianming L. Han, Tianhao Su, Wenjie Li, Yinpeng Wang, Prabhakar Misra   +6 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source