Zobrazeno 1 - 10
of 419
pro vyhledávání: '"David H Weinberg"'
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 122 (2024)
The scale of α -element yields is difficult to predict from theory because of uncertainties in massive star evolution, supernova physics, and black hole formation, and it is difficult to constrain empirically because the impact of higher yields can
Externí odkaz:
https://doaj.org/article/9710525c1d0346d3809a94acae78b5e5
Autor:
Tawny Sit, David H. Weinberg, Adam Wheeler, Christian R. Hayes, Sten Hasselquist, Thomas Masseron, Jennifer Sobeck
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 180 (2024)
Stellar abundance measurements are subject to systematic errors that induce extra scatter and artificial correlations in elemental abundance patterns. We derive empirical calibration offsets to remove systematic trends with surface gravity $\mathrm{l
Externí odkaz:
https://doaj.org/article/8d891a02ded042beb589f27e1876a76f
Autor:
Emily J. Griffith, David W. Hogg, Julianne J. Dalcanton, Sten Hasselquist, Bridget Ratcliffe, Melissa Ness, David H. Weinberg
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 98 (2024)
The element abundance pattern found in Milky Way disk stars is close to two-dimensional, dominated by production from one prompt process and one delayed process. This simplicity is remarkable, since the elements are produced by a multitude of nucleos
Externí odkaz:
https://doaj.org/article/7484b8e022b440d491632bb3e82be226
Autor:
Chun-Hao To, Joseph DeRose, Risa H. Wechsler, Eli Rykoff, Hao-Yi Wu, Susmita Adhikari, Elisabeth Krause, Eduardo Rozo, David H. Weinberg
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 59 (2024)
We present the Cardinal mock galaxy catalogs, a new version of the Buzzard simulation that has been updated to support ongoing and future cosmological surveys, including the Dark Energy Survey (DES), DESI, and LSST. These catalogs are based on a one-
Externí odkaz:
https://doaj.org/article/57a146860cf440e5995ffc1be63e2809
Autor:
Julie Imig, Cathryn Price, Jon A. Holtzman, Alexander Stone-Martinez, Steven R. Majewski, David H. Weinberg, Jennifer A. Johnson, Carlos Allende Prieto, Rachael L. Beaton, Timothy C. Beers, Dmitry Bizyaev, Michael R. Blanton, Joel R. Brownstein, Katia Cunha, José G. Fernández-Trincado, Diane K. Feuillet, Sten Hasselquist, Christian R. Hayes, Henrik Jönsson, Richard R. Lane, Jianhui Lian, Szabolcs Mészáros, David L. Nidever, Annie C. Robin, Matthew Shetrone, Verne Smith, John C. Wilson
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 124 (2023)
We present new maps of the Milky Way disk showing the distribution of metallicity ([Fe/H]), α -element abundances ([Mg/Fe]), and stellar age, using a sample of 66,496 red giant stars from the final data release (DR17) of the Apache Point Observatory
Externí odkaz:
https://doaj.org/article/372a9bd65ffb4b6bb837d6786f2d6015
Autor:
ChangHoon Hahn, Michael J. Wilson, Omar Ruiz-Macias, Shaun Cole, David H. Weinberg, John Moustakas, Anthony Kremin, Jeremy L. Tinker, Alex Smith, Risa H. Wechsler, Steven Ahlen, Shadab Alam, Stephen Bailey, David Brooks, Andrew P. Cooper, Tamara M. Davis, Kyle Dawson, Arjun Dey, Biprateep Dey, Sarah Eftekharzadeh, Daniel J. Eisenstein, Kevin Fanning, Jaime E. Forero-Romero, Carlos S. Frenk, Enrique Gaztañaga, Satya Gontcho A Gontcho, Julien Guy, Klaus Honscheid, Mustapha Ishak, Stéphanie Juneau, Robert Kehoe, Theodore Kisner, Ting-Wen Lan, Martin Landriau, Laurent Le Guillou, Michael E. Levi, Christophe Magneville, Paul Martini, Aaron Meisner, Adam D. Myers, Jundan Nie, Peder Norberg, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Anand Raichoor, Ashley J. Ross, Sasha Gaines, Christoph Saulder, Eddie Schlafly, David Schlegel, David Sierra-Porta, Gregory Tarle, Benjamin A. Weaver, Christophe Yèche, Pauline Zarrouk, Rongpu Zhou, Zhimin Zhou, Hu Zou
Publikováno v:
The Astronomical Journal, Vol 165, Iss 6, p 253 (2023)
Over the next 5 yr, the Dark Energy Spectroscopic Instrument (DESI) will use 10 spectrographs with 5000 fibers on the 4 m Mayall Telescope at Kitt Peak National Observatory to conduct the first Stage IV dark energy galaxy survey. At z < 0.6, the DESI
Externí odkaz:
https://doaj.org/article/72f497f0d74c4723b6c59ce03a1a8b96
Autor:
Emily J. Griffith, Jennifer A. Johnson, David H. Weinberg, Ilya Ilyin, James W. Johnson, Romy Rodriguez-Martinez, Klaus G. Strassmeier
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 47 (2023)
We measure abundances of 12 elements (Na, Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni) in a sample of 86 metal-poor (−2 ≲ [Fe/H] ≲ −1) subgiant stars in the solar neighborhood. Abundances are derived from high-resolution spectra taken with the
Externí odkaz:
https://doaj.org/article/51128a44faf1471da3cbfb5dc504efbd
Autor:
Andrew P. Cooper, Sergey E. Koposov, Carlos Allende Prieto, Christopher J. Manser, Namitha Kizhuprakkat, Adam D. Myers, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Constance Rockosi, Monica Valluri, Joan Najita, Alis Deason, Anand Raichoor, M.-Y. Wang, Y.-S. Ting, Bokyoung Kim, Andreia Carrillo, Wenting Wang, Leandro Beraldo e Silva, Jiwon Jesse Han, Jiani Ding, Miguel Sánchez-Conde, Jessica N. Aguilar, Steven Ahlen, Stephen Bailey, Vasily Belokurov, David Brooks, Katia Cunha, Kyle Dawson, Axel de la Macorra, Peter Doel, Daniel J. Eisenstein, Parker Fagrelius, Kevin Fanning, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Julien Guy, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Michael E. Levi, Paul Martini, Aaron M. Meisner, Ramon Miquel, John Moustakas, Jundan J. D. Nie, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Nabeel Rehemtulla, Edward Schlafly, David Schlegel, Michael Schubnell, Ray M. Sharples, Gregory Tarlé, Risa H. Wechsler, David H. Weinberg, Zhimin Zhou, Hu Zou
Publikováno v:
The Astrophysical Journal, Vol 947, Iss 1, p 37 (2023)
We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak National Observatory. Over the next 5 yr DESI MWS will observe approximately seven millio
Externí odkaz:
https://doaj.org/article/114f8abfb25849edb4e48c0473273b33
Autor:
Naim Göksel Karaçaylı, Paul Martini, David H Weinberg, Vid Iršič, J Aguilar, S Ahlen, D Brooks, A de la Macorra, A Font-Ribera, S Gontcho A Gontcho, J Guy, T Kisner, R Miquel, C Poppett, C Ravoux, M Schubnell, G Tarlé, B A Weaver, Z Zhou
Publikováno v:
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2023, 522 (4), pp.5980-5995. ⟨10.1093/mnras/stad1363⟩
Mon.Not.Roy.Astron.Soc., 2023, 522 (4), pp.5980-5995. ⟨10.1093/mnras/stad1363⟩
The abundance, temperature, and clustering of metals in the intergalactic medium are important parameters for understanding their cosmic evolution and quantifying their impact on cosmological analysis with the Ly $\alpha$ forest. The properties of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed83817091fb757e772504a30abcf8f9
https://doi.org/10.1093/mnras/stad1363
https://doi.org/10.1093/mnras/stad1363
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 520:782-803
We derive empirical constraints on the nucleosynthetic yields of nitrogen by incorporating N enrichment into our previously developed and empirically tuned multi-zone galactic chemical evolution model. We adopt a metallicity-independent ("primary") N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba0ad4777e710e97919fd36abaaa5475
https://doi.org/10.1093/mnras/stad057
https://doi.org/10.1093/mnras/stad057