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WEAVE-StePS. A stellar population survey using WEAVE at WHT

ArXiv 2302.07366 (2023)

Authors:

A Iovino, BM Poggianti, A Mercurio, M Longhetti, M Bolzonella, G Busarello, M Gullieuszik, F LaBarbera, P Merluzzi, L Morelli, C Tortora, D Vergani, S Zibetti, CP Haines, L Costantin, FR Ditrani, L Pozzetti, J Angthopo, M Balcells, S Bardelli, CR Benn, M Bianconi, LP Cassarà, EM Corsini, O Cucciati, G Dalton, A Ferré-Mateu, M Fossati, A Gallazzi, R García-Benito, B Granett, RM González Delgado, A Ikhsanova, E Iodice, S Jin, JH Knapen, S McGee, A Moretti, DNA Murphy, L Peralta de Arriba, A Pizzella, P Sánchez-Blázquez, C Spiniello, M Talia, S Trager, A Vazdekis, B Vulcani
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TDCOSMO. XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy

(2023)

Authors:

Anowar J Shajib, Pritom Mozumdar, Geoff C-F Chen, Tommaso Treu, Michele Cappellari, Shawn Knabel, Sherry H Suyu, Vardha N Bennert, Joshua A Frieman, Dominique Sluse, Simon Birrer, Frederic Courbin, Christopher D Fassnacht, Lizvette Villafaña, Peter R Williams
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The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation

(2022)

Authors:

Shoko Jin, Scott C Trager, Gavin B Dalton, J Alfonso L Aguerri, JE Drew, Jesús Falcón-Barroso, Boris T Gänsicke, Vanessa Hill, Angela Iovino, Matthew M Pieri, Bianca M Poggianti, DJB Smith, Antonella Vallenari, Don Carlos Abrams, David S Aguado, Teresa Antoja, Alfonso Aragón-Salamanca, Yago Ascasibar, Carine Babusiaux, Marc Balcells, R Barrena, Giuseppina Battaglia, Vasily Belokurov, Thomas Bensby, Piercarlo Bonifacio, Angela Bragaglia, Esperanza Carrasco, Ricardo Carrera, Daniel J Cornwell, Lilian Domínguez-Palmero, Kenneth J Duncan, Benoit Famaey, Cecilia Fariña, Oscar A Gonzalez, Steve Guest, Nina A Hatch, Kelley M Hess, Matthew J Hoskin, Mike Irwin, Johan H Knapen, Sergey E Koposov, Ulrike Kuchner, Clotilde Laigle, Jim Lewis, Marcella Longhetti, Sara Lucatello, Jairo Méndez-Abreu, Amata Mercurio, Alireza Molaeinezhad, Maria Monguió, Sean Morrison, David NA Murphy, Luis Peralta de Arriba, Isabel Pérez, Ignasi Pérez-Ràfols, Sergio Picó, Roberto Raddi, Mercè Romero-Gómez, Frédéric Royer, Arnaud Siebert, George M Seabroke, Debopam Som, David Terrett, Guillaume Thomas, Roger Wesson, C Clare Worley, Emilio J Alfaro, Carlos Allende Prieto, Javier Alonso-Santiago, Nicholas J Amos, Richard P Ashley, Lola Balaguer-Núñez, Eduardo Balbinot, Michele Bellazzini, Chris R Benn, Sara R Berlanas, Edouard J Bernard, Philip Best, Daniela Bettoni, Andrea Bianco, Georgia Bishop, Michael Blomqvist, Corrado Boeche, Micol Bolzonella, Silvia Bonoli, Albert Bosma, Nikolay Britavskiy, Gianni Busarello, Elisabetta Caffau, Tristan Cantat-Gaudin, Alfred Castro-Ginard, Guilherme Couto, Juan Carbajo-Hijarrubia, David Carter, Laia Casamiquela, Ana M Conrado, Pablo Corcho-Caballero, Luca Costantin, Alis Deason, Abel de Burgos, Sabrina De Grandi, Paola Di Matteo, Jesús Domínguez-Gómez, Ricardo Dorda, Alyssa Drake, Rajeshwari Dutta, Denis Erkal, Sofia Feltzing, Anna Ferré-Mateu, Diane Feuillet, Francesca Figueras, Matteo Fossat, Elena Franciosin, Antonio Frasca, Michele Fumagalli, Anna Gallazzi, Rubén García-Benito, Nicola Gentile Fusillo, Marwan Gebran, James Gilbert, TM Gledhill, Rosa M González Delgado, Robert Greimel, Mario Giuseppe Guarcello, Jose Guerra, Marco Gullieuszik, Christopher P Haines, Martin J Hardcastle, Amy Harris, Misha Haywood, Amina Helmi, Nauzet Hernandez, Artemio Herrero, Sarah Hughes, Vid Irsic, Pascale Jablonka, Matt J Jarvis, Carme Jordi, Rohit Kondapally, Georges Kordopatis, Jens-Kristian Krogager, Francesco La Barbera, Man I Lam, Søren S Larsen, Bertrand Lemasle, Ian J Lewis, Emilie Lhomé, Karin Lind, Marcello Lodi, Alessia Longobardi, Ilaria Lonoce, Laura Magrin, Jesús Maíz Apellániz, Olivier Marchal, Amparo Marco, Nicolas F Martin, Tadafumi Matsuno, Sophie Maurogordato, Paola Merluzzi, Jordi Miralda-Escudé, Emilio Molinari, Giacomo Monari, Lorenzo Morelli, Christopher J Mottram, Tim Naylor, Ignacio Negueruela, Jose Oñorbe, Elena Pancino, Sébastien Peirani, Reynier F Peletier, Lucia Pozzetti, Monica Rainer, Pau Ramos, Shaun C Read, Elena Maria Rossi, Huub JA Röttgering, Jose Alberto Rubiño-Martín, Jose Sabater Montes, José San Juan, Nicoletta Sanna, Ellen Schallig, Ricardo P Schiavon, Mathias Schultheis, Paolo Serra, Timothy W Shimwell, Sergio Simón-Díaz, Russell J Smith, Rosanna Sordo, Daniele Sorini, Caroline Soubiran, Else Starkenburg, Iain A Steele, John Stott, Remko Stuik, Eline Tolstoy, Crescenzo Tortora, Maria Tsantaki, Mathieu Van der Swaelmen, Reinout J van Weeren, Daniela Vergani, Marc AW Verheijen, Kristiina Verro, Jorick S Vink, Miguel Vioque, C Jakob Walcher, Nicholas A Walton, Christopher Wegg, Anne-Marie Weijmans, Wendy L Williams, Andrew J Wilson, Nicholas J Wright, Theodora Xylakis-Dornbusch, Kris Youakim, Stefano Zibetti, Cristina Zurita
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Detecting life outside our solar system with a large high-contrast-imaging mission

Experimental Astronomy Springer Nature 54:2-3 (2022) 1237-1274

Authors:

Ignas AG Snellen, F Snik, M Kenworthy, S Albrecht, G Anglada-Escudé, I Baraffe, P Baudoz, W Benz, J-L Beuzit, B Biller, JL Birkby, A Boccaletti, R van Boekel, J de Boer, Matteo Brogi, L Buchhave, L Carone, M Claire, R Claudi, B-O Demory, J-M Désert, S Desidera, BS Gaudi, R Gratton, M Gillon, JL Grenfell, O Guyon, T Henning, S Hinkley, E Huby, M Janson, C Helling, K Heng, M Kasper, CU Keller, O Krause, L Kreidberg, N Madhusudhan, A-M Lagrange, R Launhardt, TM Lenton, M Lopez-Puertas, A-L Maire, N Mayne, V Meadows, B Mennesson, G Micela, Y Miguel, J Milli, M Min, E de Mooij, D Mouillet, M N’Diaye, V D’Orazi, E Palle, I Pagano, G Piotto, D Queloz, H Rauer, I Ribas, G Ruane, F Selsis, A Sozzetti, D Stam, CC Stark, A Vigan, Pieter de Visser
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SDSS-IV MaStar: [α/Fe] for the MaNGA Stellar Library from synthetic model spectra

Monthly Notices of the Royal Astronomical Society Oxford University Press 517:3 (2022) 4275-4290

Authors:

Lewis Hill, Daniel Thomas, Claudia Maraston, Renbin Yan, Daniel Lazarz, Yan-Ping Chen, Guy S Stringfellow, Michele Cappellari, Jon A Holtzman, Julie Imig, Dmitry Bizyaev, David R Law, Keivan G Stassun, Niv Drory

Abstract:

We calculate the α-enhancement ratio [α/Fe] for the Mapping Nearby Galaxies at APO (MaNGA) Stellar Library (MaStar) while also fitting for the fundamental atmospheric parameters effective temperature, surface gravity, and metallicity – Teff, log g, [Fe/H]. This approach builds upon a previous catalogue of stellar parameters, whereby only the fundamental atmospheric parameters are fit with solar-scaled models. Here, we use the same Markov Chain Monte Carlo method with the additional free parameter [α/Fe]. Using the full spectral fitting code pPXF, we are able to fit multiple lines sensitive to [α/Fe] for a more robust measurement. Quality flags based on the convergence of the sampler, errors in [α/Fe] and a cut in the χ2 of the model fit are used to clean the final catalogue, returning 17 214 spectra and values in the range of −0.25 < [α/Fe] < 0.48. Comparing our calculated [α/Fe] with literature values reveals a degeneracy in cool stars with log g ≥ ∼4; this comparison is then used to create an alternative and calibrated parameter set. We also plot the final catalogue in an [Fe/H] versus [α/Fe] diagram and recover the expected result of increasing [α/Fe] with decreasing [Fe/H] for Milky Way disc-halo stars. We apply our method to a subsample of spectra of uniform resolution and higher signal to noise that finds that our results are independent of this higher signal to noise. In the context of stellar population models, we are able to cover a parameter space for the creation of intermediate to old age models at solar-scaled [α/Fe], high [Fe/H] and enhanced [α/Fe], low [Fe/H].

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