Asteroseismology of the Nearby K Dwarf σ Draconis Using the Keck Planet Finder and TESS

Autor: Marc Hon, Daniel Huber, Yaguang Li, Travis S. Metcalfe, Timothy R. Bedding, Joel Ong, Ashley Chontos, Ryan Rubenzahl, Samuel Halverson, Rafael A. García, Hans Kjeldsen, Dennis Stello, Daniel R. Hey, Tiago Campante, Andrew W. Howard, Steven R. Gibson, Kodi Rider, Arpita Roy, Ashley D. Baker, Jerry Edelstein, Chris Smith, Benjamin J. Fulton, Josh Walawender, Max Brodheim, Matt Brown, Dwight Chan, Fei Dai, William Deich, Colby Gottschalk, Jason Grillo, Dave Hale, Grant M. Hill, Bradford Holden, Aaron Householder, Howard Isaacson, Yuzo Ishikawa, Sharon R. Jelinsky, Marc Kassis, Stephen Kaye, Russ Laher, Kyle Lanclos, Chien-Hsiu Lee, Scott Lilley, Ben McCarney, Timothy N. Miller, Joel Payne, Erik A. Petigura, Claire Poppett, Michael Raffanti, Constance Rockosi, Dale Sanford, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Roger Smith, Jim Thorne, John Valliant, Adam Vandenberg, Shin Ywan Wang, Edward Wishnow, Truman Wold, Sherry Yeh, Ashley Baker, Sarbani Basu, Megan Bedell, Heather M. Cegla, Ian Crossfield, Courtney Dressing, Xavier Dumusque, Heather Knutson, Dimitri Mawet, John O’Meara, Guđmundur Stefánsson, Johanna Teske, Gautam Vasisht, Sharon Xuesong Wang, Lauren M. Weiss, Joshua N. Winn, Jason T. Wright

Publikováno v: The Astrophysical Journal, Vol 975, Iss 1, p 147 (2024)

Asteroseismology of dwarf stars cooler than the Sun is very challenging owing to the low amplitudes and rapid timescales of oscillations. Here we present the asteroseismic detection of solar-like oscillations at 4-minute timescales ( ${\nu }_{\max }\

Externí odkaz: https://doaj.org/article/0036e169dbce4f8e89dc43015f8a3fcb

GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI

Autor: Carlos Allende Prieto, David S. Aguado, Jonay I. González Hernández, Rafael Rebolo, Joan Najita, Christopher J. Manser, Constance Rockosi, Zachary Slepian, Mar Mezcua, Monica Valluri, Rana Ezzeddine, Sergey E. Koposov, Andrew P. Cooper, Arjun Dey, Boris T. Gänsicke, Ting S. Li, Katia Cunha, Siwei Zou, Jessica Nicole Aguilar, Steven Ahlen, David Brooks, Todd Claybaugh, Shaun Cole, Sarah Eftekharzadeh, Kevin Fanning, Jaime Forero-Romero, Satya Gontcho A Gontcho, Klaus Honscheid, Pascale Jablonka, Robert Kehoe, Theodore Kisner, Martin Landriau, Axel de la Macorra, Aaron Meisner, Ramón Miquel, John Moustakas, Jundan Nie, Claire Poppett, Francisco Prada, Mehdi Rezaie, Graziano Rossi, Eusebio Sánchez, Michael Schubnell, Ray Sharples, Malgorzata Siudek, Verne V. Smith, Gregory Tarlé, Fiorenzo Vincenzo, Benjamin Alan Weaver, Zhimin Zhou, Hu Zou

Publikováno v: The Astrophysical Journal, Vol 957, Iss 2, p 76 (2023)

The observations from the Dark Energy Spectroscopic Instrument (DESI) will significantly increase the numbers of known extremely metal-poor stars by a factor of ∼10, improving the sample statistics to study the early chemical evolution of the Milky

Externí odkaz: https://doaj.org/article/f8ae4b04a7394e6fa3dcda873efa51aa

Innovations and advances in instrumentation at the W. M. Keck Observatory, vol. II

Autor: Marc . Kassis, Steve Allen, Carlos Alvarez, Ravinder Banyal, Robert Bertz, Charles Beichman, Aaron Brown, Matthew Brown, Gerald Cabak, Kevin Bundy, Sylvain Cetre, Jason Chin, Mark Chun, Will Deich, Richard Dekany, Jacques-Robert Delorme, Mark Devenot, Greg Doppmann, Michael P. Fitzgerald, Jason R. Fucik, Grant Hill, Philip . Hinz, Bradford P. Holden, Andrew W. Howard, Maodong Gao, Steve Gibson, Percy Gomez, Colby Gottschalk, Peter R. Gillingham, Tucker Jones, Nemanja Jovanovic, Evan Kirby, Quinn Konopacky, Shanti Krishnan, Renate Kupke, James E. Larkin, Stephanie D. Leifer, Hilton A. Lewis, Scott Lilley, Jessica Lu, James E. Lyke, Nicholas MacDonald, Eduardo Marin, Matt Matuszewski, Dimitri Mawet, Rosalie McGurk, Maxwell A. Millar-Blanchaer, Reston . Nash, Craig Nance, James D. Neill, John M. O'Meara, Eliad Peretz, Claire . Poppett, John C. Mather, Matthew V. Radovan, Mitsuko K. Roberts, Sam Ragland, Kodi Rider, Constance . Rockosi, Dale Sandfor, Boqiang Shen, Charles C. Steidel, Sunil Simha, Andy Skemer, Richard Stelter, Avinash Surendran, James Thorne, Ben McCarney, Kyle Lanclos, Ashley Baker, Ryan Rubenzahl, Arpita Roy, Sam Halverson, Jerry Edelstein, Christopher Martin, Maureen Savage, Dale Sandford, Stephanie Sallum, Josh Walawender, Peter Wizinowich, Kyle B. Westfall, Kerry J. Vahala, Shelley A. Wright, Truman Wold, Sherry Yeh

Publikováno v: Ground-based and Airborne Instrumentation for Astronomy IX.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::65328af3f1273f3342b2c41178afe082
https://doi.org/10.1117/12.2628630

Higher Order Moments of the Angular Distribution of Galaxies from Early Sloan Digital Sky Survey Data

Autor: Istvan Szapudi, Joshua A. Frieman, Roman Scoccimarro, Alexander S. Szalay, Andrew J. Connolly, Scott Dodelson, Daniel J. Eisenstein, James E. Gunn, David Johnston, Stephen Kent, Jon Loveday, Avery Meiksin, Robert C. Nichol, Ryan Scranton, Albert Stebbins, Michael S. Vogeley, James Annis, Neta A. Bahcall, J. Brinkman, Istvan Csabai, Mamoru Doi, Masataka Fukugita, Željko Ivezić, Rita S. J. Kim, Gillian R. Knapp, Don Q. Lamb, Brian C. Lee, Robert H. Lupton, Timothy A. McKay, Jeff Munn, John Peoples, Jeff Pier, Constance Rockosi, David Schlegel, Christopher Stoughton, Douglas L. Tucker, Brian Yanny, Donald G. York

Publikováno v: The Astrophysical Journal. 570:75-85

– 3 –areas of bad seeing, contamination from bright stars, ghosts, and high galacticextinction masked out. This survey region, which forms part of the SDSS EarlyData Release, is the same as that for which two-point angular clustering statisticsha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::935d0702c1355a7b35771501697bab47
https://doi.org/10.1086/339574

SEGUE: A Spectroscopic Survey of 240,000 Stars with g = 14-20

Autor: Brian Yanny, Constance Rockosi, Heidi Jo Newberg, Gillian R. Knapp, Jennifer K. Adelman-McCarthy, Bonnie Alcorn, Sahar Allam, Carlos Allende Prieto, Deokkeun An, Kurt S. J. Anderson, Scott Anderson, Coryn A. L. Bailer-Jones, Steve Bastian, Timothy C. Beers, Eric Bell, Vasily Belokurov, Dmitry Bizyaev, Norm Blythe, John J. Bochanski, William N. Boroski, Jarle Brinchmann, J. Brinkmann, Howard Brewington, Larry Carey, Kyle M. Cudworth, Michael Evans, N. W. Evans, Evalyn Gates, B. T. Gänsicke, Bruce Gillespie, Gerald Gilmore, Ada Nebot Gomez-Moran, Eva K. Grebel, Jim Greenwell, James E. Gunn, Cathy Jordan, Wendell Jordan, Paul Harding, Hugh Harris, John S. Hendry, Diana Holder, Inese I. Ivans, Željko Ivezič, Sebastian Jester, Jennifer A. Johnson, Stephen M. Kent, Scot Kleinman, Alexei Kniazev, Jurek Krzesinski, Richard Kron, Nikolay Kuropatkin, Svetlana Lebedeva, Young Sun Lee, R. French Leger, Sébastien Lépine, Steve Levine, Huan Lin, Daniel C. Long, Craig Loomis, Robert Lupton, Olena Malanushenko, Viktor Malanushenko, Bruce Margon, David Martinez-Delgado, Peregrine McGehee, Dave Monet, Heather L. Morrison, Jeffrey A. Munn, Eric H. Neilsen, Atsuko Nitta, John E. Norris, Dan Oravetz, Russell Owen, Nikhil Padmanabhan, Kaike Pan, R. S. Peterson, Jeffrey R. Pier, Jared Platson, Paola Re Fiorentin, Gordon T. Richards, Hans-Walter Rix, David J. Schlegel, Donald P. Schneider, Matthias R. Schreiber, Axel Schwope, Valena Sibley, Audrey Simmons, Stephanie A. Snedden, J. Allyn Smith, Larry Stark, Fritz Stauffer, M. Steinmetz, C. Stoughton, Mark SubbaRao, Alex Szalay, Paula Szkody, Aniruddha R. Thakar, Sivarani Thirupathi, Douglas Tucker, Alan Uomoto, Dan Vanden Berk, Simon Vidrih, Yogesh Wadadekar, Shannon Watters, Ron Wilhelm, Rosemary F. G. Wyse, Jean Yarger, Dan Zucker

The SEGUE survey obtained 240,000 moderate resolution (R = 1800) spectra from 3900 - 9000 Angstroms of fainter Milky Way stars (14.0 < g < 20.3) of a wide variety of spectral types, both main sequence and evolved objects, with the goal of studying th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f093925bac57ceea7d133e7dda98f81
https://resolver.caltech.edu/CaltechAUTHORS:20100629-111735552