Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Martha L. Boyer"'
Autor:
Alessandro Savino, Mario Gennaro, Andrew E. Dolphin, Daniel R. Weisz, Matteo Correnti, Jay Anderson, Rachael Beaton, Martha L. Boyer, Roger E. Cohen, Andrew A. Cole, Meredith J. Durbin, Christopher T. Garling, Marla C. Geha, Karoline M. Gilbert, Jason Kalirai, Nitya Kallivayalil, Kristen B. W. McQuinn, Max J. B. Newman, Hannah Richstein, Evan D. Skillman, Jack T. Warfield, Benjamin F. Williams
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 36 (2024)
We empirically assess estimates from v3.0 of the James Webb Space Telescope NIRCam Exposure Time Calculator (ETC) using observations of resolved stars in Local Group targets taken as part of the Resolved Stellar Populations Early Release Science (ERS
Externí odkaz:
https://doaj.org/article/c1fa5c027ef745f9a76b3698b06f5c0e
Autor:
Alec S. Hirschauer, Nicolas Crouzet, Nolan Habel, Laura Lenkić, Conor Nally, Olivia C. Jones, Giacomo Bortolini, Martha L. Boyer, Kay Justtanont, Margaret Meixner, Göran Östlin, Gillian S. Wright, Ruyman Azzollini, Joris A. D. L. Blommaert, Bernhard Brandl, Leen Decin, Omnarayani Nayak, Pierre Royer, B. A. Sargent, Paul van der Werf
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 23 (2024)
We present a JWST imaging survey of I Zw 18, the archetypal extremely metal-poor, star-forming (SF), blue compact dwarf galaxy. With an oxygen abundance of only ∼3% Z _⊙ , it is among the lowest-metallicity systems known in the local Universe, an
Externí odkaz:
https://doaj.org/article/9e2728617aec4dfc8557fc0ee93a8fa7
Autor:
Laura Lenkić, Conor Nally, Olivia C. Jones, Martha L. Boyer, Patrick J. Kavanagh, Nolan Habel, Omnarayani Nayak, Alec S. Hirschauer, Margaret Meixner, B. A. Sargent, Tea Temim
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 2, p 110 (2024)
We present an imaging survey of the Spitzer I star-forming region in NGC 6822 conducted with the NIRCam and MIRI instruments on board JWST. Located at a distance of 490 kpc, NGC 6822 is the nearest non-interacting low-metallicity (∼0.2 Z _⊙ ) dwa
Externí odkaz:
https://doaj.org/article/b33c535cb4784c38aa6f8f20a90a5963
Autor:
Alberto D. Bolatto, Rebecca C. Levy, Elizabeth Tarantino, Martha L. Boyer, Deanne B. Fisher, Serena A. Cronin, Adam K. Leroy, Ralf S. Klessen, J. D. Smith, Danielle A. Berg, Torsten Böker, Leindert A. Boogaard, Eve C. Ostriker, Todd A. Thompson, Juergen Ott, Laura Lenkić, Laura A. Lopez, Daniel A. Dale, Sylvain Veilleux, Paul P. van der Werf, Simon C. O. Glover, Karin M. Sandstrom, Evan D. Skillman, John Chisholm, Vicente Villanueva, Thomas S.-Y. Lai, Sebastian Lopez, Elisabeth A. C. Mills, Kimberly L. Emig, Lee Armus, Divakara Mayya, David S. Meier, Ilse De Looze, Rodrigo Herrera-Camus, Fabian Walter, Mónica Relaño, Hannah B. Koziol, Joshua Marvil, María J. Jiménez-Donaire, Paul Martini
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 63 (2024)
We present new observations of the central 1 kpc of the M82 starburst obtained with the James Webb Space Telescope near-infrared camera instrument at a resolution θ ∼ 0.″05–0.″1 (∼1–2 pc). The data comprises images in three mostly contin
Externí odkaz:
https://doaj.org/article/e772c3ae8f9a4c4fa39015d2240c0ae2
Autor:
Max J. B. Newman, Kristen B. W. McQuinn, Evan D. Skillman, Martha L. Boyer, Roger E. Cohen, Andrew E. Dolphin, O. Grace Telford
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 175 (2024)
The tip of the red giant branch (TRGB) based distance method in the I band is one of the most efficient and precise techniques for measuring distances to nearby galaxies ( D ≲ 15 Mpc). The TRGB in the near-infrared (NIR) is 1–2 mag brighter relat
Externí odkaz:
https://doaj.org/article/74c79d4ba00b4c1ca73589348e8ce015
Autor:
Daniel R. Weisz, Andrew E. Dolphin, Alessandro Savino, Kristen B. W. McQuinn, Max J. B. Newman, Benjamin F. Williams, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Karin M. Sandstrom, Andrew A. Cole, Jack T. Warfield, Evan D. Skillman, Roger E. Cohen, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, Michael C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Leo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Erik J. Tollerud, Andrew Wetzel
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 271, Iss 2, p 47 (2024)
We present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including pixel masking, astrometric alignment, star finding, photometry, catalog creation, and artificial st
Externí odkaz:
https://doaj.org/article/c2942cef14c8474da98e78e9ba5f8bf7
Autor:
Kristen. B. W. McQuinn, Max J. B. Newman, Alessandro Savino, Andrew E. Dolphin, Daniel R. Weisz, Benjamin F. Williams, Martha L. Boyer, Roger E. Cohen, Matteo Correnti, Andrew A. Cole, Marla C. Geha, Mario Gennaro, Nitya Kallivayalil, Karin M. Sandstrom, Evan D. Skillman, Jay Anderson, Alberto Bolatto, Michael Boylan-Kolchin, Christopher T. Garling, Karoline M. Gilbert, Léo Girardi, Jason S. Kalirai, Alessandro Mazzi, Giada Pastorelli, Hannah Richstein, Jack T. Warfield
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 16 (2024)
We present the first star formation history (SFH) and age–metallicity relation (AMR) derived from resolved stellar populations imaged with the JWST NIRCam instrument. The target is the Local Group star-forming galaxy WLM at 970 kpc. The depth of th
Externí odkaz:
https://doaj.org/article/dfa91b9ef5ab4d4f8277954633ac7c7b
Autor:
Richard G. Arendt, Martha L. Boyer, Eli Dwek, Mikako Matsuura, Aravind P. Ravi, Armin Rest, Roger Chevalier, Phil Cigan, Ilse De Looze, Guido De Marchi, Claes Fransson, Christa Gall, R. D. Gehrz, Haley L. Gomez, Tuomas Kangas, Florian Kirchschlager, Robert P. Kirshner, Josefin Larsson, Peter Lundqvist, Dan Milisavljevic, Sangwook Park, Nathan Smith, Jason Spyromilio, Tea Temim, Lifan Wang, J. Craig Wheeler, Charles E. Woodward
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 95 (2023)
JWST Near Infrared Camera (NIRCam) observations at 1.5–4.5 μ m have provided broadband and narrowband imaging of the evolving remnant of SN 1987A with unparalleled sensitivity and spatial resolution. Comparing with previous marginally spatially re
Externí odkaz:
https://doaj.org/article/c1b4a2c811ad4c9293c3c0b2446249ad
Autor:
Steven R. Goldman, Martha L. Boyer, Julianne Dalcanton, Iain McDonald, Léo Girardi, Benjamin F. Williams, Sundar Srinivasan, Karl Gordon
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 2, p 71 (2023)
Externí odkaz:
https://doaj.org/article/c3f1342ff0794dcf946e6b6a0f5d052a
Autor:
Daniel R. Weisz, Kristen B. W. McQuinn, Alessandro Savino, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Andrew E. Dolphin, Karin M. Sandstrom, Andrew A. Cole, Benjamin F. Williams, Evan D. Skillman, Roger E. Cohen, Max J. B. Newman, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, M. C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Léo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason S. Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Judy Schmidt, Erik J. Tollerud, Jack T. Warfield, Andrew Wetzel
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 1, p 15 (2023)
We present the JWST Resolved Stellar Populations Early Release Science (ERS) program. We obtained 27.5 hr of NIRCam and NIRISS imaging of three targets in the Local Group (Milky Way globular cluster M92, ultrafaint dwarf galaxy Draco II , and star-fo
Externí odkaz:
https://doaj.org/article/748c5c85031c4e0f99d81f3deab03e3f