Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Martinez-Vazquez, Clara"'
Autor:
D'Orazi, Valentina, Storm, Nicholas, Casey, Andrew R., Braga, Vittorio F., Zocchi, Alice, Bono, Giuseppe, Fabrizio, Michele, Sneden, Christopher, Massari, Davide, Giribaldi, Riano E., Bergemann, Maria, Campbell, Simon W., Casagrande, Luca, de Grijs, Richard, De Silva, Gayandhi, Lugaro, Maria, Zucker, Daniel B., Bragaglia, Angela, Feuillet, Diane, Fiorentino, Giuliana, Chaboyer, Brian, Dall'Ora, Massimo, Marengo, Massimo, Martínez-Vázquez, Clara E., Matsunaga, Noriyuki, Monelli, Matteo, Mullen, Joseph P., Nataf, David, Tantalo, Maria, Thevenin, Frederic, Vitello, Fabio R., Kudritzki, Rolf-Peter, Bland-Hawthorn, Joss, Buder, Sven, Freeman, Ken, Kos, Janez, Lewis, Geraint F., Lind, Karin, Martell, Sarah, Sharma, Sanjib, Stello, Dennis, Zwitter, Tomaž
Stellar mergers and accretion events have been crucial in shaping the evolution of the Milky Way (MW). These events have been dynamically identified and chemically characterised using red giants and main-sequence stars. RR Lyrae (RRL) variables can p
Externí odkaz:
http://arxiv.org/abs/2405.04580
Autor:
Medina, Gustavo E., Muñoz, Ricardo R., Carlin, Jeffrey L., Vivas, A. Katherina, Grebel, Eva K., Martínez-Vázquez, Clara E., Hansen, Camilla J.
In order to constrain the evolutionary history of the Milky Way, we hunt for faint RR Lyrae stars (RRLs) using Dark Energy Camera data from the High cadence Transient Survey (HiTS) and the Halo Outskirts With Variable Stars (HOWVAST) survey. We repor
Externí odkaz:
http://arxiv.org/abs/2402.14055
The possible existence of stellar halos in low-mass galaxies is being intensely discussed nowadays after some recent discoveries of stars located in the outskirts of dwarf galaxies of the Local Group. RR Lyrae stars can be used to identify the extent
Externí odkaz:
http://arxiv.org/abs/2312.07279
Autor:
Medina, Gustavo E., Hansen, Camilla J., Muñoz, Ricardo R., Grebel, Eva K., Vivas, A. Katherina, Carlin, Jeffrey L., Martínez-Vázquez, Clara E.
Publikováno v:
2023, MNRAS, 519, 5689
We report the spectroscopic analysis of 20 halo ab-type RR Lyrae stars with heliocentric distances between 15 and 165 kpc, conducted using medium-resolution spectra from the Magellan Inamori Kyocera Echelle (MIKE) spectrograph. We obtain the systemic
Externí odkaz:
http://arxiv.org/abs/2309.03271
Autor:
Shrestha, Manisha, Sand, David J., Alexander, Kate D., Bostroem, K. Azalee, Hosseinzadeh, Griffin, Pearson, Jeniveve, Aghakhanloo, Mojgan, Vinkó, József, Andrews, Jennifer E., Jencson, Jacob E., Lundquist, M. J., Wyatt, Samuel, Howell, D. Andrew, McCully, Curtis, Gonzalez, Estefania Padilla, Pellegrino, Craig, Terreran, Giacomo, Hiramatsu, Daichi, Newsome, Megan, Farah, Joseph, Jha, Saurabh W., Smith, Nathan, Wheeler, J. Craig, Martínez-Vázquez, Clara, Carballo-Bello, Julio A., Drlica-Wagner, Alex, James, David J., Mutlu-Pakdil, Burçin, Stringfellow, Guy S., Sakowska, Joanna D., Noël, Noelia E. D., Bom, Clécio R., Kuehn, Kyler
We present photometric and spectroscopic observations of the extraordinary gamma-ray burst (GRB) 221009A in search of an associated supernova. Some past GRBs have shown bumps in the optical light curve that coincide with the emergence of supernova sp
Externí odkaz:
http://arxiv.org/abs/2302.03829
Autor:
Mullen, Joseph P., Marengo, Massimo, Martínez-Vázquez, Clara E., Chaboyer, Brian, Bono, Giuseppe, Braga, Vittorio F., Dall'Ora, Massimo, D'Orazi, Valentina, Fabrizio, Michele, Monelli, Matteo, Thévenin, Frédéric
We present new empirical infrared Period-Luminosity-Metallicity (PLZ) and Period-Wesenheit-Metallicity (PWZ) relations for RR Lyrae based on the latest Gaia EDR3 parallaxes. The relations are provided in the WISE $W1$ and $W2$ bands, as well as in th
Externí odkaz:
http://arxiv.org/abs/2301.03777
Autor:
Simon, Joshua D., Brown, Thomas M., Mutlu-Pakdil, Burçin, Ji, Alexander P., Drlica-Wagner, Alex, Avila, Roberto J., Martínez-Vázquez, Clara E., Li, Ting S., Balbinot, Eduardo, Bechtol, Keith, Frebel, Anna, Geha, Marla, Hansen, Terese T., James, David J., Pace, Andrew B., Aguena, M., Alves, O., Andrade-Oliveira, F., Annis, J., Bacon, D., Bertin, E., Brooks, D., Burke, D. L., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Costanzi, M., da Costa, L. N., De Vicente, J., Desai, S., Doel, P., Everett, S., Ferrero, I., Frieman, J., García-Bellido, J., Gatti, M., Gerdes, D. W., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., Kuehn, K., Kuropatkin, N., Marshall, J. L., Mena-Fernández, J., Miquel, R., Palmese, A., Paz-Chinchón, F., Pereira, M. E. S., Pieres, A., Malagón, A. A. Plazas, Raveri, M., Rodriguez-Monroy, M., Sanchez, E., Santiago, B., Scarpine, V., Sevilla-Noarbe, I., Smith, M., Suchyta, E., Swanson, M. E. C., Tarle, G., To, C., Vincenzi, M., Weaverdyck, N., Wilkinson, R. D.
The ultra-faint dwarf galaxy Reticulum II (Ret II) exhibits a unique chemical evolution history, with 72 +10/-12% of its stars strongly enhanced in r-process elements. We present deep Hubble Space Telescope photometry of Ret II and analyze its star f
Externí odkaz:
http://arxiv.org/abs/2212.00810
Autor:
Graham, Melissa L., Knop, Robert A., Kennedy, Thomas, Nugent, Peter E., Bellm, Eric, Catelan, Márcio, Patel, Avi, Smotherman, Hayden, Soraisam, Monika, Stetzler, Steven, Aldoroty, Lauren N., Awbrey, Autumn, Baeza-Villagra, Karina, Bernardinelli, Pedro H., Bianco, Federica, Brout, Dillon, Clarke, Riley, Clarkson, William I., Collett, Thomas, Davenport, James R. A., Fu, Shenming, Gizis, John E., Heinze, Ari, Hu, Lei, Jha, Saurabh W., Jurić, Mario, Kalmbach, J. Bryce, Kim, Alex, Lee, Chien-Hsiu, Lidman, Chris, Magee, Mark, Martínez-Vázquez, Clara E., Matheson, Thomas, Narayan, Gautham, Palmese, Antonella, Phillips, Christopher A., Rabus, Markus, Rest, Armin, Rodríguez-Segovia, Nicolás, Street, Rachel, Vivas, A. Katherina, Wang, Lifan, Wolf, Nicholas, Yang, Jiawen
This paper presents a new optical imaging survey of four deep drilling fields (DDFs), two Galactic and two extragalactic, with the Dark Energy Camera (DECam) on the 4 meter Blanco telescope at the Cerro Tololo Inter-American Observatory (CTIO). Durin
Externí odkaz:
http://arxiv.org/abs/2211.09202
Autor:
Sheppard, Scott S., Tholen, David, Pokorny, Petr, Micheli, Marco, Dell'Antonio, Ian, Fu, Shenming, Trujillo, Chadwick, Beaton, Rachael, Carlsten, Scott, Drlica-Wagner, Alex, Martinez-Vazquez, Clara, Mau, Sidney, Santana-Ros, Toni, Santana-Silva, Luidhy, Sifo, Cristobal, Simha, Sunil, Thirouin, Audrey, Trilling, David, Vivas, A. Katherina, Zenteno, Alfredo
We are conducting a survey using twilight time on the Dark Energy Camera with the Blanco 4m telescope in Chile to look for objects interior to Earth's and Venus' orbits. To date we have discovered two rare Atira/Apohele asteroids, 2021 LJ4 and 2021 P
Externí odkaz:
http://arxiv.org/abs/2209.06245
Autor:
Mullen, Joseph P., Marengo, Massimo, Martínez-Vázquez, Clara E., Bono, Giuseppe, Braga, Vittorio F., Chaboyer, Brian, Crestani, Juliana, Dall'Ora, Massimo, Fabrizio, Michele, Fiorentino, Giuliana, Monelli, Matteo, Neeley, Jillian R., Stetson, Peter B., Thévenin, Frédéric
We present new period-$\phi_{31}$-[Fe/H] relations for first overtone RRL stars (RRc), calibrated over a broad range of metallicities ($-2.5 < \textrm{[Fe/H]}< 0.0$) utilizing the largest currently available set of Galactic halo field RRL with homoge
Externí odkaz:
http://arxiv.org/abs/2204.07627