Zobrazeno 1 - 10
of 221
pro vyhledávání: '"Ilyin, Ilya"'
Autor:
Shields, Joseph C., Chu, Jason, Conrad, Albert, Crass, Jonathan, Crepp, Justin R., Ertel, Steve, Farinato, Jacopo, Ilyin, Ilya, Kuhn, Olga, Marafatto, Luca, Pedichini, Fernando, Piazzesi, Roberto, Pogge, Richard W., Power, Jennifer, Ragland, Sam, Reynolds, Robert, Riedl, James, Smithwright, Mark, Strassmeier, Klaus G., Thompson, David
The Large Binocular Telescope, with its expansive collecting area, angular resolving power, and advanced optical design, provides a robust platform for development and operation of advanced instrumentation for astronomical research. The LBT currently
Externí odkaz:
http://arxiv.org/abs/2407.10871
Autor:
Petz, Sydney, Johnson, Marshall C., Asnodkar, Anusha Pai, Duck, Alison, Wang, Ji, Ilyin, Ilya, Strassmeier, Klaus G.
We present high-resolution optical emission spectroscopy observations of the ultra hot Jupiters (UHJs) TOI-1431 b and TOI-1518 b using the PEPSI spectrograph on the LBT. We detect emission lines from Fe I with a significance of 5.40$\sigma$ and 7.85$
Externí odkaz:
http://arxiv.org/abs/2407.09643
Autor:
Phillips, Caprice L., Faherty, Jacqueline K., Burningham, Ben, Vos, Johanna M., Gonzales, Eileen, Griffith, Emily J., Merchan, Sherelyn Alejandro, Calamari, Emily, Visscher, Channon, Morley, Caroline V., Whiteford, Niall, Gaarn, Josefine, Ilyin, Ilya, Strassmeier, Klaus
We present an atmospheric retrieval analysis on a set of young, cloudy, red L-dwarfs -- CWISER J124332.12+600126.2 and WISEP J004701.06+680352.1 -- using the \textit{Brewster} retrieval framework. We also present the first elemental abundance measure
Externí odkaz:
http://arxiv.org/abs/2407.01694
Autor:
Sutlieff, Ben J., Birkby, Jayne L., Stone, Jordan M., Derkink, Annelotte, Backs, Frank, Doelman, David S., Kenworthy, Matthew A., Bohn, Alexander J., Ertel, Steve, Snik, Frans, Woodward, Charles E., Ilyin, Ilya, Skemer, Andrew J., Leisenring, Jarron M., Strassmeier, Klaus G., Wang, Ji, Charbonneau, David, Biller, Beth A.
The time variability and spectra of directly imaged companions provide insight into their physical properties and atmospheric dynamics. We present follow-up R~40 spectrophotometric monitoring of red companion HD 1160 B at 2.8-4.2 $\mu$m using the dou
Externí odkaz:
http://arxiv.org/abs/2405.12271
Autor:
El-Badry, Kareem, Rix, Hans-Walter, Latham, David W., Shahaf, Sahar, Mazeh, Tsevi, Bieryla, Allyson, Buchhave, Lars A., Andrae, René, Yamaguchi, Natsuko, Isaacson, Howard, Howard, Andrew W., Savino, Alessandro, Ilyin, Ilya V.
We report discovery and spectroscopic follow-up of 21 astrometric binaries containing solar-type stars and dark companions with masses near 1.4 $M_{\odot}$. The simplest interpretation is that the companions are dormant neutron stars (NSs), though ul
Externí odkaz:
http://arxiv.org/abs/2405.00089
The magnetic field in the O9.7 V star HD54879 has been monitored for almost a decade. Spectropolarimetric observations reveal a rather strong mean longitudinal magnetic field that varies with a period of about 7.41 yr. Observations in the H$\alpha$ l
Externí odkaz:
http://arxiv.org/abs/2402.11244
Autor:
El-Badry, Kareem, Simon, Joshua D., Reggiani, Henrique, Rix, Hans-Walter, Latham, David W., Bieryla, Allyson, Buchhave, Lars A., Shahaf, Sahar, Mazeh, Tsevi, Chakrabarti, Sukanya, Guhathakurta, Puragra, Ilyin, Ilya V., Tauris, Thomas M.
We report discovery and characterization of a main-sequence G star orbiting a dark object with mass $1.90\pm 0.04 M_{\odot}$. The system was discovered via Gaia astrometry and has an orbital period of 731 days. We obtained multi-epoch RV follow-up ov
Externí odkaz:
http://arxiv.org/abs/2402.06722
Autor:
Metcalfe, Travis S., Strassmeier, Klaus G., Ilyin, Ilya V., Buzasi, Derek, Kochukhov, Oleg, Ayres, Thomas R., Basu, Sarbani, Chontos, Ashley, Finley, Adam J., See, Victor, Stassun, Keivan G., van Saders, Jennifer L., Sepulveda, Aldo G., Ricker, George R.
Publikováno v:
Astrophys. J. 960, L6 (2024)
The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum. However, the 50 year time ser
Externí odkaz:
http://arxiv.org/abs/2401.01944
Autor:
Metcalfe, Travis S., Buzasi, Derek, Huber, Daniel, Pinsonneault, Marc H., van Saders, Jennifer L., Ayres, Thomas R., Basu, Sarbani, Drake, Jeremy J., Egeland, Ricky, Kochukhov, Oleg, Petit, Pascal, Saar, Steven H., See, Victor, Stassun, Keivan G., Li, Yaguang, Bedding, Timothy R., Breton, Sylvain N., Finley, Adam J., Garcia, Rafael A., Kjeldsen, Hans, Nielsen, Martin B., Ong, J. M. Joel, Rorsted, Jakob L., Stokholm, Amalie, Winther, Mark L., Clark, Catherine A., Godoy-Rivera, Diego, Ilyin, Ilya V., Strassmeier, Klaus G., Jeffers, Sandra V., Marsden, Stephen C., Vidotto, Aline A., Baliunas, Sallie, Soon, Willie
Publikováno v:
Astron. J. 166, 167 (2023)
The bright star $\lambda$ Ser hosts a hot Neptune with a minimum mass of 13.6 $M_\oplus$ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun. W
Externí odkaz:
http://arxiv.org/abs/2308.09808
Autor:
Bostroem, K. Azalee, Pearson, Jeniveve, Shrestha, Manisha, Sand, David J., Valenti, Stefano, Jha, Saurabh W., Andrews, Jennifer E., Smith, Nathan, Terreran, Giacomo, Green, Elizabeth, Dong, Yize, Lundquist, Michael, Haislip, Joshua, Hoang, Emily T., Hosseinzadeh, Griffin, Janzen, Daryl, Jencson, Jacob E., Kouprianov, Vladimir, Paraskeva, Emmy, Retamal, Nicolas E. Meza, Reichart, Daniel E., Arcavi, Iair, Bonanos, Alceste Z., Coughlin, Michael W., Dobson, Ross, Farah, Joseph, Albany, Lluís, Gutiérrez, Claudia, Hawley, Suzanne, Hebb, Leslie, Hiramatsu, Daichi, Howell, D. Andrew, Iijima, Takashi, Ilyin, Ilya, Jhass, Kiran, McCully, Curtis, Moran, Sean, Morris, Brett M., Mura, Alessandra C., Müller-Bravo, Tomás, Munday, James, Newsome, Megan, Pabst, Maria Th., Ochner, Paolo, Gonzalez, Estefania Padilla, Pastorello, Andrea, Pellegrino, Craig, Piscarreta, Lara, Ravi, Aravind P., Reguitti, Andrea, Salo, Laura, Vinko, Jozsef, de Vos, Kellie, Wheeler, J. C., Williams, G. Grant, Wyatt, Samuel
Publikováno v:
The Astrophysical Journal Letters, Volume 956, Issue 1, id.L5, 17 pp., Oct 2023
We present the optical spectroscopic evolution of SN~2023ixf seen in sub-night cadence spectra from 1.18 to 14 days after explosion. We identify high-ionization emission features, signatures of interaction with material surrounding the progenitor sta
Externí odkaz:
http://arxiv.org/abs/2306.10119