Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Michel, Raúl."'
Autor:
Çakmak, Hikmet, Yontan, Talar, Bilir, Selçk, Banks, Timothy S., Michel, Raúl., Soydugan, Esin, Koç, Seliz, Erçay, Hülya
This study outlines a detailed investigation using CCD {\it UBV} and {\it Gaia} DR3 data sets of the two open clusters Ruprecht 1 (Rup-1) and Ruprecht 171 (Rup-171). Fundamental astrophysical parameters such as color excesses, photometric metalliciti
Externí odkaz:
http://arxiv.org/abs/2409.02298
Autor:
Wadhwa, Surjit S., Popowicz, Adam, Michel, Raul, Kostic, Petar, Vince, Oliver, Tothill, Nick F. H., De Horta, Ain Y., Filipovic, Miroslav D.
Low mass ratio contact binary systems are more likely to have unstable orbits and potentially merge. In addition, such systems exhibit characteristics such as starspots and high energy emissions (UV) suggestive of chromospheric and magnetic activity.
Externí odkaz:
http://arxiv.org/abs/2407.08365
We derive astrophysical parameters of the open cluster NGC 1513 by means of colour indices built with new $CCD\,UBV(RI)_{KC}$ photometry. Based on early-type members, the mean foreground reddening and total to selective extinction ratio are E(B-V)=0.
Externí odkaz:
http://arxiv.org/abs/2405.09918
Autor:
Villafaña, Lizvette, Williams, Peter R., Treu, Tommaso, Brewer, Brendon J., Barth, Aaron J., U, Vivian, Bennert, Vardha N., Guo, Hengxiao, Bentz, Misty C., Canalizo, Gabriela, Filippenko, Alexei V., Gates, Elinor, Joner, Michael D., Malkan, Matthew A., Woo, Jong-Hak, Abolfathi, Bela, Bohn, Thomas, Bostroem, K. Azalee, Brandel, Andrew, Brink, Thomas G., Channa, Sanyum, Cosens, Maren, Donohue, Edward, Halevi, Goni, Hood, Carol E., Horst, J. Chuck, de Kouchkovsky, Maxime, Kuhn, Benjamin, Leonard, Douglas C., Michel, Raul, Olaes, Melanie Kae B., Park, Daeseong, Runco, Jordan N., Sexton, Remington O., Shivvers, Isaac, Spencer, Chance L., Stahl, Benjamin E., Stegman, Samantha, Walsh, Jonelle L., Zheng, WeiKang
We combine our dynamical modeling black hole mass measurements from the Lick AGN Monitoring Project 2016 sample with measured cross-correlation time lags and line widths to recover individual scale factors, f, used in traditional reverberation mappin
Externí odkaz:
http://arxiv.org/abs/2304.06764
Autor:
Karataş, Yüksel, Çakmak, Hikmet, Oralhan, İnci Akkaya, Bonatto, Charles, Michel, Raúl, Netopil, Martin
We present a detailed study of NGC 6791, NGC 6811, NGC 6819 and NGC 6866, the four open clusters that are located in the Kepler prime field. We use new CCD UBV(RI)KC photometry, which was combined with Gaia EDR3 photometric/astrometric data, to deriv
Externí odkaz:
http://arxiv.org/abs/2302.09851
Autor:
Liu, Xin-Yi, Li, Kai, Michel, Raul, Gao, Xiang, Gao, Xing, Liu, Fei, Yin, Shi-Peng, Wang, Xi, Sun, Guo-You
Multi-band photometric observations of eleven totally eclipsing contact binaries were carried out. Applying the Wilson-Devinney program, photometric solutions were obtained. There are two W-subtype systems, which are CRTS J133031.1+161202 and CRTS J1
Externí odkaz:
http://arxiv.org/abs/2301.02471
Autor:
Villafaña, Lizvette, Williams, Peter R., Treu, Tommaso, Brewer, Brendon J., Barth, Aaron J., U, Vivian, Bennert, Vardha N., Vogler, H. Alexander, Guo, Hengxiao, Bentz, Misty C., Canalizo, Gabriela, Filippenko, Alexei V., Gates, Elinor, Hamann, Frederick, Joner, Michael D., Malkan, Matthew A., Woo, Jong-Hak, Abolfathi, Bela, Abramson, L. E., Armen, Stephen F., Bae, Hyun-Jin, Bohn, Thomas, Boizelle, Benjamin D., Bostroem, Azalee, Brandel, Andrew, Brink, Thomas G., Channa, Sanyum, Cooper, M. C., Cosens, Maren, Donohue, Edward, Fillingham, Sean P., Gonzalez-Buitrago, Diego, Halevi, Goni, Halle, Andrew, Hood, Carol E., Horne, Keith, Horst, J. Chuck, de Kouchkovsky, Maxime, Kuhn, Benjamin, Kumar, Sahana, Leonard, Douglas C., Loveland, Donald, Manzano-King, Christina, McHardy, Ian, Michel, Raul, Olaes, Melanie Kae B., Park, Daeseong, Park, Songyoun, Pei, Liuyi, Ross, Timothy W., Runco, Jordan N., Samuel, Jenna, Sanchez, Javier, Scott, Bryan, Sexton, Remington O., Shin, Jaejin, Shivvers, Isaac, Spencer, Chance L., Stahl, Benjamin E., Stegman, Samantha, Stomberg, Isak, Valenti, Stefano, Walsh, Jonelle L., Yuk, Heechan, Zheng, WeiKang
We have modeled the velocity-resolved reverberation response of the H\b{eta} broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitioring Project 2016 sample, drawing inferences on the geometry and structure
Externí odkaz:
http://arxiv.org/abs/2203.15000
Autor:
Castro, Angel, Michel, Raúl, Castro Segura, Noel, Altamirano, Diego, Tejada, Carlos, Herrera, Joel, Colorado, Enrique, Sierra, Gerardo, Altamirano-Dévora, Liliana, Echevarría, Juan, Sloot, Rasjied, Wijnands, Rudy, Zavala, Iván, Rojas, David, Hernández Santisteban, Juan V., Vincentelli, Federico, Hernández-Landa, Javier A., Wang, Song, Fuentes, Melissa, Gandhi, Poshak, Silva-Cabrera, José S., Ramírez Vélez, Julio, García, Benjamín, Guisa, Gerardo, Gómez Maqueo Chew, Yilen, Montalvo, Felipe, Valenzuela, Francisco
Publikováno v:
In New Astronomy November 2024 112
Autor:
U, Vivian, Barth, Aaron J., Vogler, H. Alexander, Guo, Hengxiao, Treu, Tommaso, Bennert, Vardha N., Canalizo, Gabriela, Filippenko, Alexei V., Gates, Elinor, Hamann, Frederick, Joner, Michael D., Malkan, Matthew A., Pancoast, Anna, Williams, Peter R., Woo, Jong-Hak, Abolfathi, Bela, Abramson, L. E., Armen, Stephen F., Bae, Hyun-Jin, Bohn, Thomas, Boizelle, Benjamin D., Bostroem, Azalee, Brandel, Andrew, Brink, Thomas G., Channa, Sanyum, Cooper, M. C., Cosens, Maren, Donohue, Edward, Fillingham, Sean P., González-Buitrago, Diego, Halevi, Goni, Halle, Andrew, Hood, Carol E., Horne, Keith, Horst, J. Chuck, de Kouchkovsky, Maxime, Kuhn, Benjamin, Kumar, Sahana, Leonard, Douglas C., Loveland, Donald, Manzano-King, Christina, McHardy, Ian, Michel, Raúl, Olaes, Melanie Kae B., Park, Daeseong, Park, Songyoun, Pei, Liuyi, Ross, Timothy W., Runco, Jordan N., Samuel, Jenna, Sánchez, Javier, Scott, Bryan, Sexton, Remington O., Shin, Jaejin, Shivvers, Isaac, Spencer, Chance L., Stahl, Benjamin E., Stegman, Samantha, Stomberg, Isak, Valenti, Stefano, Villafaña, L., Walsh, Jonelle L., Yuk, Heechan, Zheng, WeiKang
We carried out spectroscopic monitoring of 21 low-redshift Seyfert 1 galaxies using the Kast double spectrograph on the 3-m Shane telescope at Lick Observatory from April 2016 to May 2017. Targeting active galactic nuclei (AGN) with luminosities of {
Externí odkaz:
http://arxiv.org/abs/2111.14849
During the last years and decades several individual studies and large-scale spectroscopic surveys significantly improved our knowledge of the Galactic metallicity distribution based on open clusters. The availability of Gaia data provided a further
Externí odkaz:
http://arxiv.org/abs/2110.11893