Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Georgiev, Leonid"'
Autor:
Huang, Kuiyun, Urata, Yuji, Takahashi, Satoko, Im, Myungshin, Yu, Po-Chieh, Choi, Changes, Butler, Nathaniel, Watson, Alan M., Kutyrev, Alexander, Lee, William H., Klein, Chris, Fox, Ori D., Littlejohns, Owen, Cucchiara, Nino, Troja, Eleonora, González, Jesús, Richer, Michael G., Román-Zúñiga, Carlos, Bloom, Josh, Prochaska, J. Xavier, Gehrels, Neil, Moseley, Harvey, Georgiev, Leonid, de Diego, José A., Ruiz, Enrico Ramirez
We report on the first open-use based Atacama Large Millimeter/submm Array (ALMA) 345-GHz observation for the late afterglow phase of GRB131030A. The ALMA observation constrained a deep limit at 17.1 d for the afterglow and host galaxy. We also ident
Externí odkaz:
http://arxiv.org/abs/1612.06481
Autor:
Cenko, S. Bradley, Urban, Alex L., Perley, Daniel A., Horesh, Assaf, Corsi, Alessandra, Fox, Derek B., Cao, Yi, Kasliwal, Mansi M., Lien, Amy, Arcavi, Iair, Bloom, Joshua S., Butler, Nat R., Cucchiara, Antonino, de Diego, Jose A., Filippenko, Alexei V., Gal-Yam, Avishay, Gehrels, Neil, Georgiev, Leonid, Gonzalez, J. Jesus, Graham, John F., Greiner, Jochen, Kann, D. Alexander, Klein, Christopher R., Knust, Fabian, Kulkarni, S. R., Kutyrev, Alexander, Laher, Russ, Lee, William H., Nugent, Peter E., Prochaska, J. Xavier, Ramirez-Ruiz, Enrico, Richer, Michael G., Rubin, Adam, Urata, Yuji, Varela, Karla, Watson, Alan M., Wozniak, Przemek R.
We report here the discovery by the Intermediate Palomar Transient Factory (iPTF) of iPTF14yb, a luminous ($M_{r}\approx-27.8$ mag), cosmological (redshift 1.9733), rapidly fading optical transient. We demonstrate, based on probabilistic arguments an
Externí odkaz:
http://arxiv.org/abs/1504.00673
Autor:
Zhekov, Svetozar A., Tomov, Toma, Gawronski, Marcin P., Georgiev, Leonid N., Borissova, Jura, Kurtev, Radostin, Gagne, Marc, Hajduk, Marcin
We present results from the first attempts to derive various physical characteristics of the dusty Wolf-Rayet star WR 48a based on a multi-wavelength view of its observational properties. This is done on the basis of new optical and near-infrared spe
Externí odkaz:
http://arxiv.org/abs/1409.2684
We present spatially- and velocity-resolved echelle spectroscopy for NGC 7009 obtained with the UVES spectrograph at the European Southern Observatory's Very Large Telescope. Our objective is to analyze the kinematics of emission lines excited by rec
Externí odkaz:
http://arxiv.org/abs/1306.6110
Autor:
Georgiev, Leonid N, Koenigsberger, Gloria, Hillier, D John, Morrell, Nidia, Barba, Rodolfo, Gamen, Roberto
Over the past 40 years, the massive LBV/WR system HD 5980 in the Small Magellanic Cloud has undergone a long-term S Doradus type variability cycle and two brief and violent eruptions in 1993 and 1994. In this paper we analyze a collection of UV and o
Externí odkaz:
http://arxiv.org/abs/1109.5942
Autor:
Bloom, Joshua S., Prochaska, J. Xavier, Lee, William, González, J. Jesús, Ramírez-Ruiz, Enrico, Bolte, Michael, Franco, José, Guichard, José, Carramiñana, Alberto, Strittmatter, Peter, Avila-Reese, Vladimir, Bernstein, Rebecca, Bigelow, Bruce, Brodwin, Mark, Burgasser, Adam, Butler, Nat, Chávez, Miguel, Cobb, Bethany, Cook, Kem, Cruz-González, Irene, de Diego, José Antonio, Farah, Alejandro, Georgiev, Leonid, Girard, Julien, Hernández-Toledo, Hector, Jiménez-Bailón, Elena, Krongold, Yair, Mayya, Divakara, Meza, Juan, Miyaji, Takamitsu, Mújica, Raúl, Nugent, Peter, Porras, Alicia, Poznanski, Dovi, Raga, Alejandro, Richer, Michael, Rodríguez, Lino, Rosa, Daniel, Stanford, Adam, Szentgyorgyi, Andrew, Tenorio-Tagle, Guillermo, Thomas, Rollin, Valenzuela, Octavio, Watson, Alan M., Wehinger, Peter
We are proposing to conduct a multicolor, synoptic infrared (IR) imaging survey of the Northern sky with a new, dedicated 6.5-meter telescope at San Pedro M\'artir (SPM) Observatory. This initiative is being developed in partnership with astronomy in
Externí odkaz:
http://arxiv.org/abs/0905.1965
Autor:
Walkowicz, Lucianne M., Becker, Andrew C., Anderson, Scott F., Bloom, Joshua S., Georgiev, Leonid, Grindlay, Josh, Long, Knox, Mukadam, Anjum, Prsa, Andrej, Pepper, Joshua, Rau, Arne, Sesar, Branimir, Silvestri, Nicole, Smith, Nathan, Stassun, Keivan, Szkody, Paula
The next decade of survey astronomy has the potential to transform our knowledge of variable stars. Stellar variability underpins our knowledge of the cosmological distance ladder, and provides direct tests of stellar formation and evolution theory.
Externí odkaz:
http://arxiv.org/abs/0902.3981
Publikováno v:
Astrophys.J.639:185-193,2006
We have searched for the emission from \fex and \fexiv that is expected from the gas emitting in diffuse X-rays in \bd, NGC 6543, NGC 7009, and NGC 7027. Neither line was detected in any object. Models that fit the X-ray spectra of these objects indi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511681
Autor:
Koenigsberger, Gloria, Canalizo, Gabriela, Arrieta, Anabel, Richer, Michael G., Georgiev, Leonid
We present high resolution spectroscopic observations of the massive X-ray binary system LS I+65 010=2S 0114+650 in the optical wavelength region. A correlation between equivalent width and radial velocity of photospheric absorption lines is found. T
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211554
Autor:
Valdez-Gutierrez, Margarita, Rosado, Margarita, Puerari, Ivanio, Georgiev, Leonid, Borissova, Jordanka, Ambrocio-Cruz, Patricia
A detailed kinematic analysis of ionized gas in the nearby irregular galaxy NGC 4449 is presented. Observations are conducted in the spectral lines of Halpha and [SII]. Our scanning Fabry--Perot interferometric observations are presented from both a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0208338