Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Swift, Brandon J."'
Autor:
Shivvers, Isaac, Filippenko, Alexei V., Silverman, Jeffrey M., Zheng, WeiKang, Foley, Ryan J., Chornock, Ryan, Barth, Aaron J., Cenko, S. Bradley, Clubb, Kelsey I., Fox, Ori D., Ganeshalingam, Mohan, Graham, Melissa L., Kelly, Patrick L., Kleiser, Io K. W., Leonard, Douglas C., Li, Weidong, Matheson, Thomas, Mauerhan, Jon C., Modjaz, Maryam, Serduke, Franklin J. D., Shields, Joseph C., Steele, Thea N., Swift, Brandon J., Wong, Diane S., Yuk, Heechan
We present the complete sample of stripped-envelope supernova (SN) spectra observed by the Lick Observatory Supernova Search (LOSS) collaboration over the last three decades: 888 spectra of 302 SNe, 652 published here for the first time, with 384 spe
Externí odkaz:
http://arxiv.org/abs/1810.03650
Autor:
Silverman, Jeffrey M., Foley, Ryan J., Filippenko, Alexei V., Ganeshalingam, Mohan, Barth, Aaron J., Chornock, Ryan, Griffith, Christopher V., Kong, Jason J., Lee, Nicholas, Leonard, Douglas C., Matheson, Thomas, Miller, Emily G., Steele, Thea N., Barris, Brian J., Bloom, Joshua S., Cobb, Bethany E., Coil, Alison L., Desroches, Louis-Benoit, Gates, Elinor L., Ho, Luis C., Jha, Saurabh W., Kandrashoff, Michael T., Li, Weidong, Mandel, Kaisey S., Modjaz, Maryam, Moore, Matthew R., Mostardi, Robin E., Papenkova, Marina S., Park, Sung, Perley, Daniel A., Poznanski, Dovi, Reuter, Cassie A., Scala, James, Serduke, Franklin J. D., Shields, Joseph C., Swift, Brandon J., Tonry, John L., Van Dyk, Schuyler D., Wang, Xiaofeng, Wong, Diane S.
In this first paper in a series we present 1298 low-redshift (z\leq0.2) optical spectra of 582 Type Ia supernovae (SNe Ia) observed from 1989 through 2008 as part of the Berkeley SN Ia Program (BSNIP). 584 spectra of 199 SNe Ia have well-calibrated l
Externí odkaz:
http://arxiv.org/abs/1202.2128
Autor:
Poznanski, Dovi, Butler, Nathaniel, Filippenko, Alexei V., Ganeshalingam, Mohan, Li, Weidong, Bloom, Joshua S., Chornock, Ryan, Foley, Ryan J., Nugent, Peter E., Silverman, Jeffrey M., Cenko, S. Bradley, Gates, Elinor L., Leonard, Douglas C., Miller, Adam A., Modjaz, Maryam, Serduke, Frank J. D., Smith, Nathan, Swift, Brandon J., Wong, Diane S.
Publikováno v:
Astrophys.J.694:1067-1079,2009
In the epoch of precise and accurate cosmology, cross-confirmation using a variety of cosmographic methods is paramount to circumvent systematic uncertainties. Owing to progenitor histories and explosion physics differing from those of Type Ia SNe (S
Externí odkaz:
http://arxiv.org/abs/0810.4923
Autor:
Burgasser, Adam J., Lepine, Sebastien, Lodieu, Nicolas, Scholz, Ralf-Dieter, Delorme, Phillippe, Jao, Wei-Chun, Swift, Brandon J., Cushing, Michael C.
Ultracool subdwarfs are low luminosity, late-type M and L dwarfs that exhibit spectroscopic indications of subsolar metallicity and halo kinematics. Their recent discovery and ongoing investigation have led to new insights into the role of metallicit
Externí odkaz:
http://arxiv.org/abs/0810.0569
Discovery of Two Nearby, Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Metal-Rich?
Autor:
Looper, Dagny L., Kirkpatrick, J. Davy, Cutri, Roc M., Barman, Travis, Burgasser, Adam J., Cushing, Michael C., Roellig, Thomas, McGovern, Mark R., McLean, Ian S., Rice, Emily, Swift, Brandon J., Schurr, Steven D.
Publikováno v:
2008ApJ...686.528L
We present the discovery of two nearby L dwarfs from our 2MASS proper motion search, which uses multi-epoch 2MASS observations covering ~4700 square degrees of sky. 2MASS J18212815+1414010 and 2MASS J21481628+4003593 were overlooked by earlier survey
Externí odkaz:
http://arxiv.org/abs/0806.1059
Autor:
Burgasser, Adam J., Looper, Dagny L., Kirkpatrick, J. Davy, Cruz, Kelle L., Swift, Brandon J.
Optical and near-infrared spectroscopy of the newly discovered peculiar L dwarf 2MASS J11263991-5003550 are presented. Folkes et al. identified this source as a high proper motion L9+/-1 dwarf based on its strong H2O absorption at 1.4 micron. We find
Externí odkaz:
http://arxiv.org/abs/0710.1123
Publikováno v:
2007ApJ...669L..97L
We report the discovery of a fifth candidate substellar system in the ~5-10 Myr TW Hydrae Association - DENIS J124514.1-442907. This object has a NIR spectrum remarkably similar to that of 2MASS J1139511-315921, a known TW Hydrae brown dwarf, with lo
Externí odkaz:
http://arxiv.org/abs/0709.3290
Autor:
Leonard, Douglas C., Filippenko, Alexei V., Ganeshalingam, Mohan, Serduke, Franklin J. D., Li, Weidong, Swift, Brandon J., Gal-Yam, Avishay, Foley, Ryan J., Fox, Derek B., Park, Sung, Hoffman, Jennifer L., Wong, Diane S.
An important and perhaps critical clue to the mechanism driving the explosion of massive stars as supernovae is provided by the accumulating evidence for asymmetry in the explosion. Indirect evidence comes from high pulsar velocities, associations of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603297
Autor:
Jha, Saurabh, Branch, David, Chornock, Ryan, Foley, Ryan J., Li, Weidong, Swift, Brandon J., Casebeer, Darrin, Filippenko, Alexei V.
Publikováno v:
Astron.J.132:189-196,2006
We present Keck optical spectra of SN 2002cx, the most peculiar known Type Ia supernova (SN Ia), taken 227 and 277 days past maximum light. Astonishingly, the spectra are not dominated by the forbidden emission lines of iron that are a hallmark of th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0602250
Autor:
Foley, Ryan J., Papenkova, Marina S., Swift, Brandon J., Filippenko, Alexei V., Li, Weidong, Mazzali, Paolo A., Chornock, Ryan, Leonard, Douglas C., Van Dyk, Schuyler D.
Publikováno v:
Publ.Astron.Soc.Pac.115:1220-1235,2003
We present optical photometric and spectral data of the peculiar Type Ic SN 2002ap. Photometric coverage includes UBVRI bands from 2002 January 30, the day after discovery, through 2002 December 12. There are 5 early-time spectra and 8 in the nebular
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307136