Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Vallely, Patrick J."'
Autor:
Yuk, Heechan, Dai, Xinyu, Jayasinghe, T., Vallely, Patrick J., Kochanek, Christopher S., Shappee, Benjamin J., Stanek, K. Z.
We analyze the optical power spectral density (PSD) for 22 active galactic nuclei (AGN) with measured X-ray PSDs using light curves from the All-Sky Automated Survey for SuperNovae (ASAS-SN) and the Transiting Exoplanet Survey Satellite (TESS). The j
Externí odkaz:
http://arxiv.org/abs/2306.17334
Autor:
Olivier, Grace M., Lopez, Laura A., Auchettl, Katie, Rosen, Anna L., Batta, Aldo, Neugent, Kathryn F., Ramirez-Ruiz, Enrico, Jayasinghe, Tharindu, Vallely, Patrick J., Rowan, Dominick M.
WR 20a is the most massive close-in binary known in our Galaxy. It is composed of two $\approx$80 M$_\odot$ Wolf-Rayet stars with a short period of $\approx$3.7 days in the open cluster Westerlund 2. As such, WR 20a presents us with a unique laborato
Externí odkaz:
http://arxiv.org/abs/2212.02514
Autor:
Treiber, Helena P., Hinkle, Jason T., Fausnaugh, Michael M., Shappee, Benjamin J., Kochanek, Christopher S., Vallely, Patrick J., Auchettl, Katie, Holoien, Thomas W. S., Payne, Anna V., Dai, Xinyu
We used Transiting Exoplanet Survey Satellite (TESS) data to identify 29 candidate active galactic nuclei (AGNs) through their optical variability. The high-cadence, high-precision TESS light curves present a unique opportunity for the identification
Externí odkaz:
http://arxiv.org/abs/2209.15019
Autor:
Holoien, Thomas W. -S., Berger, Vera L., Hinkle, Jason T., Galbany, L., Strom, Allison L., Vallely, Patrick J., Anderson, Joseph P., Boutsia, Konstantina, French, K. D., Kochanek, Christopher S., Kuncarayakti, Hanindyo, Lyman, Joseph D., Morrell, Nidia, Prieto, Jose L., Sánchez, Sebastián F., Stanek, K. Z., Walth, Gregory L.
We present a spectroscopic analysis of 44 low-luminosity host galaxies of Type Ia supernovae (SNe Ia) detected by the All-Sky Automated Survey for Supernovae (ASAS-SN), using the emission lines to measure metallicities and star formation rates. We fi
Externí odkaz:
http://arxiv.org/abs/2207.07657
Autor:
Payne, Anna V., Auchettl, Katie, Shappee, Benjamin J., Kochanek, Christopher S., Boyd, Patricia T., Holoien, Thomas W. -S., Fausnaugh, Michael M., Ashall, Chris, Hinkle, Jason T., Vallely, Patrick J., Stanek, K. Z., Thompson, Todd A.
ASASSN-14ko is a nuclear transient at the center of the AGN ESO 253-G003 that undergoes periodic flares. Optical flares were first observed in 2014 by the All-Sky Automated Survey for Supernovae (ASAS-SN) and their peak times are well-modeled with a
Externí odkaz:
http://arxiv.org/abs/2206.11278
Autor:
Hinkle, Jason T., Kochanek, Christopher S., Shappee, Benjamin J., Vallely, Patrick J., Auchettl, Katie, Fausnaugh, Michael, Holoien, Thomas W. -S., Treiber, Helena P., Payne, Anna V., Gaudi, B. Scott, Prieto, Jose L., Stassun, Keivan G., Thompson, Todd A., Tonry, John L., Villanueva Jr, Steven
We analyze high-cadence data from the Transiting Exoplanet Survey Satellite (TESS) of the ambiguous nuclear transient (ANT) ASASSN-18el. The optical changing-look phenomenon in ASASSN-18el has been argued to be due to either a drastic change in the a
Externí odkaz:
http://arxiv.org/abs/2206.04071
Autor:
Hinkle, Jason T., Tucker, Michael A., Shappee, Benjamin. J., Holoien, Thomas W. -S., Vallely, Patrick J., de Jaeger, Thomas, Auchettl, Katie, Aldering, Greg, Ashall, Chris, Desai, Dhvanil D., Do, Aaron, Payne, Anna V., Tonry, John L.
We present the discovery that ATLAS18mlw was a tidal disruption event (TDE) in the galaxy WISEA J073544.83+663717.3, at a distance of 334 Mpc. Initially discovered by the Asteroid Terrestrial Impact Last Alert System (ATLAS) on 2018 March 17.3, the T
Externí odkaz:
http://arxiv.org/abs/2202.05281
Autor:
Holoien, Thomas W. -S., Neustadt, Jack M. M., Vallely, Patrick J., Auchettl, Katie, Hinkle, Jason T., Romero-Cañizales, Cristina, Shappee, Benjamin J., Kochanek, Christopher S., Stanek, K. Z., Chen, Ping, Dong, Subo, Prieto, Jose L., Thompson, Todd A., Brink, Thomas G., Filippenko, Alexei V., Zheng, WeiKang, Bersier, David, Bose, Subhash, Burgasser, Adam J., Channa, Sanyum, de Jaeger, Thomas, Hestenes, Julia, Im, Myungshin, Jeffers, Benjamin, Jun, Hyunsung D., Lansbury, George, Post, Richard S., Ross, Timothy W., Stern, Daniel, Tang, Kevin, Tucker, Michael A., Valenti, Stefano, Yunus, Sameen, Zhang, Keto D.
We present observations of the extremely luminous but ambiguous nuclear transient (ANT) ASASSN-17jz, spanning roughly 1200 days of the object's evolution. ASASSN-17jz was discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) in the gala
Externí odkaz:
http://arxiv.org/abs/2109.07480
Autor:
Hinkle, Jason T., Holoien, Thomas W. -S., Shappee, Benjamin. J., Neustadt, Jack M. M., Auchettl, Katie, Vallely, Patrick J., Shahbandeh, Melissa, Kluge, Matthias, Kochanek, Christopher S., Stanek, K. Z., Huber, Mark E., Post, Richard S., Bersier, David, Ashall, Christopher, Tucker, Michael A., Williams, Jonathan P., de Jaeger, Thomas, Do, Aaron, Fausnaugh, Michael, Gruen, Daniel, Hopp, Ulrich, Obermeier, Christian, Payne, Anna V., Thompson, Todd A.
We present observations of ASASSN-20hx, a nearby ambiguous nuclear transient (ANT) discovered in NGC 6297 by the All-Sky Automated Survey for Supernovae (ASAS-SN). We observed ASASSN-20hx from $-$30 to 275 days relative to peak UV/optical emission us
Externí odkaz:
http://arxiv.org/abs/2108.03245
Autor:
Mishra, Hora D., Dai, Xinyu, Chen, Ping, Cheng, Jigui, Jayasinghe, T., Tucker, Michael A., Vallely, Patrick J., Bersier, David, Bose, Subhash, Do, Aaron, Dong, Subo, Holoien, Thomas W. S., Huber, Mark E., Kochanek, Christopher S., Liang, Enwei, Payne, Anna V., Prieto, Jose, Shappee, Benjamin J., Stanek, K. Z., Bhatiani, Saloni, Cox, John, DeFrancesco, Cora, Shen, Zhiqiang, Thompson, Todd A., Wang, Junfeng
Blazars are active galactic nuclei with their relativistic jets pointing toward the observer, with two major sub-classes, the flat spectrum radio quasars and BL Lac objects. We present multi-wavelength photometric and spectroscopic monitoring observa
Externí odkaz:
http://arxiv.org/abs/2103.08707