Search Results - "Morrell, Nidia"

A Modern Search for Wolf-Rayet Stars in the Magellanic Clouds. IV. A Final Census by Neugent, Kathryn F., Massey, Philip, Morrell, Nidia

“…Abstract We summarize the results of our 4 yr survey searching for Wolf-Rayet (WR) stars in the Large Magellanic Cloud (LMC) and Small Magellanic Cloud. Over…”
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The episodic dust-making Wolf-Rayet star HD 38030 in the Large Magellanic Cloud by Williams, Peredur M, Morrell, Nidia I, Boutsia, Konstantina, Massey, Philip

“…ABSTRACT Mid-infrared photometry of the Wolf-Rayet star HD 38030 in the Large Magellanic Cloud from the NEOWISE-R mission show it to have undergone a…”
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WO-type Wolf–Rayet Stars: The Last Hurrah of Massive Star Evolution by Aadland, Erin, Massey, Philip, John Hillier, D., Morrell, Nidia I., Neugent, Kathryn F., Eldridge, J. J.

“…Abstract Are WO-type Wolf–Rayet (WR) stars in the final stage of massive star evolution before core-collapse? Although WC- and WO-type WRs have very similar…”
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The Red Supergiant Binary Fraction of the Large Magellanic Cloud by Neugent, Kathryn F., Levesque, Emily M., Massey, Philip, Morrell, Nidia I., Drout, Maria R.

“…The binary fraction of unevolved massive stars is thought to be 70%-100% but there are few observational constraints on the binary fraction of the evolved…”
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Constraints on the Binarity of the WN3/O3 Class of Wolf–Rayet Stars by Massey, Philip, Neugent, Kathryn F., Morrell, Nidia I.

“…Abstract The WN3/O3 Wolf–Rayet (WR) stars were discovered as part of our survey for WRs in the Magellanic Clouds. The WN3/O3s show the emission lines of a…”
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Reverberation Mapping of Luminous Quasars at High z by Lira, Paulina, Kaspi, Shai, Netzer, Hagai, Botti, Ismael, Morrell, Nidia, Mejía-Restrepo, Julián, Sánchez-Sáez, Paula, Martínez-Palomera, Jorge, López, Paula

“…We present reverberation mapping (RM) results for 17 high-redshift, high-luminosity quasars with good-quality R-band and emission-line light curves. We are…”
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A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131 by Zhou, Jianeng, Wang, Zhongxiang, Chen, Liang, Wiita, Paul J., Vadakkumthani, Jithesh, Morrell, Nidia, Zhang, Pengfei, Zhang, Jujia

“…Since 2016 October, the active galaxy PKS 2247−131 has undergone a γ -ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space…”
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Binary Red Supergiants. II. Discovering and Characterizing B-type Companions by Neugent, Kathryn F., Levesque, Emily M., Massey, Philip, Morrell, Nidia I.

“…The percentage of massive main-sequence OB stars in binary systems is thought to be as high as 100%. However, very few Galactic binary red supergiants (RSGs)…”
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Luminous Type II Short-Plateau Supernovae 2006Y, 2006ai, and 2016egz: A Transitional Class from Stripped Massive Red Supergiants by Hiramatsu, Daichi, Howell, D. Andrew, Moriya, Takashi J., Goldberg, Jared A., Hosseinzadeh, Griffin, Arcavi, Iair, Anderson, Joseph P., Gutiérrez, Claudia P., Burke, Jamison, McCully, Curtis, Valenti, Stefano, Galbany, Lluís, Fang, Qiliang, Maeda, Keiichi, Folatelli, Gastón, Hsiao, Eric Y., Morrell, Nidia I., Phillips, Mark M., Stritzinger, Maximilian D., Suntzeff, Nicholas B., Gromadzki, Mariusz, Maguire, Kate, Müller-Bravo, Tomás E., Young, David R.

“…Abstract The diversity of Type II supernovae (SNe II) is thought to be driven mainly by differences in their progenitor’s hydrogen-rich (H-rich) envelope mass,…”
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The winking eye of a very massive star: WR 21a revealed as an eclipsing binary by TESS by Barbá, Rodolfo H, Gamen, Roberto C, Martín-Ravelo, Pablo, Arias, Julia I, Morrell, Nidia I

“…ABSTRACT WR 21a was known as a massive spectroscopic binary composed of an O2.5 If*/WN6ha primary and an O3 V((f*))z secondary. Although a minimum value, the…”
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The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant by Burns, Christopher R., Parent, Emilie, Phillips, M. M., Stritzinger, Maximilian, Krisciunas, Kevin, Suntzeff, Nicholas B., Hsiao, Eric Y., Contreras, Carlos, Anais, Jorge, Boldt, Luis, Busta, Luis, Campillay, Abdo, Castellón, Sergio, Folatelli, Gastón, Freedman, Wendy L., González, Consuelo, Hamuy, Mario, Heoflich, Peter, Krzeminski, Wojtek, Madore, Barry F., Morrell, Nidia, Persson, S. E., Roth, Miguel, Salgado, Francisco, Serón, Jacqueline, Torres, Simón

“…We present an analysis of the final data release of the Carnegie Supernova Project I, focusing on the absolute calibration of the luminosity-decline rate…”
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Discovery of a Thorne–Żytkow object candidate in the Small Magellanic Cloud by Levesque, Emily M., Massey, Philip, Żytkow, Anna N., Morrell, Nidia

“…Thorne–Żytkow objects (TŻOs) are a theoretical class of star in which a compact neutron star is surrounded by a large, diffuse envelope. Supergiant TŻOs are…”
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The Pan-STARRS1 z > 5.6 Quasar Survey. II. Discovery of 55 Quasars at 5.6 < z < 6.5 by Bañados, Eduardo, Schindler, Jan-Torge, Venemans, Bram P., Connor, Thomas, Decarli, Roberto, Farina, Emanuele Paolo, Mazzucchelli, Chiara, Meyer, Romain A., Stern, Daniel, Walter, Fabian, Fan, Xiaohui, Hennawi, Joseph F., Khusanova, Yana, Morrell, Nidia, Nanni, Riccardo, Noirot, Gaël, Pensabene, Antonio, Rix, Hans-Walter, Simon, Joseph, Verdoes Kleijn, Gijs A., Xie, Zhang-Liang, Yang, Da-Ming, Connor, Andrew

“…Abstract The identification of bright quasars at z ≳ 6 enables detailed studies of supermassive black holes, massive galaxies, structure formation, and the…”
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A Survey for C ii Emission-line Stars in the Large Magellanic Cloud. II. Final Results and the Origin of C ii Emission in [WC] Spectra by Margon, Bruce, Morrell, Nidia, Massey, Philip, Neugent, Kathryn F., Williams, Robert

“…Abstract We present the final results of an imaging and spectroscopic search for stars in the Large Magellanic Cloud (LMC) with C ii λλ 7231, 7236 emission…”
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The SPIRITS Sample of Luminous Infrared Transients: Uncovering Hidden Supernovae and Dusty Stellar Outbursts in Nearby Galaxies by Jencson, Jacob E., Kasliwal, Mansi M., Adams, Scott M., Bond, Howard E., De, Kishalay, Johansson, Joel, Karambelkar, Viraj, Lau, Ryan M., Tinyanont, Samaporn, Ryder, Stuart D., Cody, Ann Marie, Masci, Frank J., Bally, John, Blagorodnova, Nadejda, Castellón, Sergio, Fremling, Christoffer, Gehrz, Robert D., Helou, George, Kilpatrick, Charles D., Milne, Peter A., Morrell, Nidia, Perley, Daniel A., Phillips, M. M., Smith, Nathan, van Dyk, Schuyler D., Williams, Robert E.

“…Abstract We present a systematic study of the most luminous ( M IR [Vega magnitudes] brighter than −14) infrared (IR) transients discovered by the SPitzer…”
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Erratum: "The Red Supergiant Binary Fraction of the Large Magellanic Cloud" (2020, ApJ, 900, 118) by Neugent, Kathryn F., Levesque, Emily M., Massey, Philip, Morrell, Nidia I., Drout, Maria R.

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MULTI-WAVELENGTH OBSERVATIONS OF THE ENDURING TYPE IIn SUPERNOVAE 2005ip AND 2006jd by STRITZINGER, Maximilian, TADDIA, Francesco, CAMPILLAY, Abdo, CASTELLON, Sergio, CONTRERAS, Carlos, FOLATELLI, Gastón, HABERGHAM, S. M, HAMUY, Mario, HJORTH, Jens, JAMES, Phil A, KRZEMINSKI, Wojtek, MATTILA, Seppo, FRANSSON, Claes, PERSSON, Sven E, ROTH, Miguel, FOX, Ori D, MORRELL, Nidia, PHILLIPS, M. M, SOLLERMAN, Jesper, ANDERSON, J. P, BOLDT, Luis, BROWN, Peter J

“…We present an observational study of the Type IIn supernovae (SNe IIn) 2005ip and 2006jd. Broadband UV, optical, and near-IR photometry, and visual-wavelength…”
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Examining the Properties of Low-luminosity Hosts of Type Ia Supernovae from ASAS-SN by 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.

“…Abstract 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…”
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ASASSN-15pz: Revealing Significant Photometric Diversity among 2009dc-like, Peculiar SNe Ia by Chen, Ping, Dong, Subo, Katz, Boaz, Kochanek, C. S., Kollmeier, Juna A., Maguire, K., Phillips, M. M., Prieto, J. L., Shappee, B. J., Stritzinger, M. D., Bose, Subhash, Brown, Peter J., Holoien, T. W.-S., Galbany, L., Milne, Peter A., Morrell, Nidia, Piro, Anthony L., Stanek, K. Z., Thompson, Todd A., Young, D. R.

“…Abstract We report comprehensive multi-wavelength observations of a peculiar Type Ia-like supernova (“SN Ia-pec”) ASASSN-15pz. ASASSN-15pz is a spectroscopic…”
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LINKING TYPE Ia SUPERNOVA PROGENITORS AND THEIR RESULTING EXPLOSIONS by FOLEY, Ryan J, SIMON, Joshua D, BURNS, Christopher R, GAL-YAM, Avishay, HAMUY, Mario, KIRSHNER, Robert P, MORRELL, Nidia I, PHILLIPS, Mark M, SHIELDS, Gregory A, STERNBERG, Assaf

“…Comparing the ejecta velocities at maximum brightness and narrow circumstellar/interstellar Na D absorption line profiles of a sample of 23 Type Ia supernovae…”
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