Search Results
Showing 1-20 of about 24 results.
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The Time Domain Spectroscopic Survey: Changing-look Quasar Candidates from Multi-epoch Spectroscopy in SDSS-IVDOI: info:10.3847/1538-4357/ac743fv. 933180
Green, Paul J., Pulgarin-Duque, Lina, Anderson, Scott F., MacLeod, Chelsea L., Eracleous, Michael, Ruan, John J., Runnoe, Jessie, Graham, Matthew, Roulston, Benjamin R., Schneider, Donald P., Ahlf, Austin, Bizyaev, Dmitry, Brownstein, Joel R., del Casal, Sonia Joesephine, Dodd, Sierra A., Hoover, Daniel, Matt, Cayenne, Merloni, Andrea, Pan, Kaike, Ramirez, Arnulfo, and Ridder, Margaret. 2022. "The Time Domain Spectroscopic Survey: Changing-look Quasar Candidates from Multi-epoch Spectroscopy in SDSS-IV." The Astrophysical Journal, 933 180. https://doi.org/10.3847/1538-4357/ac743f.
A Transient "Changing-look" Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V DataDOI: info:10.3847/2041-8213/ac9a47v. 939L16
Zeltyn, Grisha, Trakhtenbrot, Benny, Eracleous, Michael, Runnoe, Jessie, Trump, Jonathan R., Stern, Jonathan, Shen, Yue, Hernández-García, Lorena, Bauer, Franz E., Yang, Qian, Dwelly, Tom, Ricci, Claudio, Green, Paul, Anderson, Scott F., Assef, Roberto J., Guolo, Muryel, MacLeod, Chelsea, Davis, Megan C., Fries, Logan, Gezari, Suvi, Grogin, Norman A., Homan, David, Koekemoer, Anton M., Krumpe, Mirko, LaMassa, Stephanie et al. 2022. "A Transient "Changing-look" Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V Data." The Astrophysical Journal, 939 L16. https://doi.org/10.3847/2041-8213/ac9a47.
Improving Damped Random Walk Parameters for SDSS Stripe 82 Quasars with Pan-STARRS1DOI: info:10.3847/1538-4357/abc698v. 90796
Suberlak, Krzysztof L., MacLeod, Chelsea, and Ivezić, Željko. 2021. "Improving Damped Random Walk Parameters for SDSS Stripe 82 Quasars with Pan-STARRS1." The Astrophysical Journal, 907 96. https://doi.org/10.3847/1538-4357/abc698.
The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS SpectraDOI: info:10.3847/1538-4365/ab929ev. 2493
Ahumada, Romina, Allende Prieto, Carlos, Almeida, Andrés, Anders, Friedrich, Anderson, Scott F., Andrews, Brett H., Anguiano, Borja, Arcodia, Riccardo, Armengaud, Eric, Aubert, Marie, Avila, Santiago, Avila-Reese, Vladimir, Badenes, Carles, Balland, Christophe, Barger, Kat, Barrera-Ballesteros, Jorge K., Basu, Sarbani, Bautista, Julian, Beaton, Rachael L., Beers, Timothy C., Benavides, B. Izamar T., Bender, Chad F., Bernardi, Mariangela, Bershady, Matthew, Beutler, Florian et al. 2020. "The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra." The Astrophysical Journal Supplement Series, 249 3. https://doi.org/10.3847/1538-4365/ab929e.
The Destruction and Recreation of the X-Ray Corona in a Changing-look Active Galactic NucleusDOI: info:10.3847/2041-8213/ab91a1v. 898L1
Ricci, C., Kara, E., Loewenstein, M., Trakhtenbrot, B., Arcavi, I., Remillard, R., Fabian, A. C., Gendreau, K. C., Arzoumanian, Z., Li, R., Ho, L. C., MacLeod, Chelsea L., Cackett, E., Altamirano, D., Gandhi, P., Kosec, P., Pasham, D., Steiner, James, and Chan, C. -H. 2020. "The Destruction and Recreation of the X-Ray Corona in a Changing-look Active Galactic Nucleus." The Astrophysical Journal, 898 L1. https://doi.org/10.3847/2041-8213/ab91a1.
Gemini Imaging of the Host Galaxies of Changing-look QuasarsDOI: info:10.3847/1538-4357/ab0ec1v. 87675
Charlton, Paul J. L., Ruan, John J., Haggard, Daryl, Anderson, Scott F., Eracleous, Michael, MacLeod, Chelsea L., and Runnoe, Jessie C. 2019. "Gemini Imaging of the Host Galaxies of Changing-look Quasars." The Astrophysical Journal, 876 75. https://doi.org/10.3847/1538-4357/ab0ec1.
The `Big Dipper': the nature of the extreme variability of the AGN SDSS J2232-0806DOI: info:10.1093/mnras/stz517v. 4852573–2588
Kynoch, Daniel, Ward, Martin J., Lawrence, Andy, Bruce, Alastair G., Landt, Hermine, and MacLeod, Chelsea L. 2019. "The `Big Dipper': the nature of the extreme variability of the AGN SDSS J2232-0806." Monthly Notices of the Royal Astronomical Society, 485 2573–2588. https://doi.org/10.1093/mnras/stz517.
SDSS-IV eBOSS Spectroscopy of X-Ray and WISE AGNs in Stripe 82X: Overview of the Demographics of X-Ray- and Mid-infrared-selected Active Galactic NucleiDOI: info:10.3847/1538-4357/ab108bv. 87650
LaMassa, Stephanie M., Georgakakis, Antonis, Vivek, M., Salvato, Mara, Ananna, Tonima Tasnim, Urry, C. Meg, MacLeod, Chelsea, and Ross, Nicholas. 2019. "SDSS-IV eBOSS Spectroscopy of X-Ray and WISE AGNs in Stripe 82X: Overview of the Demographics of X-Ray- and Mid-infrared-selected Active Galactic Nuclei." The Astrophysical Journal, 876 50. https://doi.org/10.3847/1538-4357/ab108b.
Changing-look Quasar Candidates: First Results from Follow-up Spectroscopy of Highly Optically Variable QuasarsDOI: info:10.3847/1538-4357/ab05e2v. 8748
MacLeod, Chelsea L., Green, Paul J., Anderson, Scott F., Bruce, Alastair, Eracleous, Michael, Graham, Matthew, Homan, David, Lawrence, Andy, Lebleu, Amy, Ross, Nicholas P., Ruan, John J., Runnoe, Jessie, Stern, Daniel, Burgett, William, Chambers, Kenneth C., Kaiser, Nick, Magnier, Eugene, and Metcalfe, Nigel. 2019. "Changing-look Quasar Candidates: First Results from Follow-up Spectroscopy of Highly Optically Variable Quasars." The Astrophysical Journal, 874 8. https://doi.org/10.3847/1538-4357/ab05e2.
Kilonovae: nUV/Optical/IR Counterparts of Neutron Star Binary Mergers with TSO
Metzger, Brian, Berger, Edo, Grindlay, Jonathan, Gezari, Suvi, Iveziv, Zeljko, Jencson, Jacob, Kasliwal, Mansi, Kutyrev, Alexander, MacLeod, Chelsea, Melnick, Gary, Purcell, Bill, Rieke, George, Shen, Yue, Tanvi, Nial, and Vasey, Michael Wood. 2019. Kilonovae: nUV/Optical/IR Counterparts of Neutron Star Binary Mergers with TSO. 306. In Astro2020: Decadal Survey on Astronomy and Astrophysics, science white papers.
The Time-domain Spectroscopic Survey: Radial Velocity Variability in Dwarf Carbon StarsDOI: info:10.3847/1538-4357/ab1a3ev. 87744
Roulston, Benjamin R., Green, Paul J., Ruan, John J., MacLeod, Chelsea L., Anderson, Scott F., Badenes, Carles, Brownstein, Joel R., Schneider, Donald P., and Stassun, Keivan G. 2019. "The Time-domain Spectroscopic Survey: Radial Velocity Variability in Dwarf Carbon Stars." The Astrophysical Journal, 877 44. https://doi.org/10.3847/1538-4357/ab1a3e.
The Analogous Structure of Accretion Flows in Supermassive and Stellar Mass Black Holes: New Insights from Faded Changing-look QuasarsDOI: info:10.3847/1538-4357/ab3c1av. 88376
Ruan, John J., Anderson, Scott F., Eracleous, Michael, Green, Paul J., Haggard, Daryl, MacLeod, Chelsea L., Runnoe, Jessie C., and Sobolewska, Malgosia A. 2019. "The Analogous Structure of Accretion Flows in Supermassive and Stellar Mass Black Holes: New Insights from Faded Changing-look Quasars." The Astrophysical Journal, 883 76. https://doi.org/10.3847/1538-4357/ab3c1a.
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution ExperimentDOI: info:10.3847/1538-4365/aa9e8av. 23542
Abolfathi, Bela, Aguado, D. S., Aguilar, Gabriela, Allende Prieto, Carlos, Almeida, Andres, Tasnim Ananna, Tonima, Anders, Friedrich, Anderson, Scott F., Andrews, Brett H., Anguiano, Borja, Aragón-Salamanca, Alfonso, Argudo-Fernández, Maria, Armengaud, Eric, Ata, Metin, Aubourg, Eric, Avila-Reese, Vladimir, Badenes, Carles, Bailey, Stephen, Balland, Christophe, Barger, Kathleen A., Barrera-Ballesteros, Jorge, Bartosz, Curtis, Bastien, Fabienne, Bates, Dominic, Baumgarten, Falk et al. 2018. "The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment." The Astrophysical Journal Supplement Series, 235 42. https://doi.org/10.3847/1538-4365/aa9e8a.
The Type I Superluminous Supernova PS16aqv: Lightcurve Complexity and Deep Limits on Radioactive Ejecta in a Fast EventDOI: info:10.3847/1538-4357/aad8b9v. 8659
Blanchard, P. K., Nicholl, M., Berger, E., Chornock, R., Margutti, R., Milisavljevic, D., Fong, W., MacLeod, C., and Bhirombhakdi, K. 2018. "The Type I Superluminous Supernova PS16aqv: Lightcurve Complexity and Deep Limits on Radioactive Ejecta in a Fast Event." The Astrophysical Journal, 865 9. https://doi.org/10.3847/1538-4357/aad8b9.
Collinson, James S., Ward, Martin J., Lawrence, Andy, Bruce, Alastair, MacLeod, Chelsea L., Elvis, Martin, Gezari, Suvi, Marshall, Philip J., and Done, Chris. 2018. "The broad-band SEDs of four `hypervariable' AGN." Monthly Notices of the Royal Astronomical Society, 474 3565–3575. https://doi.org/10.1093/mnras/stx2992.
The Time-domain Spectroscopic Survey: Target Selection for Repeat SpectroscopyDOI: info:10.3847/1538-3881/aa99dav. 1556
MacLeod, Chelsea L., Green, Paul J., Anderson, Scott F., Eracleous, Michael, Ruan, John J., Runnoe, Jessie, Nielsen Brandt, William, Badenes, Carles, Greene, Jenny, Morganson, Eric, Schmidt, Sarah J., Schwope, Axel, Shen, Yue, Amaro, Rachael, Lebleu, Amy, Filiz Ak, Nurten, Grier, Catherine J., Hoover, Daniel, McGraw, Sean M., Dawson, Kyle, Hall, Patrick B., Hawley, Suzanne L., Mariappan, Vivek, Myers, Adam D., Pâris, Isabelle et al. 2018. "The Time-domain Spectroscopic Survey: Target Selection for Repeat Spectroscopy." The Astronomical Journal, 155 6. https://doi.org/10.3847/1538-3881/aa99da.
The 13th Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey Mapping Nearby Galaxies at Apache Point ObservatoryDOI: info:10.3847/1538-4365/aa8992v. 23325
Albareti, Franco D., Allende Prieto, Carlos, Almeida, Andres, Anders, Friedrich, Anderson, Scott, Andrews, Brett H., Aragón-Salamanca, Alfonso, Argudo-Fernández, Maria, Armengaud, Eric, Aubourg, Eric, Avila-Reese, Vladimir, Badenes, Carles, Bailey, Stephen, Barbuy, Beatriz, Barger, Kat, Barrera-Ballesteros, Jorge, Bartosz, Curtis, Basu, Sarbani, Bates, Dominic, Battaglia, Giuseppina, Baumgarten, Falk, Baur, Julien, Bautista, Julian, Beers, Timothy C., Belfiore, Francesco et al. 2017. "The 13th Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey Mapping Nearby Galaxies at Apache Point Observatory." The Astrophysical Journal Supplement Series, 233 25. https://doi.org/10.3847/1538-4365/aa8992.
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant UniverseDOI: info:10.3847/1538-3881/aa7567v. 15428
Blanton, Michael R., Bershady, Matthew A., Abolfathi, Bela, Albareti, Franco D., Allende Prieto, Carlos, Almeida, Andres, Alonso-García, Javier, Anders, Friedrich, Anderson, Scott F., Andrews, Brett, Aquino-Ortíz, Erik, Aragón-Salamanca, Alfonso, Argudo-Fernández, Maria, Armengaud, Eric, Aubourg, Eric, Avila-Reese, Vladimir, Badenes, Carles, Bailey, Stephen, Barger, Kathleen A., Barrera-Ballesteros, Jorge, Bartosz, Curtis, Bates, Dominic, Baumgarten, Falk, Bautista, Julian, Beaton, Rachael et al. 2017. "Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe." The Astronomical Journal, 154 28. https://doi.org/10.3847/1538-3881/aa7567.
Spectral analysis of four `hypervariable' AGN: a micro-needle in the haystack?DOI: info:10.1093/mnras/stx168v. 4671259–1280
Bruce, A., Lawrence, A., MacLeod, C., Elvis, M., Ward, M. J., Collinson, J. S., Gezari, S., Marshall, P. J., Lam, M. C., Kotak, R., Inserra, C., Polshaw, J., Kaiser, N., Kudritzki, R. -P, Magnier, E. A., and Waters, C. 2017. "Spectral analysis of four `hypervariable' AGN: a micro-needle in the haystack?" Monthly Notices of the Royal Astronomical Society, 467 1259–1280. https://doi.org/10.1093/mnras/stx168.
Detection of Time Lags between Quasar Continuum Emission Bands Based On Pan-STARRS Light CurvesDOI: info:10.3847/1538-4357/aa5b91v. 836186
Jiang, Yan-Fei, Green, Paul J., Greene, Jenny E., Morganson, Eric, Shen, Yue, Pancoast, Anna, MacLeod, Chelsea L., Anderson, Scott F., Brandt, W. N., Grier, C. J., Rix, H. -W, Ruan, John J., Protopapas, Pavlos, Scott, Caroline, Burgett, W. S., Hodapp, K. W., Huber, M. E., Kaiser, N., Kudritzki, R. P., Magnier, E. A., Metcalfe, N., Tonry, J. T., Wainscoat, R. J., and Waters, C. 2017. "Detection of Time Lags between Quasar Continuum Emission Bands Based On Pan-STARRS Light Curves." The Astrophysical Journal, 836 186. https://doi.org/10.3847/1538-4357/aa5b91.
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