Quantifying the Impact of LSST $u$-band Survey Strategy on Photometric Redshift Estimation and the Detection of Lyman-break Galaxies

Authors: Crenshaw, John Franklin, Leistedt, Boris, Graham, Melissa Lynn, Payerne, Constantin, Connolly, Andrew J., Gawiser, Eric, Karim, Tanveer, Malz, Alex I., Newman, Jeffrey A., Ricci, Marina, Collaboration, The LSST Dark Energy Science

Subject Terms: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/2503.06016

PhotoD with LSST: Stellar Photometric Distances Out to the Edge of the Galaxy

Authors: Palaversa, Lovro, Ivezić, Željko, Caplar, Neven, Mrakovčić, Karlo, Abel, Bob, Razim, Oleksandra, Matković, Filip, Yablonski, Connor, Šarić, Toni, Jurkić, Tomislav, Campos, Sandro, DeLucchi, Melissa, Jones, Derek, Malanchev, Konstantin, Malz, Alex I., McGuire, Sean, Jurić, Mario

Source: AJ, 169, 119 (2025)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/2502.03179

DeepDISC-photoz: Deep Learning-Based Photometric Redshift Estimation for Rubin LSST

Authors: Merz, Grant, Liu, Xin, Schmidt, Samuel, Malz, Alex I., Zhang, Tianqing, Branton, Doug, Burke, Colin J., Delucchi, Melissa, Ejjagiri, Yaswant Sai, Kubica, Jeremy, Liu, Yichen, Lynn, Olivia, Oldag, Drew, Collaboration, The LSST Dark Energy Science

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/2411.18769

Rubin ToO 2024: Envisioning the Vera C. Rubin Observatory LSST Target of Opportunity program

Authors: Andreoni, Igor, Margutti, Raffaella, Banovetz, John, Greenstreet, Sarah, Hebert, Claire-Alice, Lister, Tim, Palmese, Antonella, Piranomonte, Silvia, Smartt, S. J., Smith, Graham P., Stein, Robert, Ahumada, Tomas, Anand, Shreya, Auchettl, Katie, Bannister, Michele T., Bellm, Eric C., Bloom, Joshua S., Bolin, Bryce T., Bom, Clecio R., Brethauer, Daniel, Brucker, Melissa J., Buckley, David A. H., Chandra, Poonam, Chornock, Ryan, Christensen, Eric, Cooke, Jeff, Corsi, Alessandra, Coughlin, Michael W., Cuevas-Otahola, Bolivia, Filippo, D'Ammando, Dai, Biwei, Dhawan, S., Filippenko, Alexei V., Foley, Ryan J., Franckowiak, Anna, Gomboc, Andreja, Gompertz, Benjamin P., Guy, Leanne P., Hazra, Nandini, Hernandez, Christopher, Hosseinzadeh, Griffin, Hussaini, Maryam, Ibrahimzade, Dina, Izzo, Luca, Jones, R. Lynne, Kang, Yijung, Kasliwal, Mansi M., Knight, Matthew, Kunnumkai, Keerthi, Lamb, Gavin P, LeBaron, Natalie, Lejoly, Cassandra, Levan, Andrew J., MacBride, Sean, Mallia, Franco, Malz, Alex I., Miller, Adam A., Mora, J. C., Narayan, Gautham, J., Nayana A., Nicholl, Matt, Nichols, Tiffany, Oates, S. R., Panayada, Akshay, Ragosta, Fabio, Ribeiro, Tiago, Ryczanowski, Dan, Sarin, Nikhil, Schwamb, Megan E., Sears, Huei, Seligman, Darryl Z., Sharma, Ritwik, Shrestha, Manisha, Simran, Stroh, Michael C., Terreran, Giacomo, Thakur, Aishwarya Linesh, Trivedi, Aum, Tyson, J. Anthony, Utsumi, Yousuke, Verma, Aprajita, Villar, V. Ashley, Volk, Kathryn, Vyas, Meet J., Wasserman, Amanda R., Wheeler, J. Craig, Yoachim, Peter, Zegarelli, Angela, Bianco, Federica

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2411.04793

A holistic exploration of the potentially recoverable redshift information of Stage IV galaxy surveys

Authors: Scott, Bryan R, Malz, Alex I, Sorba, Robert

Subject Terms: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies

Access URL: http://arxiv.org/abs/2409.20443

The Blending ToolKit: A simulation framework for evaluation of galaxy detection and deblending

Authors: Mendoza, Ismael, Torchylo, Andrii, Sainrat, Thomas, Guinot, Axel, Boucaud, Alexandre, Paillassa, Maxime, Avestruz, Camille, Adari, Prakruth, Aubourg, Eric, Biswas, Biswajit, Buchanan, James, Burchat, Patricia, Doux, Cyrille, Joseph, Remy, Kamath, Sowmya, Malz, Alex I., Merz, Grant, Miyatake, Hironao, Roucelle, Cécile, Zhang, Tianqing, Collaboration, the LSST Dark Energy Science

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2409.06986

Impact of survey spatial variability on galaxy redshift distributions and the cosmological $3\times2$-point statistics for the Rubin Legacy Survey of Space and Time (LSST)

Authors: Hang, Qianjun, Joachimi, Benjamin, Charles, Eric, Crenshaw, John Franklin, Larsen, Patricia, Malz, Alex I., Schmidt, Sam, Yan, Ziang, Zhang, Tianqing, Collaboration, the LSST Dark Energy Science

Subject Terms: Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2409.02501

Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows

Authors: Crenshaw, John Franklin, Kalmbach, J. Bryce, Gagliano, Alexander, Yan, Ziang, Connolly, Andrew J., Malz, Alex I., Schmidt, Samuel J., Collaboration, The LSST Dark Energy Science

Source: AJ 168 80 (2024)

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2405.04740

Astrometric Redshifts of Supernovae

Authors: Lee, Jaemyoung Jason, Sako, Masao, Kessler, Richard, Malz, Alex I., Collaboration, The LSST Dark Energy Science

Subject Terms: Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2405.04522

Superphot+: Realtime Fitting and Classification of Supernova Light Curves

Authors: de Soto, Kaylee M., Villar, Ashley, Berger, Edo, Gomez, Sebastian, Hosseinzadeh, Griffin, Branton, Doug, Campos, Sandro, DeLucchi, Melissa, Kubica, Jeremy, Lynn, Olivia, Malanchev, Konstantin, Malz, Alex I.

Subject Terms: Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2403.07975

Improving Photometric Redshift Estimates with Training Sample Augmentation

Authors: Moskowitz, Irene, Gawiser, Eric, Crenshaw, John Franklin, Andrews, Brett H., Malz, Alex I., Schmidt, Samuel, Collaboration, The LSST Dark Energy Science

Source: ApJL 967 L6 (2024)

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2402.15551

Are classification metrics good proxies for SN Ia cosmological constraining power?

Authors: Malz, Alex I., Dai, Mi, Ponder, Kara A., Ishida, Emille E. O., Gonzalez-Gaitain, Santiago, Durgesh, Rupesh, Krone-Martins, Alberto, de Souza, Rafael S., Kennamer, Noble, Sreejith, Sreevarsha, Galbany, Lluis, Collaboration, The LSST Dark Energy Science, Initiative, The Cosmostatistics

Source: A&A 694, A130 (2025)

Subject Terms: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/2305.14421

First Impressions: Early-Time Classification of Supernovae using Host Galaxy Information and Shallow Learning

Authors: Gagliano, Alexander, Contardo, Gabriella, Foreman-Mackey, Daniel, Malz, Alex I., Aleo, Patrick D.

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2305.08894

From Data to Software to Science with the Rubin Observatory LSST

Authors: Breivik, Katelyn, Connolly, Andrew J., Ford, K. E. Saavik, Jurić, Mario, Mandelbaum, Rachel, Miller, Adam A., Norman, Dara, Olsen, Knut, O'Mullane, William, Price-Whelan, Adrian, Sacco, Timothy, Sokoloski, J. L., Villar, Ashley, Acquaviva, Viviana, Ahumada, Tomas, AlSayyad, Yusra, Alves, Catarina S., Andreoni, Igor, Anguita, Timo, Best, Henry J., Bianco, Federica B., Bonito, Rosaria, Bradshaw, Andrew, Burke, Colin J., de Campos, Andresa Rodrigues, Cantiello, Matteo, Caplar, Neven, Chandler, Colin Orion, Chan, James, da Costa, Luiz Nicolaci, Danieli, Shany, Davenport, James R. A., Fabbian, Giulio, Fagin, Joshua, Gagliano, Alexander, Gall, Christa, Camargo, Nicolás Garavito, Gawiser, Eric, Gezari, Suvi, Gomboc, Andreja, Gonzalez-Morales, Alma X., Graham, Matthew J., Gschwend, Julia, Guy, Leanne P., Holman, Matthew J., Hsieh, Henry H., Hundertmark, Markus, Ilić, Dragana, Ishida, Emille E. O., Jurkić, Tomislav, Kannawadi, Arun, Kosakowski, Alekzander, Kovačević, Andjelka B., Kubica, Jeremy, Lanusse, François, Lazar, Ilin, Levine, W. Garrett, Li, Xiaolong, Lu, Jing, Luna, Gerardo Juan Manuel, Mahabal, Ashish A., Malz, Alex I., Mao, Yao-Yuan, Medan, Ilija, Moeyens, Joachim, Nikolić, Mladen, Nikutta, Robert, O'Dowd, Matt, Olsen, Charlotte, Pearson, Sarah, Pedraza, Ilhuiyolitzin Villicana, Popinchalk, Mark, Popović, Luka C., Pritchard, Tyler A., Quint, Bruno C., Radović, Viktor, Ragosta, Fabio, Riccio, Gabriele, Riley, Alexander H., Rożek, Agata, Sánchez-Sáez, Paula, Sarro, Luis M., Saunders, Clare, Savić, Đorđe V., Schmidt, Samuel, Scott, Adam, Shirley, Raphael, Smotherman, Hayden R., Stetzler, Steven, Storey-Fisher, Kate, Street, Rachel A., Trilling, David E., Tsapras, Yiannis, Ustamujic, Sabina, van Velzen, Sjoert, Vázquez-Mata, José Antonio, Venuti, Laura, Wyatt, Samuel, Yu, Weixiang, Zabludoff, Ann

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/2208.02781

The Simulated Catalogue of Optical Transients and Correlated Hosts (SCOTCH)

Authors: Lokken, Martine, Gagliano, Alexander, Narayan, Gautham, Hložek, Renée, Kessler, Richard, Crenshaw, John Franklin, Salo, Laura, Alves, Catarina S., Chatterjee, Deep, Vincenzi, Maria, Malz, Alex I., Collaboration, The LSST Dark Energy Science

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/2206.02815

The sensitivity of GPz estimates of photo-z posterior PDFs to realistically complex training set imperfections

Authors: Stylianou, Natalia, Malz, Alex I., Hatfield, Peter, Crenshaw, John Franklin, Gschwend, Julia

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2202.12775

Re-calibrating Photometric Redshift Probability Distributions Using Feature-space Regression

Authors: Dey, Biprateep, Newman, Jeffrey A., Andrews, Brett H., Izbicki, Rafael, Lee, Ann B., Zhao, David, Rau, Markus Michael, Malz, Alex I.

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Computer Science - Machine Learning, Statistics - Methodology, Statistics - Machine Learning

Access URL: http://arxiv.org/abs/2110.15209

The LSST-DESC 3x2pt Tomography Optimization Challenge

Authors: Zuntz, Joe, Lanusse, François, Malz, Alex I., Wright, Angus H., Slosar, Anže, Abolfathi, Bela, Alonso, David, Bault, Abby, Bom, Clécio R., Brescia, Massimo, Broussard, Adam, Campagne, Jean-Eric, Cavuoti, Stefano, Cypriano, Eduardo S., Fraga, Bernardo M. O., Gawiser, Eric, Gonzalez, Elizabeth J., Green, Dylan, Hatfield, Peter, Iyer, Kartheik, Kirkby, David, Nicola, Andrina, Nourbakhsh, Erfan, Park, Andy, Teixeira, Gabriel, Heitmann, Katrin, Kovacs, Eve, Mao, Yao-Yuan

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics

Access URL: http://arxiv.org/abs/2108.13418

CLMM: a LSST-DESC Cluster weak Lensing Mass Modeling library for cosmology

Authors: Aguena, M., Avestruz, C., Combet, C., Fu, S., Herbonnet, R., Malz, A. I., Penna-Lima, M., Ricci, M., Vitenti, S. D. P., Baumont, L., Fan, H., Fong, M., Ho, M., Kirby, M., Payerne, C., Boutigny, D., Lee, B., Liu, B., McClintock, T., Miyatake, H., Sifón, C., von der Linden, A., Wu, H., Yoon, M., Collaboration, The LSST Dark Energy Science

Subject Terms: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/2107.10857

An information-based metric for observing strategy optimization, demonstrated in the context of photometric redshifts with applications to cosmology

Authors: Malz, Alex I., Lanusse, François, Crenshaw, John Franklin, Graham, Melissa L.

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies

Access URL: http://arxiv.org/abs/2104.08229