Zobrazeno 1 - 10
of 374
pro vyhledávání: '"Ward, Charlotte A."'
Autor:
Ward, Charlotte, Melchior, Peter, Sampson, Matt L., Burke, Colin J., Siegel, Jared, Remy, Benjamin, Birmingham, Sufia, Ramey, Emily, van Velzen, Sjoert
Many science cases for wide-field time-domain surveys rely on accurate identification and characterization of the galaxies hosting transient and variable objects. In the era of the Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observato
Externí odkaz:
http://arxiv.org/abs/2409.15427
Autor:
Onoue, Masafusa, Ding, Xuheng, Silverman, John D., Matsuoka, Yoshiki, Izumi, Takuma, Strauss, Michael A., Ward, Charlotte, Phillips, Camryn L., Andika, Irham T., Aoki, Kentaro, Arita, Junya, Baba, Shunsuke, Bieri, Rebekka, Bosman, Sarah E. I., Eilers, Anna-Christina, Fujimoto, Seiji, Habouzit, Melanie, Haiman, Zoltan, Imanishi, Masatoshi, Inayoshi, Kohei, Ito, Kei, Iwasawa, Kazushi, Jahnke, Knud, Kashikawa, Nobunari, Kawaguchi, Toshihiro, Kohno, Kotaro, Lee, Chien-Hsiu, Li, Junyao, Lupi, Alessandro, Lyu, Jianwei, Nagao, Tohru, Overzier, Roderik, Schindler, Jan-Torge, Schramm, Malte, Scoggins, Matthew T., Shimasaku, Kazuhiro, Toba, Yoshiki, Trakhtenbrot, Benny, Trebitsch, Maxime, Treu, Tommaso, Umehata, Hideki, Venemans, Bram, Vestergaard, Marianne, Volonteri, Marta, Walter, Fabian, Wang, Feige, Yang, Jinyi, Zhang, Haowen
Understanding the rapid formation of supermassive black holes (SMBHs) in the early universe requires an understanding of how stellar mass grows in the host galaxies. Here, we perform an analysis of rest-frame optical spectra and imaging from JWST of
Externí odkaz:
http://arxiv.org/abs/2409.07113
Autor:
Uppal, Anavi, Ward, Charlotte, Gezari, Suvi, Natarajan, Priyamvada, Chen, Nianyi, LaChance, Patrick, Di Matteo, Tiziana
Publikováno v:
ApJ 975 286 (2024)
Supermassive black holes (SMBHs) can be ejected from their galactic centers due to gravitational wave recoil or the slingshot mechanism following a galaxy merger. If an ejected SMBH retains its inner accretion disk, it may be visible as an off-nuclea
Externí odkaz:
http://arxiv.org/abs/2405.11026
Autor:
Burke, Colin J., Liu, Yichen, Ward, Charlotte A., Liu, Xin, Natarajan, Priyamvada, Greene, Jenny E.
We study the black hole mass $-$ host galaxy stellar mass relation, $M_{\rm{BH}}-M_{\ast}$, of a sample of $z<4$ optically-variable AGNs in the COSMOS field. The parent sample of 491 COSMOS AGNs were identified by optical variability from the Hyper S
Externí odkaz:
http://arxiv.org/abs/2402.06882
We present the implementation of a score-matching neural network that represents a data-driven prior for non-parametric galaxy morphologies. The gradients of this prior can be incorporated in the optimization of galaxy models to aid with tasks like d
Externí odkaz:
http://arxiv.org/abs/2401.07313
Autor:
Ward, Charlotte, Gezari, Suvi, Nugent, Peter, Kerr, Matthew, Eracleous, Michael, Frederick, Sara, Hammerstein, Erica, Graham, Matthew J., van Velzen, Sjoert, Kasliwal, Mansi M., Laher, Russ R., Masci, Frank J., Purdum, Josiah, Racine, Benjamin, Smith, Roger
About 3-10\% of Type I active galactic nuclei (AGN) have double-peaked broad Balmer lines in their optical spectra originating from the motion of gas in their accretion disk. Double-peaked profiles arise not only in AGN, but occasionally appear durin
Externí odkaz:
http://arxiv.org/abs/2309.02516
Autor:
Hammerstein, Erica, Cenko, S. Bradley, Gezari, Suvi, Veilleux, Sylvain, O'Connor, Brendan, van Velzen, Sjoert, Ward, Charlotte, Yao, Yuhan, Graham, Matthew
The host galaxies of tidal disruption events (TDEs) have been shown to possess peculiar properties, including high central light concentrations, unusual star-formation histories, and ``green'' colors. The ubiquity of these large-scale galaxy characte
Externí odkaz:
http://arxiv.org/abs/2307.15705
We present an unsupervised search for outliers in the Bright Galaxy Survey (BGS) dataset from the DESI Early Data Release. This analysis utilizes an autoencoder to compress galaxy spectra into a compact, redshift-invariant latent space, and a normali
Externí odkaz:
http://arxiv.org/abs/2307.07664
We present an unsupervised outlier detection method for galaxy spectra based on the spectrum autoencoder architecture spender, which reliably captures spectral features and provides highly realistic reconstructions for SDSS galaxy spectra. We interpr
Externí odkaz:
http://arxiv.org/abs/2302.02496
Autor:
Kopczynska, Maja, Harrison, Simon, Farrer, Kirstine, Leahy, Gavin, Ollerenshaw-Ward, Charlotte, Lal, Simon
Publikováno v:
In Clinical Nutrition ESPEN December 2024 64:66-72
