Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Aghakhanloo, Mojgan"'
Autor:
Shrestha, Manisha, Sand, David J., Alexander, Kate D., Bostroem, K. Azalee, Hosseinzadeh, Griffin, Pearson, Jeniveve, Aghakhanloo, Mojgan, Vinkó, József, Andrews, Jennifer E., Jencson, Jacob E., Lundquist, M. J., Wyatt, Samuel, Howell, D. Andrew, McCully, Curtis, Gonzalez, Estefania Padilla, Pellegrino, Craig, Terreran, Giacomo, Hiramatsu, Daichi, Newsome, Megan, Farah, Joseph, Jha, Saurabh W., Smith, Nathan, Wheeler, J. Craig, Martínez-Vázquez, Clara, Carballo-Bello, Julio A., Drlica-Wagner, Alex, James, David J., Mutlu-Pakdil, Burçin, Stringfellow, Guy S., Sakowska, Joanna D., Noël, Noelia E. D., Bom, Clécio R., Kuehn, Kyler
We present photometric and spectroscopic observations of the extraordinary gamma-ray burst (GRB) 221009A in search of an associated supernova. Some past GRBs have shown bumps in the optical light curve that coincide with the emergence of supernova sp
Externí odkaz:
http://arxiv.org/abs/2302.03829
Autor:
Aghakhanloo, Mojgan, Smith, Nathan, Milne, Peter, Andrews, Jennifer E., Van Dyk, Schuyler D., Filippenko, Alexei V., Jencson, Jacob E., Lau, Ryan M., Sand, David J., Wyatt, Samuel, Zheng, WeiKang
We present the first photometric analysis of the supernova (SN) impostor AT 2016blu in NGC 4559. This transient was discovered by the Lick Observatory Supernova Search in 2012 and has continued its outbursts since then. Optical and infrared photometr
Externí odkaz:
http://arxiv.org/abs/2212.09708
Autor:
Aghakhanloo, Mojgan, Smith, Nathan, Milne, Peter, Andrews, Jennifer E., Filippenko, Alexei V., Jencson, Jacob E., Sand, David J., Van Dyk, Schuyler D., Wyatt, Samuel, Zheng, WeiKang
We analyse photometric observations of the supernova (SN) impostor SN 2000ch in NGC 3432 covering the time since its discovery. This source was previously observed to have four outbursts in 2000-2010. Observations now reveal at least three additional
Externí odkaz:
http://arxiv.org/abs/2212.00113
Autor:
Jencson, Jacob E., Sand, David J., Andrews, Jennifer E., Smith, Nathan, Strader, Jay, Aghakhanloo, Mojgan, Pearson, Jeniveve, Valenti, Stefano
Publikováno v:
ApJL, 935, L33 (2022)
We present Hubble Space Telescope (HST) imaging of the site of SN 2015bh in the nearby spiral galaxy NGC 2770 taken between 2017 and 2019, nearly four years after the peak of the explosion. In 2017-2018, the transient fades steadily in optical filter
Externí odkaz:
http://arxiv.org/abs/2206.02816
Autor:
Aghakhanloo, Mojgan, Smith, Nathan, Andrews, Jennifer, Olsen, Knut, Besla, Gurtina, Choi, Yumi
We study the kinematics of luminous blue variables (LBVs) in the Large Magellanic Cloud (LMC). Using high-resolution spectra, we measure the systemic radial velocities for a sample of 16 LBVs and LBV candidates. In order to measure the net motion of
Externí odkaz:
http://arxiv.org/abs/2202.06887
Autor:
Aghakhanloo, Mojgan, Murphy, Jeremiah W., Smith, Nathan, Parejko, John, Díaz-Rodríguez, Mariangelly, Drout, Maria R., Groh, Jose H., Guzman, Joseph, Stassun, Keivan G.
Using {\it Gaia} Early Data Release 3 (EDR3) parallaxes and Bayesian inference, we infer a parallax of the Westerlund 1 (Wd1) cluster. We find a parallax of $0.34\pm{0.05}$ mas corresponding to a distance of $2.8^{+0.7}_{-0.6}$ kpc. The new {\it Gaia
Externí odkaz:
http://arxiv.org/abs/2101.06285
Autor:
Aghakhanloo, Mojgan, Murphy, Jeremiah W., Smith, Nathan, Parejko, John, Díaz-Rodríguez, Mariangelly, Drout, Maria R., Groh, Jose H., Guzman, Joseph, Stassun, Keivan G.
Publikováno v:
2020MNRAS.492.2497A
Westerlund 1 (Wd1) is potentially the largest star cluster in the Galaxy. That designation critically depends upon the distance to the cluster, yet the cluster is highly obscured, making luminosity-based distance estimates difficult. Using {\it Gaia}
Externí odkaz:
http://arxiv.org/abs/1901.06582
Autor:
Smith, Nathan, Aghakhanloo, Mojgan, Murphy, Jeremiah W., Drout, Maria R., Stassun, Keivan G., Groh, Jose H.
We examine parallaxes and distances for Galactic luminous blue variables (LBVs) in Gaia DR2. The sample includes 11 LBVs and 14 LBV candidates. For about half of the sample, DR2 distances are either similar to commonly adopted literature values, or t
Externí odkaz:
http://arxiv.org/abs/1805.03298
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 472, Issue 1, 21 November 2017, Pages 591-603
Observations show that luminous blue variables (LBVs) are far more dispersed than massive O-type stars, and Smith & Tombleson suggested that these large separations are inconsistent with a single-star evolution model of LBVs. Instead, they suggested
Externí odkaz:
http://arxiv.org/abs/1701.05626
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