Zobrazeno 1 - 10
of 737
pro vyhledávání: '"GuhaThakurta, Puragra"'
Autor:
Mihos, J. Christopher, Durrell, Patrick R., Toloba, Elisa, Peng, Eric W., Lim, Sungsoon, Côté, Patrick, Guhathakurta, Puragra, Ferrarese, Laura
We use Hubble Space Telescope imaging to study the globular cluster system of the Virgo Cluster ultradiffuse galaxy (UDG) VCC 615. We select globular cluster candidates through a combination of size and color, while simultaneously rejecting contamina
Externí odkaz:
http://arxiv.org/abs/2412.01730
Autor:
Gilbert, Karoline M., Choi, Yumi, Boyer, Martha L., Williams, Benjamin F., Weisz, Daniel R., Bell, Eric F., Dalcanton, Julianne J., McQuinn, Kristen B. W., Skillman, Evan D., Costa, Guglielmo, Fouesneau, Morgan, Girardi, Léo, Goldman, Steven R., Gordon, Karl D., Guhathakurta, Puragra, Gull, Maude, Hagen, Lea, Huynh, Ky, Lindberg, Christina W., Marigo, Paola, Murray, Claire E., Pastorelli, Giada, Merica-Jones, Petia Yanchulova
The Local Ultraviolet to Infrared Treasury (LUVIT) is a Hubble Space Telescope program that combines newly acquired data in the near ultraviolet (NUV), optical, and near infrared (NIR) with archival optical and NIR imaging to produce multiband panchr
Externí odkaz:
http://arxiv.org/abs/2410.20454
Autor:
Gull, Maude, Weisz, Daniel R., El-Badry, Kareem, Henneco, Jan, Savino, Alessandro, Durbin, Meredith, Choi, Yumi, Cohen, Roger E., Cole, Andrew A., Correnti, Matteo, Dalcanton, Julianne J., Gilbert, Karoline M., Goldman, Steven R., Guhathakurta, Puragra, McQuinn, Kristen B. W., Newman, Max J. B., Skillman, Evan D., Williams, Benjamin F.
We present archival HST and JWST ultraviolet through near infrared time series photometric observations of a massive minimal-contact binary candidate in the metal-poor galaxy WLM ($Z = 0.14 Z_{\odot}$). This discovery marks the lowest metallicity con
Externí odkaz:
http://arxiv.org/abs/2410.16393
Autor:
Smith, Richard, Patel, Avi, Soraisam, Monika D., Guhathakurta, Puragra, Tadepalli, Pranav, Zhu, Sally, Liu, Joseph, Girardi, Léo, Johnson, L. Clifton, Mukherjee, Sagnick, Olsen, Knut A. G., Williams, Benjamin F.
Variable stars in stellar clusters can offer key constraints on stellar evolution and pulsation models, utilising estimates of host cluster properties to constrain stellar physical parameters. We present a catalogue of 86 luminous (F814W<19) variable
Externí odkaz:
http://arxiv.org/abs/2408.12765
Autor:
Ogami, Itsuki, Komiyama, Yutaka, Chiba, Masashi, Tanaka, Mikito, Guhathakurta, Puragra, Kirby, Evan N., Wyse, Rosemary F. G., Filion, Carrie, Kirihara, Takanobu, Ishigaki, Miho N., Hayashi, Kohei
We report the detection of a dwarf satellite candidate (Triangulum IV: Tri IV) of the Triangulum galaxy (M33) using the deep imaging of Subaru/Hyper Suprime-Cam (HSC). From the apparent magnitude of the horizontal branch in Tri IV, the heliocentric d
Externí odkaz:
http://arxiv.org/abs/2407.07481
Autor:
Wainer, Tobin M., Williams, Benjamin F., Johnson, L. Clifton, Weisz, Daniel R., Dalcanton, Julianne J., Seth, Anil C., Dolphin, Andrew, Durbin, Meredith J., Bell, Eric F., Chen, Zhuo, Guhathakurta, Puragra, Koch, Eric W., Lindberg, Christina W., Rosolowsky, Erik, Sandstrom, Karin M., Skillman, Evan D., Smercina, Adam, TorresVillanueva, Estephani E.
We measure the high-mass stellar initial mass function (IMF) from resolved stars in M33 young stellar clusters. Leveraging \textit{Hubble Space Telescope's} high resolving power, we fully model the IMF probabilistically. We first model the optical CM
Externí odkaz:
http://arxiv.org/abs/2406.12129
Autor:
Ogami, Itsuki, Komiyama, Yutaka, Chiba, Masashi, Tanaka, Mikito, Guhathakurta, Puragra, Kirby, Evan N., Wyse, Rosemary F. G., Filion, Carrie, Kirihara, Takanobu, Ishigaki, Miho N., Hayashi, Kohei
We analyze the outer regions of M33, beyond 15 kpc in projected distance from its center using Subaru/HSC multi-color imaging. We identify Red Giant Branch (RGB) stars and Red Clump (RC) stars using the surface gravity sensitive $NB515$ filter for th
Externí odkaz:
http://arxiv.org/abs/2403.14234
Autor:
Richstein, Hannah, Kallivayalil, Nitya, Simon, Joshua D., Garling, Christopher T., Wetzel, Andrew, Warfield, Jack T., van der Marel, Roeland P., Jeon, Myoungwon, Rose, Jonah C., Torrey, Paul, Engelhardt, Anna Claire, Besla, Gurtina, Choi, Yumi, Geha, Marla, Guhathakurta, Puragra, Kirby, Evan N., Patel, Ekta, Sacchi, Elena, Sohn, Sangmo Tony
We present deep Hubble Space Telescope (HST) photometry of ten targets from Treasury Program GO-14734, including six confirmed ultra-faint dwarf galaxies (UFDs), three UFD candidates, and one likely globular cluster. Six of these targets are satellit
Externí odkaz:
http://arxiv.org/abs/2402.08731
Autor:
El-Badry, Kareem, Simon, Joshua D., Reggiani, Henrique, Rix, Hans-Walter, Latham, David W., Bieryla, Allyson, Buchhave, Lars A., Shahaf, Sahar, Mazeh, Tsevi, Chakrabarti, Sukanya, Guhathakurta, Puragra, Ilyin, Ilya V., Tauris, Thomas M.
We report discovery and characterization of a main-sequence G star orbiting a dark object with mass $1.90\pm 0.04 M_{\odot}$. The system was discovered via Gaia astrometry and has an orbital period of 731 days. We obtained multi-epoch RV follow-up ov
Externí odkaz:
http://arxiv.org/abs/2402.06722
Autor:
Feng, Yuting, Guhathakurta, Puragra, Peng, Eric W., Gwyn, Stephen D. J., Ferrarese, Laura, Côté, Patrick, Cuillandre, Jean-Charles, Munsell, Jeffrey, Talukdar, Manjima
RR Lyrae stars are standard candles with characteristic photometric variability and serve as powerful tracers of Galactic structure, substructure, accretion history, and dark matter content. Here we report the discovery of distant RR Lyrae stars, inc
Externí odkaz:
http://arxiv.org/abs/2402.05418