Zobrazeno 1 - 10
of 816
pro vyhledávání: '"Mcdonald, Iain"'
Autor:
Abdollahi, Hedieh, Javadi, Atefeh, van Loon, Jacco Th., McDonald, Iain, Abdollahi, Mahdi, Saremi, Elham, Khosroshahi, Habib G., Mahani, Hamidreza
We conducted an extensive study of the spheroidal dwarf satellite galaxies around the Andromeda galaxy to produce an extensive catalog of LPV stars. The optical monitoring project consists of 55 dwarf galaxies and four globular clusters that are memb
Externí odkaz:
http://arxiv.org/abs/2412.00790
Autor:
Cody, Sean Enis, Scher, Sebastian, McDonald, Iain, Zijlstra, Albert, Alexander, Emma, Cox, Nick L. J.
Publikováno v:
Open Research Europe 4, no. 29 (2024): 29
Identifying stars belonging to different classes is vital in order to build up statistical samples of different phases and pathways of stellar evolution. In the era of surveys covering billions of stars, an automated method of identifying these class
Externí odkaz:
http://arxiv.org/abs/2410.22869
Autor:
Kuchar, T. A., Sloan, G. C., Mizuno, D. R., Kraemer, Kathleen E., Boyer, M. L., Groenewegen, Martin A. T., Jones, O. C., Kemper, F., McDonald, Iain, Oliveira, Joana M., Sewiło, Marta, Srinivasan, Sundar, van Loon, Jacco Th., Zijlstra, Albert
Publikováno v:
AJ 167 149 (2024)
We present point-source photometry from the Spitzer Space Telescope's final survey of the Small Magellanic Cloud (SMC). We mapped 30 square degrees in two epochs in 2017, with the second extending to early 2018 at 3.6 and 4.5 microns using the Infrar
Externí odkaz:
http://arxiv.org/abs/2403.06755
Autor:
McDonald, Iain, Zijlstra, Albert A., Cox, Nick L. J., Alexander, Emma L., Csukai, Alexander, Ramkumar, Ria, Hollings, Alexander
Stellar atmosphere modelling predicts the luminosity and temperature of a star, together with parameters such as the effective gravity and the metallicity, by reproducing the observed spectral energy distribution. Most observational data comes from p
Externí odkaz:
http://arxiv.org/abs/2402.12496
Autor:
Kerins, Eamonn, Bachelet, Etienne, Beaulieu, Jean-Philippe, Bozza, Valerio, McDonald, Iain, Penny, Matthew, Ranc, Clement, Rhodes, Jason, Osorio, Maria Rosa Zapatero
The ESA Euclid mission is scheduled to launch on July 1st 2023. This White Paper discusses how Euclid observations of the Galactic Bulge Time Domain Survey (GBTDS) area could dramatically enhance the exoplanet science output of the Nancy Grace Roman
Externí odkaz:
http://arxiv.org/abs/2306.10210
Autor:
Wilson, Robert F., Barclay, Thomas, Powell, Brian P., Schlieder, Joshua, Hedges, Christina, Montet, Benjamin T., Quintana, Elisa, McDonald, Iain, Penny, Matthew T., Espinoza, Nestor, Kerins, Eamonn
The Nancy Grace Roman Space Telescope (Roman) is NASA's next astrophysics flagship mission, expected to launch in late 2026. As one of Roman's core community science surveys, the Galactic Bulge Time Domain Survey (GBTDS) will collect photometric and
Externí odkaz:
http://arxiv.org/abs/2305.16204
Autor:
A-thano, Napaporn, Awiphan, Supachai, Jiang, Ing-Guey, Kerins, Eamonn, Priyadarshi, Akshay, McDonald, Iain, Joshi, Yogesh C., Chulikorn, Thansuda, Hayes, Joshua J. C., Charles, Stephen, Huang, Chung-Kai, Rattanamala, Ronnakrit, Yeh, Li-Chin, Dhillon, Vik S
We present the transit timing variation (TTV) and planetary atmosphere analysis of the Neptune-mass planet HAT-P-26~b. We present a new set of 13 transit light curves from optical ground-based observations and combine them with light curves from the
Externí odkaz:
http://arxiv.org/abs/2303.03610
Autor:
Abdollahi, Hedieh, Javadi, Atefeh, Mirtorabi, Mohammad Taghi, Saremi, Elham, van Loon, Jacco Th., Khosroshahi, Habib G., McDonald, Iain, Khalouei, Elahe, Mahani, Hamidreza, Aghdam, Sima Taefi, Saberi, Maryam, Torki, Maryam
We present a photometric study of the resolved stellar populations in And IX, the closest satellite to the M31, a metal-poor and low-mass dwarf spheroidal galaxy. We estimate a distance modulus of $24.56_{-0.15}^{+0.05}$ mag based on the tip of the r
Externí odkaz:
http://arxiv.org/abs/2302.07674
Autor:
Abdollahi, Hedieh, Javadi, Atefeh, Mirtorabi, Mohammad Taghi, Saremi, Elham, Khosroshahi, Habib, van Loon, Jacco Th., McDonald, Iain, Khalouei, Elahe, Aghdam, Sima T., Saberi, Maryam
Local Group (LG), the nearest and most complete galactic environment, provides valuable information on the formation and evolution of the Universe. Studying galaxies of different sizes, morphologies, and ages can provide this information. For this pu
Externí odkaz:
http://arxiv.org/abs/2302.07599
Autor:
De Marco, Orsola, Akashi, Muhammad, Akras, Stavros, Alcolea, Javier, Aleman, Isabel, Amram, Philippe, Balick, Bruce, De Beck, Elvire, Blackman, Eric G., Boffin, Henri M. J., Boumis, Panos, Bublitz, Jesse, Bucciarelli, Beatrice, Bujarrabal, Valentin, Cami, Jan, Chornay, Nicholas, Chu, You-Hua, Corradi, Romano L. M., Frank, Adam, Garcia-Segura, Guillermo, Garcia-Hernandez, D. A., Garcia-Rojas, Jorge, Gomez-Llanos, Veronica, Goncalves, Denise R., Guerrero, Martin A., Jones, David, Karakas, Amanda I., Kastner, Joel H., Kwok, Sun, Lykou, Foteini, Manchado, Arturo, Matsuura, Mikako, McDonald, Iain, Monreal-Ibero, Ana, Monteiro, Hektor, Baez, Paula Moraga, Morisset, Christophe, Miszalski, Brent, Mohamed, Shazrene S., Montez Jr., Rodolfo, Nordhaus, Jason, de Oliveira, Claudia Mendes, Osborn, Zara, Otsuka, Masaaki, Parker, Quentin A., Peeters, Els, Quint, Bruno C., Quintana-Lacaci, Guillermo, Redman, Matt, Ruiter, Ashley J., Sabin, Laurence, Contreras, Carmen Sanchez, Santander-Garcia, Miguel, Seitenzahl, Ivo, Sahai, Raghvendra, Soker, Noam, Speck, Angela K., Stanghellini, Letizia, Steffen, Wolfgang, Toala, Jesus A., Ueta, Toshiya, Van de Steene, Griet, Villaver, Eva, Ventura, Paolo, Vlemmings, Wouter, Walsh, Jeremy R., Wesson, Roger, van Winckel, Hans, Zijlstra, Albert A.
Publikováno v:
Nature Astronomy, 2022, Vol. 6, p. 1421
Planetary nebulae (PNe), the ejected envelopes of red giant stars, provide us with a history of the last, mass-losing phases of 90 percent of stars initially more massive than the Sun. Here, we analyse James Webb Space Telescope (JWST) Early Release
Externí odkaz:
http://arxiv.org/abs/2301.02775