A near-infrared interferometric survey of debris-disc stars

Autor: Nuñez, P. D., Scott, N. J., Mennesson, B., Absil, O., Augereau, J.-C., Bryden, G., ten Brummelaar, T., Ertel, S., Coudé du Foresto, V., Ridgway, S. T., Sturmann, J., Sturmann, L., Turner, N. J., Turner, N. H.

We report the results of high-angular-resolution observations that search for exozodiacal light in a sample of main sequence stars and sub-giants. Using the "jouvence" of the fiber linked unit for optical recombination (JouFLU) at the center for high

Externí odkaz: http://hdl.handle.net/10150/626407
http://arizona.openrepository.com/arizona/handle/10150/626407

NULLING DATA REDUCTION AND ON-SKY PERFORMANCE OF THE LARGE BINOCULAR TELESCOPE INTERFEROMETER

Autor: Defrère, D., Hinz, P. M., Mennesson, B., Hoffmann, W. F., Millan-Gabet, R., Skemer, A. J., Bailey, V., Danchi, W. C., Downey, E. C., Durney, O., Grenz, P., Hill, J. M., McMahon, T. J., Montoya, M., Spalding, E., Vaz, A., Absil, O., Arbo, P., Bailey, H., Brusa, G., Bryden, G., Esposito, S., Gaspar, A., Haniff, C. A., Kennedy, G. M., Leisenring, J. M., Marion, L., Nowak, M., Pinna, E., Powell, K., Puglisi, A., Rieke, G., Roberge, A., Serabyn, E., Sosa, R., Stapeldfeldt, K., Su, K., Weinberger, A. J., Wyatt, M. C.

The Large Binocular Telescope Interferometer (LBTI) is a versatile instrument designed for high angular resolution and high-contrast infrared imaging (1.5-13 mu m). In this paper, we focus on the mid-infrared (8-13 mu m) nulling mode and present its

Externí odkaz: http://hdl.handle.net/10150/621383
http://arizona.openrepository.com/arizona/handle/10150/621383

Precision measurement of a brown dwarf mass in a binary system in the microlensing event OGLE-2019-BLG-0033/MOA-2019-BLG-035

Autor: Herald, A., Udalski, A., Bozza, V., Rota, P., Bond, I. A., Yee, J. C., Sajadian, S., Mroz, P., Poleski, R., Skowron, J., Szymanski, M. K., Soszynski, I., Pietrukowicz, P., Kozlowski, S., Ulaczyk, K., Rybicki, K. A., Iwanek, P., Wrona, M., Gromadzki, M., Abe, F., Barry, R., Bennett, D. P., Bhattacharya, A., Fukui, A., Fujii, H., Hirao, Y., Itow, Y., Kirikawa, R., Kondo, I., Koshimoto, N., Matsubara, Y., Matsumoto, S., Miyazaki, S., Muraki, Y., Olmschenk, G., Ranc, C., Okamura, A., Rattenbury, N. J., Satoh, Y., Sumi, T., Suzuki, D., Silva, S. Ishitani, Toda, T., Tristram, P. J., Vandorou, A., Yama, H., Beichman, C. A., Bryden, G., Novati, S. Calchi, Carey, S., Gaudi, B. S., Gould, A., Henderson, C. B., Johnson, S., Shvartzvald, Y., Zhu, W., Dominik, M., Hundertmark, M., Jorgensen, U. G., Longa-Pena, P., Skottfelt, J., Tregloan-Reed, J., Bach-Moller, N., Burgdorf, M., D'Ago, G., Haikala, L., Hitchcock, J., Khalouei, E., Peixinho, N., Rahvar, S., Snodgrass, C., Southworth, J., Spyratos, P., Zang, W., Yang, H., Mao, S., Bachelet, E., Maoz, D., Street, R. A., Tsapras, Y., Christie, G. W., Cooper, T., de Almeida, L., Nascimento Jr, J. -D. do, Green, J., Han, C., Hennerley, S., Marmont, A., McCormick, J., Monard, L. A. G., Natusch, T., Pogge, R.

Publikováno v: A&A 663, A100 (2022)

Context. Brown dwarfs are poorly understood transition objects between stars and planets, with several competing mechanisms having been proposed for their formation. Mass measurements are generally difficult for isolated objects but also for brown dw

Externí odkaz: http://arxiv.org/abs/2203.04034

OGLE-2018-BLG-1185b : A Low-Mass Microlensing Planet Orbiting a Low-Mass Dwarf

Autor: Kondo, Iona, Yee, Jennifer C., Bennett, David P., Sumi, Takahiro, Koshimoto, Naoki, Bond, Ian A., Gould, Andrew, Udalski, Andrzej, Shvartzvald, Yossi, Jung, Youn Kil, Zang, Weicheng, Bozza, Valerio, Bachelet, Etienne, Hundertmark, Markus P. G., Rattenbury, Nicholas J., Abe, F., Barry, R., Bhattacharya, A., Donachie, M., Fukui, A., Fujii, H., Hirao, Y., Silva, S. Ishitani, Itow, Y., Kirikawa, R., Li, M. C. A., Matsubara, Y., Miyazaki, S., Muraki, Y., Olmschenk, G., Ranc, C., Satoh, Y., Shoji, H., Suzuki, D., Tanaka, Y., Tristram, P. J., Yamawaki, T., Yonehara, A., Mróz, P., Poleski, R., Skowron, J., Szymański, M. K., Soszyński, I., Kozłowski, S., Ulaczyk, P. Pietrukowicz K., Rybicki, K. A., Iwanek, P., Wrona, M., Albrow, M. D., Chung, S. -J., Han, C., Hwang, K. -H., Kim, H. -W., Shin, I. -G., Cha, S. -M., Kim, D. -J., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W., Ryu, Y. -H., Beichman, C. A., Bryden, G., Novati, S. Calchi, Carey, S., Gaudi, B. S., Henderson, C. B., Zhu, W., Maoz, D., Penny, M. T., Dominik, M., Jørgensen, U. G., n}}a, P. Longa-Pe{\~{, Peixinho, N., Sajadian, S., Skottfelt, J., Snodgrass, C., Tregloan-Reed, J., Burgdorf, M. J., Campbell-White, J., Dib, S., Fujii, Y. I., Hinse, T. C., Khalouei, E., Rahvar, S., Rabus, M., Southworth, J., Tsapras, Y., Street, R. A., Bramich, D. M., Cassan, A., Horne, K., Wambsganss, J., Mao, S., Saha, A.

We report the analysis of planetary microlensing event OGLE-2018-BLG-1185, which was observed by a large number of ground-based telescopes and by the $Spitzer$ Space Telescope. The ground-based light curve indicates a low planet-host star mass ratio

Externí odkaz: http://arxiv.org/abs/2104.02157

Is there really a debris disc around $\zeta^2\,\mathrm{Reticuli}$ ?

Autor: Faramaz, V., Bryden, G., Stapelfeldt, K. R., Booth, M., Bayo, A., Beust, H., Casassus, S., Cuadra, J., Hales, A., Hughes, A. M., Olofsson, J., Su, K. Y. L., Wilner, D. J.

Publikováno v: Monthly Notices of the Royal Astronomical Society, Volume 481, Issue 1, 21 November 2018, Pages 44-48

The presence of a debris disc around the Gyr-old solar-type star $\zeta^2\,\mathrm{Reticuli}$ was suggested by the $\mathit{Spitzer}$ infrared excess detection. Follow-up observations with $\mathit{Herschel}$/PACS revealed a double-lobed feature, tha

Externí odkaz: http://arxiv.org/abs/1809.00645