Zobrazeno 1 - 4
of 4
pro vyhledávání: '"John Della Costa"'
Autor:
William A. Burris, Carl Melis, Allen W. Shafter, Georgia V. Panopoulou, E. L. Wright, John Della Costa
Publikováno v:
The Astronomical Journal, Vol 166, Iss 2, p 40 (2023)
We present optical and infrared imaging and spectroscopy of the R Coronae Borealis-type (R Cor Bor) star IRAS 00450+7401. Optical spectra further confirm its classification as a cool R Cor Bor system, having a hydrogen-deficient carbon star spectral
Externí odkaz:
https://doaj.org/article/f86c9e3551bd4728b6c408564ccb9d22
Autor:
Allen W. Shafter, Kamil Hornoch, Hana Kučáková, Jingyuan Zhao, Mi Zhang, Xing Gao, John Della Costa, William A. Burris, J. Grace Clark, Marek Wolf, Petr Zasche
The M31 recurrent nova M31N 1926-07c has had five recorded eruptions. Well-sampled light curves of the two most recent outbursts, in January of 2020 (M31N 2020-01b) and September 2022 (M31N 2022-09a), are presented showing that the photometric evolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa5c7a78963648bebb0bbf25c05d4350
We present a long temporal baseline variability survey in the Frontier Field MACSJ1149. In this study, we identify active galactic nuclei (AGNs) and other transient sources via their variability using over a decade of Hubble Space Telescope (HST) ima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22fbfddda5e65537fa11541f240a2f14
Publikováno v:
Astrophysical Journal; May2020, Vol. 894 Issue 1, p1-13, 13p