Zobrazeno 1 - 10
of 244
pro vyhledávání: '"Peter M. Garnavich"'
Autor:
Mark Kennedy, Paula Szkody, Sergey Yu. Shugarov, Alexsei A. Sosnovskij, John Morales, Elena P. Pavlenko, Robert Schwarz, Gordon Myers, Julia V. Babina, Peter M. Garnavich, Paul A. Mason, Maksim V. Andreev, Oksana I. Antonyuk, Colin Littlefield
Publikováno v:
Advances in Space Research. 66:1123-1138
We present a time-series analysis of the asynchronous polar CD Ind, using fast cadence TESS photometry. A similar analysis is performed using ground based photometry of BY Cam. These asynchronous polars show remarkably similar light curves and enigma
Autor:
Edward J. Shaya, B. E. Tucker, R. Ridden-harper, Geert Barentsen, Peter M. Garnavich, Armin Rest, Michael Gully-Santiago
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:33-43
The K2 mission of the Kepler Space Telescope offers a unique possibility to examine sources of both Galactic and Extra-galactic origin with high cadence photometry. Alongside the multitude of supernovae and quasars detected within targeted galaxies,
Autor:
R. Brent Tully, John Blakeslee, Michele Cantiello, John R. Lucey, Charlotte M. Wood, Joseph B. Jensen, Anh Phan, Peter M. Garnavich, Chung-Pei Ma, Peter J. Brown, Peter A. Milne, Jenny E. Greene
Publikováno v:
The Astrophysical Journal Supplement Series, 2021, Vol.255(2), pp.21 [Peer Reviewed Journal]
We measured high-quality surface brightness fluctuation (SBF) distances for a sample of 63 massive early-type galaxies using the WFC3/IR camera on the Hubble Space Telescope. The median uncertainty on the SBF distance measurements is 0.085 mag, or 3.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b84b03619f875a05cc895bf2ea2feecf
http://arxiv.org/abs/2105.08299
http://arxiv.org/abs/2105.08299
Autor:
Paula Szkody, Amruta Jaodand, Peter M. Garnavich, Colin Littlefield, Robert Wagner, Jan van Roestel, John R. Thorstensen
For decades, AE Aquarii (AE Aqr) has been the only cataclysmic variable star known to contain a magnetic propeller: a persistent outflow whose expulsion from the binary is powered by the spin-down of the rapidly rotating, magnetized white dwarf. In 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb1efd0b931cfc96bba7061507427759
Autor:
Colin Littlefield, Krystian Iłkiewicz, Simone Scaringi, Paul A. Mason, Peter M. Garnavich, Mark Kennedy, Paula Szkody
Publikováno v:
The Astronomical Journal, 2021, Vol.162(2), pp.49 [Peer Reviewed Journal]
One of the fundamental properties of an intermediate polar is the dynamical nature of the accretion flow as it encounters the white dwarf's magnetosphere. Many works have presumed a dichotomy between disk-fed accretion, in which the WD accretes from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6e093166f157cfb79b0b6db0ced5caf
Autor:
M Neric, T. R. Marsh, Mark Kennedy, T Augusteijn, Richard Ashley, Rene P. Breton, Colin Littlefield, Paul J. Callanan, Peter M. Garnavich, R. M. Wagner
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Between May 2016 and September 2018, the intermediate polar (IP) FO Aquarii exhibited two distinct low states and one failed low state. We present optical spectroscopy of FO Aquarii throughout this period, making this the first detailed study of an a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::feeb5f59b9d5ce05343bd5f5a5649242
http://arxiv.org/abs/2005.09656
http://arxiv.org/abs/2005.09656
We analyze rapid-cadence, multiwavelength photometry of AR Scorpii from three observatories, covering five observing seasons. We measure the arrival times of the system's beat pulses and use them to compute an updated ephemeris. The white dwarf spin-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67df60cd1606fc6dbc2b98a75751aeab
Autor:
Armin Rest, Edward J. Shaya, Brad E. Tucker, Christina Hedges, Michael Gully-Santiago, Colin Littlefield, S. Margheim, R. Ridden-harper, G Barensten, Peter M. Garnavich
We identify a new, bright transient in the Kepler/K2 Campaign 11 field. Its light curve rises over seven magnitudes in a day and then declines three magnitudes over a month before quickly fading another two magnitudes. The transient was still detecta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::290850642f2e36bffcc47a960d66f471
Portions of the Kepler K2 Short Cadence light curve of the dwarf nova (DN) TW Vir at quiescence are investigated using light curve modeling. The light curve was separated into 24 sections, each with a data length of $\sim\,$0.93\,d, comprising 4 sect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8cb58ccbe338f8a912004f3800b96af
Publikováno v:
Research Notes of the AAS. 5:242
We obtained spectra of ASASSN-V J205543.90+240033.5 (J2055), a system that shows photometric variations similar to the white dwarf (WD) pulsar AR Scorpii (Kato et al. arXiv:2109.03979). Our spectra display a continuum rising steeply toward the blue a