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This profile was last updated on 9/3/15  and contains information from public web pages.

Professor Emeritus

Phone: (604) ***-****  HQ Phone
2366 Main Mall (New Lab Extension)
Vancouver , British Columbia V6T 1Z4

Company Description: The University of British Columbia, established in 1908, educates a student population of 50,000 on major campuses in two cities and holds an international...   more

Employment History

27 Total References
Web References
Astronomy and Astrophysics at the University of British Columbia, 3 Sept 2015 [cached]
Philip Gregory Professor Emeritus
University of British Columbia ..., 20 July 2014 [cached]
University of British Columbia researcher Phil Gregory said that astronomers may pay more attention to all indicators of a star's activity, even if it "sadly removes a potentially interesting planet near the habitable zone."
This group, led by Philip ..., 5 Dec 2013 [cached]
This group, led by Philip Gregory of the University of British Columbia, also couldn't find a signal indicating Gliese 581g exists.
The first clear hints of a ..., 27 June 2013 [cached]
The first clear hints of a large multiplanet system around Gliese 667 C emerged last year, through the work of Philip Gregory, an astronomer at the University of British Columbia in Vancouver. Gregory was analyzing public data from the European Southern Observatory's HARPS spectrograph, a world-class planet-hunting instrument in La Silla, Chile. He noticed several previously unreported, potentially planetary wobbles, including one that looked like a 2.5-Earth-mass planet in a 39-day orbit-that is, another rocky planet within the star's habitable zone in addition to the already discovered-Gliese 667 C c. Gregory wrote up his findings and submitted them to a journal, but he stopped just short of claiming that he had found new planets.
As Gregory wrote his paper, Anglada and his colleagues were also glimpsing the wobbly evidence of Gliese 667 C's wealth of worlds by combining the HARPS measurements with data from two other telescopes. They analyzed the combined data using two independent and distinct statistical methods. Both methods strongly supported the presence of the two previously announced planets as well as three "new" planets with orbits and masses essentially identical to what Gregory reported in 2012. One of the two methods also found tentative evidence for two additional small planets, one in a hot 17-day orbit and another in a frigid 256-day orbit. Several rounds of further simulations only increased their confidence the planets were real.
Gregory praises the group's work as "a very significant step forward," and notes that although his paper "served to draw attention to the possibility of multiple planets in the habitable zone," the Anglada study contains "more definitive results."
CITA Visitors, 21 Aug 2012 [cached]
Phil Gregory - University of British Columbia
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