GC Group Meetings

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Next Meeting: Thursday November 15, 1:00 pm

Date Speaker Title/Paper Reference
2012 Thursday November 15, 1:00pm Kim G2 Observations
2012 Monday November 5, 1:30pm Kim G2 Observations
2012 Friday October 19, 10:00amKim New Observations of the gas gloud G2 in the Galactic Center Murray-Clay and Loeb 2012
2012 Friday October 12, 10:00am Kim New Observations of the gas gloud G2 in the Galactic Center
G2 Discussion
Gillessen et al. 2012b
 
2012 Wednesday October 3, 2:00pm Sylvana Young Stars Paper
2012 Thursday September 27, 2:30pm Group PR associated with Science publication of S0-102
2012 Friday August 24, 11:00am Tuan
Group
G2 Discussion
Keck Proposals
2012 Thursday August 16, 1:00pm Tuan G2 Discussion
2012 Friday August 10, 10:30am Jessica IMF paper
2012 Friday August 9, 10:00am Tuan G2 Discussion
2012 Friday July 27, 3:00pm Sylvana Practice Defense Talk
2012 Friday July 13, 3:00pm Gunther Source-intrinsic near-infrared properties of Sgr A*: Total intensity measurementsWitzel et al. 2012
2010 Friday August 27, 3:30pm Volunteer (TBD) Cometary shaped sources at the Galactic Center; Evidence for a wind from the central 0.2 pc Muzic et al. 2010
2010 Friday August 19, 3:30pm Group Progress Update
2010 Friday August 06, 3:30pm Volunteer (TBD) Resonant relaxation and the warp of the stellar disc in the Galactic centreKocsis & Tremaine 2010
2010 Friday July 30, 3:30pm Group Progress Update (observing)
2010 Friday July 23, 3:00pm Will Clarkson Arches Central field: dispersion paperCurrent version
2010 Friday July 16, 3:30pm Group Progress Update
<2010 Friday July 9, 3:30pm Andy Stolte Internal dynamics and membership of the NGC 3603 young cluster from microarcsecond astrometryPostponedRochau et al. 2010
2010 Tuesday June 29, 1pmGroup Observation planning and progress Update
2010 Friday June 25, 11:00amHendrik Bartko (Max Planck Institut) The Power of Precision: Stellar orbits around Sgr A*Visitor talk
2010 Thursday June 17, 3:30pmGroup Progress Update
2010 Friday June 11Will Clarkson High-precision astrometry with MICADO at the European Extremely Large TelescopeTrippe et al. 2010 MNRAS
2010 Friday May 21Andrea Ghez The origin of S-Stars and a young stellar disk: distribution of debris stars of a sinking star clusterFujii et al. ApJL submitted
2010 Friday May 7 - No regular meeting - observing
2010 Friday April 30, 2pmAndrea Ghez The origin of S-Stars and a young stellar disk: distribution of debris stars of a sinking star cluster (Canceled)Fujii et al. ApJL submitted
2010 Friday April 23 at 3:30pm Sylvana Yelda Constraining the initial mass function of stars in the Galactic CentreLoeckmann, Baumgardt, and Kroupa MNRAS 2010
2010 Friday April 16th, 3pm Group Observation planning - II
2010 Tuesday April 13th at 3pmJessica Lu GC-IRS13E - An association of three puzzling early-type starsFritz et al. 2010 ApJ Submitted
2010 Tuesday April 13th, 10:00am, Remote ops room Tuan Do & Sylvana Yelda Tech Meeting:
Align - weighting and astrometry - II
2010 Tuesday April 6th at 3pm Mark Morris Discovery of a superluminal Fe K echo at the Galactic Center: The glorious past of Sgr A* preserved by molecular cloudsPonti et al. 2010 ApJ in press
2010 Monday April 5th, 1pm Tuan Do & Sylvana Yelda Tech Meeting:Align - weighting and astrometry
2010 Friday April 2nd 11amWill Clarkson What is limiting near-infrared astrometry in the Galactic Centre?Fritz et al. 2009 MNRAS
2010 Thursday April 1st. Observation planning - I
2010 Friday March 26th - No meeting
2010 Friday March 19th Tuan Do Near infrared flares of Sagittarius A*; Importance of near infrared polarimetry
Zamaninasab et al. 2010 accepted
2010 Friday March 12th - No meeting -- 2010B Keck deadline
2010 Friday March 5th, 3pmJessica Lu A Universal Stellar Initial Mass Function? A Critical Look at Variations Bastian, Covey & Meyer 2010 ARA&A in press
(Sections 1, 2 and 5.2 will be discussed.)
2010 Tuesday Feb 23, 10amTuan Do HST ProposalVersion as of 12th Feb
2010 Friday Feb 19thMark Morris A lower limit of 50 microgauss for the magnetic field near the Galactic CentreCrocker et al. 2010 Nature
Supplemental information
11:00am
2010 Friday Feb 5th
Betsy Mills Sgr B2 and the distance to the galactic centerRyu et al. 2009 PASP
Reid et al. 2009 ApJ
9:30am Weds Dec 16Matt Malkan Analysing the innermost dust in Seyfert nuclei with the Keck Interferometer; the peculiar case of NGC 4151Pott et al. 2010 in prep
2009 Friday Dec 04 10:30amMark Morris YSOs in the GC environment
An et al. 2009c
2009 Tues 3pm Dec 01Sylvana Yelda Tech Meeting
NIRC2 Distortion II - revenge of the deltas
Yelda et al. 2009 latest version
2009 Tues 3pm Nov 24Sylvana Yelda Tech Meeting
NIRC2 Distortion
Yelda et al. 2009 latest version
2009 10am, Weds Nov 18Tuan DoThe IMF in the galactic centerBartko et al. 2009b
2009 3pm, Thurs Oct 15Tuan Do and Sylvana YeldaShanghai Practice Talks
2009 1pm, Thur Oct 8Clifford Will, Washington University, St. LouisCosmic Barbery: Counting the Hairs on the Head of a Black Hole
2009 Oct 2Sylvana YeldaAn improved distortion solution for Keck/NIRC2 Yelda et al. 2009 in final prep
2009 Fri Sep 25, 3:30pmWill ClarksonTechnical Meeting
Accurate photometry with AO in the presence of anisoplanatic effects with a sparsely sampled PSF -- The Galactic center as example of a challenging target for accurate AO photometry
Schoedel et al. 2009c in prep
2009 Tues Sep 22, 2:30pm Quinn Konopacky High Precision Dynamical Masses of Very Low Mass Binaries Konopacky et al. 2009
2009 Sep 01, 2:30pmAndrea GhezWhat and How to observe with Keck (deadline: september 11)Ghez et al. 2009 Keck prop in prep
2009 Aug 28 Tuan Do Extinction Map of the Galactic Center region Schodel et al. 2009b in prep (UPDATED)
2009 Aug 18 Tues 3pmKim Phifer Investigation of the open orbit of S0-2 at the Galactic Center: Unseen companion to the Galaxy's central black hole or imperfect reference frame? Summer undergraduate research program: practice talk
2009 Aug 14 Kim Phifer Influence of a stellar cusp on the dynamics of young stellar discs and the origin of the S-stars in the Galactic Centre Lockmann, Baumgardt and Kroupa 2009 MNRAS accepted
2009 Aug 7 Will Clarkson The massive star initial mass function of the Arches cluster Espinoza et al. 2009
2009 Thurs July 30 Marshall Perrin Unraveling the Innermost Regions of Transitional Disks with the Keck Interferometer Pott et al. 2009 submitted
2009 July 10 Sylvana Yelda A New Secular Instability of Eccentric Stellar Disks around Supermassive Black Holes, with Application to the Galactic Center Madigan, Levin & Hopman 2009
2009 June 19 Andrea Stolte The origin of large peculiar motions of star-forming regions and spiral structures of our Galaxy Baba et al. (2009)
2009 June 12 Mark Morris Dynamics of Ionized Gas at the Galactic Center: VLA Observations of the 3D Velocity Field and Location of the Ionized Streams in Sagittarius A West Zhao, Morris, Goss & An 2009
2009 June 1 Quinn Konopacky Gravitational fragmentation and the formation of brown dwarfs in stellar clusters Bonnell, Clark & Bate 2008
2009 May 15 Nate McCrady Evolution of Nuclear Star Clusters Merritt 2009
2009 Apr 23 Will Clarkson * The chemical abundances in the Galactic Centre from the atmospheres of Red Supergiants
* Chemical abundance patterns in the inner Galaxy: the Scutum Red Supergiant Clusters
Davies et al. 2009a and
Davies et al. 2009b
2009 Apr 10 Tuan Do Spectroscopic measurements of the structure of the Galaxy's nuclear cusp at high angular resolution Do et al. 2009
2009 Mar 30 Michal Bregman Accretion disk warping by resonant relaxation: The case of maser disk NGC 4258 Abstract
2009 Mar 20 Mark Morris Gas infall towards Sgr A* from the clumpy circumnuclear disk Montero-Castano et al. 2009
2009 Mar 6 Jessica Lu The warped young stellar disc in the Galactic Centre Subr et al. 2008
2009 Feb 27 Tuan Do The evolution of runaway stellar collision products Glebbeek et al. 2009
2009 Feb 13 Rainer Schoedel Composition of the galactic center star cluster: Population analysis from adaptive optics narrow band spectral energy distributions Bucholz, Schoedel & Eckart 2009
2009 Feb 6 Nate McCrady Star Formation Around Supermassive Black Holes Bonnell & Rice 2008
2009 Jan 23/26 Rainer Schoedel The nuclear star cluster of the Milky Way: Proper motions and mass Schoedel, Merritt & Eckart 2009 (revised version)
2009 Jan 16 Sylvana Yelda Explaining the Orbits of the Galactic Center S-Stars Merritt et al. 2008
2008 Dec 12 Jessica Lu Evidence for Warped Disks of Young Stars in the Galactic Center Bartko et al. 2008
2008 Dec 5 Leo Meyer A power-law break in the near-infrared power spectrum of the Galactic center black hole Meyer et al. 2008
2008 Nov 21 Andrea Ghez Monitoring stellar orbits around the Massive Black Hole in the Galactic Center Gillessen et al. 2008
2008 Nov 14 Betsy Mills Proper Motions in the Galactic Bulge: Plaut's Window Vieira et al. 2007
2008 Oct 24 Nate McCrady The Sizes and Luminosities of Massive Star Clusters Murray 2008
2008 Oct 10/17 Sylvana Yelda Kinematics of the old stellar population at the Galactic Center Trippe et al. 2008
2008 Oct 6 Tuan Do Strong mass segregation around a massive black hole Alexander & Hopman 2008
2008 Sep 26 Jörg-Uwe Pott The Mid-Infrared Extinction Law in the Ophiuchus, Perseus, and Serpens Molecular Clouds Chapman et al. 2008
2008 Aug 27 Leo Meyer Active Galactic Nuclei as scaled-up Galactic black holes McHardy et al. 2006
2008 Aug 15 Quinn Konopacky Dynamical mass of the Substellar Benchmark Binary HD 130948BC Dupuy et al. 2008
2008 Aug 8 Jörg-Uwe Pott Milliarcsecond angular resolution of reddened stellar sources in the vicinity of the Galactic Center Richichi et al. 2008
2008 July 25 Tuan Do The rotating Nuclear Star Cluster in NGC 4244 Seth et al. 2008
2008 July 18 Jessica Lu Massive Star Formation in the Molecular Ring Orbiting the Black Hole at the Galactic Center Yusef-Zadeh et al. 2008
2008 June 13 Betsy Mills The interplay between star formation and the nuclear environment of our Galaxy:deep X-ray observations of the Galactic centre Arches and Quintuplet clusters Wang, Dong, & Lang 2006, MNRAS, 371, 38
2008 June 6 Andy Stolte HKL excess sources in the Arches cluster Stolte et al. 2008, in prep.
2008 May 30 Phil Armitage Light Curves from an MHD Simulation of a Black Hole Accretion Disk Schnittman, Krolik, & Hawley 2006, ApJ, 651, 1031
2008 May 23 Jessica Lu On the Formation of Compact Stellar Disks Around Sgr A* Wardle & Yusef-Zadeh 2008, astro-ph/0805.3274
2008 May 9 Leo Meyer A 600 Minute Near-IR Lightcurve of Sgr A* Meyer et al. 2008
2008 Apr 18 Tuan Do The Near-Infrared Variability of Sgr A* Do et al. 2008
2008 Apr 8/11 Andy Stolte Star Formation across the Milky Way - a summary Santiago, Chile, March 3-7, 2008
2008 Apr 4 Guillaume Belanger Periodic variations from X-ray flares in Sgr A* Belanger et al. 2008
2008 Feb 29 Betsy Mills Tracing shocks and photodissociation in the Galactic center region Martin et al. 2008, astro-ph/0801.3614
2008 Feb 22 Andy Stolte Starburst clusters near the Galactic center review talk, Star formation across the Milky Way, Santiago, Chile
2008 Feb 15 Leo Meyer Testing the general relativistic no-hair theorems using the galactic center black hole SgrA* Will 2008, astro-ph/0711.1677
2008 Feb 8 S. Yelda/J. Lu Hyper velocity stars and S stars
2008 Jan 25 Sylvana Yelda Dynamical and evolutionary constraints on the nature and origin of hypervelocity stars Perets 2007, astro-ph/0712.1888
2008 Jan 18 Tuan Do On characterizing the variability properties of X-ray light curves from active galaxies Vaughan et al. 2003, MNRAS, 345, 127
2008 Jan 4 Quinn Konopacky Spectroscopic rotation velocities of L dwarfs from VLT/UVES and their comparison with periods from photometric monitoring Bailer-Jones 2004, A&A, 419, 703
2007 Dec 19 Jessica Lu A Measurement of Proper Motions of SiO Maser Sources in the Galactic Center with the VLBA Oyama et al. 2008, astro-ph/0710.1393
2007 Dec 7 Andy Stolte Testing the universal stellar IMF on the metallicity distribution in the bulges of the Milky Way and M31 Ballero, Kroupa & Matteucci 2007, A&A, 467, 117
2007 Nov 16 Nate McCrady Constraining the Adaptive Optics Point-Spread Function in Crowded Fields: Measuring Photometric Aperture Corrections Sheehy, McCrady & Graham 2006, ApJ, 647, 1517
2007 Nov 9 Elise Furlan Planet Formation around Stars of Various Masses: The Snow Line and the Frequency of Giant Planets Kennedy & Kenyon 2007, astro-ph/0710.1065
2007 Oct 26 Marshall Perrin The Spitzer c2d Survey of Weak-Line T Tauri Stars. II. New Constraints on the Timescale for Planet Building Cieza et al. 2007, ApJ, 667, 308
2007 Oct 12 Joerg-Uwe Pott Cosmic-Ray Heating of Molecular Gas in the Nuclear Disk: Low Star Formation Efficiency Yusef-Zadeh et al. 2007, ApJL, 665, 123
2007 Oct 5 Betsy Mills Implementing Few-Body Algorithmic Regularization with Post-Newtonian Terms Mikkola & Merritt 2007, astro-ph/0709.3367
2007 Sep 28 Sylvana Yelda High-precision stellar radial velocities in the galactic center Figer et al. 2003, ApJ, 599, 1139
2007 Sep 7 Tuan Do An Unambiguous Detection of Faraday Rotation in Sagittarius A* Marrone et al. 2007, ApJL, 654, 57
2007 Aug 31 Quinn Konopacky VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy Loinard et al. 2007, astro-ph/0708.2081
2007 Aug 20 Jessica Lu Galactic Center Youth: Orbits and Origins of the Young Stars Lu et al. 2007
2007 Aug 10 Betsy Mills The Origin of the Young Stars in the Nucleus of M31 Chang et al. 2007, ApJ, 668, 236
2007 Aug 3 Jessica Lu Orbital analysis discussion
2007 July 27 Jessica Lu First proper motions of thin dust filaments at the Galactic center Muzic et al. 2007, A&A, 469, 993
2007 July 13 Sylvana Yelda Kinematics of hypervelocity stars in the triaxial halo of the Milky Way Yu & Madau 2007, MNRAS, 379, 1293
2007 June 8 Wolfgang Brandner A Systematic Study of Departures from Chemical Equilibrium in the Atmospheres of Substellar Mass Objects Hubeny & Burrows 2007, ApJ, 669, 1248
2007 June 1 Tuan Do Near-infrared polarimetry setting constraints on the orbiting spot model for Sgr A* flares Meyer et al. 2006, A&A, 460, 15
2007 May 25 Quinn Konopacky paper review
2007 May 18 Jessica Lu Starbursts near supermassive black holes: young stars in the Galactic Centre, and gravitational waves in LISA band> Levin 2007, MNRAS, 374, 515
2007 May 8 Andrea Stolte Simulations of star formation in a gaseous disc around sgr A* - a failed AGN Nayakshin et al. 2007, MNRAS, 379, 21
2007 May 1 Elise Furlan Demographics of Transition Objects Najita et al. 2007, MNRAS, 378, 369
2007 Apr 23 Sylvana Yelda Massive perturber-driven interactions of stars with a massive black hole Perets et al. 2007, ApJ, 656, 709
2007 Apr 17 Tuan Do Stellar and wind properties of massive stars in the central parsec of the Galaxy Martins et al. 2007, A&A, 468, 233
2007 Apr 7 Jessica Lu Fuelling active galactic nuclei King & Pringle 2007, MNRAS Letters, 377, 25
2007 Mar 23 Quinn Konopacky Visual/infrared interferometry of Orion Trapezium stars: Preliminary dynamical orbit and aperture synthesis imaging of the Theta 1 Orionis C system Kraus et al. 2007, A&A, 466, 649
2007 Mar 16 Jon Mauerhan Discovery of hot supergiant stars near the Galactic center Mauerhan et al. 2007, ApJ, 662, 574
2007 Mar 2 Elise Furlan NACO polarimetric differential imaging of TW Hya. A sharp look at the closest T Tauri disk Apai et al. 2004, A&A, 415, 671
2007 Feb 13 Andy Stolte The proper motion of the Arches cluster with Keck Laser-Guide Star Adaptive Optics
2007 Feb 9 Stanimir Metchev The Planetary Mass Companion 2MASS1207-3932 B: Temperature, Mass and Evidence for an Edge-On Disk Mohanty et al. 2007, ApJ, 657, 1064
2007 Feb 2 Andy Stolte Where are the Old-Population High Velocity Stars? Kollmeier & Gould 2007, astro-ph/0701350
2007 Jan 26 Wolfgang Brandner Medium resolution 2.3 micron spectroscopy of the massive Galactic open cluster Westerlund 1 Mengel & Tacconi-Garman 2007, A&A, 466, 151
2006 Dec 8 Tuan Do The stellar mass spectrum in warm and dusty gas: deviations from Salpeter in the Galactic centre and in circumnuclear starburst regions Klessen et al. 2007, MNRAS Letters, 374, 29
2006 Dec 1 Claire Max Next-Generation Adaptive Optics at Keck: Potential Technologies and Science Cases
2006 Nov 15 Sylvana Yelda The hot stars in orbit around the M31 central supermassive black hole: are they young or old? Demarque & Virani 2006, A&A, 461, 651
2006 Nov 3 Jessica Lu The Stellar Populations in the Central Parsecs of Galactic Bulges Sarzi et al. 2005, ApJ, 628, 169
2006 Oct 27 Seth Hornstein Polarimetry of near-infrared flares from Sagittarius A* Eckart et al. 2006, A&A, 455, 1
2006 Oct 20 Elise Furlan Evidence for Mass-dependent Circumstellar Disk Evolution in the 5 Myr-old Upper Scorpius OB Association Carpenter et al. 2006, ApJL, 651, 49
2006 Oct 13 Andy Stolte The extrasolar planet epsilon Eridani b - orbit and mass Benedict et al. 2006, AJ, 132, 2206
2006 Oct 6 Andrea Ghez Prediction for the Frequency and Orbital Radii of Massive Extrasolar Planets Armitage et al. 2002, MNRAS, 334, 248
2006 Sep 29 Jimmy Dunn Active galactic nuclei jet mass loading and truncation by stellar winds Hubbard & Blackman 2006, MNRAS, 371, 1717
2006 Sep 22 Sylvana Yelda The Hypervelocity Star SDSS J090745.0+024507 is Variable Fuentes et al. 2006, ApJL, 636, 37
2006 Sep 1 Tuan Do The K-band Spectrum of The Hot Star in IRS~8: An Outsider in the Galactic Center? Geballe et al. 2006, ApJ, 652, 370
2006 Aug 25 Quinn Konopacky A mid-infrared study of very low mass stars and brown dwarfs in Upper Scorpius Bouy et al. 2006, A&A, 451, 177
2006 Aug 4 Hal Cambier The Fate of Former Companions to Hypervelocity Stars Originating at the Galactic Centre Ginsburg & Loeb 2006, MNRAS, 368, 221
2006 July 28 Jessica Lu Young stars in the Galactic Centre: a potential intermediate-mass star origin Dray et al. 2006, MNRAS, 372, 31
2006 July 13 Seth Hornstein Periodic Modulations in an X-ray Flare from Sagittarius A* Belanger et al. 2006, JPhCS, 54, 420
2006 June 22 Elise Furlan Silicate Emission Profiles from Low-Mass Protostellar Disks in the Orion Nebula: Evidence for Growth and Thermal Processing of Grains Shuping et al. 2006, ApJL, 644, 71

Currently maintained by: Kim Phifer (kphifer@astro.ucla.edu)