The structure of the nuclear stellar cluster of the Milky Way

By R. Schödel, A. Eckart, T. Alexander, D. Merritt, R. Genzel, A. Sternberg, L. Meyer, F. Kul, J. Moultaka, T. Ott and 1 more. Proceedings of the International Astronomical Union, 2006

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Abstract High-resolution adaptive optics observations of the inner 0.5 pc of the Milky Way with multiple intermediate band filters are presented. From the images, stellar number counts and a detailed map of the interstellar extinction were extracted. The extinction map is consistent with a putative southwest-northeast aligned outflow from the central arcseconds. An azimuthally averaged, crowding and extinction corrected stellar density profile presents clear evidence for the existence of a stellar cusp around Sgr A*. Several density peaks are found in the cluster that may indicate clumping of stars, possibly related to the last epoch of star formation in the Galactic Center. An analysis of stars in the brightness range 14.25 < magK < 15.75 shows possible signs of mass segregation.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/99e072bf59d31aefdc112517ddfb4ebbab28080e

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Citations in the corpus

CO-EVOLUTION OF GALACTIC NUCLEI AND GLOBULAR CLUSTER SYSTEMS (2013, background): “Both values are within a factor of two of the density of the Galactic NSC (Schödel et al. 2007; Oh et al. 2009), which we consider to be excellent agreement given the modeling and observational uncertainties.”
Galactic Searches for Dark Matter (2012, background): “7 for larger radii (Schödel et al., 2007).”
MONITORING STELLAR ORBITS AROUND THE MASSIVE BLACK HOLE IN THE GALACTIC CENTER (2008, methodology): “We obtain n(r) ∼ r−1.1±0.3, consistent with the mass profile in Genzel et al. (2003b) who found ρ(r) ∼ r−1.4 and with the newer work in Schödel et al. (2007) who found ρ(r) ∼ r−1.2 for the innermost region of the cusp.”
Peering through the veil: near-infrared photometry and extinction for the Galactic nuclear star cluster (2009, methodology): “10 of Schödel et al. (2007a).”
AN EXTREMELY TOP-HEAVY INITIAL MASS FUNCTION IN THE GALACTIC CENTER STELLAR DISKS (2009, background): “…section, in combination with the results presented in recent published work (Genzel et al. 2003; Eisenhauer et al. 2005; Nayakshin & Sunyaev 2005; Schödel et al. 2007; Paumard et al. 2006; Lu et al. 2009; Bartko et al. 2009; Gillessen et al. 2009; Buchholz et al. 2009; Do et al. 2009) yield the…”
DISSIPATIONLESS FORMATION AND EVOLUTION OF THE MILKY WAY NUCLEAR STAR CLUSTER (2011, background): “The Milky Way NSC is close enough that its radial and kinematical structure can be resolved (Schödel et al. 2007; Schödel et al. 2009).”
HIGH ANGULAR RESOLUTION INTEGRAL-FIELD SPECTROSCOPY OF THE GALAXY'S NUCLEAR CLUSTER: A MISSING STELLAR CUSP? (2009, methodology): “We find that Γimaging = 0.19±0.06, comparable to that found by Schödel et al. (2007) using only number counts.”