An extremely top-heavy initial mass function in the galactic center stellar disks

H Bartko; F Martins; S Trippe; T Fritz; Reinhard Genzel; T Ott; F Eisenhauer; Stefan Gillessen; T Paumard; T Alexander; K Dodd-Eden; O Gerhard; Yuri Levin; L Mascetti; S Nayakshin; H B Perets; G Perrin; Oliver Pfuhl; M Reid; D Rouan; M Zilka; A Sternberg

doi:10.1088/0004-637X/708/1/834

An extremely top-heavy initial mass function in the galactic center stellar disks

H Bartko, F Martins, S Trippe, T Fritz, Reinhard Genzel, T Ott, F Eisenhauer, Stefan Gillessen, T Paumard, T Alexander, K Dodd-Eden, O Gerhard, Yuri Levin, L Mascetti, S Nayakshin, H B Perets, G Perrin, Oliver Pfuhl, M Reid, D RouanM Zilka, A Sternberg

Research output: Contribution to journal › Article › Research › peer-review

255 Citations (Scopus)

Abstract

We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the spectroscopic detection of early- and late-type stars to mK a?Y 16, more than 2 mag deeper than our previous data sets. Our observations result in a total sample of 177 bona fide early-type stars. We find that most of these Wolf Rayet (WR), O-, and B-stars reside in two strongly warped disks between 08 and 12a?? from Sgr A*, as well as a central compact concentration (the S-star cluster) centered on Sgr A*.

Original language	English
Pages (from-to)	834 - 840
Number of pages	7
Journal	The Astrophysical Journal
Volume	708
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/708/1/834
Publication status	Published - 2010
Externally published	Yes

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Bartko, H., Martins, F., Trippe, S., Fritz, T., Genzel, R., Ott, T., Eisenhauer, F., Gillessen, S., Paumard, T., Alexander, T., Dodd-Eden, K., Gerhard, O., Levin, Y., Mascetti, L., Nayakshin, S., Perets, H. B., Perrin, G., Pfuhl, O., Reid, M., ... Sternberg, A. (2010). An extremely top-heavy initial mass function in the galactic center stellar disks. The Astrophysical Journal, 708(1), 834 - 840. https://doi.org/10.1088/0004-637X/708/1/834

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title = "An extremely top-heavy initial mass function in the galactic center stellar disks",

abstract = "We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the spectroscopic detection of early- and late-type stars to mK a?Y 16, more than 2 mag deeper than our previous data sets. Our observations result in a total sample of 177 bona fide early-type stars. We find that most of these Wolf Rayet (WR), O-, and B-stars reside in two strongly warped disks between 08 and 12a?? from Sgr A*, as well as a central compact concentration (the S-star cluster) centered on Sgr A*.",

author = "H Bartko and F Martins and S Trippe and T Fritz and Reinhard Genzel and T Ott and F Eisenhauer and Stefan Gillessen and T Paumard and T Alexander and K Dodd-Eden and O Gerhard and Yuri Levin and L Mascetti and S Nayakshin and Perets, {H B} and G Perrin and Oliver Pfuhl and M Reid and D Rouan and M Zilka and A Sternberg",

year = "2010",

doi = "10.1088/0004-637X/708/1/834",

language = "English",

volume = "708",

pages = "834 -- 840",

journal = "The Astrophysical Journal",

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Bartko, H, Martins, F, Trippe, S, Fritz, T, Genzel, R, Ott, T, Eisenhauer, F, Gillessen, S, Paumard, T, Alexander, T, Dodd-Eden, K, Gerhard, O, Levin, Y, Mascetti, L, Nayakshin, S, Perets, HB, Perrin, G, Pfuhl, O, Reid, M, Rouan, D, Zilka, M & Sternberg, A 2010, 'An extremely top-heavy initial mass function in the galactic center stellar disks', The Astrophysical Journal, vol. 708, no. 1, pp. 834 - 840. https://doi.org/10.1088/0004-637X/708/1/834

TY - JOUR

T1 - An extremely top-heavy initial mass function in the galactic center stellar disks

AU - Bartko, H

AU - Martins, F

AU - Trippe, S

AU - Fritz, T

AU - Genzel, Reinhard

AU - Ott, T

AU - Eisenhauer, F

AU - Gillessen, Stefan

AU - Paumard, T

AU - Alexander, T

AU - Dodd-Eden, K

AU - Gerhard, O

AU - Levin, Yuri

AU - Mascetti, L

AU - Nayakshin, S

AU - Perets, H B

AU - Perrin, G

AU - Pfuhl, Oliver

AU - Reid, M

AU - Rouan, D

AU - Zilka, M

AU - Sternberg, A

PY - 2010

Y1 - 2010

N2 - We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the spectroscopic detection of early- and late-type stars to mK a?Y 16, more than 2 mag deeper than our previous data sets. Our observations result in a total sample of 177 bona fide early-type stars. We find that most of these Wolf Rayet (WR), O-, and B-stars reside in two strongly warped disks between 08 and 12a?? from Sgr A*, as well as a central compact concentration (the S-star cluster) centered on Sgr A*.

AB - We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the spectroscopic detection of early- and late-type stars to mK a?Y 16, more than 2 mag deeper than our previous data sets. Our observations result in a total sample of 177 bona fide early-type stars. We find that most of these Wolf Rayet (WR), O-, and B-stars reside in two strongly warped disks between 08 and 12a?? from Sgr A*, as well as a central compact concentration (the S-star cluster) centered on Sgr A*.

UR - http://iopscience.iop.org.ezproxy.lib.monash.edu.au/0004-637X/708/1/834

U2 - 10.1088/0004-637X/708/1/834

DO - 10.1088/0004-637X/708/1/834

M3 - Article

VL - 708

SP - 834

EP - 840

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 1538-4357

IS - 1

ER -

An extremely top-heavy initial mass function in the galactic center stellar disks

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