Monitoring dusty sources in the vicinity of Sgr A*

Abstract

We trace several dusty infrared sources on their orbit around the supermassive black hole (SMBH) SgrA* in the center of our galaxy. We give an overview of known and unknown sources in the direct vicinity of our SMBH in a radius of around 0.04pc. For that, we are using NACO (K- and L'-band) and SINFONI (H+K-band) data (VLT, Chile/Paranal) between 2002 and 2018. Our spectroscopic analysis reveals a Doppler-shifted line emission of Br_gamma and HeI. Additionally, we report the detection of [FeIII] lines that are found exclusively in the investigated dusty sources west of SgrA*. We speculate, that the known [FeIII] emission in the GC is partially generated due to the line emission of the Dusty sources investigated in this work. However, we extend our analysis of the GC by taking the bright Br_gamma-bar close (< 120 mas) to SgrA* into account. The finding of this feature is in line with a reported SgrA* X-ray bubble that consists of an open side towards G359.945-0.044 (North-West-West direction). The location of the open side of this X-ray bubble coincides with the emission of the bright Br_gamma-bar detected in our SINFONI data-cubes.

arXiv comment34 pages, 19 figures

References in corpus (61)

• Monitoring stellar orbits around the Massive Black Hole in the Galactic Center
• The Galactic Center Massive Black Hole and Nuclear Star Cluster
• Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way
• Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
• A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty
• High Proper Motion Stars in the Vicinity of Sgr A*: Evidence for a Supermassive Black Hole at the Center of Our Galaxy
• The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth
• SINFONI in the Galactic Center: young stars and IR flares in the central light month
• Improving PARSEC models for very low mass stars
• The Mid-Infrared Instrument for the James Webb Space Telescope I: Introduction
• Stellar disk in the galactic center -- a remnant of a dense accretion disk?
• A gas cloud on its way towards the super-massive black hole in the Galactic Centre
• Line derived infrared extinction towards the Galactic Center
• A method to remove residual OH emission from near infrared spectra
• A Fast Algorithm for Cosmic Rays Removal from Single Images
• Physics of the Galactic Center Cloud G2, on its Way towards the Super-Massive Black Hole
• The two states of Sgr A* in the near-infrared: bright episodic flares on top of low-level continuous variability
• The Mid-Infrared Instrument for the James Webb Space Telescope, III: MIRIM, The MIRI Imager
• The Milky Way's Supermassive Black Hole: How good a case is it? A Challenge for Astrophysics & Philosophy of Science
• Twelve years of spectroscopic monitoring in the Galactic Center: the closest look at S-stars near the black hole
• Source-intrinsic near-infrared properties of Sgr A*: Total intensity measurements
• Detection of Galactic Center source G2 at 3.8 $\mu$m during periapse passage
• Optically visible post-AGB/RGB stars and young stellar objects in the Small Magellanic Cloud: candidate selection, spectral energy distributions and spectroscopic examination
• Simulations of the Origin and Fate of the Galactic Center Cloud G2
• The Galactic Center cloud G2 and its gas streamer
• Near-infrared proper motions and spectroscopy of infrared excess sources at the Galactic Center
• Investigating the Relativistic Motion of the Stars Near the Supermassive Black Hole in the Galactic Center
• Pericenter passage of the gas cloud G2 in the Galactic Center
• Depletion patterns and dust evolution in the ISM
• The Galactic Center Cloud G2 -- a Young Low-Mass Star with a Stellar Wind
• A population of dust-enshrouded objects orbiting the Galactic black hole
• Iron and silicate dust growth in the Galactic interstellar medium: clues from element depletions
• The Mid-Infrared Instrument for the James Webb Space Telescope, VIII: The MIRI Focal Plane System
• Pinpointing the near-infrared location of Sgr A* by correcting optical distortion in the NACO imager
• Early-stage young stellar objects in the Small Magellanic Cloud
• First proper motions of thin dust filaments at the Galactic Center
• A Cool Accretion Disk around the Galactic Centre Black Hole
• Cometary shaped sources at the Galactic Center - Evidence for a wind from the central 0.2 pc
• Monitoring the Dusty S-Cluster Object (DSO/G2) on its Orbit towards the Galactic Center Black Hole
• Detection of a hot molecular core in the Large Magellanic Cloud with ALMA
• The S-Star Cluster at the Center of the Milky Way: On the nature of diffuse NIR emission in the inner tenth of a parsec
• A dual emission mechanism in Sgr A*/L' ?
• IRS 13N: a new comoving group of sources at the Galactic Center
• Dust-enshrouded star near supermassive black hole: predictions for high-eccentricity passages near low-luminosity galactic nuclei
• Star Formation in the vicinity of Nuclear Black Holes: Young Stellar Objects close to Sgr A*
• The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole
• The Post-Pericenter Evolution of the Galactic Center Source G2
• A Three Parsec-Scale Jet-Driven Outflow from Sgr A*
• Confusing binaries: the role of stellar binaries in biasing disk properties in the Galactic Center
• A nova origin of the gas cloud at the Galactic Center ?
• Nature of the Galactic centre NIR-excess sources. I. What can we learn from the continuum observations of the DSO/G2 source?
• ALMA Detection of Bipolar Outflows: Evidence for Low Mass Star Formation within 1pc of Sgr A*
• Polarized near-infrared light of the Dusty S-cluster Object (DSO/G2) at the Galactic Center
• M-Band Spectra of Dust Embedded Sources at the Galactic Center
• A new bow-shock source with bipolar morphology in the vicinity of Sgr A*
• ALMA and VLA observations of emission from the environment of Sgr A*
• The influence of dense gas rings on the dynamics of a stellar disk in the Galactic center
• The Galactic Centre source G2 was unlikely born in any of the known massive binaries
• Intrinsically Polarized Stars and Implication for Star Formation in the Central Parsec of Our Galaxy
• Tidally-disrupted Molecular Clouds falling to the Galactic Center
• The complex phenomena of YSOs revealed by their X-ray variability

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