A Method to Search for Black Hole Candidates with Giant Companions by LAMOST

@article{Gu2019AMT,
  title={A Method to Search for Black Hole Candidates with Giant Companions by LAMOST},
  author={Weimin Gu and Hui-Jun Mu and Jin-Bo Fu and Ling-Lin Zheng and Tuan Yi and Zhong-rui Bai and Song-Yun Wang and Haotong Zhang and Yajuan Lei and Yu Bai and Jianfeng Wu and Junfeng Wang and Jifeng Liu},
  journal={The Astrophysical Journal},
  year={2019}
}
We propose a method to search for stellar-mass black hole (BH) candidates with giant companions from spectroscopic observations. Based on the stellar spectra of LAMOST Data Release 6, we obtain a sample of seven giants in binaries with large radial velocity variation $\Delta V_R > 80~{\rm km~s^{-1}}$. With the effective temperature, surface gravity, and metallicity provided by LAMOST, and the parallax given by {\it Gaia}, we can estimate the mass and radius of the giant, and therefore evaluate… 

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References

SHOWING 1-10 OF 28 REFERENCES
A detached stellar-mass black hole candidate in the globular cluster NGC 3201
As part of our massive spectroscopic survey of 25 Galactic globular clusters with MUSE, we performed multiple epoch observations of NGC 3201 with the aim of constraining the binary fraction. In this
Revealing black holes with Gaia
We estimate the population of black holes with luminous stellar companions (BH-LCs) in the Milky Way (MW) observable by Gaia. We evolve a realistic distribution of BH-LC progenitors from zero-age to
Black Hole, Neutron Star and White Dwarf Candidates from Microlensing with OGLE-III
Most stellar remnants so far have been found in binary systems, where they interact with matter from their companions. Isolated neutron stars and black holes are difficult to find as they are dark,
VVV Survey Observations of a Microlensing Stellar Mass Black Hole Candidate in the Field of the Globular Cluster NGC 6553
We report the discovery of a large timescale candidate microlensing event of a bulge stellar source based on near-infrared observations with the VISTA Variables in the Via Lactea Survey (VVV). The
Detecting Black Hole Binaries by Gaia
We study the prospect of the Gaia satellite to identify black hole binary systems by detecting the orbital motion of the companion stars. Taking into account the initial mass function, mass transfer,
Spectroscopy of $A0620-00$: the mass of the black hole and an image of its accretion disc
We present spectra of the black hole binary A0620-00 taken at Hα and Hβ to study the distribution of emission-line flux from its accretion disc. Using the spectra of Hα, we have measured the K-type
Hunting black holes with Gaia
We predict the number of black holes with stellar companions that are potentially detectable with Gaia astrometry over the course of its five-year mission. Our model estimates that nearly
The Neutron star and black hole initial mass function
Using recently calculated models for massive stellar evolution and supernovae coupled to a model for Galactic chemical evolution, neutron star and black hole birth functions (number of neutron stars
A new radial velocity curve for the RS CVn star σ Gem - Constraints on its physical parameters
high quality radial velocity measurements of the RS CVn star Gem taken in 1993, 1994, and 1995 1 are used in combination with older measurements to t a new radial velocity curve. Essentially, the
Dark passengers★ in stellar surveys
TLDR
stellar population models to predict the number of binaries with a single luminous member is Gaia and Hipparcos are developed and it is shown how the statistical distribution of detections can be used to constrain the formation process of neutron stars and black holes.
...
1
2
3
...