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J/ApJ/596/437     Stellar-mass black holes in the SDSS      (Chisholm+, 2003)

Stellar-mass black holes in the solar neighborhood. Chisholm J.R., Dodelson S., Kolb E.W. <Astrophys. J., 596, 437-450 (2003)> =2003ApJ...596..437C
ADC_Keywords: X-ray sources ; Spectroscopy ; Photometry, SDSS Keywords: black hole physics - solar neighborhood - stars: fundamental parameters Abstract: We search for nearby, isolated, accreting, "stellar-mass" (3-100M) black holes. Models suggest a synchrotron spectrum in visible wavelengths and some emission in X-ray wavelengths. Of 3.7 million objects in the Sloan Digital Sky Survey Early Data Release, Cat. J/AJ/123/567, about 150,000 objects have colors and properties consistent with such a spectrum, and 87 of these objects are X-ray sources from the ROSAT All-Sky Survey (Cat. IX/10 and IX/29). Thirty-two of these have been confirmed not to be black holes using optical spectra. We give the positions and colors of these 55 black hole candidates and quantitatively rank them on their likelihood to be black holes. We discuss uncertainties in the expected number of sources and the contribution of black holes to local dark matter. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 97 87 X-ray selected remnant black hole candidates table3.dat 97 29 Spectroscopically selected remnant black hole candidates
See also: IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999) IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000) J/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002) J/AJ/126/2209 : X-ray AGN from RASS and SDSS (Anderson+, 2003) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- XID Candidate number ([CDK2003] X-NN in Simbad) 4 A1 --- n_XID Identification in SDSS (1) 6- 7 I2 h RAh Hour of Right Ascension (J2000) 9- 10 I2 min RAm Minute of Right Ascension (J2000) 12- 15 F4.1 s RAs Second of Right Ascension (J2000) 17 A1 --- DE- Sign of the Declination (J2000) 18- 19 I2 deg DEd Degree of Declination (J2000) 21- 22 I2 arcmin DEm Arcminute of Declination (J2000) 24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000) 29- 33 F5.2 mag u*mag The SDSS u^*^ band magnitude (2) 35- 38 F4.2 mag e_u*mag The 1σ error in u* 40- 44 F5.2 mag g*mag The SDSS g^*^ band magnitude (2) 46- 49 F4.2 mag e_g*mag The 1σ error in g* 51- 55 F5.2 mag r*mag The SDSS r^*^ band magnitude (2) 57- 60 F4.2 mag e_r*mag The 1σ error in r* 62- 66 F5.2 mag i*mag The SDSS i^*^ band magnitude (2) 68- 71 F4.2 mag e_i*mag The 1σ error in i* 73- 77 F5.2 mag z*mag The SDSS z^*^ band magnitude (2) 79- 82 F4.2 mag e_z*mag The 1σ error in z* 84- 86 I3 ct/ks RASS ROSAT All Sky Survey count rate 88- 89 I2 ct/ks e_RASS The 1σ error in RASS 91- 96 F6.1 --- eta Relative overdensity (3)
Note (1): Notes are numbered as follows: 1 = Object identified as a star in the SDSS spectroscopic survey. 2 = Object identified as a low redshift (z~<2.3) QSO in the SDSS spectroscopic survey EDR database. 3 = Object identified as a high redshift (z∼2.3) QSO in the SDSS spectroscopic survey EDR database. 4 = Object identified as a QSO in Richards et al. (2001, Cat. J/AJ/121/2308). Note (2): Reddening corrected point-spread-function (PSF) magnitudes. Note (3): The overdensity η is defined in equation 30, and is used to rank those candidates most likely to be remnant black holes (RBH).
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 2 I2 --- SID Candidate number ([CDK2003] S-NN in Simbad) 4 A1 --- n_SID Individual remarks (1) 6- 7 I2 h RAh Hour of Right Ascension (J2000) 9- 10 I2 min RAm Minute of Right Ascension (J2000) 12- 15 F4.1 s RAs Second of Right Ascension (J2000) 17 A1 --- DE- Sign of the Declination (J2000) 18- 19 I2 deg DEd Degree of Declination (J2000) 21- 22 I2 arcmin DEm Arcminute of Declination (J2000) 24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000) 29- 33 F5.2 mag u*mag The SDSS u^*^ band magnitude (2) 35- 38 F4.2 mag e_u*mag The 1σ error in u* 40- 44 F5.2 mag g*mag The SDSS g^*^ band magnitude (2) 46- 49 F4.2 mag e_g*mag The 1σ error in g* 51- 55 F5.2 mag r*mag The SDSS r^*^ band magnitude (2) 57- 60 F4.2 mag e_r*mag The 1σ error in r* 62- 66 F5.2 mag i*mag The SDSS i^*^ band magnitude (2) 68- 71 F4.2 mag e_i*mag The 1σ error in i* 73- 77 F5.2 mag z*mag The SDSS z^*^ band magnitude (2) 79- 82 F4.2 mag e_z*mag The 1σ error in z* 84- 86 I3 --- Plate Plate number 88- 92 I5 d MJD Modified Julian Date of spectral observations 94- 96 I3 --- Fiber Fiber number
Note (1): Notes are numbered as follows: 1 = Objects identified as QSOs in Veron-Cetty & Veron (2001, Cat. VII/224). 2 = Objects identified as QSOs in Schneider et al. (2002, SDSS EDR, Cat. J/AJ/123/567). 3 = Object identified as a DB WD in Reimers et al. (1998A&A...337L..13R). 4 = This object is also X-ray selected object #3. Note (2): Reddening corrected point-spread-function (PSF) magnitudes.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 02-Dec-2003
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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