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J/ApJ/647/303       Spectroscopic survey of hypervelocity stars   (Brown+, 2006)

Hypervelocity stars. I. The spectroscopic survey. Brown W.R., Geller M.J., Kenyon S.J., Kurtz M.J. <Astrophys. J., 647, 303-311 (2006)> =2006ApJ...647..303B
ADC_Keywords: Surveys ; Galaxies, nearby ; Radial velocities ; Photometry, SDSS Keywords: galaxies: individual (Leo A, Draco) - Galaxy: halo - Galaxy: stellar content - stars: horizontal-branch - white dwarfs Abstract: We discuss our targeted search for hypervelocity stars (HVSs), stars traveling with velocities so extreme that dynamical ejection from a massive black hole is their only suggested origin. Our survey, now half-complete, has successfully identified a total of four probable HVSs plus a number of other unusual objects. Here we report the two most recently discovered HVSs: SDSS J110557.45+093439.5 and possibly SDSS J113312.12+010824, traveling with Galactic rest-frame velocities at least +508±12 and 418±10km/s, respectively. Description: Observations were obtained with the Blue Channel Spectrograph on the 6.5m MMT telescope. Observations were obtained on the nights of 2005 July 10-11, 2005 December 3-5, and 2006 February 22-25. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 61 7 Hypervelocity Stars table2.dat 78 202 *Late B objects table3.dat 78 44 *White dwarfs
Note on table2.dat,table3.dat: Stars identified as [BGK2006] in Simbad
See also: J/ApJ/660/311 : Hypervelocity stars. II (Brown+, 2007) J/ApJ/671/1708 : Hypervelocity stars. III (Brown+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [HVS] 4 I1 --- HVS HVS number, [BGK2006] HV N in Simbad (1) 5 A1 --- n_HVS [a] a: Probable HVS 7- 11 F5.1 deg GLON Galactic longitude 12- 16 F5.1 deg GLAT Galactic latitude 18- 21 F4.1 mag g'mag SDSS g' magnitude 23- 26 I4 km/s Vrf Velocity in Galactic rest frame (2) 28- 30 I3 kpc Dist Heliocentric distance estimate 32- 34 I3 Myr tGC Travel time from the Galactic Center 36- 59 A24 --- Name Name of the star 61 I1 --- Ref [1/4]? Catalog Reference (3)
Note (1): HVS4-HVS7 are from this targeted HVS survey. Note (2): VRF=Vhelio+(10cosl*cosb+5.2sinl*cosb+7.2sinb)+220sinl*cosb Note (3): References as follows: 1 = Brown et al., 2005ApJ...622L..33B 2 = Hirsch et al., 2005A&A...444L..61H 3 = Edelmann et al., 2005ApJ...634L.181E 4 = Brown et al., 2006ApJ...640L..35B
Byte-by-byte Description of file: table[23].dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of Right Ascension (J2000) 4- 5 I2 min RAm Minute of Right Ascension (J2000) 7- 11 F5.2 s RAs Second of Right Ascension (J2000) 13 A1 --- DE- Sign of the Declination (J2000) 14- 15 I2 deg DEd Degree of Declination (J2000) 17- 18 I2 arcmin DEm Arcminute of Declination (J2000) 20- 23 F4.1 arcsec DEs Arcsecond of Declination (J2000) 25- 30 F6.3 mag g'mag SDSS g' band magnitude 32- 36 F5.3 mag e_g'mag Uncertainty in g'mag 38- 42 F5.3 mag (u'-g')0 SDSS dereddened u'-g' color index 44- 48 F5.3 mag e_(u'-g')0 Uncertainty in (u'-g')0 50- 55 F6.3 mag (g'-r')0 SDSS dereddened g'-r' color index 57- 61 F5.3 mag e_(g'-r')0 Uncertainty in (g'-r')0 63- 66 I4 km/s HV Heliocentric Velocity 68- 69 I2 km/s e_HV Uncertainty in HV 71- 74 F4.1 [Sun] [Fe/H] ? The [Fe/H] abundance (only in table2) 76- 78 F3.1 [Sun] e_[Fe/H] ? Uncertainty in [Fe/H] (only in table2)
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 08-Jul-2008
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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