SIMBAD references

2019ApJS..243...24P - Astrophys. J., Suppl. Ser., 243, 24-24 (2019/August-0)

The COS Absorption Survey of Baryon Harbors: the galaxy database and cross-correlation analysis of O VI systems.

PROCHASKA J.X., BURCHETT J.N., TRIPP T.M., WERK J.K., WILLMER C.N.A., HOWK J.C., LANGE S., TEJOS N., MEIRING J.D., TUMLINSON J., LEHNER N., FORD A.B. and DAVE R.

Abstract (from CDS):

We describe the survey for galaxies in the fields surrounding nine sightlines to far-UV bright, z ∼ 1 quasars that define the COS Absorption Survey of Baryon Harbors (CASBaH) program. The photometry and spectroscopy that comprise the data set come from a mixture of public surveys (SDSS, DECaLS) and our dedicated efforts on private facilities (Keck, MMT, LBT). We report the redshifts and stellar masses for 5902 galaxies within ≃10 comoving-Mpc of the sightlines with a median of {bar}z=0.28 and {bar}M*~1010.1M. This data set, publicly available as the CASBaH SPECDB, forms the basis of several recent and ongoing CASBaH analyses. Here, we perform a clustering analysis of the galaxy sample with itself (auto-correlation) and against the set of O VI absorption systems (cross-correlation) discovered in the CASBaH quasar spectra with column densities N(O+5)≥ 1013.5cm–2. For each, we describe the measured clustering signal with a power-law correlation function ξ(r)=(r/r0)^-γ^ and find that (r0,γ)=(5.48±0.07h100–1Mpc,1.33±0.04) for the auto-correlation and (6.00–0.77+1.09h100–1Mpc,1.25±0.18) for galaxy-O VI cross-correlation. We further estimate a bias factor of bgg=1.3±0.1 from the galaxy-galaxy auto-correlation, indicating the galaxies are hosted by halos with mass Mhalo~10^12.1±0.05^M. Finally, we estimate an O VI-galaxy bias factor bOVI=1.0±0.1 from the cross-correlation which is consistent with O VI absorbers being hosted by dark matter halos with typical mass Mhalo~1011M. Future works with upcoming data sets (e.g., CGM2) will improve upon these results and will assess whether any of the detected O VI arises in the intergalactic medium.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): astronomical databases: miscellaneous - galaxies: evolution - intergalactic medium - quasars: absorption lines

VizieR on-line data: <Available at CDS (J/ApJS/243/24): table7.dat>

Nomenclature: Table 7: [PBT2019] NNNNN (Nos 0-10755).

CDS comments: Table 7 : all objects with redshift ≥ 0.001 have been ingested in SIMBAD

Simbad objects: 10225

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2023.03.27-15:00:22

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