We develop a new Multi-Tracer Halo Occupation Distribution ( MTHOD ) framework for the galaxy distribution and apply it to the extended Baryon Oscillation Spectroscopic Survey ( eBOSS ) final data between z = 0.7 - 1.1 .
We obtain a best fit MTHOD for each tracer and describe the host halo properties of these galaxies .
The mean halo masses for LRGs , ELGs and QSOs are found to be 1.9 \times 10 ^ { 13 } h ^ { -1 } M _ { \odot } , 1.1 \times 10 ^ { 12 } h ^ { -1 } M _ { \odot } and 5 \times 10 ^ { 12 } h ^ { -1 } M _ { \odot } respectively in the eBOSS data .
We use the MTHOD framework to create mock galaxy catalogues and predict auto- and cross-correlation functions for all the tracers .
Comparing these results with data , we investigate galactic conformity , the phenomenon whereby the properties of neighbouring galaxies are mutually correlated in a manner that is not captured by the basic halo model .
We detect 1-halo conformity at more than 3 \sigma statistical significance , while obtaining upper limit on 2-halo conformity .
We also look at the environmental dependence of the galaxy quenching efficiency and find that halo mass driven quenching successfully explains the behaviour in high density regions , but it fails to describe the quenching efficiency in low density regions .
In particular , we show that the quenching efficiency in low density filaments is higher in the observed data , as compared to the prediction of the MTHOD with halo mass driven quenching .
The mock galaxy catalogue constructed in this paper is publicly available on this website \url https : //www.roe.ac.uk/ salam/MTHOD/ .