Color dependence of clustering of massive galaxies at 0.5$le z le$2.5: similar spatial distributions between green valley galaxies and AGNs. (arXiv:1909.12463v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Lin_X/0/1/0/all/0/1">Xiaozhi Lin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fang_G/0/1/0/all/0/1">Guanwen Fang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cai_Z/0/1/0/all/0/1">Zhen-Yi Cai</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_T/0/1/0/all/0/1">Tao Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fan_L/0/1/0/all/0/1">Lulu Fan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kong_X/0/1/0/all/0/1">Xu Kong</a>
We present a measurement of the spatial clustering of rest-frame UV-selected
massive galaxies at $0.5le z le 2.5$ in the COSMOS/UltraVISTA field.
Considering four separate redshift bins with $Delta z=0.5$, we construct three
galaxy populations, i.e., red sequence (RS), blue cloud (BC), and green valley
(GV) galaxies, according to their rest-frame extinction-corrected UV colors.
The correlation lengths of these populations are confirmed to be dependent on
their rest-frame UV color and redshift: UV redder galaxies are found to be more
clustered. In all redshift bins, the GV galaxies generally have medium
clustering amplitudes and are hosted within dark matter halos whose masses are
more or less between those of RS and BC galaxies; and the clustering amplitude
of GV galaxies is close to that of AGNs in the same redshift bin, suggesting
that AGN activity may be responsible for transforming galaxy colors. After
carefully examining their stellar masses, we find that the clustering
amplitudes of galaxy samples with different colors are all similar once they
have a similar median stellar mass and that the median stellar mass alone may
be a good predictor of galaxy clustering.
We present a measurement of the spatial clustering of rest-frame UV-selected
massive galaxies at $0.5le z le 2.5$ in the COSMOS/UltraVISTA field.
Considering four separate redshift bins with $Delta z=0.5$, we construct three
galaxy populations, i.e., red sequence (RS), blue cloud (BC), and green valley
(GV) galaxies, according to their rest-frame extinction-corrected UV colors.
The correlation lengths of these populations are confirmed to be dependent on
their rest-frame UV color and redshift: UV redder galaxies are found to be more
clustered. In all redshift bins, the GV galaxies generally have medium
clustering amplitudes and are hosted within dark matter halos whose masses are
more or less between those of RS and BC galaxies; and the clustering amplitude
of GV galaxies is close to that of AGNs in the same redshift bin, suggesting
that AGN activity may be responsible for transforming galaxy colors. After
carefully examining their stellar masses, we find that the clustering
amplitudes of galaxy samples with different colors are all similar once they
have a similar median stellar mass and that the median stellar mass alone may
be a good predictor of galaxy clustering.
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