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GCN Circular 21485

Subject
LIGO/Virgo G297595: Nearby Galaxies in the Localization Volume
Date
2017-08-14T22:51:54Z (8 years ago)
From
Mansi M. Kasliwal at Caltech <mansi@astro.caltech.edu>
David O. Cook (Caltech), Angela Van Sistine (UW Milwaukee), Leo Singer
(NASA/GSFC), and M. M. Kasliwal (Caltech)

report on behalf of the iPTF and GROWTH collaborations

We spatially cross-matched the LIGO/Virgo G297595 trigger (90% containment
volume; LVC GCN 21476Loading...
 
 ) with our Census of the Local Universe (CLU; Cook et
al. in prep) galaxy catalog and found 82 galaxies. This catalog is a
compilation of galaxies with existing redshifts from many sources (e.g.,
NED, SDSS, etc) and new galaxies from a 3PI four-filter narrow-band survey
to look for redshifted Halpha emission out to 200 Mpc with the Palomar
Oschin 48-inch telescope. Since our catalog extends out to only ~200 Mpc
the resulting cross-matched galaxies cover only the nearest portion of the
full 90% localization volume. The narrow-band survey is limited to a
declination above -20 degrees, thus all galaxies within the 90% volume come
from the compiled CLU catalog with no Halpha overlap.

We list here the top 20 galaxies sorted by stellar mass (Mstar) for
galaxies whose location on the sky and distance falls in the 90% volume
reported by the bayestar probability sky map (Singer et al. 2016). The
total stellar mass located in the top 20 galaxies is 1.2e12 Msun, or 62% of
all mass in the 82 galaxies. We also list the dust-corrected star formation
rates (SFRs) for galaxies with GALEX FUV detections and a 'nan' for those
with no detection.

        name_NED           ra     dec    distmpc logsfr_fuv logmstar dm_kin
----------------------- ------- -------- ------- ---------- -------- ------
         ESO 198- G 008 35.5645 -51.1082  203.28        nan    11.22  36.54
2MASX J02235787-5058237 35.9912 -50.9733  203.55        nan    10.88  36.54
            2MFGC 01839 35.6649 -51.1009  210.38        nan    10.88  36.62
           FAIRALL 0726 36.8979 -51.2267  213.23        nan    10.87  36.64
  LCRS B025452.9-421921 44.1862 -42.1218  192.15        nan    10.87  36.42
           FAIRALL 0725 35.3950 -48.4925  271.12      0.138    10.84  37.17
         ESO 198- G 006 34.8638 -50.8529  209.43        nan    10.80  36.61
2MASX J02160149-5059094 34.0063 -50.9860  204.21        nan    10.78  36.55
  LCRS B025721.0-412315 44.8065 -41.1892  204.46        nan    10.78  36.55
2MASX J02270511-5117448 36.7714 -51.2958  202.12     -0.596    10.76  36.53
2MASX J03045777-4015102 46.2408 -40.2528  208.70     -0.638    10.69  36.60
2MASX J02411987-4534101 40.3329 -45.5695  180.75      0.144    10.65  36.29
      AM 0250-405 NED01 42.9935 -40.7236  199.58        nan    10.65  36.50
     APMBGC 247-025-101 43.1562 -43.0039  198.57        nan    10.64  36.49
2MASX J02504210-4323076 42.6755 -43.3855  198.81        nan    10.63  36.49
2MASX J02523735-4300107 43.1556 -43.0029  194.98        nan    10.62  36.45
  LCRS B025513.6-421400 44.2721 -42.0336  189.87        nan    10.59  36.39
2MASX J02251101-5039230 36.2958 -50.6564  208.82        nan    10.57  36.60
2MASX J02274395-5119348 36.9333 -51.3263  201.72        nan    10.54  36.52
2MASX J02143393-4953404 33.6416 -49.8946  200.55        nan    10.52  36.51


The SFRs are derived from GALEX all sky kron FUV magnitudes via the
prescription of Murphy et al. (2011) and have been corrected for internal
dust extinction using a combination of GALEX FUV and 22um ALLWISE fluxes
(Hao et al. 2011). The quoted stellar masses are derived from 3.4um ALLWISE
fluxes and a mass-to-light ratio of 0.5 (McGaugh & Schombert et al. 2015).