Difference: GCNCIRCULAR21521 ( vs. 1)

Revision 12017-08-18 - ThomasKupfer

Line: 1 to 1

Added:

>
>

META TOPICPARENT	name="LVCGCNs"

TITLE: GCN CIRCULAR
NUMBER: 21521
SUBJECT: LIGO/Virgo G298048: Nearby Galaxies in the Localization Volume with Face-on Assumption
DATE: 17/08/17 20:12:41 GMT
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 GROWTH (Global Relay of Observatories Watching Transients Happen) collaboration

We spatially cross-matched the LIGO/Virgo G298048 trigger with the assumption of face-on orientation (90% containment volume using bayestar-HLV-face-on.fits; LVC GCN 21513) with our Census of the Local Universe (CLU; Cook et al. in prep) galaxy catalog and found 13 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. 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 all 13 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). We also list the dust-corrected star formation rates (SFRs) for galaxies with GALEX FUV detections and a 'nan' for those with no detection.

Of the 13 galaxies, 4 galaxies are not in the list of 54 galaxies reported in GCN #21519 without the face-on assumption. The new galaxies are marked with a ‘*’.

name_NED ra dec distmpc logsfr_fuv logmstar dm_kin P

-------- -------- -------

-------- ------ --------------
NGC 4830 194.3663 -19.6913 47.90 -1.419 10.41 33.40 0.600362551579
MCG -04-31-042 198.5739 -26.5827 54.70 nan 9.98 33.69 0.820306676922*

1. 1. 1. 1. MASX J12525109-1529300 193.2130 -15.4916 52.26

nan 9.31 33.59 0.807651962502

1. 1. 1. 1. MASX J12573271-1942006 194.3863 -19.7002 52.39

-1.788 9.25 33.60 0.723692228565

1. 1. 1. 1. MASX J12551928-1456593 193.8304 -14.9499 48.56

nan 9.22 33.43 0.801217259508*
IC 3825 192.6544 -14.4828 51.04 -0.985 9.17 33.54 0.776579689512

1. 1. 1. 1. MASX J13073768-2356181 196.9071 -23.9384 49.73

nan 8.92 33.48 0.634606246205
WINGS J125412.84-153523.6 193.5534 -15.5899 50.96 nan 8.64 33.54 0.595385148382
6dF J1254495-160308 193.7063 -16.0523 48.02 nan 8.52 33.41 0.197814505144
GALEXASC J125259.36-152150.9 193.2474 -15.3639 49.87 -1.321 8.41 33.49 0.419676266799
GALEXASC J125157.02-160617.8 192.9872 -16.1047 50.30 nan 8.06 33.51 0.410982650697
GALEXASC J125404.25-145044.4 193.5173 -14.8457 50.85 -1.659 7.75 33.53 0.823290805821*
MCG -02-33-014 192.3380 -13.3512 49.57 nan nan 33.48 0.82251638918*

* Galaxies not reported in the CLU crossmatch to LIGO with no orientation assumptions (GCN #21519).

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).

-- ThomasKupfer - 18 Aug 2017

View topic | History: r1 | More topic actions...