AstroNote 2023-164

The JWST Advanced Deep Extragalactic Survey (JADES) obtained Cycle-1 NIRCam images of the GOODS-N field using 4 short-wavelength (SW) filters (F090W, F115W, F150W, and F200W) and 5 long-wavelength (LW) filters (F277W, F335M, F356W, F410M, and F444W). The data were taken February 3-7, 2023. Seventeen transients were detected with the data set with respect to the GOODS-N HST mosaic images (v2.5) distributed by the Hubble Legacy Fields (HLF) project (https://archive.stsci.edu/prepds/hlf).  The transients were discovered via either visual inspection or PSF-matched image subtraction. Below we list the position, photometry and redshift information for each of these sources. The information on the host galaxies were obtained either from NED, SIMBAD, or SED modeling using the code EAZY (Brammer et al. 2008) or BAGPIPES (Carnall et al. 2018), and all the reported magnitudes are in AB. We attempted to classify each transient using the model fittiing feature of the open source SNCosmo package and obtained strongly-preferred models (>90% likelihood) for 5 of the transients.

2023jxw (jades-gn-2023a) lies in galaxy FIGS GN1 1497 (z_spec = 0.555), as reported in SIMBAD. It was discovered at position (12:36:37.573, +62:17:46.73) (J2000) and has the following preliminary apparent magnitudes:

F090W=24.81(0.07), F115W=24.48(0.07), F150W=24.52(0.10), F200W=24.43(0.13), F277W=24.72(0.21), F335M=25.28(0.29), F356W=25.30(0.26), F410M=25.44(0.27), F444W=25.44(0.27).

The corresponding absolute magnitudes are -17.24 at 578 nm and -17.57 at 739 nm.

2023jxx (jades-gn-2023b) lies in galaxy GOODS J123631.78+621820.7 (z_spec = 0.943), as reported in SIMBAD. It was discovered at position (12:36:31.758, +62:18:20.77) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.94(0.73), F115W=25.98(0.45), F150W=25.48(0.33), F200W=24.93(0.35), F277W=25.20(0.50), F335M=25.35(0.56), F356W=25.42(0.60), F410M=25.66(0.67), F444W=25.68(0.65).

The corresponding absolute magnitudes are -16.28 at 463 nm and -17.24 at 591 nm.

2023jxy (jades-gn-2023c) lies in galaxy GOODS J123654.39+621434.7 (z_spec = 0.577), as reported in SIMBAD. It was discovered at position (12:36:54.343, +62:14:34.36) (J2000) and has the following preliminary apparent magnitudes:

F090W=27.79(1.46), F115W=26.71(0.57), F150W=26.66(0.72), F200W=26.11(0.58), F277W=26.52(1.09), F335M=27.89(3.36), F356W=27.11(1.42), F410M=28.62(5.26), F444W=27.39(1.60).

The corresponding absolute magnitudes are -14.35 at 570 nm and -15.43 at 729 nm.

2023jxz (jades-gn-2023d) lies in galaxy MODS deep 2904 (z_phot = 0.52), as reported in SIMBAD. SNCosmo model fitting suggests that this is a type Ia supernova (best-fit model is salt3-nir). It was discovered at position (12:36:38.979, +62:15:25.79) (J2000) and has the following preliminary apparent magnitudes:

F090W=25.27(0.03), F115W=25.95(0.04), F150W=26.00(0.05), F200W=25.97(0.06), F277W=25.56(0.04), F335M=25.87(0.04), F356W=25.84(0.05), F410M=25.89(0.05), F444W=25.90(0.06).

The corresponding absolute magnitudes are -16.64 at 592 nm and -15.95 at 756 nm.

2023jya (jades-gn-2023e) lies in galaxy S-CANDELS J123619.80+621601.2 (z_spec = 1.357), as reported in the NASA/IPAC Extragalactic Database (NED). SNCosmo model fitting suggests that this is a type Ia supernova (best-fit model is salt3-nir). It was discovered at position (12:36:19.692, +62:16:01.36) (J2000) and has the following preliminary apparent magnitudes:

F090W=28.68(0.19), F115W=27.59(0.05), F150W=26.61(0.03), F200W=26.34(0.03), F277W=27.34(0.10), F335M=28.47(0.22), F356W=28.24(0.20), F410M=28.08(0.22), F444W=28.20(0.25).

The corresponding absolute magnitudes are -16.40 at 487 nm and -17.38 at 636 nm.

2023jyb (jades-gn-2023f) lies in galaxy TKRS 1559 (z_spec = 0.5945), as reported in SIMBAD. It was discovered at position (12:36:26.626, +62:16:52.08) (J2000) and has the following preliminary apparent magnitudes:

F090W=25.41(0.10), F115W=25.25(0.11), F150W=25.46(0.15), F200W=25.38(0.18), F277W=25.80(0.31), F335M=26.32(0.37), F356W=26.39(0.36), F410M=26.51(0.31), F444W=26.55(0.35).

The corresponding absolute magnitudes are -16.80 at 564 nm and -16.96 at 721 nm.

2023jyc (jades-gn-2023g) lies in galaxy MODS wide 1776 (z_spec = 1.67514), as reported in SIMBAD. SNCosmo model fitting suggests that this is a type II supernova (best-fit model is snana-2006iw). It was discovered at position (12:36:12.792, +62:12:59.59) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.28(0.04), F115W=26.10(0.03), F150W=26.13(0.04), F200W=26.07(0.04), F277W=26.47(0.03), F356W=26.76(0.03), F410M=27.03(0.08), F444W=27.14(0.06).

The corresponding absolute magnitudes are -18.31 at 429 nm and -18.29 at 560 nm.

2023jyd (jades-gn-2023h) lies in the same system as S-CANDELS J123610.11+621449.2 (z_spec = 2.325), as reported in the NASA/IPAC Extragalactic Database. Note that S-CANDELS J123610.11+621449.2 lies ~0.3'' away from the true host, but seeing-limited (0.6''-1.2'') ground-based spectroscopy quotes the redshift for the whole system. BAGPIPES (Carnall et al. 2018) SED modeling of only the true host using HST ACS/WFC3 photometry measures the host redshift as z_phot = 2.8. SNCosmo model fitting suggests that this is a type II supernova (best-fit model is snana-2007lj). It was discovered at position (12:36:10.166, +62:14:49.35) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.55(0.04), F115W=26.20(0.02), F150W=25.89(0.03), F200W=25.66(0.03), F277W=26.17(0.03), F356W=26.34(0.04), F410M=26.31(0.05), F444W=26.40(0.06).

The corresponding absolute magnitudes are -19.16 at 451 nm and -19.39 at 601 nm.

2023jye (jades-gn-2023i) lies in galaxy S-CANDELS J123607.65+621441.3 (z_spec = 1.47844), as reported in the NASA/IPAC Extragalactic Database (NED). SNCosmo model fitting suggests that this is a type Ia supernova (best-fit model is salt3-nir). It was discovered at position (12:36:07.680, +62:14:41.39) (J2000) and has the following preliminary apparent magnitudes:

F090W=25.79(0.11), F115W=24.99(0.05), F150W=24.89(0.06), F200W=24.87(0.09), F277W=25.35(0.17), F356W=25.58(0.21), F410M=25.44(0.21), F444W=25.44(0.20).

The corresponding absolute magnitudes are -19.17 at 464 nm and -19.28 at 605 nm.

2023jyf (jades-gn-2023j) lies in galaxy S-CANDELS J123658.56+621305.2 (z_phot = 2.04_{-0.01}^{+0.18}), which was derived from the SED modeling of the host galaxy (to the lower right of the transient) in HST ACS and JWST NIRCam bands using code EAZY (Brammer et al. 2008). It was discovered at position (12:36:58.584, +62:13:05.76) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.05(0.01), F115W=25.70(0.01), F150W=25.88(0.02), F200W=26.06(0.03), F277W=27.12(0.11), F335M=27.74(0.19), F356W=27.90(0.21), F410M=28.34(0.37), F444W=28.29(0.30).

The corresponding absolute magnitudes are -18.93 at 493 nm and -18.74 at 657 nm.

2023jyg (jades-gn-2023k) lies in galaxy JADES-GN+189.21028+62.19546 (z_phot = 1.69_{-0.19}^{+0.17}), which was derived from the SED modeling of the host galaxy (to the upper left of the transient) in HST ACS and JWST NIRCam bands using code EAZY (Brammer et al. 2008). It was discovered at position (12:36:50.466, +62:11:43.62) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.47(0.01), F115W=26.36(0.01), F150W=26.45(0.01), F200W=26.48(0.02), F277W=27.05(0.03), F335M=27.51(0.05), F356W=27.60(0.03), F410M=27.89(0.08), F444W=27.78(0.05).

The corresponding absolute magnitudes are -18.07 at 427 nm and -17.99 at 557 nm.

2023jyh (jades-gn-2023l) lies in galaxy GOODS J123634.96+621224.5 (z_spec = 0.562), as reported in SIMBAD. It was discovered at position (12:36:34.931, +62:12:23.39) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.46(0.41), F115W=27.48(1.39), F150W=29.00(8.17 AB).

The corresponding absolute magnitudes are -15.62 at 576 nm and -14.60 at 736 nm.

2023jyi (jades-gn-2023m) does not appear to have a host galaxy. It was discovered at position (12:36:51.501, +62:13:19.69) (J2000) and has the following preliminary apparent magnitudes:

F090W=27.20(0.04), F115W=26.94(0.02), F150W=26.93(0.03), F200W=26.84(0.03), F277W=27.47(0.04), F335M=27.81(0.07), F356W=27.73(0.03), F410M=27.90(0.11), F444W=27.96(0.06).

2023jyj (jades-gn-2023n) lies in galaxy MODS Kdeep 1192 (z_phot = 1.047), as reported in the NASA/IPAC Extragalactic Database (NED). It was discovered at position (12:36:43.115, +62:12:33.09) (J2000) and has the following preliminary apparent magnitudes:

F090W=27.34(0.07), F115W=26.76(0.05), F150W=26.43(0.04), F200W=26.23(0.07), F277W=26.70(0.11), F335M=26.95(0.13), F356W=26.93(0.12), F410M=26.93(0.12), F444W=27.14(0.14).

The corresponding absolute magnitudes are -16.10 at 439 nm and -16.68 at 561 nm.

2023jyk (jades-gn-2023o) lies in galaxy TKRS 9607 (z_spec = 0.594), as reported in SIMBAD. It was discovered at position (12:37:08.146, +62:12:15.09) (J2000) and has the following preliminary apparent magnitudes:

F090W=25.68(0.32), F115W=25.55(0.36), F150W=25.67(0.45), F200W=25.54(0.55), F277W=25.96(0.95), F335M=26.42(1.11), F356W=26.59(1.15), F410M=26.71(1.06), F444W=26.63(1.02).

The corresponding absolute magnitudes are -16.53 at 564 nm and -16.65 at 721 nm.

2023jyl (jades-gn-2023p) lies in galaxy [STC2007] J123652.69+621355.3 (z_spec = 1.355), as reported in SIMBAD. It was discovered at position (12:36:52.696, +62:13:55.39) (J2000) and has the following preliminary apparent magnitudes:

F090W=26.83(0.27), F115W=26.29(0.18), F150W=26.19(0.21), F200W=26.28(0.28), F277W=27.33(0.85), F335M=28.21(1.62), F356W=28.29(1.76), F410M=28.20(1.78), F444W=28.14(1.75).

The corresponding absolute magnitudes are -17.70 at 488 nm and -17.79 at 636 nm.

2023jym (jades-gn-2023q) does not appear to have a host galaxy. It was discovered at position (12:37:02.722, +62:09:47.85) (J2000) and has the following preliminary apparent magnitudes:

F090W=27.28(0.04), F115W=26.94(0.02), F150W=26.94(0.02), F200W=26.69(0.02), F277W=27.22(0.02), F335M=27.45(0.02), F356W=27.48(0.02), F410M=27.61(0.06), F444W=27.61(0.04).