2025ApJ...994L...8D

Query : 2025ApJ...994L...8D

2025ApJ...994L...8D - Astrophys. J., 994, L8 (2025/November-3)

Enabling Early Transient Discovery in LSST via Difference Imaging with DECam.

DONG Y., DE SOTO K., VILLAR V.A., NUGENT A., GAGLIANO A., BOSTROEM K.A., ALEXOV A., AUBOURG E., AZFAR F., BOUCAUD A., BRADSHAW A., COHEN-TANUGI J., DAGORET-CAMPAGNE S., DALY P., DARUICH F., DOHERTY P.E., DRASS H., EIGER O., GUY L.P., HASCALL P.A., IVEZIC Z., JAMMES F., JEE M.J., JENNESS T., KAHN S.M., KANG Y., KELVIN L.S., KOTOV I.V., KOVACS G., LE GUILLOU L., LIANG S., LUTFI M., MAY M., MEGIAS HOMAR G., MONIEZ M., MUNOZ ARANCIBIA F., NOURBAKHSH E., PARK H.Y., PETERSON J.R., PLAZAS MALAGON A.A., POLIN D., QUINT B.C., RIBEIRO T., RIOT V.J., ROUCELLE C., SANCHEZ B.O., SANMARTIM D., SEBAG J., SEDAGHAT N., SHAW R.A., SHUGART A., SOTUELA ELORRIAGA I., SUBERLAK K., SWINBANK J.D., THOMAS S., TYSON J.A., VAN REEVEN W., WARD C., WATERS C.Z., WIECHA O. and WOOD-VASEY W.M.

Abstract (from CDS):

We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), using archival images from the Dark Energy Camera as templates for difference imaging. We apply this pipeline to the recently released Data Preview 1 (DP1; the first public release of Rubin commissioning data) and search for transients in the resulting difference images. The image subtraction, photometry extraction, and transient detection are all performed on the Rubin Science Platform. We demonstrate that SLIDE effectively extracts clean photometry by circumventing poor or missing LSST templates. We identified 29 previously unreported transients, 12 of which would not have been detected based on the DP1 DiaObject catalog. SLIDE will be especially useful for transient analysis in the early years of LSST, when template coverage will be largely incomplete or when templates may be contaminated by transients present at the time of acquisition. We present multiband light curves for a sample of known transients, along with new transient candidates identified through our search. Finally, we discuss the prospects of applying this pipeline during the main LSST survey. Our pipeline is broadly applicable and will support studies of all transients with slowly evolving phases.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Core-collapse supernovae - Supernovae - Transient detection

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 57

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Number of rows : 57
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 AT 2024ahwk ev 03 29 50.9 -28 13 05           ~ 2 0
2 PSO J052.4622-28.2178 G 03 29 50.9325292924 -28 13 04.275872417           ~ 1 0
3 AT 2024aigw ev 03 30 55.6 -27 51 59           ~ 2 0
4 ATCDFS J033055.63-275201.7 rG 03 30 55.68570960 -27 52 01.8384600           ~ 4 0
5 PSO J052.8365-27.9470 AGN 03 31 20.75 -27 56 49.0 21.11 20.87 20.88 20.691   ~ 14 0
6 AT 2024ahzc ev 03 31 21.2 -28 16 48           ~ 2 0
7 PSO J052.8383-28.2799 G 03 31 21.20873760 -28 16 47.8363440           ~ 1 0
8 PSO J052.8508-27.8950 * 03 31 24.1979209343 -27 53 42.193464939           ~ 2 1
9 PSO J052.8922-28.4129 G 03 31 34.13393520 -28 24 46.4481360           ~ 1 0
10 PSO J052.8923-27.8332 G 03 31 34.15961040 -27 49 59.7195120       20.037   ~ 3 0
11 AT 2024ahyy ev 03 31 34.2 -28 24 45           ~ 2 0
12 LSST-DP1-DO-611254522886494620 ev 03 31 35.1 -28 07 14           ~ 1 0
13 PSO J052.8964-28.1205 G 03 31 35.13868080 -28 07 14.1495600           ~ 1 0
14 PSO J052.9068-28.3337 G 03 31 37.6543750872 -28 20 01.347071424           ~ 2 0
15 2dFGRS TGS243Z042 G 03 31 37.69682640 -28 04 08.1714360   19.038   18.237   ~ 2 0
16 PSO J052.9235-28.0863 G 03 31 41.65317600 -28 05 10.7478240           ~ 1 0
17 PSO J052.9248-28.0728 G 03 31 41.95461120 -28 04 22.2400560           ~ 2 0
18 AT 2024aigv ev 03 32 13.8 -28 28 14           ~ 2 0
19 PSO J053.0576-28.4706 G 03 32 13.84008960 -28 28 14.3601960           ~ 2 0
20 2MASX J03322988-2744244 EmG 03 32 29.8815679200 -27 44 25.025427456 19.55 17.6891 16.891 16.74 16.467 ~ 60 0
21 AT 2024aigg ev 03 32 29.9 -27 44 23           ~ 2 0
22 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
23 ATCDFS J033246.02-282232.4 QSO 03 32 46.0288161432 -28 22 32.190324204   20.31   19.51   ~ 7 0
24 GOODS J033249.30-273756.7 AGN 03 32 49.2933494616 -27 37 57.070406676   20.632   20.201   ~ 4 0
25 PSO J053.2117-27.6806 G 03 32 50.83012080 -27 40 50.2156560       19.13   ~ 4 0
26 AT 2024aigj ev 03 32 51.0 -27 40 53           ~ 2 0
27 GOODS J033307.70-275331.6 G 03 33 07.69959600 -27 53 31.8063120   21.043   20.463   ~ 3 0
28 [CUD2008] 407 EmG 03 33 09.503 -27 44 06.81       20.096   ~ 12 0
29 CXOECDFS J033321.0-273911 QSO 03 33 21.0822007176 -27 39 12.027754800 20.50 20.39 20.39 20.28   ~ 19 0
30 PSO J053.3670-28.2151 G 03 33 28.0817235760 -28 12 54.430011612           ~ 1 0
31 PSO J053.3853-27.8089 G 03 33 32.48850960 -27 48 32.0518440   21.60 21.08 20.772   ~ 4 0
32 PSO J053.4220-28.2234 G 03 33 41.30234880 -28 13 24.2791320           ~ 1 0
33 AT 2024aigt ev 03 33 41.4 -28 13 25           ~ 2 0
34 PSO J053.4416-28.3353 G 03 33 46.00169040 -28 20 07.2804840           ~ 1 0
35 AT 2024ahzi ev 03 53 20.413 -48 45 01.09           ~ 2 0
36 LSST-DP1-DO-592914737654661956 ev 03 54 15.7 -48 35 30           ~ 1 0
37 DES J035415.71-483530.2 G 03 54 15.730 -48 35 30.16           ~ 1 0
38 WISE J035435.19-484338.1 G 03 54 35.19196 -48 43 38.1639           ~ 1 0
39 LSST-DP1-DO-592914050459894637 ev 03 54 35.2 -48 43 38           ~ 1 0
40 WISE J035531.88-482743.7 G 03 55 31.88473 -48 27 43.7936           ~ 2 0
41 DES J035553.48-482219.3 G 03 55 53.489 -48 22 19.30           ~ 1 0
42 WISE J035553.50-490730.0 G 03 55 53.5079091315 -49 07 29.781442367           ~ 1 0
43 WISE J035623.20-482147.9 G 03 56 23.2007895500 -48 21 48.317442655           ~ 1 0
44 WISE J035648.51-481913.6 G 03 56 48.5328705851 -48 19 13.600872454           ~ 1 0
45 DES J035653.08-490619.0 G 03 56 53.082 -49 06 19.07           ~ 1 0
46 AT 2024aigs ev 03 56 53.2 -49 06 18           ~ 2 0
47 WISE J035709.24-484702.1 G 03 57 09.24150 -48 47 02.1122           ~ 1 0
48 WISE J035716.36-485105.4 G 03 57 16.36431 -48 51 05.4220           ~ 1 0
49 2MASS J03571770-4822086 G 03 57 17.6647574679 -48 22 09.094031163           ~ 1 0
50 AT 2024aigh ev 03 57 17.8 -48 22 08           ~ 2 0
51 2MASS J03572834-4827497 G 03 57 28.3440930685 -48 27 49.581674334           ~ 1 0
52 LSST-DP1-DO-592915218690998834 ev 03 57 28.4 -48 27 49           ~ 1 0
53 WISE J035924.00-484649.2 G 03 59 24.00072 -48 46 49.2586           ~ 1 0
54 AT 2024aigl ev 03 59 24.2 -48 46 50           ~ 2 0
55 SN 2023fyq SN* 12 25 45.874 +12 39 48.87           SNIb-pec 16 0
56 SN 2020tlf SN* 14 40 10.030 +42 46 39.64           SNII(n) 55 0
57 SN 2023zkd SN* 15 48 47.546 +09 12 00.14           SNIbn 2 0

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