2025ApJ...994L..24F

Query : 2025ApJ...994L..24F

2025ApJ...994L..24F - Astrophys. J., 994, L24 (2025/November-3)

Identification and Photometric Classification of Extragalactic Transients in the Vera C. Rubin Observatory's Data Preview 1.

FREEBURN J., ANDREONI I., DE SOTO K.M., ANDRADE C., ANUMARLAPUDI A., BARNA T., CARNEY J., SHARMA CHAUDHARY S., COUGHLIN M.W., FONTINELE NUNES F., TEAGUE S., RIGAULT M., VILLAR V.A., ALVAREZ G.F., BIANCO F.B., BOUCAUD A., BOUTIGNY D., BRADSHAW A., CHIANG H.-F., DALY P.N., DARUICH F., DAUBARD G., DRASS H., LE GUILLOU L., GUY L.P., INGRAHAM P., JEE M.J., KAHN S.M., KANG Y., KANNAWADI A., KELVIN L.S., LAPORTE D., LIANG S., LUST N.B., LUTFI M., MAINETTI G., PLAZAS MALAGON A.A., MENANTEAU F., MILLS D.J., MONIEZ M., NOURBAKHSH E., OWEN R.E., PATTERSON M.T., PETERSON J.R., VAN REEVEN W., RIOT V.J., ROBY W., SANMARTIM D., SEBAG J., SEDAGHAT N., SHAW R.A., SHUGART A., SUBERLAK K., SWINBANK J.D., TARANU D.S., WARD C., WATERS C.Z. and WOOD-VASEY W.M.

Abstract (from CDS):

The Vera C. Rubin Observatory will soon survey the southern sky, delivering a depth and sky coverage that is unprecedented in time-domain astronomy. As part of commissioning, Data Preview 1 (DP1) has been released. It comprises a Legacy Survey of Space and Time (LSST) Commissioning Camera observing campaign between 2024 November and December with multiband imaging of seven fields, covering roughly 0.4 deg2 each, providing a first glimpse into the data products that will become available once the LSST begins. In this work, we search three fields for extragalactic transients. We identify eight new likely supernovae (SNe), and three known ones from a sample of 369,644 difference image analysis objects. Photometric classification using Superphot+ assigns subclasses with >95% confidence to only one SN Ia and one SN II in this sample. Our findings are in agreement with SN detection rate predictions of 15 ± 4 SNe from simulations using simsurvey. The SN detection rate in the data is possibly affected by the lack of suitable templates. Nevertheless, this work demonstrates the quality of the data products delivered in DP1 and indicates that the Rubin Observatory's LSST is well placed to fulfill its discovery potential in time-domain astronomy.

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

Journal keyword(s): Supernovae - Transient detection - Time domain astronomy - Surveys

Simbad objects: 20

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Number of rows : 20
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 AT 2021bjp ev 02 28 20.817 +06 36 55.34           ~ 1 0
3 AT 2024aaux ev 02 34 22.738 +07 12 52.31           ~ 1 0
4 AT 2024ackk ev 02 40 40.324 -34 17 49.33           ~ 1 0
5 AT 2024ahwk ev 03 29 50.9 -28 13 05           ~ 2 0
6 AT 2024aigw ev 03 30 55.6 -27 51 59           ~ 2 0
7 AT 2024ahzc ev 03 31 21.2 -28 16 48           ~ 2 0
8 AT 2024ahyy ev 03 31 34.2 -28 24 45           ~ 2 0
9 AT 2024aigv ev 03 32 13.8 -28 28 14           ~ 2 0
10 AT 2024aigg ev 03 32 29.9 -27 44 23           ~ 2 0
11 NAME Extended Chandra Deep Field South reg 03 32 30.0 -27 48 20           ~ 862 0
12 AT 2024aigj ev 03 32 51.0 -27 40 53           ~ 2 0
13 AT 2024aigt ev 03 33 41.4 -28 13 25           ~ 2 0
14 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
15 AT 2024ahzi ev 03 53 20.413 -48 45 01.09           ~ 2 0
16 WISE J035531.88-482743.7 G 03 55 31.88473 -48 27 43.7936           ~ 2 0
17 AT 2024aigs ev 03 56 53.2 -49 06 18           ~ 2 0
18 AT 2024aigh ev 03 57 17.8 -48 22 08           ~ 2 0
19 AT 2024aigl ev 03 59 24.2 -48 46 50           ~ 2 0
20 AT 2023yft ev 07 05 31.800 -10 45 39.31           ~ 1 0

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