2025A&A...697A...7M

Query : 2025A&A...697A...7M

2025A&A...697A...7M - Astronomy and Astrophysics, volume 697A7 (2025/5-1)

Euclid: Early Release Observations - A glance at free-floating newborn planets in the σ Orionis cluster.

MARTIN E.L., ZERJAL M., BOUY H., MARTIN-GONZALEZ D., MUNOZ TORRES S., BARRADO D., OLIVARES J., PEREZ-GARRIDO A., MAS-BUITRAGO P., CRUZ P., SOLANO E., ZAPATERO OSORIO M.R., LODIEU N., BEJAR V.J.S., ZHANG J.-Y., DEL BURGO C., HUELAMO N., LAUREIJS R., MORA A., SAIFOLLAHI T., CUILLANDRE J.-C., SCHIRMER M., TATA R., POINTS S., PHAN-BAO N., GOLDMAN B., CASEWELL S.L., REYLE C., SMART R.L., DOMINGUEZ-TAGLE C., ESCOBAR A., SEDIGHI N., TSILIA S., VITAS N., AYADI A., AGHANIM N., ALTIERI B., ANDREON S., AURICCHIO N., BALDI M., BALESTRA A., BARDELLI S., BASSET A., BENDER R., BONINO D., BRANCHINI E., BRESCIA M., BRINCHMANN J., CAMERA S., CAPOBIANCO V., CARBONE C., CARRETERO J., CASAS S., CASTELLANO M., CAVUOTI S., CIMATTI A., CONGEDO G., CONSELICE C.J., CONVERSI L., COPIN Y., CORCIONE L., COURBIN F., COURTOIS H.M., CROPPER M., DA SILVA A., DEGAUDENZI H., DI GIORGIO A.M., DINIS J., DUBATH F., DUPAC X., DUSINI S., EALET A., FARINA M., FARRENS S., FERRIOL S., FOSALBA P., FRAILIS M., FRANCESCHI E., FUMANA M., GALEOTTA S., GARILLI B., GILLARD W., GILLIS B., GIOCOLI C., GOMEZ-ALVAREZ P., GRAZIAN A., GRUPP F., GUZZO L., HAUGAN S.V.H., HOAR J., HOEKSTRA H., HOLMES W., HOOK I., HORMUTH F., HORNSTRUP A., HU D., HUDELOT P., JAHNKE K., JHABVALA M., KEIHANEN E., KERMICHE S., KIESSLING A., KILBINGER M., KITCHING T., KOHLEY R., KUBIK B., KUMMEL M., KUNZ M., KURKI-SUONIO H., LE MIGNANT D., LIGORI S., LILJE P.B., LINDHOLM V., LLORO I., MAINO D., MAIORANO E., MANSUTTI O., MARGGRAF O., MARTINET N., MARULLI F., MASSEY R., MEDINACELI E., MEI S., MELCHIOR M., MELLIER Y., MENEGHETTI M., MEYLAN G., MOHR J.J., MORESCO M., MOSCARDINI L., NIEMI S.-M., PADILLA C., PALTANI S., PASIAN F., PEDERSEN K., PERCIVAL W.J., PETTORINO V., PIRES S., POLENTA G., PONCET M., POPA L.A., POZZETTI L., RACCA G.D., RAISON F., REBOLO R., RENZI A., RHODES J., RICCIO G., RIX H.-W., ROMELLI E., RONCARELLI M., ROSSETTI E., SAGLIA R., SAPONE D., SARTORIS B., SAUVAGE M., SCARAMELLA R., SCHNEIDER P., SECROUN A., SEIDEL G., SEIFFERT M., SERRANO S., SIRIGNANO C., SIRRI G., STANCO L., TALLADA-CRESPI P., TAYLOR A.N., TEPLITZ H.I., TERENO I., TOLEDO-MOREO R., TSYGANOV A., TUTUSAUS I., VALENZIANO L., VASSALLO T., VERDOES KLEIJN G., WANG Y., WELLER J., WILLIAMS O.R., ZUCCA E., BACCIGALUPI C., WILLIS G., SIMON P., MARTIN-FLEITAS J. and SCOTT D.

Abstract (from CDS):

We provide an early assessment of the imaging capabilities of the Euclid space mission to deeply probe nearby star-forming regions and associated very young open clusters, and in particular, to determine to which extent it can shed light into the newborn free- floating planet population. This paper focusses on a low-reddening region observed in just one Euclid pointing. The dust and gas has been cleared out from the region by the hot σ Orionis star. One late-M and six known spectroscopically confirmed L-type ultracool members in the σ Orionis cluster were used as benchmarks to provide a high-purity procedure to select new candidate members with Euclid. The exquisite angular resolution and depth delivered by the Euclid instruments allowed us to focus on bona fide point sources. A cleaned sample of σ Orionis cluster substellar members was produced, and the initial mass function (IMF) was estimated by combining Euclid and Gaia data. Our σ Orionis substellar IMF is consistent with a power-law distribution without a significant steepening at the planetary-mass end. No evidence of a low-mass cutoff is found down to the detection limit of this study at 4 Jupiter masses in the very young σ Orionis open cluster.

Abstract Copyright: © The Authors 2025

Journal keyword(s): catalogs - surveys - astrometry

Nomenclature: Table A.5: [MZB2025] JDDD.dddddd+DD.dddddd N=18. Figs 4-5, Table A.6: [MZB2025] sig Ori A (Nos A-G).

Simbad objects: 43

goto Full paper

goto View the references in ADS

Number of rows : 43
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 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
2 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
3 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
4 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
6 Barnard 30 DNe 05 30.3 +12 46           ~ 56 0
7 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
8 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
9 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
10 Cl Collinder 69 OpC 05 35 32.1 +09 44 02     2.8     ~ 369 0
11 NAME sig Ori Cluster OpC 05 38 42 -02 36.0           ~ 623 0
12 [BZR99] S Ori 38 Y*O 05 39 15.2611041000 -02 21 50.711830596   22.96   20.02 17.97 M7 14 0
13 [BMZ2001] S Ori J053918.1-022855 Y*? 05 39 18.1 -02 28 55         23.89 ~ 12 0
14 [BZR99] S Ori 28 Or* 05 39 23.1926611128 -02 46 55.782192540   22.63 21.06 19.41 17.23 M5.5 24 0
15 [BMZ2001] S Ori J053923.3-021235 * 05 39 23.28 -02 12 35.0           ~ 2 0
16 [BMZ2001] S Ori J053929.4-024636 Y*? 05 39 29.37 -02 46 36.7         19.81 ~ 7 0
17 [BZR99] S Ori 60 BD* 05 39 37.51848 -02 30 41.9220         22.75 L2 20 0
18 [BZR99] S Ori 62 BD* 05 39 42.05208 -02 30 31.6080         23.03 L2:e 13 0
19 [BMZ2001] S Ori J053947.0-022525 * 05 39 47.0 -02 25 25         21.87 ~ 6 0
20 [BMZ2001] S Ori J053956.8-025315 Y*? 05 39 56.83 -02 53 14.6         21.35 M8 9 0
21 [BMZ2001] S Ori J054000.0-024033 * 05 40 00.04 -02 40 33.1           ~ 3 0
22 [BMZ2001] S Ori J054004.5-025332 * 05 40 04.48 -02 53 31.9           ~ 2 0
23 UGCS J054009.31-022632.6 BD* 05 40 09.32 -02 26 32.6         20.55 L0 10 0
24 [PBZ2012] J054011.62-025639.4 * 05 40 11.62 -02 56 39.4           ~ 2 0
25 [PBZ2012] J054014.23-025146.3 * 05 40 14.23 -02 51 46.3           ~ 2 0
26 [BMZ2001] S Ori J054017.3-023623 * 05 40 17.34 -02 36 22.6           ~ 3 0
27 [PBZ2012] J054024.32-024444.3 * 05 40 24.32 -02 44 44.3           ~ 2 0
28 [PBZ2012] J054025.39-024259.7 * 05 40 25.39 -02 42 59.7           ~ 2 0
29 [PBZ2012] J054026.44-023100.8 * 05 40 26.44 -02 31 00.8           ~ 2 0
30 [PBZ2012] J054027.99-025116.7 * 05 40 27.99 -02 51 16.7           ~ 2 0
31 [BMZ2001] S Ori J054037.8-024001 * 05 40 37.82 -02 40 01.1           ~ 3 0
32 [PBZ2012] J054038.42-022806.6 * 05 40 38.42 -02 28 06.6           ~ 3 0
33 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 555 0
34 IC 434 HII 05 41 -02.5           ~ 97 1
35 NGC 2023 RNe 05 41 37.9 -02 15 52           ~ 657 1
36 HD 37903 Em* 05 41 38.3891026008 -02 15 32.479650720 7.32 7.94 7.83 7.64 7.52 B3IV 385 0
37 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
38 LDN 1630 DNe 05 45.5 -00 59           ~ 392 0
39 M 78 RNe 05 46 45.8 +00 04 45   8.0       ~ 397 0
40 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
41 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
42 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
43 NAME Galactic Bulge reg ~ ~           ~ 4794 0

To bookmark this query, right click on this link: simbad:objects in 2025A&A...697A...7M and select 'bookmark this link' or equivalent in the popup menu