Fwd: BHTOM observations of

[Lukasz Wyrzykowski]

FYI

---------- Forwarded message ---------
From: Marco Antonio Gómez Muñoz <mgo...@icc.ub.edu>
Date: Thu, 30 Jul 2026 at 11:13
Subject: BHTOM observations of
To: <wyrz...@gmail.com>

Dear BHTOM team,

I would like to gain your attention to this object : ZTF23aampwuc. The object is already added as a target in the webpage but we would like to encourage a follow-up on tih sobject. This object is one of its kind as is suggested to be a binary LBV or a binary composed of a SG and a RSG.

This object in M33 displays a pure absorption spectrum, including CO bands, consistent with its identification as a cool star. Radial velocity measurements of this red component, combined with modelling of the spectral energy distribution, suggest that J013242.26+302114.1 (ZTF23aampwuc) may be a binary system consisting of an LBV or B[e] supergiant primary and a red supergiant secondary. If confirmed, it would represent the first of its kind.

The optical spectra of this object display all typical B[e]SG characteristics, but the star’s IR colors displace it clearly from the sample of confirmed B[e]SGs. It has excess emission at 8 µm due to PAHs.

It has been brightening for about 6 years and now is showing some rising in the r-band. 

We would like to kindly add it to the queue for observations.

Regards,
    Marco Gómez

--

Marco A. Gómez-Muñoz, PhD 

ERC Postdoctoral Researcher (CET-3PO)

Departament de Física Quàntica i Astrofísica

Institut de Ciències del Cosmos

Universitat de Barcelona
Office 742-D | Martí­ i Franquès, 1 08028 Barcelona

E-mail: mgo...@icc.ub.edu

Permanent: mgomez...@outlook.com

Aquest missatge, i els fitxers adjunts que hi pugui haver, pot contenir informació confidencial o protegida legalment i s’adreça exclusivament a la persona o entitat destinatària. Si no consteu com a destinatari final o no teniu l’encàrrec de rebre’l, no esteu autoritzat a llegir-lo, retenir-lo, modificar-lo, distribuir-lo, copiar-lo ni a revelar-ne el contingut. Si l’heu rebut per error, informeu-ne el remitent i elimineu  del sistema tant el missatge com els fitxers adjunts que hi pugui haver.

Este mensaje, y los ficheros adjuntos que pueda incluir, puede contener información confidencial o legalmente protegida y está exclusivamente dirigido a la persona o entidad destinataria. Si usted no consta como destinatario final ni es la persona encargada de recibirlo, no está autorizado a leerlo, retenerlo, modificarlo, distribuirlo o copiarlo, ni a revelar su contenido. Si lo ha recibido por error, informe de ello al remitente y elimine del sistema tanto el mensaje como los ficheros adjuntos que pueda contener.

This email message and any attachments it carries may contain confidential or legally protected material and are intended solely for the individual or organization to whom they are addressed. If you are not the intended recipient of this message or the person responsible for processing it, then you are not authorized to read, save, modify, send, copy or disclose any part of it. If you have received the message by mistake, please inform the sender of this and eliminate the message and any attachments it carries from your account.