RA/DEC (2000)
12:50:37.435 +41:06:24.29
192.6559775 +41.1067475
Type
Nova
Redshift
0.001027
Discovery ReportClassification Report
Related AstroNotes: 2024-198
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2024-07-18 06:08:47.904
TNS AT
Y
Public
Y
Discovery Mag
18.574
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, P. Ramsden, C. R. Angus (Queen's University Belfast), A. Aamer (QUB/Birmingham), L. Shingles (GSI/QUB), S. Srivastav, J. Gillanders, L. Rhodes, H. Stevance (Oxford), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. Sommer (LMU/QUB), B. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2024psn - 2024-07-22 22:12:20 NOT / ALFOSC (None)z=
 ▌AT_2024psn - 2024-07-20 22:19:12 CA-2.2m / CAFOS (CET-3PO)z=
 ▌AT_2024psn - 2024-07-19 21:50:24 NOT / ALFOSC (NUTS2)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
17620 2024-07-22 22:12:20 NOT / ALFOSC 2100 Alejandra Diaz Hannah Wichern, Nadejda Blagorodnova, Marco A. Gómez-Muñoz None tns_2024psn_2024-07-22_22-12-20_NOT_ALFOSC.ascii tns_2024psn_2024-07-22_22-12-20_NOT_ALFOSC.fits Object A spectrum of AT2024psn was obtained with the ALFOSC spectrograph mounted on the 2.56m Nordic Optical Telescope (program ID: P69-854, PI: H. Wichern) on 2024-07-22 22:12:20.229 UTC, four days after its discovery with ATLAS (2024-07-18 06:08:47.904). The observation was made with the gr#4 grism and 1.0” slit, and a total exposure time of 2100 s. The spectrum was subsequently reduced using the PyNOT pipeline developed by J. Krogager, and flux-calibrated using the standard star BD +33 2642.
17603 2024-07-20 22:19:12 CA-2.2m / CAFOS 2700 Martin Blazek CET-3PO tns_2024psn_2024-07-20.93_CA-2.2m_CAFOS_CET-3PO.txt Object The transient AT 2024psn was discovered by ATLAS in the galaxy M 94 (5 Mpc) with an o-band magnitude of m_o = 18.57 +/- 0.16, on MJD = 60509.26 (2024-07-18.26), implying an absolute magnitude of M_o = -9.9 +/- 0.2, compatible with the range of luminous red novae transients. Consequently, we obtained a spectrum of AT 2024psn on 2024-07-20.93 UT using the low-resolution instrument CAFOS, mounted on the Calar Alto 2.2m telescope. The G-200 grism was used along with a 1.5 arcsec slit, providing a wavelength coverage of 3800-9200 Å, and a resolution of 400 – 500 km/s. Two consecutive spectra were taken with 1350s exposures. The data was reduced using a custom-developed Python pipeline. The flux was calibrated using the standard star Feige 66.
17593 2024-07-19 21:50:24 NOT / ALFOSC 2400 Koivisto Pastorello, Nagao NUTS2 tns_2024psn_2024-07-19.91_NOT_ALFOSC_NUTS.dat tns_2024psn_2024-07-19.91_NOT_ALFOSC_NUTS.fits Object The spectrum of AT 2024psn was obtained by NOT Unbiased Transient Survey 2 (NUTS2, https://nuts.sn.ie/) collaboration on 2024-07-19.91 UT, using the 2.56m Nordic Optical Telescope equipped with ALFOSC (range 3400-9600 A, resolution 14 A).
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2024-07-14 21:51:05 - 2024-07-18 21:44:18 2460506.410468 - 2460510.405757 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
419936 2024-07-18 21:44:18 2460510.405757 18.43 0.13 ABMag L-GOTO GOTO-N_GOTO-2 180
419935 2024-07-14 21:51:05 2460506.410468 18.8 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2024-07-18 06:08:48 - 2024-07-18 06:08:48 2460509.75611 - 2460509.75611 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
419864 2024-07-18 06:08:48 2460509.75611 18.574 0.16 18.85 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2024-07-16 07:59:08 - 2024-07-16 07:59:08 2460507.83273 - 2460507.83273 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
419863 2024-07-16 07:59:08 2460507.83273 18.7 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
219080 2024-07-19 10:30:16 GOTO_bot T. Killestein,K. Ackley,M. Dyer et al. GOTO GOTO 12:50:37.513 +41:06:25.12 2024-07-18 21:44:17.664 18.43 L-GOTO Other GOTO24dpz GOTO N
219049 2024-07-19 00:08:55 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 12:50:37.435 +41:06:24.29 2024-07-18 06:08:47.904 18.574 orange-ATLAS PSN ATLAS24lnc ATLAS 2024TNSTR2499....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
17533 2024-07-26 16:08:28 Hannah Wichern Hannah Wichern (DTU), Nadejda Blagorodnova, Marco A. Gómez-Muñoz, Gerard Garcia Moreno, Hugo Tranin, Maxime Wavasseur, Grace Katusiime (ICCUB), David Jones (IAC), Giorgos Leloudas (DTU), Viraj R. Karambelkar (Caltech) None Nova 1 The spectrum shows a P-Cygni profile for the H-alpha line, which has a FWHM of ~1800 km/s, and a blue shifted absorption component with a velocity of -1070 km/s as measured at the minimum of the absorption trough. The H-beta line also presents a P-Cygni profile, and on top of it, we detect a narrow and weak absorption at the galaxy's rest frame velocity. We also detect other common nova lines, such as O I, Mg II and Ca II lines. Narrow emission from Fe II multiplets is also detected. We therefore conclude that AT2024psn is an Fe-type nova. 2024TNSCR2606....1W
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
17620 2024-07-22 22:12:20 NOT / ALFOSC 2100 Alejandra Diaz Hannah Wichern, Nadejda Blagorodnova, Marco A. Gómez-Muñoz None tns_2024psn_2024-07-22_22-12-20_NOT_ALFOSC.ascii tns_2024psn_2024-07-22_22-12-20_NOT_ALFOSC.fits Object A spectrum of AT2024psn was obtained with the ALFOSC spectrograph mounted on the 2.56m Nordic Optical Telescope (program ID: P69-854, PI: H. Wichern) on 2024-07-22 22:12:20.229 UTC, four days after its discovery with ATLAS (2024-07-18 06:08:47.904). The observation was made with the gr#4 grism and 1.0” slit, and a total exposure time of 2100 s. The spectrum was subsequently reduced using the PyNOT pipeline developed by J. Krogager, and flux-calibrated using the standard star BD +33 2642.
17516 2024-07-23 14:51:50 Gerard Garcia Gerard Garcia, Nadejda Blagorodnova, Maxime Wavasseur, Hugo Tranin, Grace Katusiime, Marco A. Gómez-Muñoz (ICCUB), David Jones (IAC), Viraj Karambelkar (Caltech), Hannah Wichern (DTU) CET-3PO Nova 1 CET-3PO Although the signal to noise of our spectrum is low, both spectra show a weak H alpha line at a velocity of ~1200 km/s (corrected for instrumental resolution). This is in agreement with the ~1100 km/s expansion velocities derived by the NOT Unbiased Transient Survey 2 (NUTS2, https://nuts.sn.ie/) collaboration from their spectrum taken on 2024-07-19.91 UT (see https://www.wis-tns.org/object/2024psn/classification-cert). 2024TNSCR2554....1G
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
17603 2024-07-20 22:19:12 CA-2.2m / CAFOS 2700 Martin Blazek CET-3PO tns_2024psn_2024-07-20.93_CA-2.2m_CAFOS_CET-3PO.txt Object The transient AT 2024psn was discovered by ATLAS in the galaxy M 94 (5 Mpc) with an o-band magnitude of m_o = 18.57 +/- 0.16, on MJD = 60509.26 (2024-07-18.26), implying an absolute magnitude of M_o = -9.9 +/- 0.2, compatible with the range of luminous red novae transients. Consequently, we obtained a spectrum of AT 2024psn on 2024-07-20.93 UT using the low-resolution instrument CAFOS, mounted on the Calar Alto 2.2m telescope. The G-200 grism was used along with a 1.5 arcsec slit, providing a wavelength coverage of 3800-9200 Å, and a resolution of 400 – 500 km/s. Two consecutive spectra were taken with 1350s exposures. The data was reduced using a custom-developed Python pipeline. The flux was calibrated using the standard star Feige 66.
17506 2024-07-22 10:07:50 Andrea Pastorello A. Pastorello (INAF-OAPd), T. Nagao (University of Turku), G. Valerin (INAF-OAPd), L. Tomasella (INAF-OAPd), A. Reguitti (INAF-OAB), I. Salmaso (INAF-OAPd), F. Guidolin (University of Padova), E. Kankare (University of Turku), M. D. Stritzinger (University of Aarhus), T. Reynolds (DAWN, NBI, UTU) NUTS2 Nova 0.001027 1 NUTS2 The spectrum shows a blue continuum superposed by weak and narrow P Cygni lines, at a redshift consistent with that of Messier 094. From the minimum of the absorption profile of the Balmer lines, we infer an expansion velocity of about 1100 km/s for the ejected material. Other absorption features identified in the spectrum are Fe II and O I 7774 A. The spectrum is consistent with that of a very young Fe nova in Messier 094. 2024TNSCR2536....1P
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
17593 2024-07-19 21:50:24 NOT / ALFOSC 2400 Koivisto Pastorello, Nagao NUTS2 tns_2024psn_2024-07-19.91_NOT_ALFOSC_NUTS.dat tns_2024psn_2024-07-19.91_NOT_ALFOSC_NUTS.fits Object The spectrum of AT 2024psn was obtained by NOT Unbiased Transient Survey 2 (NUTS2, https://nuts.sn.ie/) collaboration on 2024-07-19.91 UT, using the 2.56m Nordic Optical Telescope equipped with ALFOSC (range 3400-9600 A, resolution 14 A).

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