IGPCRIS :: Browsing by Author "ALVARADO, D."

Browsing by Author "ALVARADO, D."

Now showing 1 - 9 of 9

Follow-up OAUNI photometry of SN 2024iss
(R. E. Rutledge, 2024-07-16)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
ZEVALLOS, M.
;
ALVARADO, D.
;
DELGADO, J.
;
TORRE, E.
;
TELLO, J.
;
DE ALMEIDA, L.
We report new photometry of Type II SN 2024iss gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging in R filter was performed on four consecutive nights under non-photometric conditions with the target on higher airmasses. The integration time was 80x20s=1600s in each observation. Our measurements yielded: Date (UT) | filter | seeing (") | mag, 2024-07-03.124 | R | 14.70 +/- 0.02, 2024-07-04.129 | R | 14.72 +/- 0.02, 2024-07-05.112 | R | 14.76 +/- 0.01, 2024-07-06.097 | R | 14.77 +/- 0.01. UCAC4 field stars were used for the zero point calibration. Our observations are ~7.3 weeks after the GOTO detection. The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).
OAUNI non-detection of AT 2023pow in R band
(R. E. Rutledge, 2023-08-23)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
TELLO, J.
;
ALVARADO, D.
;
TORRE, E.
;
ZEVALLOS, M.
;
ESPINOZA, M.
;
DE ALMEIDA, L.
CCD imaging was performed of the NGC 1640 field using the OAUNI 51cm telescope at Huancayo Observatory, Peru, on 2023-08-19.310 (UT). No source is detected at the position of AT 2023pow (TNSTR-2023-1982) with limiting magnitude R ~ 18.5. This is consistent with the AT 2023pow report by T. Noguchi few hours after the detection alert. The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio133-2020 Fondecyt).
OAUNI photometry of SN 2023fyq
(R. E. Rutledge, 2023-09-02)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
TELLO, J.
;
ALVARADO, D.
;
TORRE, E.
;
ZEVALLOS, M.
;
ESPINOZA, M.
;
DE ALMEIDA, L.
Photometry of Type Ib-pec SN 2023fyq was gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging in R filter was performed on three consecutive nights under non-photometric conditions with the target at low altitude. Special care was taken to select the appropriate photometric aperture to minimize the contamination with the host galaxy. Our measurements are indicated below: Date (UT) | filter | IT | seeing (") | mag |, 2023-08-17.008 | R | 88x20s | 1.9 | 14.725 +/- 0.012, 2023-08-18.008 | R | 90x20s | 2.0 | 14.719 +/- 0.012, 2023-08-19.005 | R | 70x20s | 2.0 | 14.715 +/- 0.011. UCAC4 field stars were used for the zero point calibration. Our observations are ~3.8 weeks after K. Itagaki report showing the rapid brightening of the target. The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).
OAUNI photometry of SN 2023gfo
(R. E. Rutledge, 2023-06-10)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
ESPINOZA, M.
;
TELLO, J.
;
ZEVALLOS, M.
;
ALVARADO, D.
;
DE ALMEIDA, L.
Multiband photometry of Type II SN 2023gfo on 2023-05-24 (UT) was gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging using VRI filters was performed under non-photometric conditions (seeing ~1.8") and airmass lower than 1.6. Total integration times of (45x20s=900s) for V, R and I filters yielded: V = 15.60 +/- 0.01 on 2023-05-24.228 (UT); R = 15.33 +/- 0.03 on 2023-05-24.197; I = 15.12 +/- 0.05 on 2023-05-24-212.
OAUNI photometry of SN 2023ijd
(R. E. Rutledge, 2023-07-31)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
ESPINOZA, M.
;
TELLO, J.
;
ZEVALLOS, M.
;
DE ALMEIDA, L.
;
ALVARADO, D.
Photometry of Type II SN 2023ijd (TNSTR-2023-1092, TNSCR-2023-1112) was gathered with the OAUNI 51cm telescope (arXiv:1512.03104) at Huancayo Observatory, Peru. CCD imaging in R filter was performed on three consecutive nights under non-photometric conditions with airmasses lower than 1.8. The integration time was 70x20s=1400s in each observation. Our measurements yielded: Date (UT) / filter / seeing (") / mag ; 2023-07-15.072 / R / 2.1 / 15.52 +/- 0.01 ; 2023-07-16.057 / R / 1.8 / 15.61 +/- 0.01 ; 2023-07-17.053 / R / 2.2 / 15.56 +/- 0.01. UCAC4 field stars were used for the zero point calibration. Our observations are ~two months after the ASAS-SN detection (TNSTR-2023-1092). The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).
OAUNI photometry of SN 2023mkt
(R. E. Rutledge, 2023-09-07)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
TELLO, J.
;
ALVARADO, D.
;
TORRE, E.
;
ZEVALLOS, M.
;
DE ALMEIDA, L.
We report photometry of Type Ia SN 2023mkt gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging in R filter was performed on two consecutive nights under non-photometric conditions with an airmass lower than 1.7. The integration time was 90x20s=1800s in both nights. Our measurements are indicated below: Date (UT) | filter |seeing (") | mag, 2023-08-18.082 | R | 2.1 | 16.02 +/- 0.01, 2023-08-19.079 | R | 2.4 |16.05 +/- 0.01. UCAC4 field stars were used for the zero point calibration. Our observations are ~6 weeks after SN 2023mkt discovery date. The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).
OAUNI photometry of SN 2024ggi
(R. E. Rutledge, 2024-11-25)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
ZEVALLOS, M.
;
ALVARADO, D.
;
DELGADO, J.
;
TELLO, J.
;
DE ALMEIDA, L.
;
TORRE, E.
We report photometry of Type II SN 2024ggi gathered with the OAUNI 51cm telescope (arXiv:1512.03104) at Huancayo Observatory, Peru. CCD imaging in R filter was performed on five consecutive nights under nonˇphotometric conditions with airmasses lower than 1.6. The integration time was 50x20s=1000s in the first observation and 60x20s=1200s for the rest. Our measurements yielded: Date (UT) | filter | seeing (") | mag, 2024-06-05.108 | R | 3.2 | 12.27 +/- 0.06, 2024-06-06.080 | R | 2.6 | 12.25 +/- 0.06, 2024-06-07.064 | R | 2.8 | 12.27 +/- 0.06, 2024-06-08.061 | R | 2.7 | 12.27 +/- 0.06, 2024-06-09.062 | R | 2.9 | 12.28 +/- 0.06. UCAC4 field stars were used for the zero point calibration. Our observations are ~7.9 weeks after ATLAS discovery (TNSAN-2024-100). The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).
OAUNI photometry of SN 2024iss
(R. E. Rutledge, 2024-06-18)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
ZEVALLOS, M.
;
ALVARADO, D.
;
DELGADO, J.
;
TELLO, J.
;
DE ALMEIDA, L.
;
TORRE, E.
We report photometry of Type II SN 2024iss gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging in R filter was performed on three consecutive nights under non-photometric conditions with airmasses lower than 1.5. The integration time was 70x20s=1400s in each observation. Our measurements yielded: Date (UT) | filter | seeing (") |mag, 2024-06-07.102 | R | 2.6 |13.40 +/- 0.02, 2024-06-08.093 | R | 2.6 | 13.49 +/- 0.02, 2024-06-09.094 | R | 2.8 | 13.59 +/- 0.02. UCAC4 field stars were used for the zero point calibration. Our observations are ~3.7 weeks after the GOTO detection. The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).
OAUNI photometry of SN 2024jlf
(R. E. Rutledge, 2024-11-25)
PEREYRA QUIRÓZ, ANTONIO ARMSTRONG
;
ZEVALLOS, M.
;
ALVARADO, D.
;
DELGADO, J.
;
TELLO, J.
;
DE ALMEIDA, L.
;
TORRE, E.
We report photometry of Type II SN 2024jlf gathered with the OAUNI 51cm telescope (arXiv:1512.03104) at Huancayo Observatory, Peru. CCD imaging in R filter was performed on five consecutive nights under non-photometric conditions with airmasses lower than 1.3. The integration time was 40x20s=800s for all observations. Our measurements yielded: Date (UT) | filter | seeing (") | mag, 2024-06-05.056 | R | 2.5 | 14.71 +/- 0.01, 2024-06-06.024 | R | 2.7 | 14.57 +/- 0.03, 2024-06-07.013 | R | 2.9 | 14.45 +/- 0.03, 2024-06-08.010 | R | 2.7 | 14.54 +/- 0.02, 2024-06-09.005 | R | 2.5 | 14.66 +/- 0.02. UCAC4 field stars were used for the zero point calibration. Our first observation is ~8 days after ZTF discovery. The OAUNI project is supported by UNI, TWAS, IGP and ProCiencia-Concytec (Convenio 133-2020 Fondecyt).

Browsing by Author "ALVARADO, D."

Results Per Page

Sort Options