A novel survey for young substellar objects with the W-band filter III: Searching for very low-mass brown dwarfs in Serpens South and Serpens Core

Dubber, Sophie; Biller, Beth; Allers, Katelyn; Jose, Jessy; Albert, Loïc; Pantoja, Blake; Fontanive, Clémence; Liu, Michael; Zhang, Zhoujian; Chen, Wen-Ping; Lalchand, Bhavana; Damian, Belinda; Sharma, Tanvi (2021). A novel survey for young substellar objects with the W-band filter III: Searching for very low-mass brown dwarfs in Serpens South and Serpens Core. Monthly notices of the Royal Astronomical Society, 505(3), pp. 4215-4234. Oxford University Press 10.1093/mnras/stab1397

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We present CFHT photometry and IRTF spectroscopy of low-mass candidate members of Serpens South and Serpens Core (∼430 pc, ∼0.5 Myr), identified using a novel combination of photometric filters, known as the W-band method. We report SC182952+011618, SS182959-020335 and SS183032-021028 as young, low-mass Serpens candidate members, with spectral types in the range M7-M8, M5-L0 and M5-M6.5 respectively. Best-fit effective temperatures and luminosities imply masses of < 0.12M⊙ for all three candidate cluster members. We also present Hubble Space Telescope imaging data (F127M, F139M and F850LP) for six targets in Serpens South. We report the discovery of the binary system SS183044-020918AB. The binary components are separated by ≈45 AU, with spectral types of M7-M8 and M8-M9, and masses of 0.08-0.1 and 0.05-0.07M⊙. We discuss the effects of high dust attenuation on the reliability of our analysis, as well as the presence of reddened background stars in our photometric sample.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute
10 Strategic Research Centers > Center for Space and Habitability (CSH)
08 Faculty of Science > Physics Institute > NCCR PlanetS

UniBE Contributor:

Fontanive, Clémence Cécile Pia

Subjects:

500 Science > 520 Astronomy
500 Science > 530 Physics

ISSN:

0035-8711

Publisher:

Oxford University Press

Language:

English

Submitter:

Danielle Zemp

Date Deposited:

09 May 2022 12:20

Last Modified:

09 May 2022 12:29

Publisher DOI:

10.1093/mnras/stab1397

BORIS DOI:

10.48350/169724

URI:

https://boris.unibe.ch/id/eprint/169724

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